HAR §12-222.1-9. installed in accordance with ASME CSD-1

New miniature boiler installations shall comply with section 12-222.1-5. (b) Miniature boilers used in generating steam for autoclave sterilizers shall be registered separately from the autoclave. The autoclave shall be registered as a pressure vessel if size and pressure is within limits unless exempted by section 12-220-2.1(c). (c) The maximum allowed working pressure is 100 psi in accordance with the ASME BPVC section 1. (d) Each miniature boiler shall be equipped with a sealed spring-loaded pop safety valve of not less than one-half (1/2) inch NPS. (e) Each steam line from a miniature boiler shall be provided with a steam rated stop valve located as close to the boiler shell or drum as is practicable, except when the boiler and steam receiver is operated as a closed system. (f) Miniature boilers for operation with a definite water level shall be equipped with a glass water gage for determining the water level. The lowest permissible water level for vertical boilers shall be at a point one-third (1/3) of the height of the shell above the bottom head or tube sheet. The following shall apply: (1) Tubular gage glasses on electric boilers shall be equipped with protective rods or shields; and (2) Each gage glass shall be fitted with a drain cock and valve having an unrestricted drain opening of not less than one-fourth (1/4) inch diameter to facilitate water flush draining of the gage glass. (g) Where the boiler is equipped with an internal furnace, the water level shall not be less than one-third (1/3) of the length of the tubes above the top of the furnace tube sheet. (h) In the case of small boilers operated in a closed system where there is insufficient space for the usual glass water gage, water level indicators of the glass bull's eye type may be used. (i) Miniature boilers shall be provided with at least one feed pump or other feeding device, except 222.1-31 3559