NFPA 69

[macki]

Hi Everyone,
I am a new user to the forum. I am trying to find out if NFPA 69 requires Flame arresters in a tank farm with interconnected piping and manifolds,isolating each tank, we have flame arresters at the flare/VCU units and lots of tanks have been hard piped to transport the vapor to the Vapor combustion unit. Does anyone have experience with this

 

[stookeyfpe]

Under your condition flame arrestors are not required by NFPA 30.

 

[macki]

thank you but I am referring to NFPA 69 (Explosion prevention).

 

[fpst]

I don't know the answer but you can read NFPA 69 for free

http://www.nfpa.org/onlinepreview/online_preview_agreement.asp?id=6908

in case you didn't know

 

[stookeyfpe]

Your mixing two standards together. NFPA 30 takes precedence on storage tanks while NFPA 69 relates to deflagration protection.