R 336.1625
R 336.1625 Emission of volatile organic compound from existing equipment utilized in manufacturing synthesized pharmaceutical products.
Cite as Mich. Admin. Code R 336.1625
Rule 625. (1) A person shall not cause or allow the emission of any volatile organic compound
from existing equipment utilized in the manufacturing of synthesized pharmaceutical products,
unless all of the provisions of this rule are met or unless an equivalent control method, as approved
by the department under R 336.1602(2), is implemented.
(2) A person shall not operate an existing reactor, distillation operation, crystallizer, centrifuge,
or vacuum dryer, unless the emissions from this equipment are controlled by either of the
following:
(a) A condenser, such that the outlet gas temperature does not exceed the following levels:
(i) Minus 25 degrees Celsius (minus 13 degrees Fahrenheit) when the sum of the partial pressure
or pressures of the volatile organic compound or compounds in the gas stream, as measured at 20
degrees Celsius (68 degrees Fahrenheit), is greater than 300 millimeters of mercury (5.8 pounds
per square inch).
(ii) Minus 15 degrees Celsius (5 degrees Fahrenheit) when the sum of the partial pressure or
pressures of the volatile organic compound or compounds in the gas stream, as measured at 20
degrees Celsius (68 degrees Fahrenheit), is greater than 150 millimeters of mercury (2.9 pounds
per square inch).
(iii) Zero degrees Celsius (32 degrees Fahrenheit) when the sum of the partial pressure or
pressures of the volatile organic compound or compounds in the gas stream, as measured at 20
degrees Celsius (68degrees Fahrenheit), is greater than 75 millimeters of mercury (1.5 pounds per
square inch).
(iv) Ten degrees Celsius (50 degrees Fahrenheit) when the sum of the partial pressure or
pressures of the volatile organic compound or compounds in the gas stream, as measured at 20
degrees Celsius (68 degrees Fahrenheit), is greater than 52.5 millimeters of mercury (1.0 pounds
per square inch).
(v) Twenty-five degrees Celsius (77 degrees Fahrenheit) when the sum of the partial pressure
or pressures of the volatile organic compound or compounds in the gas stream, as measured at 20
degrees Celsius (68 degrees Fahrenheit), is greater than 26.2 millimeters of mercury (0.5 pounds
per square inch).
(b) An alternative control technology approved by the department under R 336.1602(2), the use
of which results in an emission level no greater than would occur by meeting the provisions of
subdivision (a) of this subrule. For purposes of comparing the actual emission level from an
alternative control technology to the allowable emission level resulting from meeting the
provisions of subdivision (a) of this subrule, the actual emission level must be determined using
the methods described in 40 CFR part 60, appendix A and the allowable emission level must be
determined using the calculation methods described in appendix B of "Control of Volatile Organic
Emissions From Manufacture of Synthesized Pharmaceutical Products," EPA-450/2-78-029, both
adopted by reference in R 336.1902.
(3) For the purpose of this rule, the sum of the partial pressure or pressures of the volatile organic
compound or compounds in the gas stream is to be determined as follows:
Where:
Pt = ∑
(𝑃𝑃𝑃𝑃)(𝑋𝑋𝑋𝑋)
𝑛𝑛
𝑖𝑖=1
Pt = Sum of the partial pressures of all volatile organic compounds.
Pi = Vapor pressure of volatile organic compounds at 20 degrees Celsius (68 degrees Fahrenheit).
Xi = Mole fraction of volatile organic compounds in liquid mixture.
n = Number of different volatile organic compounds in liquid mixture.
i = Individual volatile organic compound.
The mole fraction, Xi, is determined as follows:
Xi = moles of "i" in liquid mixture total moles of liquid mixture
The total moles of liquid mixture must include both the moles of volatile organic compounds and
volatile inorganic compounds, such as water, in the liquid mixture.
(4) Notwithstanding the provisions of subrule (2)(a) of this rule, a person shall not be required to
reduce the temperature of a gas stream below the freezing point of a condensable component in
that gas stream if it can be demonstrated, using intrinsic chemical data, to the satisfaction of the
department under R 336.1602(3), that in doing so, the condenser would be rendered ineffective. In
this case, the temperature of the gas stream must be reduced as low as can be achieved without
freezing of the condenser occurring.
(5) The provisions of this rule do not apply to any single existing reactor, distillation operation,
crystallizer, centrifuge, or vacuum dryer that has a maximum uncontrolled volatile organic
compound emission rate of less than 15 pounds per day.
