Appendix B -- Annual Limits on Intake (ALI) and Derived Air Concentrations (DAC) of

Radionuclides for Occupational Exposure; Effluent Concentrations; Concentrations for Release to Sanitary Sewerage Introduction. For each radionuclide, Table I indicates the chemical form which is to be used for selecting the appropriate ALI or DAC value. The ALIs and DACs for inhalation are given for an aerosol with an activity median aerodynamic diameter (AMAD) of 1 :m, micron, and for three classes (D,W,Y) of radioactive material, which refer to their retention (approximately days, weeks or years) in the pulmonary region of the lung. This classification applies to a range of clearance half-times for D if less than 10 days, for W from 10 to 100 days, and for Y greater than 100 days. The class (D, W, or Y) given in the column headed "Class" applies only to the inhalation ALIs and DACs given in Table I, column 2 and 3. Table II provides concentration limits for airborne and liquid effluents released to the general environment. Table III provides concentration limits for discharges to sanitary sewerage. Note: The values in Tables I, II, and III are presented in the computer "E" notation. In this notation a value of 6E-02 represents a value of 6 x 10 or 0.06, 6E+2 represents 6 x 1O or 600, -2 and 6E+0 represents 6 x 10 or 6. Table I "Occupational Values" Note that the columns in 105 CMR 120.296: Appendix B, Table I captioned "Oral Ingestion ALI," "Inhalation ALI," and "DAC," are applicable to occupational exposure to radioactive material. The ALIs in 105 CMR 120.296: Appendix B are the annual intakes of given radionuclide by "Reference Man" which would result in either (1) a committed effective dose equivalent of 5 rems (0.05 sievert), stochastic ALI, or (2) a committed dose equivalent of 50 rems (0.5 sievert) to an organ or tissue, non-stochastic ALI. The stochastic ALIs were derived to result in a risk, due to irradiation of organs and tissues, comparable to the risk associated with deep dose equivalent to the whole body of five rems (0.05 sievert). The derivation includes multiplying T the committed dose equivalent to an organ or tissue by a weighting factor, w . This weighting factor is the proportion of the risk of stochastic effects resulting from irradiation of the organ or tissue, T, to the total risk of stochastic effects when the whole body is irradiated uniformly. The T values of w are listed under the definition of "weighting factor" in 105 CMR 120.203. The non-stochastic ALIs were derived to avoid non-stochastic effects, such as prompt damage to tissue or reduction in organ function. T A value of w = 0.06 is applicable to each of the five organs or tissues in the "remainder" category receiving the highest dose equivalents, and the dose equivalents of all other remaining tissues may be disregarded. The following portions of the GI tract -- stomach, small intestine, upper large intestine, and lower large intestine -- are to be treated as four separate organs. Note that the dose equivalents for an extremity, skin and lens of the eye are not considered in computing the committed effective dose equivalent, but are subject to limits that must be met separately. When an ALI is defined by the stochastic dose limit, this value alone is given. When an ALI is determined by the non-stochastic dose limit to an organ, the organ or tissue to which the limit applies is shown, and the ALI for the stochastic limit is shown in parentheses. Abbreviated organ or tissue designations are used: LLI wall = lower large intestine wall; St wall = stomach wall; Blad wall = bladder wall; and, Bone surf = bone surface. The use of the ALIs listed first, the more limiting of the stochastic and non-stochastic ALIs, will ensure that non-stochastic effects are avoided and that the risk of stochastic effects is limited to an acceptably low value. If, in a particular situation involving a radionuclide for which the non-stochastic ALI is limiting, use of that non-stochastic ALI is considered unduly conservative, the licensee may use the stochastic ALI to determine the committed effective dose equivalent. However, the licensee shall also ensure that the 50 rems (0.5 sievert) dose equivalent limit for any organ or tissue is not exceeded by the sum of the external deep dose equivalent plus the internal committed dose equivalent to that organ, not the effective dose. For the case where there is no external dose contribution, this would be demonstrated if the sum of the fractions of the ns nonstochastic ALIs (ALI ) that contribute to the committed dose equivalent to the organ receiving the highest dose does not exceed unity, that is, 3 (intake (in :Ci) of each ns d radionuclide/ALI ) # 1.0. If there is an external deep dose equivalent contribution of H , then d this sum must be less than 1 - (H /50), instead of # 1.0. Note that the dose equivalents for an extremity, skin, and lens of the eye are not considered in computing the committed effective dose equivalent, but are subject to limits that must be met separately. The derived air concentration (DAC) values are derived limits intended to control chronic occupational exposures. The relationship between the DAC and the ALI is given by: DAC = ALI(in :Ci)/(2000 hours per working year x 60 minutes/hour x 2 x 10 ml per minute) = [ALI/2.4 x 10 ] :Ci/ml, where 2 x 10 ml is the volume of air breathed per minute at work by Reference Man under working conditions of light work. The DAC values relate to one of two modes of exposure: either external submersion or the internal committed dose equivalents resulting from inhalation of radioactive materials. DACs based upon submersion are for immersion in a semi-infinite cloud of uniform concentration and apply to each radionuclide separately. The ALI and DAC values include contributions to exposure by the single radionuclide named and any in-growth of daughter radionuclides produced in the body by decay of the parent. However, intakes that include both the parent and daughter radionuclides should be treated by the general method appropriate for mixtures. The values of ALI and DAC do not apply directly when the individual both ingests and inhales a radionuclide, when the individual is exposed to a mixture of radionuclides by either inhalation or ingestion or both, or when the individual is exposed to both internal and external irradiation. See 105 CMR 120.212. When an individual is exposed to radioactive materials which fall under several of the translocation classifications of the same radionuclide, such as, Class D, Class W, or Class Y, the exposure may be evaluated as if it were a mixture of different radionuclides. It should be noted that the classification of a compound as Class D, W, or Y is based on the chemical form of the compound and does not take into account the radiological half-life of different radionuclides. For this reason, values are given for Class D, W, and Y compounds, even for very short-lived radionuclides. Table II "Effluent Concentrations". The columns in 105 CMR 120.296: Appendix B, Table II captioned "Effluents," "Air" and "Water" are applicable to the assessment and control of dose to the public, particularly in the implementation of the provisions of 105 CMR 120.222. The concentration values given in 105 CMR 120.296: Appendix B, Table II, Columns 1 and 2 are equivalent to the radionuclide concentrations which, if inhaled or ingested continuously over the course of a year, would produce a total effective dose equivalent of 0.05 rem (0.5 millisievert). Consideration of non-stochastic limits has not been included in deriving the air and water effluent concentration limits because non-stochastic effects are presumed not to occur at or below the dose levels established for individual members of the public. For radionuclides, where the non-stochastic limit was governing in deriving the occupational DAC, the stochastic ALI was used in deriving the corresponding airborne effluent limit in Table II. For this reason, the DAC and airborne effluent limits are not always proportional as was the case in the previous Appendix 105 CMR 120.295: Appendix A. The air concentration values listed in Table II, Column 1 were derived by one of two methods. For those radionuclides for which the stochastic limit is governing, the occupational stochastic inhalation ALI was divided by 2.4 x 10 