Subchapter 7. General Industry Safety Orders
Group 20. Flammable Liquids, Gases and Vapors
Article 145. Tank Storage

§5596. Tank Openings Other Than Vents for Aboveground Tanks.

(a) Connections for all tank openings shall be vapor-tight and liquid-tight.

(b) Openings for gaging on tanks storing Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100^oF (37.8^oC), shall be provided with a vaportight cap or cover. Such covers shall be closed when not gaging.

(c) For Category 2 flammable liquids and Category 3 flammable liquids with a flashpoint below 100^oF (37.8^oC), other than crude oils, gasolines and asphalts, the fill pipe shall be so designed and installed as to minimize the possibility of generating static electricity. A fill pipe entering the top of a tank shall terminate within six inches of the bottom of the tank and shall be installed to avoid excessive vibration.

(d) Filling and emptying connections for Category 1, 2, 3 or 4 flammable liquids which are made and broken shall be located outside of buildings at a location free from any source of ignition and not less than five feet away from any building opening. Such connections for any liquid shall be closed and liquid-tight when not in use and shall be properly identified.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

HISTORY

1. Repealer of subsections (b) and (c) and consecutive relettering of subsections (d)-(f) filed 9-18-80; effective thirtieth day thereafter (Register 80, No. 38).

2. Amendment of subsections (b)-(d) filed 5-5-2014; operative 5-6-2014 pursuant to Government Code section 11343.4(b)(3) (Register 2014, No. 19).