WAC 296-826-40050. Other refrigerated storage equipment

(1) You must discharge ammonia to storage by using either: (a) A receiver with an automatic float valve; or (b) A high pressure liquid drain trap of suitable capacity. (2) You must make sure receivers are: (a) Designed for at least 250 psig; and (b) Equipped with all of the following: (i) Necessary connections; (ii) Safety relief valves; (iii) Gauging devices. (3) You must cover insulated containers and pipelines with material that meets all of the following: (a) Thick enough for the temperatures it will be exposed to; (b) Supported; (c) Weather and fire resistant.