ml, relating the inhalation ALI to the DAC, as explained above, and then divided by a factor of 300. The factor of 300 includes the following components: a factor of 50 to relate the 5 rems (0.05 sievert) annual occupational dose limit to the one mSv (0.1 rem) limit for members of the public, a factor of three to adjust for the difference in exposure time and the inhalation rate for a worker and that for members of the public; and a factor of two to adjust the occupational values, derived for adults, so that they are applicable to other age groups. For those radionuclides for which submersion, that is external dose, is limiting, the occupational DAC in 105 CMR 120.296: Appendix B, Table I, Column 3 was divided by 219. The factor of 219 is composed of a factor of 50, as described above, and a factor of 4.38 relating occupational exposure for 2,000 hours per year to full-time exposure (8,760 hours per year). Note that an additional factor of 2 for age considerations is not warranted in the submersion case. The water concentrations were derived by taking the most restrictive occupational stochastic oral ingestion ALI and dividing by 7.3 x 10 . The factor of 7.3 x 10 (ml) includes the following components: the factors of 50 and 2 described above and a factor of 7.3 x 10 (ml) which is the annual water intake of "Reference Man". Note 2 of 105 CMR 120.296: Appendix B provides groupings of radionuclides which are applicable to unknown mixtures of radionuclides. These groupings, including occupational inhalation ALIs and DACs, air and water effluent concentrations and releases to sewer, require demonstrating that the most limiting radionuclides in successive classes are absent. The limit for the unknown mixture is defined when the presence of one of the listed radionuclides cannot be definitely excluded as being present either from knowledge of the radionuclide composition of the source or from actual measurements. Table III "Releases to Sewers". The monthly average concentrations for release to sanitary sewerage are applicable to the provisions in 105 CMR 120.253. The concentration values were derived by taking the most restrictive occupational stochastic oral ingestion ALI and dividing by 7.3 x 10 (ml). The factor of 7.3 x 10 (ml) is composed of a factor of 7.3 x 10 (ml), the annual water intake by "Reference Man", and a factor of ten, such that the concentrations, if the sewage released by the licensee were the only source of water ingested by a "Reference Man" during a year, would result in a committed effective dose equivalent of five mSv (0.5 rem). List of Elements Name Atomic Name Atomic Symbol No. Symbol No. Actinium Ac Aluminium Al Americium Am Antimony Sb Argon Ar Arsenic As Astatine At Barium Ba Berkelium Bk Beryllium Be Bismuth Bi Bromine Br Cadmium Cd Calcium Ca Californium Cf Carbon C Cerium Ce Cesium Cs Chlorine Cl Chromium Cr Cobalt Co Copper Cu Curium Cm Dysprosium Dy Einsteinium Es Erbium Er Europium Eu Femium Fm Fluorine F Francium Fr Gadolinium Gd Gallium Ga Germanium Ge Gold Au Hafnium Hf Holmium Ho Hydrogen H Indium In Iodine I Iridium Ir Iron Fe Krypton Kr Lanthanum La Lead Pb Lutetium Lu Magnesium Mg Manganese Mn Mendelevium Md Mercury Hg Molybdenum Mo Neodymium Nd Neptunium Np Nickel Ni Niobium Nb Nitrogen N Osmium Os Oxygen O Palladium Pd Phosphorus P Platinum Pt Plutonium Pu Polonium Po Potassium K Praseodymium Pr Promethium Pm Protactinium Pa Radium Ra Radon Rn Rhenium Re Rhodium Rh Rubidium Rb Ruthenium Ru Samarium Sm Scandium Sc Selenium Se Silicon Si Silver Ag Sodium Na Strontium Sr Sulfur S Tantalum Ta Technetium Tc Tellurium Te Terbium Tb Thallium Tl Thorium Th Thulium Tm Tin Sn Titanium Ti Tungsten W Uranium U Vanadium V Xenon Xe Ytterbium Yb Yttrium Y Zinc Zn Zirconium Zr Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Hydrogen-3 Water, DAC includes skin absorption Gas (HT or T ) Submersion : Use above values as HT and T oxidize in air and in the body to HTO. Beryllium-7 W, all compounds except those given for Y Y, oxides, halides, and nitrates = = = Beryllium-10 W, see Be = = LLI wall (1E+3) = = = Y, see Be = = = Carbon-11 Monoxide = = = Dioxide = = = Compounds Carbon-14 Monoxide = = = Dioxide = Compounds Nitrogen-13 Submersion = = Oxygen-15 Submersion = = Fluorine-18 D, fluorides of H, Li, Na, K, Rb, Cs, and Fr = = St wall (5E+4) = = = W, fluorides of Be, Mg, Ca, Sr, Ba, Ra, Al, Ga, In, Tl, As, Sb, Bi, Fe, Ru, Os, Co, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Sc, Y, Ti, Zr, V, Nb, Ta, Mn, Tc, and Re = = = Y, lanthanum fluoride = = = Sodium-22 D, all compounds Sodium-24 D, all compounds Magnesium-28 D, all compounds except those given for W W, oxides, hydroxides, carbides, halides, and nitrates = = = Aluminum-26 D, all compounds except those given for W W, oxides, hydroxides, carbides, halides, and nitrates = = = Silicon-31 D, all compounds except those given for W and Y Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, oxides, hydroxides, carbides, and nitrates - - - Y, aluminosilicate glass - 1 E-5 4 E-8 - - Silicon-32 D, see Si 1 E-7 - - LLI wall (3E+3) - - - 4 E-5 4 E-4 W, see Si - 5 E-8 - - Y, see Si - - - Phosphorus-32 D, all compounds except phosphates given for W 4 E-7 9 E-6 9 E-5 W, phosphates of Zn , S , Mg , Fe , 2+ 3+ 2+ 3+ Bi , and lanthanides 3+ - 2 E-7 - - Phosphorus-33 D, see P 1 E-8 1 E-8 8 E-5 8 E-4 W, see P - 1 E-68 4 E-9 - - Sulfur-35 Vapor 6 E-6 2 E-8 - - D, sulfides and sulfates except those given for W 7 E-6 2 E-8 - - LLI wall (8E+3) - - - 1 E-4 1 E-3 W, elemental sulfur, sulfides of Sr, Ba, Ge, Sn, Pb, As, Sb, Bi, Cu, Ag, Au, Zn, Cd, Hg, W, and Mo. Sulfates of Ca, Sr, Ba, Ra, As, Sb, and Bi - 9 E-7 3 E-9 - - Chlorine-36 D, chlorides of H, Li, Na, K, Rb, Cs, and Fr 1 E-6 3 E-9 2 E-+ 2 E-4 W, chlorides of lantha- nides, Be, Mg, Ca, Sr, Ba, Ra, Al, Ga, In, Tl, Ge, Sn, Pb, As, Sb, Bi, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc, and Re - 1 E-7 3 E-10 - -- Chlorine-38 D, see Cl 2 E-5 6 E-8 - St wall (3E+4) - - - W, see Cl - 2 E-5 6 E-8 - - Chlorine-39 D, see Cl 2 E-5 7 E-8 - - St wall (4E+4) - - - 5 E-4 5 E-3 Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Cl - - - Argon-37 Submersion - - - - Argon-39 Submersion - - - - Argon-41 Submersion - - - - Potassium-40 D, all compounds Potassium-42 D, all compounds Potassium-43 D, all compounds Potassium-44 D, all compounds 9E+-8 - - St wall (4E+4) - - - Potassium-45 D, all compounds - - St wall (5E+4) - - - Calcium-41 W, all compounds - - - Bone surf (4E+3) Bone surf (4E+3) - 6-4E Calcium-45 W, all compounds E+3 Calcium-47 W, all compounds Scandium-43 Y, all compounds Scandium-44m Y, all compounds Scandium-44 Y, all compounds Scandium-46 Y, all compounds Scandium-47 Y, all compounds 2E+3 3E+3 - - LLI wall (3E+3) - - - Scandium-48 Y, all compounds E-5 Scandium-49 Y, all compounds Titanium-44 D, all compounds except those given for W and Y W, oxides, hydroxides, carbides, halides, and nitrates - - - Y, SrTi0 - - - Titanium-45 D, see Ti W, see Ti - - - Y, see Ti - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Vanadium-47 D, all compounds except those given for W - - St wall (3E+4) - - - W, oxides, hydroxides, carbides, and halides - - - Vanadium-48 D, see V W, see V - - - Vanadium-49 D, see V - - - LLI wall (9E+4) Bone surf (3E+4) - W, see V - - - Chromium-48 D, all compounds except those given for W and Y W, halides and nitrates - - - Y, oxides and hydroxides - - - Chromium-49 D, see Cr W, see Cr - - - Y, see Cr - - - Chromium-51 D, see Cr W, see Cr - - - Y, see Cr - - - Manganese-51 D, all compounds except those given for W W, oxides, hydroxides, halides, and nitrates - - - Manganese-52m D, see Mn - - St wall (4E+4) - - - W, see Mn - - - Manganese-52 D, see Mn W, see Mn - - - Manganese-53 D, see Mn - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) - Bone surf (2E+4) - - - W, see Mn - - - Manganese-54 D, see Mn W, see Mn - - - Manganese-56 D, see Mn W, see Mn - - - Iron-52 D, all compounds except those given for W W, oxides, hydroxides, and halides - - - Iron-55 D, see Fe W, see Fe - - - Iron-59 D, see Fe W, see Fe - 7E-10- - Iron-60 D, see Fe W, see Fe - - - Cobalt-55 W, all compounds except those given for Y Y, oxides, hydroxides, halides, and nitrates - - - Cobalt-56 W, see Co Y, see Co - - Cobalt-57 W, see Co Y, see Co - - Cobalt-58m W, see Co Y, see Co - - - Cobalt-58 W, see Co Y, see Co - - Cobalt-60m