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vapor -- Letter of Intent: Inclusion of Modified Morrison Bros Emergency Vent Valves in the Next Amendment of Executive Order VR-402
Posted: 28 Apr 2015 15:42:18
The Air Resources Board (ARB) issued a letter on April 1, 2015 to Morrison Bros expressing ARB staff’s intent to include Morrison Bros. modified 244 series emergency vent valve in the next revision of Executive Order (EO) VR-402, Morrison Bros Phase I Enhanced Vapor Recovery (EVR) System for Aboveground Storage Tanks (AST). New Underwriters Laboratories (UL) specification 2583, Outline of Investigation for Fuel Tank Accessories, necessitated minor changes to the verbiage on the covers of the emergency vents and a height increase. UL allows manufacturers to sell existing equipment that they have in stock, but once that stock has been exhausted, Morrison Bros. is required to produce the 244 series emergency vents to the UL 2583 specification. Morrison Bros. anticipates selling out of their current stock before EO VR-402 can be amended to include the modified component. ARB staff has reviewed the modifications and determined that neither will affect the component’s functionality in relation to vapor recovery. ARB staff intends to include the modified 244 series emergency vent in the next amendment of EO VR-402 and therefore this letter may be utilized until the EO is amended. The letter can be found on ARB’s Vapor Recovery page here: http://www.arb.ca.gov/vapor/vapor.htm. California is in a drought emergency. Visit www.SaveOurH2O.org for water conservation tips.
