Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Fire Testing of valves
- Thread starter nilotpalc
- Start date
Nilotpalc,
as far as I remember, there is little difference between the fire test standards you mention: in both cases (and in all other similar standards) the main point is to simulate a 30 min fire as it may happen in the field, while the valve has to remain tight before, during and after the fire itself. The temperature and test set-up requirements are the same, there are only some slight differences in the test pressures...
So I'd suggest to look into the thing and read, if possible, the relevant test reports, in order to detect any possible discrepacy.
Hope this helps, 'NGL
as far as I remember, there is little difference between the fire test standards you mention: in both cases (and in all other similar standards) the main point is to simulate a 30 min fire as it may happen in the field, while the valve has to remain tight before, during and after the fire itself. The temperature and test set-up requirements are the same, there are only some slight differences in the test pressures...
So I'd suggest to look into the thing and read, if possible, the relevant test reports, in order to detect any possible discrepacy.
Hope this helps, 'NGL
I add the result of a quick search within this site, i.e. a list of threads you may find interesting to read, just for information about the issue in object:
- Thread408-83854 ;
- Thread408-50135 ;
- Thread408-80209 ;
- Thread378-11106 ;
- Thread292-70961 .
Bye, 'NGL
- Thread408-83854 ;
- Thread408-50135 ;
- Thread408-80209 ;
- Thread378-11106 ;
- Thread292-70961 .
Bye, 'NGL
yarmouthmatt
Mechanical
There is a significant difference in test pressures for Class 600 and below. For API 607, the test pressure is 30 psig and for 6FA, it is 75% of the CWP. The lower test pressure of 607 makes it more difficult for some ball valves to seal for through leakage, but easier for the stem packing and body seals.
Only comment I would make is have you checked that either fire tests is applicable to the fire hazard likely in the location where the valve is situated.
On offshore oil or gas installations and petrochemical plants most fire hazards are either hydrocarbon or jet fire.
These fires are much hotter (over 2000°F) and more erosive than the fires used to test to these API standards and the valves may require to have additional fire protection covers to work in a real fire situation.
On offshore oil or gas installations and petrochemical plants most fire hazards are either hydrocarbon or jet fire.
These fires are much hotter (over 2000°F) and more erosive than the fires used to test to these API standards and the valves may require to have additional fire protection covers to work in a real fire situation.
- Status