- (a) Aboveground product piping must be metal and rated for the system working pressure or at least 125 psi (860 kPa), whichever is greater.
- (b) Flanged connections or approved couplings must be provided to avoid the need for cutting and welding where components are serviced or replaced. Gaskets in flanged connections must be of a material and design that resist fire exposure for a time comparable to the flange and bolts.
- (c) Piping must be adequately supported.
Added at 17 Ok Reg 2875, eff 7-15-00
Amended at 21 Ok Reg 2079, eff 7-1-04