W, see Co - - St wall (1E+6) - - - Y, see Co - - - Cobalt-60 W, see Co Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Co 2 E+2 3 E+1 1 E-8 5 E-11 - - Cobalt-61 W, see Co 2 E+4 6 E+4 3 E-5 9 E-8 3 E-4 3 E-3 Y, see Co 2 E+4 6 E+4 2 E-5 8 E-8 - - Cobalt-62m W, see Co 4 E+4 2 E+5 7 E-5 2 E-7 - - St wall (5E+4) - - - 7 E-1 7 E-3 Y, see Co - 2 E+5 6 E-5 2 E-7 - - Nickel-56 D, all compounds except those given for W 1 E+3 2 E+3 8 E-7 3 E-9 2 E-5 2 E-4 W, oxides, hydroxides, and carbides - 1 E+3 5 E-7 2 E-9 - - Vapor - 1 E+3 5 E-7 2 E-9 - - Nickel-57 D, see Ni 2 E+3 5 E+3 2 E-6 7 E-9 2 E-5 2 E-4 W, see Ni - 3 E+3 1 E-6 4 E-9 - - Vapor - 6 E+3 3 E-6 9 E-9 - - Nickel-59 D, see Ni 2 E+4 4 E+3 2 E-6 5 E-9 3 E-4 3 E-3 W, see Ni - 7 E+3 3 E-6 1 E-8 - - Vapor - 2 E+3 8 E-7 3 E-9 - - Nickel-63 D, see Ni 9 E+3 2 E+3 7 E-7 2 E-9 1 E-4 1 E-3 W, see Ni - 3 E+3 1 E-6 4 E-9 - - Vapor - 8 E+2 3 E-7 1 E-9 - - Nickel-65 D, see Ni 8 E+3 2 E+4 1 E-5 3 E-8 1 E-4 1 E-3 W, see Ni - 3 E+4 1 E-5 4 E-8 - - Vapor - 2 E+4 7 E-6 2 E-8 - - Nickel-66 D, see Ni 4 E+2 2 E+3 7 E-7 2 E-9 - - LLI wall (5E+2) - - - 6 E-6 6 E-5 W, see Ni - 6 E+2 3 E-7 9 E-10 - - Vapor - 3 E+3 1 E-6 4 E-9 - - Copper-60 D, all compounds except those given for W and Y 3 E+4 9 E+4 1 E-7 - - St wall (3E+4) - - - 4 E-4 4 E-5 W, sulfides, halides, and nitrates - 1 E+5 5 E-5 2 E-7 - - Y, oxides and hydroxides - 1 E+5 4 E-6 1 E-7 - - Copper-61 D, see Cu Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Cu - - - Y, see Cu - - - Copper-64 D, see Cu W, see Cu - - - Y, see Cu - - - Copper-67 D, see Cu W, see Cu - - - Y, see Cu - - - Zinc-62 Y, all compounds Zinc-63 Y, all compounds - - St wall (3E+4) - - - Zinc-65 Y, all compounds Zinc-69m Y, all compounds Zinc-69 Y, all compounds Zinc-71m Y, all compounds Zinc-72 Y, all compounds Gallium-65 D, all compounds except those given for W - - St wall (6E+4) - - - W, oxides, hydroxides, carbides, halides, and nitrates - - - Gallium-66 D, see Ga W, see Ga - - - Gallium-67 D, see Ga W, see Ga - - - Gallium-68 D, see Ga W, see Ga - - - Gallium-70 D, see Ga - - St wall (7E+4) - - - W, see Ga - - - Gallium-72 D, see Ga Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Ga - - - Gallium-73 D, see Ga W, see Ga - - - Germanium-66 D, all compounds except those given for W W, oxides, sulfides, and halides - - - Germanium-67 D, see Ge - - St wall (4E+4) - - - W, see Ge - - - Germanium-68 D, see Ge W, see Ge - - - Germanium-69 D, see Ge W, see Ge - - - Germanium-71 D, see Ge W, see Ge - - - Germanium-75 D, see Ge - - St wall (7E+4) - - - W, see Ge - - - Germanium-77 D, see Ge W, see Ge - - - Germanium-78 D, see Ge - - St wall (2E+4) - - - W, see Ge - - - Arsenic-69 W, all compounds - - St wall (4E+4) - - - Arsenic-70 W, all compounds Arsenic-71 W, all compounds Arsenic-72 W, all compounds Arsenic-73 W, all compounds Arsenic-74 W, all compounds Arsenic-76 W, all compounds Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Arsenic-77 W, all compounds - - LLI wall (5E+3) - - - Arsenic-78 W, all compounds Selenium-70 D, all compounds except those given for W W, oxides, hydroxides, carbides, and elemental Se - - Selenium-73m D, see Se W, see Se - - Selenium-73 D, see Se W, see Se - - - Selenium-75 D, see Se W, see Se - - - Selenium-79 D, see Se W, see Se - - - Selenium-81m D, see Se W, see Se - - Selenium-81 D, see Se - - St wall (8E+4) - - - W, see Se - - - Selenium-83 D, see Se W, see Se - - Bromine-74m D, bromides of H, Li, Na, K, Rb, Cs, and Fr - - St wall (2E+4) - - - W, bromides of lantha- nides, Be, Mg, Ca, Sr, Ba, Ra, Al, Ga, In, Tl, Ge, Sn, Pb, As, Sb, Bi, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Mn, Tc, and Re - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Bromine-74 D, see Br - - 74m St wall (4E+4) - - - W, see Br - - - 74m Bromine-75 D, see Br - - 74m St wall (4E+4) - - - W, see Br - - - 74m Bromine-76 D, see Br 74m W, see Br - - - 74m Bromine-77 D, see Br 74m W, see Br - - - 74m Bromine-80m D, see Br 74m W, see Br - - - 74m Bromine-80 D, see Br - - 74m St wall (9E+4) - - - W, see Br - - - 74m Bromine-82 D, see Br 74m W, see Br - - - 74m Bromine-83 D, see Br - - 74m St wall (7E+4) - - - W, see Br - - - 74m Bromine-84 D, see Br - - 74m St wall (3E+4) - - - W, see Br - - - 74m Krypton-74 Submersion - - - - Krypton-76 Submersion - - - - Krypton-77 Submersion - - - - Krypton-79 Submersion - - - - Krypton-81 Submersion - - - - Krypton-83m Submersion - - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Krypton-85m Submersion - - - - Krypton-85 Submersion - - - - Krypton-87 Submersion - - - - Krypton-88 Submersion - - - - Rubidium-79 D, all compounds - - St wall (6E+4) - - - Rubidium-81m D, all compounds - - St wall (3E+5) - - - Rubidium-81 D, all compounds Rubidium-82m D, all compounds Rubidium-83 D, all compounds Rubidium-84 D, all compounds Rubidium-86 D, all compounds Rubidium-87 D, all compounds Rubidium-88 D, all compounds - - St wall (3E+4) - - - Rubidium-89 D, all compounds - - St wall (6E+4) - - - Strontium-80 D, all soluble compounds except SrTiO Y, all insoluble compounds and SrTi0 - - - Strontium-81 D, see Sr Y, see Sr - - Strontium-82 D, see Sr - - LLI wall (2E+2) - - - Y, see Sr - - Strontium-83 D, see Sr Y, see Sr - - Strontium-85m D, see Sr Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Sr - - - Strontium-85 D, see Sr Y, see Sr - - - Strontium-87m D, see Sr Y, see Sr - - Strontium-89 D, see Sr - - LLI wall (6E+2) - - - Y, see Sr - - Strontium-90 D, see Sr - - - Bone surf (4E+1) Bone surf (2E+1) - Y, see Sr - - - Strontium-91 D, see Sr Y, see Sr - - - Strontium-92 D, see Sr Y, see Sr - - - Yttrium-86m W, all compounds except those given for Y E- 88 Y, oxides and hydroxides - - - Yttrium-86 W, see Y 86m Y, see Y - - - 86m Yttrium-87 W, see Y 86m Y, see Y - - - 86m Yttrium-88 W, see Y 86m Y, see Y - - - 86m Yttrium-90m W, see Y 86m Y, see Y - - - 86m Yttrium-90 W, see Y - - 86m LLI wall (5E+2) - - - Y, see Y - - - 86m Yttrium-91m W, see Y 86m Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Y - - - 86m Yttrium-91 W, see Y - - 86m LLI wall (6E+2) - - - Y, see Y - - - 86m Yttrium-92 W, see Y 86m Y, see Y - - - 86m Yttrium-93 W, see Y 86m Y, see Y - - - 86m Yttrium-94 W, see Y - - 86m St wall (3E+4) - - - Y, see Y - - - 86m Yttrium-95 W, see Y - - 86m St wall (5E+4) - - - Y, see Y - - - 86m Zirconium-86 D, all compounds except those given for W and Y W, oxides, hydroxides, halides, and nitrates - - - Y, carbide - - - Zirconium-88 D, see Zr 9 E-8 W, see Zr - - - Y, see Zr - - - Zirconium-89 D, see Zr W, see Zr - - - Y, see Zr - - - Zirconium-93 D, see Zr - - - Bone surf (3E+3) Bone surf (2E+1) - W, see Zr - E- 18 - - - - Bone surf (6E+1) - - - Y, see Zr - - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) - Bone surf (7E+1) - - - Zirconium-95 D, see Zr - Bone surf (3E+2) - - - W, see Zr - - - Y, see Zr - - - Zirconium-97 D, see Zr W, see Zr - - - Y, see Zr - - - Niobium-88 W, all compounds except those given for Y - - St wall (7E+4) - - - Y, oxides and hydroxides - - - Niobium-89 (66 min) W, see Nb Y, see Nb - - - Niobium-89 (122 min) W, see Nb Y, see Nb - - - Niobium-90 W, see Nb Y, see Nb - - - Niobium-93m W, see Nb - - LLI wall (1E+4) - - - Y, see Nb - - - Niobium-94 W, see Nb Y, see Nb - - - Niobium-95m W, see Nb - - LLI wall (2E+3) - - - Y, see Nb - - - Niobium-95 W, see Nb Y, see Nb - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Niobium-96 W, see Nb Y, see Nb - - - Niobium-97 W, see Nb Y, see Nb - - - Niobium-98 W, see Nb Y, see Nb - - - Molybdenum-90 D, all compounds except those given for Y Y, oxides, hydroxides, and MoS - - Molybdenum-93m D, see Mo Y, see Mo - - Molybdenum-93 D, see Mo Y, see Mo - - Molybdenum-99 D, see Mo - - LLI wall (1E+3) - - - Y, see Mo - - Molybdenum-101 D, see Mo - - St wall (5E+4) - - - Y, see Mo - - - Technetium-93m D, all compounds except those given for W W, oxides, hydroxides, halides, and nitrates - - - Technetium-93 D, see Tc 93m W, see Tc - - - 93m Technetium-94m D, see Tc 93m W, see Tc - - - 93m Technetium-94 D, see Tc 93m W, see Tc - - - 93m Technetium-95m D, see Tc 93m W, see Tc - - - 93m Technetium-95 D, see Tc 93m Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Tc - - - 93m Technetium-96m D, see Tc 93m W, see Tc - - - 93m Technetium-96 D, see Tc 93m W, see Tc - - - 93m Technetium-97m D, see Tc - 93m - St wall (7E+3) - - - W, see Tc - - - 93m Technetium-97 D, see Tc 93m