355 IAC 3-8-2 Design pressure; tank construction standards

Sec. 2. (a) Tanks may be designed for any storage pressure desired as determined by economical design of the refrigerated system. (b) Tanks with a design pressure exceeding fifteen (15) psig shall be constructed in accordance with 355 IAC 3-2-2, and in addition the materials shall be selected from those listed in API Standard 620, Table 2.02, R2.2, R2.2(A), R2.2.1, or R2.3, including current amendments and latest edition of the same. (c) Tanks with a design pressure of fifteen (15) psig and less shall be constructed in accordance with the general requirements, including current amendments of the latest edition of API Standard 620, including Appendix R. (d) When austenitic steels or nonferrous materials are used, the ASME Code shall be used as a guide in selection of materials for use at the design temperature.