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TITLE 8 UNFIRED PRESSURE VESSEL SAFF'7 ORDERS § 54.3 (Regiater M No. 3-1499) ..4' (p• 58M2.5) • (n) A receiver shall be provided with a liquid level control to discharge the r liquid ammonia to storage. The receiver shall be designed for at least 250 p.s.i. - and be equipped with the necessary connections, safety valves, and gaging device. (o) Refrigerated.containers and pipelines which are insulated shall be cov- ered with a material of suitable quality and thickness for the temperatures encountered. Insulation shall be suitably supported and protected against the weather. Weatherproofing shall be of a type which will not support flame propagation. NOTE: Authority cited: Section 142.3, Labor Code. HISTORY: 1. New section filed 3-28-75; effective thirtieth day thereafter (Register 75, No. 13). 515. Systems Utilizing Portable DOT NW, Containers. (a Cylinders shall comply with DOT specifications and shall be maintained, filled,packaged,marked,labeled,and shipped to comply with 49 CFR Chapter 1 and Marking Portable Compressed Gas Containers to Identify the Material Contained, ANSI 748.1-1954 (111970). (b) Cylinders shall be stored in an area free from ignitable debris and in such manner as to prevent external corrosion. Storage may be indoors or outdoors. (c) Cylinders filled in accordance with DOT regulations will become liquid {ull at 145 F. Cylinders shall be protected from heat sources such as radiant flame and steampipes. Heat shall not be applied directly to cylinders to raise the ppressure. (d) Cylinders shall be stored in such manner as to protect them from moving vehicles or external damage. (e) Any cylinder which is designed to have a valve protection cap shall have the cap securely in place when & cylinder is not in service. NOTE: Authority cited: Section 1423, Labor Code. HISTORY: 1. New section filed 3-2&75; effective thirtieth day thereafter (Register 75, No. 13). Article 7. Compressed and Liquefied Natural Gas System ' The provisions of Article 7 apply to the storage, dispensing and use of natural gas as a motor fuel except in vehicles that are licensed to travel on highways, for which the standards of the California Highway Patrol apply. 523. Design and Construction of Natural Gas Tanks. (a) General. All new natural gas tanks shall be constructed,inspected, and stamped in compliance with the Code, unless the design, material, and con- struction of the tank are accepted by the Division as equivalent to code. (b) Compressed Natural Gas. In addition to the stamping required by the Code, the stamping on all new CNG tanks shall include the following: (1) Volumetric capacity in standard cubic feet of natural gas when filled to the limits provided by these regulations. (2) The words "For CNG". (3) The head and shell thicknesses. • For Appendix A. refer to end of Subchapter 1.