W, see Tc - - - 93m Technetium-98 D, see Tc 93m W, see Tc - - - 93m Technetium-99m D, see Tc 93m W, see Tc - - - 93m Technetium-99 D, see Tc - 93m - St wall (6E+3) - - - W, see Tc - - - 93m Technetium-101 D, see Tc - - 93m St wall (1E+5) - - - W, see Tc - - - 93m Technetium-104 D, see Tc - - 93m St wall (3E+4) - - - W, see Tc - - - 93m Ruthenium-94 D, all compounds except those given for W and Y W, halides - - - Y, oxides and hydroxides - - - Ruthenium-97 D, see Ru W, see Ru - - - Y, see Ru - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Ruthenium-103 D, see Ru W, see Ru - - - Y, see Ru - - - Ruthenium-105 D, see Ru W, see Ru - - - Y, see Ru - - - Ruthenium-106 D, see Ru - - LLI wall (2E+2) - - - W, see Ru - - - Y, see Ru - - - Rhodium-99m D, all compounds except those given for W and Y W, halides - - - Y, oxides and hydroxides - - - Rhodium-99 D, see Rh 99m W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-100 D, see Rh 99m W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-101m D, see Rh 99m W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-101 D, see Rh E- 35 99m W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-102m D, see Rh - - 99m LLI wall (1E+3) - - - W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-102 D, see Rh 99m W, see Rh - - - 99m Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Rh - - - 99m Rhodium-103m D, see Rh 99m W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-105 D, see Rh - - 99m LLI wall (4E+3) - - - W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-106m D, see Rh 99m W, see Rh - - - 99m Y, see Rh - - - 99m Rhodium-107 D, see Rh - - 99m St wall (9E+4) - - - 12 E- W, see Rh - - - 99m Y, see Rh - - - 99m Palladium-100 D, all compounds except those given for W and Y W, nitrates - - - Y, oxides and hydroxides - - - Palladium-101 D, see Pd W, see Pd - - - Y, see Pd - - - Palladium-103 D, see Pd - - LLI wall (7E+3) - - - W, see Pd - - - Y, see Pd - - - Palladium-107 D, see Pd - - - LLI wall (4E+4) Kidneys (2E+4) - W, see Pd - - - Y, see Pd - - - Palladium-109 D, see Pd Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Pd - - - Y, see Pd - - - Silver-102 D, all compounds except those given for W and Y - - St wall (6E+4) - - - W, nitrates and sulfides - - - Y, oxides and hydroxides - - - Silver-103 D, see Ag W, see Ag - - - Y, see Ag - - - Silver-104m D, see Ag W, see Ag - - - Y, see Ag - - - Silver-104 D, see Ag W, see Ag - - - Y, see Ag - - - Silver-105 D, see Ag W, see Ag - - - Y, see Ag - - - Silver-106m D, see Ag W, see Ag - - - Y, see Ag - - - Silver-106 D, see Ag - - St. wall (6E+4) - - - W, see Ag - - - Y, see Ag - - - Silver-108m D, see Ag W, see Ag - - - Y, see Ag - - - Silver-110m D, see Ag W, see Ag - - - Y, see Ag - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Silver-111 D, see Ag E+ 92 - - - LLI wall (1E+3) Liver (2E+3) - W, see Ag - - - Y, see Ag - - - Silver-112 D, see Ag W, see Ag - - - Y, see Ag - - - Silver-115 D, see Ag - - St wall (3E+4) - - - W, see Ag - - - Y, see Ag - - - Cadmium-104 D, all compounds except those given for W and Y 34 E- W, sulfides, halides, and nitrates - - - Y, oxides and hydroxides - - - Cadmium-107 D, see Cd W, see Cd - - - Y, see Cd - - - Cadmium-109 D, see Cd - - - Kidneys (4E+2) Kidneys (5E+1) - W, see Cd - - - - - Kidneys (1E+2) - - - Y, see Cd - - - Cadmium-113m D, see Cd - - - Kidneys (4E+1) Kidneys (4E+0) - W, see Cd - - - - - Kidneys (1E+1) - - - Y, see Cd - - - Cadmium-113 D, see Cd - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Kidneys (3E+1) Kidneys (3E+0) - W, see Cd - - - - - Kidneys (1E+1) - - - Y, see Cd - - - Cadmium-115m D, see Cd - - Kidneys (8E+1) - - - W, see Cd - - - Y, see Cd - - - Cadmium-115 D, see Cd 13 E+ - - LLI wall (1E+3) - - - W, see Cd - - - Y, see Cd - - - Cadmium-117m D, see Cd W, see Cd - - - Y, see Cd - E+ 14 - - Cadmium-117 D, see Cd W, see Cd - - - Y, see Cd - - - Indium-109 D, all compounds except those given for W W, oxides, hydroxides, halides, and nitrates - - - Indium-110 D, see In (69.1 min) W, see In - - - Indium-110 D, see In (4.9 h) W, see In - - - Indium-111 D, see In Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see In - - - Indium-112 D, see In W, see In - - - Indium-113m D, see In W, see In - - - Indium-114m D, see In - - LLI wall (4E+2) - - - W, see In - - - Indium-115m D, see In W, see In - - - Indium-115 D, see In W, see In - - - Indium-116m D, see In W, see In - - - Indium-117m D, see In W, see In - - - Indium-117 D, see In W, see In - - - Indium-119m D, see In - - St wall (5E+4) - - - W, see In - - - Tin-110 D, all compounds except those given for W W, sulfides, oxides, hydroxides, halides, nitrates, and stannic phosphate - - - Tin-111 D, see Sn W, see Sn - - - Tin-113 D, see Sn - - LLI wall (2E+3) - - - W, see Sn - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Tin-117m D, see Sn - - - LLI wall (2E+3) Bone surf (2E+3) - W, see Sn - - - Tin-119m D, see Sn - - LLI wall (4E+3) - - - W, see Sn - - - Tin-121m D, see Sn - - LLI wall (4E+3) - - - W, see Sn - - - Tin-121 D, see Sn - - LLI wall (6E+3) - - - W, see Sn - - - Tin-123m D, see Sn W, see Sn - - - Tin-123 D, see Sn - - LLI wall (6E+2) - - - W, see Sn - - - Tin-125 D, see Sn - - LLI wall (5E+2) - - - W, see Sn - - - Tin-126 D, see Sn W, see Sn - - - Tin-127 D, see Sn W, see Sn - - - Tin-128 D, see Sn W, see Sn - - - Antimony-115 D, all compounds except those given for W Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, oxides, hydroxides, halides, sulfides, sulfates, and nitrates - - - Antimony-116m D, see Sb W, see Sb - - - Antimony-116 D, see Sb - - St wall (9E+4) - - - W, see Sb - - - Antimony-117 D, see Sb W, see Sb - - - Antimony-118m D, see Sb W, see Sb - - Antimony-119 D, see Sb W, see Sb - - Antimony-120 D, see Sb - - (16 min) St wall (2E+5) - - - W, see Sb - - - Antimony-120 D, see Sb (5.76 d) W, see Sb - - Antimony-122 D, see Sb - - LLI wall (8E+2) - - - W, see Sb - - Antimony-124m D, see Sb W, see Sb - - Antimony-124 D, see Sb W, see Sb - - Antimony-125 D, see Sb W, see Sb - - - Antimony-126m D, see Sb - - St wall (7E+4) - - - W, see Sb - - - Antimony-126 D, see Sb Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Sb - - Antimony-127 D, see Sb - - LLI wall (8E+2) - - - W, see Sb - - Antimony-128 D, see Sb - - (10.4 min) St wall (1E+5) - - - W, see Sb - - - Antimony-128 D, see Sb (9.01 h) W, see Sb - - - Antimony-129 D, see Sb W, see Sb - - - Antimony-130 D, see Sb W, see Sb - - - Antimony-131 D, see Sb - - - Thyroid (2E+4) Thyroid (4E+4) - W, see Sb - - - - Thyroid (4E+4) - - - Tellurium-116 D, all compounds except those given for W W, oxides, hydroxides, and nitrates - - - Tellurium-121m D, see Te - - - Bone surf (7E+2) Bone surf (4E+2) - W, see Te - - - Tellurium-121 D, see Te W, see Te - E- 49 - - Tellurium-123m D, see Te - - - Bone surf (1E+3) Bone surf (5E+2) - W, see Te - - - Tellurium-123 D, see Te - - Bone surf (1E+3) Bone surf (5E+2) - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Te - - - - - Bone surf (1E+3) - - - Tellurium-125m D, see Te - - - Bone surf (1E+3) Bone surf (1E+3) - W, see Te - - - Tellurium-127m D, see Te - - Bone surf (4E+2) - - - W, see Te - - - Tellurium-127 D, see Te W, see Te - - - Tellurium-129m D, see Te W, see Te - - - Tellurium-129 D, see Te W, see Te - - - Tellurium-131m D, see Te - - - Thyroid (6E+2) Thyroid (1E+3) - W, see Te - - - - - Thyroid (9E+2) - - - Tellurium-131 D, see Te - - - Thyroid (6E+3) Thyroid (1E+4) - W, see Te - E- 26 - - - - Thyroid (1E+4) - - - Tellurium-132 D, see Te - - - Thyroid (7E+2) Thyroid (8E+2) - W, see Te - - - - - Thyroid (6E+2) - - - Tellurium-133m D, see Te - - - Thyroid (6E+3) Thyroid (1E+4) - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Te - - - - - Thyroid (1E+4) - - - Tellurium-133 D, see Te - - - Thyroid (3E+4) Thyroid (6E+4) - W, see Te - - - - - Thyroid (6E+4) - - - Tellurium-134 D, see Te - - - Thyroid (2E+4) Thyroid (5E+4) - W, see Te - - - - - Thyroid (5E+4) - - Iodine-120m D, all compounds - - Thyroid (1E+4) - - - Iodine-120 D, all compounds - - - Thyroid (8E+3) Thyroid (1E+4) - Iodine-121 D, all compounds - - - Thyroid (3E+4) Thyroid (5E+4) - Iodine-123 D, all compounds - - - Thyroid (1E+4) Thyroid (2E+4) - Iodine-124 D, all compounds - - - Thyroid (2E+2) Thyroid (3E+2) - Iodine-125 D, all compounds - - - Thyroid (1E+2) Thyroid (2E+2) - Iodine-126 D, all compounds - - - Thyroid (7E+1) Thyroid (1E+2) - Iodine-128 D, all compounds - - St wall (6E+4) - - - Iodine-129 D, all compounds - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Thyroid (2E+1) Thyroid (3E+1) - Iodine-130 D, all compounds - - - Thyroid (1E+3) Thyroid (2E+3) - Iodine-131 D, all compounds - - - Thyroid (9E+1) Thyroid (2E+2) - Iodine-132m D, all compounds - - - Thyroid (1E+4) Thyroid (2E+4) - Iodine-132 D, all compounds - - - Thyroid (9E+3) Thyroid (1E+4) - Iodine-133 D, all compounds - - - Thyroid (5E+2) Thyroid (9E+2) - Iodine-134 D, all compounds - - Thyroid (3E+4) - - - Iodine-135 D, all compounds - - - Thyroid (3E+3) Thyroid (4E+3) - Xenon-120 Submersion - - - - Xenon-121 Submersion - - - - Xenon-122 Submersion - - - - Xenon-123 Submersion - - - - Xenon-125 Submersion - - - - Xenon-127 Submersion - - - - Xenon-129m Submersion - - - - Xenon-131m Submersion - - - - Xenon-133m Submersion - - - - Xenon-133 Submersion - - - - Xenon-135m Submersion - - - - Xenon-135 Submersion - - - - Xenon-138 Submersion - - - - Cesium-125 D, all compounds - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) St wall (9E+4) - - - Cesium-127 D, all compounds Cesium-129 D, all compounds Cesium-130 D, all compounds - - St wall (1E+5) - - - Cesium-131 D, all compounds Cesium-132 D, all compounds Cesium-134m D, all compounds - - St wall (1E+5) - - - 22 E- Cesium-134 D, all compounds Cesium-135m D, all compounds Cesium-135 D, all compounds Cesium-136 D, all compounds Cesium-137 D, all compounds Cesium-138 D, all compounds - - St wall (3E+4) - - - 43 E- Barium-126 D, all compounds Barium-128 D, all compounds Barium-131m D, all compounds - - St wall (5E+5) - - - 72 E- Barium-131 D, all compounds Barium-133m D, all compounds - - LLI wall (3E+3) - - - Barium-133 D, all compounds Barium-135m D, all compounds Barium-139 D, all compounds Barium-140 D, all compounds - - LLI wall (6E+2) - - - Barium-141 D, all compounds Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Barium-142 D, all compounds Lanthanum-131 D, all compounds except those given for W W, oxides and hydroxides - - - Lanthanum-132 D, see La W, see La - - - Lanthanum-135 D, see La W, see La - - - Lanthanum-137 D, see La - Liver (7E+1) - - - W, see La - - - - - Liver (3E+2) - - - Lanthanum-138 D, see La W, see La - - - Lanthanum-140 D, see La W, see La - - - Lanthanum-141 D, see La W, see La - - - Lanthanum-142 D, see La W, see La - - - Lanthanum-143 D, see La - - St wall (4E+4) - - - W, see La - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Cerium-134 W, all compounds except those given for Y - - LLI wall (6E+2) - - - Y, oxides, hydroxides, and fluorides - - - Cerium-135 W, see Ce Y, see Ce - - - Cerium-137m W, see Ce - - LLI wall (2E+3) - - - Y, see Ce - - - Cerium-137 W, see Ce Y, see Ce - - - Cerium-139 W, see Ce Y, see Ce - - - Cerium-141 W, see Ce - - LLI wall (2E+3) - - - Y, see Ce - - - Cerium-143 W, see Ce - - LLI wall (1E+3) - - - Y, see Ce - - - Cerium-144 W, see Ce - - LLI wall (3E+2) - - - Y, see Ce - - - Praseodymium-136 W, all compounds except those given for Y - - St wall (7E+4) - - - Y, oxides, hydroxides, carbides, and fluorides - - - Praseodymium-137 W, see Pr Y, see Pr - - - Praseodymium-138m W, see Pr Y, see Pr - - - Praseodymium-139 W, see Pr Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Pr - - - Praseodymium- 142m2 W, see Pr Y, see Pr - - - Praseodymium-142 W, see Pr Y, see Pr - - - Praseodymium-143 W, see Pr - - LLI wall (1E+3) - - - Y, see Pr - - - Praseodymium-144 W, see Pr - - St wall (4E+4) - - - Y, see Pr - - - Praseodymium-145 W, see Pr Y, see Pr - - - Praseodymium-147 W, see Pr - - St wall (8E+4) - - - Y, see Pr - - - Neodymium-136 W, all compounds except those given for Y Y, oxides, hydroxides, carbides, and fluorides - - - Neodymium-138 W, see Nd Y, see Nd - - - Neodymium-139m W, see Nd Y, see Nd - - - Neodymium-139 W, see Nd Y, see Nd - - - Neodymium-141 W, see Nd Y, see Nd - - - Neodymium-147 W, see Nd - - LLI wall (1E+3) - - - Y, see Nd - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Neodymium-149 W, see Nd Y, see Nd - - - Neodymium-151 W, see Nd Y, see Nd - - - Promethium-141 W, all compounds except those given for Y - - St wall (6E+4) - - - Y, oxides, hydroxides, carbides, and fluorides - - - Promethium-143 W, see Pm Y, see Pm - - - Promethium-144 W, see Pm Y, see Pm - - - Promethium-145 W, see Pm - - Bone surf (2E+2) - - - Y, see Pm - - - Promethium-146 W, see Pm Y, see Pm - - - Promethium-147 W, see Pm - - - LLI wall (5E+3) Bone surf (2E+2) - Y, see Pm - - - Promethium-148m W, see Pm Y, see Pm - - - Promethium-148 W, see Pm - - LLI wall (5E+2) - - - Y, see Pm - - - Promethium-149 W, see Pm - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) LLI wall (1E+3) - - - Y, see Pm - - - Promethium-150 W, see Pm Y, see Pm - - - Promethium-151 W, see Pm Y, see Pm - - - Samarium-141m W, all compounds Samarium-141 W, all compounds - - St wall (6E+4) - - - Samarium-142 W, all compounds Samarium-145 W, all compounds Samarium-146 W, all compounds - - - Bone surf (3E+1) Bone surf (6E-2) - Samarium-147 W, all compounds - - - Bone surf (3E+1) Bone surf (7E-2) - Samarium-151 W, all compounds - - - LLI wall (1E+4) Bone surf (2E+2) - Samarium-153 W, all compounds - - LLI wall (2E+3) - - - Samarium-155 W, all compounds - - St wall (8E+4) - - - Samarium-156 W, all compounds Europium-145 W, all compounds Europium-146 W, all compounds Europium-147 W, all compounds Europium-148 W, all compounds Europium-149 W, all compounds Europium-150 (12.62 h) W, all compounds Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Europium-150 (34.2 y) W, all compounds Europium-152m W, all compounds Europium-152 W, all compounds Europium-154 W, all compounds Europium-155 W, all compounds - - Bone surf (1E+2) - - - Europium-156 W, all compounds Europium-157 W, all compounds Europium-158 W, all compounds Gadolinium-145 D, all compounds except those given for W - - St wall (5E+4) - - - W, oxides, hydroxides, and fluorides - - - Gadolinium-146 D, see Gd W, see Gd - - - Gadolinium-147 D, see Gd W, see Gd - - - Gadolinium-148 D, see Gd - - - Bone surf (2E+1) Bone surf (2E-2) - W, see Gd - - - - - Bone surf (6E-2) - - - Gadolinium-149 D, see Gd W, see Gd - - - Gadolinium-151 D, see Gd - - Bone surf (6E+2) - - - W, see Gd - - - Gadolinium-152 D, see Gd - - - Bone surf (3E+1) Bone surf (2E-2) - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Gd - - - - - Bone surf (8E-2) - - - Gadolinium-153 D, see Gd - Bone surf (2E+2) - - - W, see Gd - - - Gadolinium-159 D, see Gd W, see Gd - - - Terbium-147 W, all compounds Terbium-149 W, all compounds Terbium-150 W, all compounds Terbium-151 W, all compounds Terbium-153 W, all compounds Terbium-154 W, all compounds Terbium-155 W, all compounds Terbium-156m (5.0 h) W, all compounds Terbium-156m (24.4 h) W, all compounds Terbium-156 W, all compounds Terbium-157 W, all compounds - - - LLI wall (5E+4) Bone surf (6E+2) - Terbium-158 W, all compounds Terbium-160 W, all compounds Terbium-161 W, all compounds - - LLI wall (2E+3) - - - Dysprosium-155 W, all compounds Dysprosium-157 W, all compounds Dysprosium-159 W, all compounds Dysprosium-165 W, all compounds Dysprosium-166 W, all compounds - - LLI wall (8E+2) - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Holmium-155 W, all compounds Holmium-157 W, all compounds Holmium-159 W, all compounds Holmium-161 W, all compounds Holmium-162m W, all compounds Holmium-162 W, all compounds - - St wall (8E+5) - - - Holmium-164m W, all compounds Holmium-164 W, all compounds - - St wall (2E+5) - - - Holmium-166m W, all compounds Holmium-166 W, all compounds - - LLI wall (9E+2) - - - Holmium-167 W, all compounds Erbium-161 W, all compounds Erbium-165 W, all compounds Erbium-169 W, all compounds - - LLI wall (4E+3) - - - Erbium-171 W, all compounds Erbium-172 W, all compounds - - LLI wall (1E+3) - - - Thulium-162 W, all compounds - - St wall (7E+4) - - - Thulium-166 W, all compounds Thulium-167 W, all compounds - - LLI wall (2E+3) - - - Thulium-170 W, all compounds - - LLI wall (1E+3) - - - Thulium-171 W, all compounds - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) LLI wall (1E+4) Bone surf (6E+2) - Thulium-172 W, all compounds - - LLI wall (8E+2) - - - Thulium-173 W, all compounds Thulium-175 W, all compounds - - St wall (9E+4) - - - Ytterbium-162 W, all compounds except those given for Y Y, oxides, hydroxides, and fluorides - - - Ytterbium-166 W, see Yb Y, see Yb - - - Ytterbium-167 W, see Yb Y, see Yb - - - Ytterbium-169 W, see Yb Y, see Yb - - - Ytterbium-175 W, see Yb - - - - - Y, see Yb - - - Ytterbium-177 W, see Yb Y, see Yb - - - Ytterbium-178 W, see Yb Y, see Yb - - - Lutetium-169 W, all compounds except those given for Y Y, oxides, hydroxides, and fluorides - - - Lutetium-170 W, see Lu Y, see Lu - 39 E- - - Lutetium-171 W, see Lu Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Lu - - - Lutetium-172 W, see Lu Y, see Lu - - - Lutetium-173 W, see Lu - - Bone surf (5E+2) - - - Y, see Lu - - - Lutetium-174m W, see Lu - - - LLI wall (3E+3) Bone surf (3E+2) - Y, see Lu - - - Lutetium-174 W, see Lu - - Bone surf (2E+2) - - - Y, see Lu - - - Lutetium-176m W, see Lu Y, see Lu - - - Lutetium-176 W, see Lu - - Bone surf (1E+1) - - - Y, see Lu - - - Lutetium-177m W, see Lu - - Bone surf (1E+2) - - - Y, see Lu - - - Lutetium-177 W, see Lu - - LLI wall (3E+3) - - - Y, see Lu - - - Lutetium-178m W, see Lu - - St. wall (6E+4) - - - Y, see Lu - - - Lutetium-178 W, see Lu - - St wall (4E+4) - - - Y, see Lu - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Lutetium-179 W, see Lu Y, see Lu - - - Hafnium-170 D, all compounds except those given for W 89 E- W, oxides, hydroxides, carbides, and nitrates - - - Hafnium-172 D, see Hf - - Bone surf (2E+1) - - - W, see Hf - 41 E+ - - - - Bone surf (6E+1) - - - Hafnium-173 D, see Hf W, see Hf - - - Hafnium-175 D, see Hf - - Bone surf (1E+3) - - - W, see Hf - - - Hafnium-177m D, see Hf W, see Hf - - - Hafnium-178m D, see Hf - - Bone surf (2E+0) - - - W, see Hf - - - - - Bone surf (9E+0) - - - Hafnium-179m D, see Hf - - Bone surf (6E+2) - - - W, see Hf - - - Hafnium-180m D, see Hf W, see Hf - - - Hafnium-181 D, see Hf 13 E+ - - Bone surf (4E+2) - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Hf - - - Hafnium-182m D, see Hf W, see Hf - - - Hafnium-182 D, see Hf - - - Bone surf (4E+2) Bone surf (2E+0) - W, see Hf - - - - - Bone surf (7E+0) - - - Hafnium-183 D, see Hf W, see Hf - - - Hafnium-184 D, see Hf E+ 23 W, see Hf - - - Tantalum-172 W, all compounds except those given for Y Y, elemental Ta, oxides, hydroxides, halides, carbides, nitrates, and nitrides - - - Tantalum-173 W, see Ta Y, see Ta - - - Tantalum-174 W, see Ta Y, see Ta - - - Tantalum-175 W, see Ta Y, see Ta - - - Tantalum-176 W, see Ta Y, see Ta - - - Tantalum-177 W, see Ta Y, see Ta - - - Tantalum-178 W, see Ta Y, see Ta - - - Tantalum-179 W, see Ta Y, see Ta - - - Tantalum-180m W, see Ta Y, see Ta - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Tantalum-180 W, see Ta Y, see Ta - - - Tantalum-182m W, see Ta - - St wall (2E+5) - - - Y, see Ta - - - Tantalum-182 W, see Ta Y, see Ta - - - Tantalum-183 W, see Ta - - LLI wall (1E+3) - - - Y, see Ta - - - Tantalum-184 W, see Ta Y, see Ta - - - Tantalum-185 W, see Ta Y, see Ta - - - Tantalum-186 W, see Ta - - St wall (7E+4) - - - Y, see Ta - - - Tungsten-176 D, all compounds Tungsten-177 D, all compounds Tungsten-178 D, all compounds Tungsten-179 D, all compounds Tungsten-181 D, all compounds Tungsten-185 D, all compounds - - - - - Tungsten-187 D, all compounds Tungsten-188 D, all compounds - - LLI wall (5E+2) - - - Rhenium-177 D, all compounds except those given for W - - St wall (1E+5) - - - W, oxides, hydroxides, and nitrates - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Rhenium-178 D, see Re - - St wall (1E+5) - - - W, see Re - - - Rhenium-181 D, see Re W, see Re - - - Rhenium-182 D, see Re (12.7 h) W, see Re - - - Rhenium-182 D, see Re (64.0 h) W, see Re - - - Rhenium-184m D, see Re W, see Re - - - Rhenium-184 D, see Re W, see Re - - - Rhenium-186m D, see Re - - - St wall (2E+3) St wall (2E+3) - W, see Re - - - Rhenium-186 D, see Re W, see Re - - - Rhenium-187 D, see Re - - St wall (9E+5) - - - W, see Re - - - Rhenium-188m D, see Re W, see Re - - - Rhenium-188 D, see Re Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Re - - - Rhenium-189 D, see Re W, see Re - - - Osmium-180 D, all compounds except those given for W and Y W, halides and nitrates - - - Y, oxides and hydroxides - - - Osmium-181 D, see Os W, see Os - - - Y, see Os - - - Osmium-182 D, see Os W, see Os - - - Y, see Os - - - Osmium-185 D, see Os W, see Os - - - Y, see Os - - - Osmium-189m D, see Os W, see Os - - - Y, see Os - - - Osmium-191m D, see Os W, see Os - - - Y, see Os - - - Osmium-191 D, see Os - - LLI wall (3E+3) - - - W, see Os - - - Y, see Os - - - Osmium-193 D, see Os - - LLI wall (2E+3) - - - W, see Os - - - Y, see Os - - - Osmium-194 D, see Os - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) LLI wall (6E+2) - - - W, see Os - - - Y, see Os - E- 39 - - Iridium-182 D, all compounds except those given for W and Y - - St wall (4E+4) - - - W, halides, nitrates, and metallic iridium - - - Y, oxides and hydroxides - - - Iridium-184 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-185 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-186 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-187 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-188 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-189 D, see Ir - - LLI wall (5E+3) - - - W, see Ir - - - Y, see Ir - - - Iridium-190m D, see Ir W, see Ir - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Ir - - - Iridium-190 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-192m D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-192 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-194m D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-194 D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-195m D, see Ir W, see Ir - - - Y, see Ir - - - Iridium-195 D, see Ir W, see Ir - - - Y, see Ir - - - Platinum-186 D, all compounds Platinum-188 D, all compounds Platinum-189 D, all compounds Platinum-191 D, all compounds Platinum-193m D, all compounds - - LLI wall (3E+4) - - - Platinum-193 D, all compounds - - LLI wall (5E+4) - - - Platinum-195m D, all compounds - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) LLI wall (2E+3) - - - Platinum-197m D, all compounds Platinum-197 D, all compounds Platinum-199 D, all compounds Platinum-200 D, all compounds Gold-193 D, all compounds except those given for W and Y W, halides and nitrates - - - Y, oxides and hydroxides - - - Gold-194 D, see Au W, see Au - - - Y, see Au - - - Gold-195 D, see Au W, see Au - - - Y, see Au - - - Gold-198m D, see Au W, see Au - - - Y, see Au - - - Gold-198 D, see Au W, see Au - - - Y, see Au - - - Gold-199 D, see Au - - LLI wall (3E+3) - - - W, see Au - - - Y, see Au - - - Gold-200m D, see Au W, see Au - - - Y, see Au - - - Gold-200 D, see Au W, see Au - - - Y, see Au - - - Gold-201 D, see Au - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) St wall (9E+4) - - - W, see Au - - - Y, see Au - - - Mercury-193m Vapor - - - Organic D D, sulfates W, oxides, hydroxides, halides, nitrates, and sulfides - - - Mercury-193 Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Mercury-194 Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Mercury-195m Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Mercury-195 Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Mercury-197m Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Mercury-197 Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Mercury-199m Vapor - - - Organic D - - St wall (1E+5) - - - D, see Hg 193m W, see Hg - - - 193m Mercury-203 Vapor - - - Organic D D, see Hg 193m W, see Hg - - - 193m Thallium-194m D, all compounds - - (St wall 7E+4) - - - Thallium-194 D, all compounds - - St wall (3E+5) - - - Thallium-195 D, all compounds Thallium-197 D, all compounds Thallium-198m D, all compounds Thallium-198 D, all compounds Thallium-199 D, all compounds Thallium-200 D, all compounds Thallium-201 D, all compounds Thallium-202 D, all compounds Thallium-204 D, all compounds Lead-195m D, all compounds Lead-198 D, all compounds Lead-199 D, all compounds Lead-200 D, all compounds Lead-201 D, all compounds Lead-202m D, all compounds Lead-202 D, all compounds Lead-203 D, all compounds Lead-205 D, all compounds Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Lead-209 D, all compounds Lead-210 D, all compounds - - - Bone surf (1E+0) Bone surf (4E-1) - Lead-211 D, all compounds Lead-212 D, all compounds - - Bone surf (1E+2) - - - Lead-214 D, all compounds Bismuth-200 D, nitrates W, all other compounds - - - Bismuth-201 