Piping Engineer Question
Piping Engineer Question
(OP)
Hi there!
In P&ID somewhere along showing Off-spec, This is process specific, i am not assigned in this project so inter disciplines questioning is impossible. Could you please explain to me "off-spec".
Regarding on P&ID matter, somewhere showing NNF, its put under along the line same as slope symbolized, Could please explain what does "NNF" mean?
Kindest regards
tranvietnga1905
In P&ID somewhere along showing Off-spec, This is process specific, i am not assigned in this project so inter disciplines questioning is impossible. Could you please explain to me "off-spec".
Regarding on P&ID matter, somewhere showing NNF, its put under along the line same as slope symbolized, Could please explain what does "NNF" mean?
Kindest regards
tranvietnga1905





RE: Piping Engineer Question
Can't help with NNF - sorry.
RE: Piping Engineer Question
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
RE: Piping Engineer Question
RE: Piping Engineer Question
Regards
RE: Piping Engineer Question
Wouldn't it be a bit odd to either deliberately design something that contains an off-spec part = specify it as off-spec on the project P&ID, or, in case of an as-built P&ID, find out that a certain part is off-spec and, rather than replacing it immediately, mention that on the as-built P&ID?
Instead I would tend to think that off-spec indicates a piece of pipe that contains off-spec product, a rundown to slop or feed tankage.
RE: Piping Engineer Question