Storage tank with concrete floor
Storage tank with concrete floor
(OP)
I have a firewater tank complying with NFPA code that requires an inspection every 3 years. It also requires an internal inspection complying with API 653. 3 years ago, it was inspected and the floor was shot. At that time, a concrete floor was poured in the tank and put back in service. Our new inspector says that since it doesn't have a metal floor, it does not comply with API code and thus won't pass NFPA inspection. I wanted to get your thoughts on the validity of this claim
If it needs a new floor, it will be difficult to install as it is a very old riveted tank. Second part of my question is: what is the best way to install a new floor on a riveted tank, where the tank wall plates overlap?
If it needs a new floor, it will be difficult to install as it is a very old riveted tank. Second part of my question is: what is the best way to install a new floor on a riveted tank, where the tank wall plates overlap?





RE: Storage tank with concrete floor
Then you only need to install an internal rubber or plastic lining, attached to the junction of the shell and roof. You need to prevent condensation penetrating behind the lining, between the shell and lining. You might also need to assess the concrete surface for smoothness or fill in a layer of fine compacted sand. You might need to install new nozzles cut in the shell, to replace the welded ones with bolted nozzles.
I assume you can drain the tank and provide a good internal paint for extended service life, if not already provided in form of powder coated or painted bolted sections.
Cheers,
gr2vessels
RE: Storage tank with concrete floor
RE: Storage tank with concrete floor
RE: Storage tank with concrete floor