D, see Bi W, see Bi - - - Bismuth-202 D, see Bi W, see Bi - - - Bismuth-203 D, see Bi W, see Bi - - - Bismuth-205 D, see Bi W, see Bi - - - Bismuth-206 D, see Bi W, see Bi - - - Bismuth-207 D, see Bi W, see Bi - - - Bismuth-210m D, see Bi - - - Kidneys (6E+1) Kidneys (6E+0) - W, see Bi - - - Bismuth-210 D, see Bi - - Kidneys (4E+2) - - - W, see Bi - - - Bismuth-212 D, see Bi W, see Bi - - - Bismuth-213 D, see Bi Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) W, see Bi - - - Bismuth-214 D, see Bi - - St wall (2E+4) - - - W, see Bi - - - Polonium-203 D, all compounds except those given for W W, oxides, hydroxides, and nitrates - - - Polonium-205 D, see Po W, see Po - - - Polonium-207 D, see Po W, see Po - - - Polonium-210 D, see Po W, see Po - - - Astatine-207 D, halides W - - - Astatine-211 D, halides W - - - Radon-220 With daughters removed - - - With daughters present - (or 12 WLM) (or 1.0 WL) - - Radon-222 With daughters removed - - - With daughters present - (or 4 working level months) (or 0.33 working level) - - Francium-222 D, all compounds Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Francium-223 D, all compounds Radium-223 W, all compounds - - Bone surf (9E+0) - - - Radium-224 W, all compounds - - Bone surf (2E+1) - - - Radium-225 W, all compounds - - Bone surf (2E+1) - - - Radium-226 W, all compounds - - Bone surf (5E+0) - - - Radium-227 W, all compounds - - - Bone surf (2E+4) Bone surf (2E+4) - Radium-228 W, all compounds - - Bone surf (4E+0) - - - Actinium-224 D, all compounds except those given for W and Y - - - LLI wall (2E+3) Bone surf (4E+1) - W, halides and nitrates - - - Y, oxides and hydroxides - - - Actinium-225 D, see Ac - - - LLI wall (5E+1) Bone surf (5E-1) - W, see Ac - - - Y, see Ac - - - Actinium-226 D, see Ac - - - LLI wall (1E+2) Bone surf (4E+0) - W, see Ac - - - Y, see Ac - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Actinium-227 D, see Ac - - - Bone surf (4E-1) Bone surf (8E-4) - W, see Ac - - - - - Bone surf (3E-3) - - - Y, see Ac - - - Actinium-228 D, see Ac - - Bone surf (2E+1) - - - W, see Ac - - - - - Bone surf (6E+1) - - - Y, see Ac - - - Thorium-226 W, all compounds except those given for Y - - St wall (5E+3) - - - Y, oxides and hydroxides - 1 E+ - - Thorium-227 W, see Th Y, see Th - - - Thorium-228 W, see Th - - - Bone surf (1E+1) Bone surf (2E-2) - Y, see Th - - - Thorium-229 W, see Th - - - Bone surf (1E+0) Bone surf (2E-3) - Y, see Th - - - - - Bone surf (3E-3) - - - Thorium-230 W, see Th - - - Bone surf (9E+0) Bone surf (2E-2) - Y, see Th - - - - - Bone surf (2E-2) - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Thorium-231 W, see Th Y, see Th - - - Thorium-232 W, see Th - - - Bone surf (2E+0) Bone surf (3E-3) - Y, see Th - - - - - Bone surf (4E-3) - - - Thorium-234 W, see Th - - LLI wall (4E+2) - - - Y, see Th - - - Protactinium-227 W, all compounds except those given for Y Y, oxides and hydroxides - - - Protactinium-228 W, see Pa - - Bone surf (2E+1) - - - Y, see Pa - - - Protactinium-230 W, see Pa - - Bone surf (9E+2) - - - Y, see Pa - - - Protactinium-231 W, see Pa E- 613 - - - Bone surf (5E-1) Bone surf (4E-3) - Y, see Pa - E- 212 - - - - Bone surf (6E-3) - - - Protactinium-232 W, see Pa E+ 13 E- 99 - - Bone surf (6E+1) - - - Y, see Pa - E+ 61 E- 28 - - - - Bone surf (7E+1) - - - Protactinium-233 W, see Pa E- 37 - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) LLI wall (2E+3) - - - Y, see Pa - - - Protactinium-234 W, see Pa E- 36 Y, see Pa - E- 36 E- 99 - - 3 2 Uranium-230 D, UF , UO F , UO (NO ) - - - Bone surf (6E+0) Bone surf (6E-1) - W, UO , UF , UCl - - - Y, UO , U O - - - Uranium-231 D, see U - - LLI wall (4E+3) - - - W, see U - E+ 63 - - Y, see U - - - Uranium-232 D, see U - - - Bone surf (4E+0) Bone surf (4E-1) - W, see U - - - Y, see U - - - Uranium-233 D, see U - - - Bone surf (2E+1) Bone surf (2E+0) - W, see U - - - Y, see U - E+ 42 - - Uranium-234 D, see U - - - Bone surf (2E+1) Bone surf (2E+0) - W, see U - - - Y, see U - - - Uranium-235 D, see U - - - Bone surf (2E+1) Bone surf (2E+0) - W, see U - - - Y, see U - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Uranium-236 D, see U - - - Bone surf (2E+1) Bone surf (2E+0) - W, see U - E+ 81 - - Y, see U - - - Uranium-237 D, see U - - LLI wall (2E+3) - - - W, see U - - - Y, see U - E- 67 - - Uranium-238 D, see U - - - Bone surf (2E+1) Bone surf (2E+0) - W, see U - - - Y, see U - - - Uranium-239 D, see U W, see U - - - Y, see U - - - Uranium-240 D, see U W, see U - - - Y, see U - - - Uranium-natural D, see U - - - Bone surf (2E+1) Bone surf (2E+0) - W, see U - - - Y, see U - - - Neptunium-232 W, all compounds - Bone surf (5E+2) - - - Neptunium-233 W, all compounds Neptunium-234 W, all compounds E- 49 Neptunium-235 W, all compounds - - - LLI wall (2E+4) Bone surf (1E+3) - Neptunium-236 W, all compounds - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) (1.15E+5 y) Bone surf (6E+0) Bone surf (5E-2) - Neptunium-236 W, all compounds E+ 31 - - - (22.5 h) Bone surf (4E+3) Bone surf (7E+1) - 55 E- Neptunium-237 W, all compounds - - - Bone surf (1E+0) Bone surf (1E-2) - 28 E- Neptunium-238 W, all compounds - Bone surf (2E+2) - - - Neptunium-239 W, all compounds E+ 23 - - LLI wall (2E+3) - - - Neptunium-240 W, all compounds Plutonium-234 W, all compounds except PuO Y, PuO - - - Plutonium-235 W, see Pu Y, see Pu - - - Plutonium-236 W, see Pu - - - Bone surf (4E+0) Bone surf (4E-2) - Y, see Pu - - - Plutonium-237 W, see Pu Y, see Pu - - - Plutonium-238 W, see Pu - - - Bone surf (2E+0) Bone surf (1E-2) - Y, see Pu - - - Plutonium-239 W, see Pu - - - Bone surf (1E+0) Bone surf (1E-2) - Y, see Pu - - - - - Bone surf (2E-2) - - - Plutonium-240 W, see Pu - - - Bone surf (1E+0) Bone surf (1E-2) - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Y, see Pu - - - - - Bone surf (2E-2) - - - Plutonium-241 W, see Pu E+ 41 - - - Bone surf (7E+1) Bone surf (6E-1) - Y, see Pu - - - - - Bone surf (1E+0) - - - Plutonium-242 W, see Pu E+ 73 - - - Bone surf (1E+0) Bone surf (1E-2) - Y, see Pu - - - - - Bone surf (2E-2) - - - Plutonium-243 W, see Pu Y, see Pu - - - Plutonium-244 W, see Pu E+ 81 - - - Bone surf (2E+0) Bone surf (1E-2) - Y, see Pu - - - - - Bone surf (2E-2) - - - Plutonium-245 W, see Pu Y, see Pu - - - Plutonium-246 W, see Pu - - LLI wall (4E+2) - - - Y, see Pu - - - Americium-237 W, all compounds Americium-238 W, all compounds - - Bone surf (6E+3) - - - Americium-239 W, all compounds E- 56 Americium-240 W, all compounds Americium-241 W, all compounds - - - Bone surf (1E+0) Bone surf (1E-2) - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Americium-242m W, all compounds - - - Bone surf (1E+0) Bone surf (1E-2) - Americium-242 W, all compounds - - Bone surf (9E+1) - - - Americium-243 W, all compounds E+ 81 - - - Bone surf (1E+0) Bone surf (1E-2) - Americium-244m W, all compounds E+ 43 - - - St wall (8E+4) Bone surf (7E+3) - 12 E- Americium-244 W, all compounds E- 88 - - Bone surf (3E+2) - - - Americium-245 W, all compounds Americium-246m W, all compounds E- 85 - - St wall (6E+4) - - - Americium-246 W, all compounds Curium-238 W, all compounds Curium-240 W, all compounds - - - Bone surf (8E+1) Bone surf (6E-1) - Curium-241 W, all compounds - - Bone surf (4E+1) - - - Curium-242 W, all compounds - - - Bone surf (5E+1) Bone surf (3E-1) - Curium-243 W, all compounds - - - Bone surf (2E+0) Bone surf (2E-2) - Curium-244 W, all compounds - - - Bone surf (3E+0) Bone surf (2E-2) - Curium-245 W, all compounds - - - Bone surf (1E+0) Bone surf (1E-2) - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Curium-246 W, all compounds E- 312 - - - Bone surf (1E+0) Bone surf (1E-2) - Curium-247 W, all compounds - - - Bone surf (1E+0) Bone surf (1E-2) - Curium-248 W, all compounds - - - Bone surf (4E-1) Bone surf (3E-3) - Curium-249 W, all compounds - - Bone surf (3E+4) - - - Curium-250 W, all compounds - - - Bone surf (6E-2) Bone surf (5E-4) - Berkelium-245 W, all compounds E- 68 E- 29 Berkelium-246 W, all compounds Berkelium-247 W, all compounds - - - Bone surf (1E+0) Bone surf (9E-3) - Berkelium-249 W, all compounds - - - Bone surf (5E+2) Bone surf (4E+0) - Berkelium-250 W, all compounds – - Bone surf (7E+2) - - - Californium-244 W, all compounds except those given for Y - - St wall (3E+4) - - - Y, oxides and hydroxides - - - Californium-246 W, see Cf Y, see Cf - - - Californium-248 W, see Cf - - - Bone