Subchapter 7. General Industry Safety Orders
Group 20. Flammable Liquids, Gases and Vapors
Article 143. Processing Plants

§5555. Location.

(a) The location of each processing vessel shall be based upon its flammable or combustible liquid capacity. Processing vessels shall be located, with respect to distances to lines of adjoining property which may be built upon, in accordance with Table FL-8, except when the processing plant is designed in accordance with (b).

Table FL-8

Processing Vessels With
Emergency Relief Venting
to Permit Pressure	Stable Liquids	Unstable Liquids
Not in excess of 2.5 psig   .....	Table FL-15*	2 1/2 times
		Table FL-15*
Over 2.5 psig   .......................	1 1/2 times	4 times
	Table FL-15*	Table FL-15 *

* Double distances where protection of exposure is not provided.

(b) The distances required in (a) may be waived when the vessels are housed within a building and the exterior wall facing the line of adjoining property which may be built upon is a blank wall having a fire resistance rating of not less than four hours. When Flammable Category 1 or unstable liquids are handled, the blank wall shall have explosion resistance in accordance with good engineering practice, see Section 5556(f).

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

HISTORY

1. Amendment of section and new Note filed 5-5-2014; operative 5-6-2014 pursuant to Government Code section 11343.4(b)(3) (Register 2014, No. 19). 1. Amendment filed 7-16-76; effective thirtieth day thereafter (Register 76, No. 29).

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