California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 1 - Unfired Pressure Vessel Safety Orders
Article 6 - Anhydrous Ammonia
Section 505 - Installation of Mobile Storage Tanks
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) Mobile storage tanks shall meet the requirements of Section 504 except that:
(b) When containing NH3 liquid, mobile storage tanks shall be located in accordance with Section 501 (c).
(c) Mobile storage tanks shall be maintained substantially level and be securely blocked against accidental movement and shall be adequately supported independently of the wheels when containing NH3 liquid.
(d) Only flexible connections shall be made to mobile storage tanks. No permanent piping to other installations is permitted. The loading and unloading connections shall be securely fastened to the vehicle frame or to the tank supports.
(e) All liquid shall be removed from mobile storage tanks before being moved to a new location.
(f) Unless surrounded by a rugged steel fence or equivalent, all liquid and vapor outlets shall be kept effectively locked when unattended.
(g) Transportation tanks shall not be used as mobile storage tanks without written permission from the Division, unless they are in full compliance with both Sections 504 and 505.
1. Amendment of subsection (b) filed 12-8-72 as procedural and organizational; effective upon filing (Register 72, No. 50).