NDT requirements for water piping systems
NDT requirements for water piping systems
(OP)
Normally it's usual to have 100% RX for underground piping systems containing oil products, 10% RX and 10% PT for aboveground piping systems. But what about firefighting, water and waste water piping systems? Any NDT requirement besides the normal visual inspection?
Also normally I see ITP's for this piping systems with 5 to 10% RX and PT. But there is any requirement on the codes? Mainly B31.3 or even NFPA.
Also normally I see ITP's for this piping systems with 5 to 10% RX and PT. But there is any requirement on the codes? Mainly B31.3 or even NFPA.





RE: NDT requirements for water piping systems
Public water is generally installed in accordance with AWWA. Public sewers is the ASCE Manual of Practice 60 and the Ten States Standards. The National Fire Protection Association codes shall apply for building piping used for fire protection service.
RE: NDT requirements for water piping systems
If you have seen 5% or 10% then it is probably Normal Fluid Service.
Water and Wastewater is usually Category D which does not require NDT - only hydrotest.
Firewater can be anything from 5% to 100% but that is an Owners requirement - not a code requirement.
Regards,
DD
RE: NDT requirements for water piping systems
Of course field hydrostatic testing is also intended to be a "non-destructive test" of a fully, well manufactured and installed piping system or segment with most all components in place for the Owner (unless there is damage or defect in the piping or installation same is perhaps generally intended to weed out!)
RE: NDT requirements for water piping systems
The design code is ASME B31.3.
RE: NDT requirements for water piping systems
Category M is 20% but not relevant.