WAC 296-826-30020   Refrigerated storage.  

     You must:

     • Make sure the minimum design temperature is the same as the refrigerated temperature of the tank.

     • Construct and test containers, with a design pressure exceeding 15 psig, according to the Unfired Pressure Vessel Code.

     • Select construction materials from those listed from API Standard 620, 4th Edition 2002, Recommended Rules for Design and Construction of Large, Welded Low Pressure Storage Tanks.

     • Construct tanks with a design pressure with 15 psig or less according to API Standard 620, 4th Edition, 2002.

     • Use ASME Code as a guide in the selection of austenitic steels or nonferrous materials, if used at the design temperature.



[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 06-10-067, § 296-826-30020, filed 5/2/06, effective 9/1/06.]