(6) A person shall not operate an existing air dryer or production equipment exhaust system unless
the volatile organic compound emissions from this equipment are reduced by not less than 90% if
the uncontrolled volatile organic compound emissions are 330 pounds per day or more or are
reduced to less than or equal to 33 pounds per day if the uncontrolled volatile organic compound
emissions are less than 330 pounds per day.
(7) A person shall not load or allow the loading of a volatile organic compound that has a vapor
pressure of more than 210 millimeters of mercury (4.1 pounds per square inch), as measured at 20
degrees Celsius (68 degrees Fahrenheit), from a truck or railcar into an existing stationary vessel
of more than a 2,000-gallon capacity, unless a vapor balance system or an alternate control system
that provides not less than 90% control of loading emissions is utilized.
(8) A person shall not store a volatile organic compound that has a vapor pressure of more than
75 millimeters of mercury (1.5 pounds per square inch), as measured at 20 degrees Celsius (68
degrees Fahrenheit), in an existing above ground stationary vessel, unless the stationary vessel is
equipped with a pressure/vacuum conservation vent set at plus or minus 1.5 millimeters of mercury
(0.03 pounds per square inch) or an alternate control system at least as effective, under
R 336.1602(2). For purposes of comparing the actual emission level from an alternative control
technology to the allowable emission level resulting from the use of a pressure/vacuum
conservation vent meeting this requirement, the actual emission level must be determined using
the methods described in 40 CFR part 60, appendix A, and the allowable emission level must be
determined using the calculation methods described in appendix B of "Control of Volatile Organic
Emissions From Manufacture of Synthesized Pharmaceutical Products", EPA-450/2-78-029, both
adopted by reference in R 336.1902.
(9) A person shall not operate an existing centrifuge, rotary vacuum filter, or other filter that has
an exposed liquid surface, if the liquid contains a volatile organic compound or compounds and
the sum of the partial pressure or pressures of volatile organic compound or compounds is 26.2
millimeters of mercury (0.5 pounds per square inch) or more, as measured at 20 degrees Celsius
(68 degrees Fahrenheit), unless the equipment is enclosed.
(10) A person shall not operate an existing in-process tank that may contain a volatile organic
compound at any time, unless the tank is equipped with a cover and the cover remains closed,
except when production, sampling, maintenance, or inspection procedures require operator access.
(11) A person shall not operate any existing equipment utilized in the manufacturing of
synthesized pharmaceutical products from which a liquid containing a volatile organic compound
or compounds can be observed dripping or running, unless the leak is repaired immediately, if
possible, but not later than the first time the equipment is off-line for a period of time that is long
enough to complete the repair.
(12) A person who is responsible for the operation of a synthesized pharmaceutical process
subject to the provisions of this rule shall obtain current information and maintain records that are
necessary for a determination of compliance with the provisions of this rule. The information must
include all of the following:
(a) For operations subject to subrule (2) of this rule, all of the following information:
(i) A list of all volatile organic compounds in each gas stream.
(ii) The vapor pressure, as measured at 20 degrees Celsius (68 degrees Fahrenheit), of each
volatile organic compound.
(iii) The mole fraction of each volatile organic compound in the liquid mixture.
(iv) Continuous records of the gas outlet temperature of each condenser or of a parameter that
ensures proper operation of an equivalent control device used pursuant to subrule (2)(b) of this
rule.
(b) For operations that comply with subrule (5) of this rule, the amount of material entering and
exiting each reactor, distillation operation, crystallizer, centrifuge, and vacuum dryer.
(c) For air dryers subject to subrule (6) of this rule, the amount of material entering and exiting
each air dryer.
(d) For operations subject to subrule (7) of this rule, the following information:
(i) The date when each stationary vessel is loaded.
(ii) The type and vapor pressure, as measured at 20 degrees Celsius (68 degrees Fahrenheit), of
each volatile organic compound loaded into each stationary vessel.
(e) For operations subject to subrule (9) of this rule, all of the following information:
(i) A list of all volatile organic compounds in the liquid.
(ii) The vapor pressure, as measured at 20 degrees Celsius (68 degrees Fahrenheit), of each
volatile organic compound.
(iii) The mole fraction of each volatile organic compound in the liquid mixture.
(f) For operations subject to subrule (11) of this rule, the following information:
(i) The date each leak was detected.
(ii) The date each leak was repaired.