dear hafiz,
As per B31.4 hydrotest duration is 4 hr for piping system operated more than hoops stress of 20% or more of yield strength and LEAK TEST is carried out for 1Hr piping operated at hoops stress of 20% or less of yield strength.
Pressure and temparature recorder can be use as specified by client spec or have hard evidence of hydro test pressure and temperature variation.
moreover performing hydrotesting for long hr 4hr to 24hr need recorder to prove that pressure drops or increase is function of temperature at last to get client approval.
hope this clear!!
as per which code you have done hydro test for 1Hr.
On Thursday, January 5, 2012 11:49:55 AM UTC, mohd wrote:
Dear experts,
Can any one give good and efficient method of underground(buried) pipe
line leak testing method during hydrotest?
Pipe: API 5L Gr 52 MS PSL-2.
Length : Two section 50km+50km (2500 joints approx each section).
Test pressure : 73.25 bar.
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
No comments:
Post a Comment