29 mb when doing tightmess test

[Soggy_weetabix]

Well, I find this odd.

I have never had a govenor lock out at 25 mbar, as I have had transco out numerous times to failed governors throwing >30 mbars working pressure.

Thats not lock out is it.

Governors will take huge standing pressure whick is what youve measured because you have not carried out a proper tightness test.

When I mean huge, only up to 75 mbar.

It does happen.

David

 

[scatmanjohn]

Do you mean "Lock up"

 

[namsag]

If a meter governor is throwing out 30mbar it would not be able to lock out at twenty five mbar .They lock out just above what they are usually set at which is 22mbar . That is what the gas board have traditionally set them at . And you will usually not know they have locked up.Other than if a leak showed up later on the inlet..

It`s a pretty pathetic rule that transco have to come out to adjust them but then again if people can`t get the basics of a tightness test right it is probably understandable

 

[Bamber gaspipe]

Hi again guys,

my let by test and everything was fine then went on to do my tightness test.



I slowly tweaked the pressure up and i had 29 mb reading. Tightness test was successful


Grill.

No,your standing pressure test was at 30mb which is perfectly acceptable