surf (2E+1) Bone surf (1E-1) - Y, see Cf - - - Californium-249 W, see Cf - - - Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Bone surf (1E+0) Bone surf (9E-3) - Y, see Cf - - - - - Bone surf (1E-2) - - - Californium-250 W, see Cf - - - Bone surf (2E+0) Bone surf (2E-2) - Y, see Cf - - - Californium-251 W, see Cf - - - Bone surf (1E+0) Bone surf (9E-3) - Y, see Cf - - - - - Bone surf (1E-2) - - - Californium-252 W, see Cf - - - Bone surf (5E+0) Bone surf (4E-2) - Y, see Cf - - - Californium-253 W, see Cf - - Bone surf (4E+2) - - - Y, see Cf - - - Californium-254 W, see Cf Y, see Cf - - - Einsteinium-250 W, all compounds - Bone surf (1E+3) - - - Einsteinium-251 W, all compounds - - Bone surf (1E+3) - - - Einsteinium-253 W, all compounds Einsteinium-254m W, all compounds - - LLI wall (3E+2) - - - Einsteinium-254 W, all compounds - - - Bone surf (2E+1) Bone surf (1E-1) - Fermium-252 W, all compounds Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col. 1 Col. 2 Col. 3 Col. 1 Col. 2 oral Ingestion Inhalation Monthly Average Atomic No. Radionuclide Class ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concen- tration (µCi/ml) Fermium-253 W, all compounds Fermium-254 W, all compounds Fermium-255 W, all compounds Fermium-257 W, all compounds - - - Bone surf (4E+1) Bone surf (2E-1) - Mendelevium-257 W, all compounds - - Bone surf (9E+1) - - - Mendelevium-258 W, all compounds - - - Bone surf (5E+1) Bone surf (3E-1) - - Any single radionuclide not listed above with decay mode other than alpha emission or spontaneous fission and with radioactive half- life less than 2 hours Submersion - E- 17 - - - Any single radionuclide not listed above with decay mode other than alpha emission or spontaneous fis- sion and with radioactive half- life greater than 2 hours - - Any single radionuclide not listed above that decays by alpha emission or spontaneous fission, or any mixture for which either the identity or the concentration of any radio- nuclide in the mixture is not known - FOOTNOTES: "Submersion" means that values given are for submersion in a hemispherical semi-infinite cloud of airborne material. These radionuclides have radiological half-lives of less than 2 hours. The total effective dose equivalent received during operations with these radionuclides might include a significant contribution from external exposure. The DAC values for all radionuclides, other than those designated Class "Submersion," are based upon the committed effective dose equivalent due to the intake of the radionuclide into the body and do NOT include potentially significant contributions to dose equivalent from external exposures. The licensee may substitute 1E-7 :Ci/ml for the listed DAC to account for the submersion dose prospectively, but should use individual monitoring devices or other radiation measuring instruments that measure external exposure to demonstrate compliance with the limits (see 105 CMR 120.213). For soluble mixtures of U-238, U-234, and U-235 in air, chemical toxicity may be the limiting factor (see 105 CMR 120.211(E)). If the percent by weight (enrichment) of U-235 is not greater than 5, the concentration value for a 40-hour workweek is 0.2 milligrams uranium per cubic meter of air average. For any enrichment, the product of the average concentration and time of exposure during a 40-hour workweek shall not exceed 8E-3 (SA) :Ci-hr/ml, where SA is the specific activity of the uranium inhaled. The specific activity for natural uranium is 6.77E-7 curies per gram U. The specific activity for other mixtures of U-238, U-235, and U-234, if not known, shall be: SA = 3.6E-7 curies/gram U U-depleted SA = [0.4 + .38 (enrichment) + 0.0034 (enrichment) ] E-6 , enrichment > 0.72 where enrichment is the percentage by weight of U-235, expressed as percent. NOTE: 1. If the identity of each radionuclide in a mixture is known but the concentration of one or more of the radionuclides in the mixture is not known, the DAC for the mixture shall be the most restrictive DAC of any radionuclide in the mixture. 2. If the identity of each radionuclide in the mixture is not known, but it is known that certain radionuclides specified in this appendix are not present in the mixture, the inhalation ALI, DAC, and effluent and sewage concentrations for the mixture are the lowest values specified in this appendix for any radionuclide that is not known to be absent from the mixture; or Table I Occupational Values Table II Effluent Concentrations Table III Releases to Sewers Col.1 Col. 2 Col. 3 Col.1 Col. 2 Oral Ingestion Inhalation Monthly Average ALI (µCi) ALI (µCi) DAC (µCi/ml) Air (µCi/ml) Water (µCi/ml) Concentration (µCi/ml) If it is known that Ac-227-D and Cm-250-W are not present - 3.00 e-13 - - - If, in addition, it is known that Ac-227-W,Y, Th-229-W,Y, Th- 230-W, Th-232-W,Y, Pa-231-W,Y, Np-237-W, Pu-239-W, Pu- 240-W, Pu-242-W, Am-241-W, Am-242m-W, Am-243-W, Cm- 245-W, Cm-246-W, Cm-247-W, Cm-248-W, Bk-247-W, Cf- 249-W, and Cf-251-W are not present - 0.00 3.00 e-12 - - - If, in addition, it is known that Sm-146-W, Sm-147-W, Gd-148- D,W, Gd-152-D,W, Th-228-W,Y, Th-230-Y, U-232-Y, U-233- Y, U-234-Y, U-235-Y, U-236-Y, U-238-Y, Np-236-W, Pu- 236-W,Y, Pu-238-W,Y, Pu-239-Y, Pu-240-Y, Pu-242-Y, Pu- 244-W,Y, Cm-243-W, Cm-244-W, Cf-248-W, Cf-249-Y, Cf- 250-W,Y, Cf-251-Y, Cf-252-W,Y, and Cf-254-W,Y are not present - 0.07 3.00 e-11 - - - Bi-210m-W, Po-210-D,W, Ra-223-W, Ra-225-W, Ra-226-W, Ac-225-D,W,Y, Th-227-W,Y, U-230-D,W,Y, U-232-D,W, Pu- 241-W, Cm-240-W, Cm-242-W, Cf-248-Y, Es-254-W, Fm- 257-W, and Md-258-W are not present - 0.7 3.00 e-10 - - - If, in addition, it is known that Si-32-Y, Ti-44-Y, Fe-60-D, Sr- 90-Y, Zr-93-D, Cd-113m-D, Cd-113-D, In-115-D,W, La-138- D, Lu-176-W, Hf-178m-D,W, Hf-182-D,W, Bi-210m-D, Ra- 224-W, Ra-228-W, Ac-226-D,W,Y, Pa-230-W,Y, U-233-D,W, U-234-D,W, U-235-D,W, U-236-D,W, U-238-D,W, Pu-241-Y, Bk-249-W, Cf-253-W,Y, and Es-253-W are not present - 3.00 e-09 - - - If it is known that Ac-227-D,W,Y, Th-229-W,Y, Th-232-W,Y, Pa-231-W,Y, Cm-248-W, and Cm-250-W are not present - - - 1.00 e-14 - - If, in addition, it is known that Sm-146-W, Gd-148-D,W, Gd- 152-D, Th-228-W,Y, Th-230-W,Y, U-232-Y, U-233-Y, U-234- Y, U-235-Y, U-236-Y, U-238-Y, U-Nat-Y, Np-236-W, Np- 237-W, Pu-236-W,Y, Pu-238-W,Y, Pu-239-W,Y, Pu-240-W,Y, Pu-242-W,Y, Pu-244-W,Y, Am-241-W, Am-242m-W, Am- 243-W, Cm-243-W, Cm-244-W, Cm-245-W, Cm-246-W, Cm- 247-W, Bk-247-W, Cf-249-W,Y, Cf-250-W,Y, Cf-251-W,Y, Cf-252-W,Y, and Cf-254-W,Y are not present - - - 1.00 e-13 - - If, in addition, it is known that Sm-147-W, Gd-152-W, Pb-210- D, Bi-210m-W, Po-210-D,W, Ra-223-W, Ra-225-W, Ra-226- W, Ac-225-D,W,Y, Th-227-W,Y, U-230-D,W,Y, U-232-D,W, U-Nat-W, Pu-241-W, Cm-240-W, Cm-242-W, Cf-248-W,Y, Es-254-W, Fm-257-W, and Md-258-W are not present - - - 1.00 e-12 - - If, in addition it is known that Fe-60, Sr-90, Cd-113m, Cd-113, In-115, I-129, Cs-134, Sm-145, Sm-147, Gd-148, Gd-152, Hg- 194 (organic), Bi-210m, Ra-223, Ra-224, Ra-225, Ac-225, Th- 228, Th-230, U-233, U-234, U-235, U-236, U-238, U-Nat, Cm- 242, Cf-248, Es-254, Fm-257, and Md-258 are not present - - - - 0.00 3. If a mixture of radionuclides consists of uranium and its daughters in ore dust (10 :m AMAD particle distribution assumed) prior to chemical separation of the uranium from the ore, the following values may be used for the DAC of the mixture: 6E-11 :Ci of gross alpha activity from uranium-238, uranium-234, thorium-230, and radium-226 per milliliter of air; 3E-11 :Ci of natural uranium per milliliter of air; or 45 micrograms of natural uranium per cubic meter of air. 4. If the identity and concentration of each radionuclide in a mixture are known, the limiting values should be derived as follows: determine, for each radionuclide in the mixture, the ratio between the concentration present in the mixture and the concentration otherwise established in 105 CMR 120.296: Appendix B for the specific radionuclide when not in a mixture. The sum of such ratios for all of the radionuclides in the mixture may not exceed "1" (i.e., "unity"). Example: If radionuclides "A," "B," and "C" are present in concentrations CA, CB, and CC, A B C and if the applicable DACs are DAC , DAC , and DAC , respectively, then the concentrations shall be limited so that the following relationship exists: A B C C C C # 1 + + A B C DAC DAC DAC 105 CMR: DEPARTMENT OF PUBLIC HEALTH