Find the most up-to-date version of BSI - BS 6364 at Engineering360. A standard formatted document that clearly defines. BS 6364 ASME B16.34 ANSI FCI 70-2. PRECISION I RELIABILITY I PERFORMANCE.

In BS 6364 standard (Issue 3, September 1998), clause A.3.1.2 it is stated: 'Make an initial proving test at the maximum seat test pressure (.) at ambient temperature using helium gas to ensure that the valve is in a suitable condition for the test to proceed'. This shall repeated at cryogenic temperature [clause A.3.1.4(b)]. How do you understand this? What is the 'suitable condition (.) to proceed'? Does it refer to the valve seat leakage, to the shell tightness or both?

And what about external tightness of the 'system' (test tubing, connections, pressure gauges, etc.)? Knowing the actual meaning of this requirement is quite important, as it is present in many Cuystomers' and Project Specifications about Cryogenic Tests of Valves (such as Bechtel Engineering documents.). Thanks to all, 'NGL RE: BS 6364: 'initial system proving' for Cryo-Testing. Hello Anegri, We have been at odds with Bechtel about the exact same statement.

Software Giorgio Moroder Midi Files here. Bechtel has argued that the initial proving test is a seat test and not a shell test. We had argued that it was a system test to prove the valve and the additional piping that is connected to the valve, prior to actually submerging in cold Nitrogen. No such Luck.

Bechtel insisted that it is a high pressure seat test and thus we have changed our test procedure to reflect that. We have even gone to BS to get clarification and we have not gotten any. Best regards. Scalleke RE: BS 6364: 'initial system proving' for Cryo-Testing (Mechanical). Scalleke, many thanks for your valued advice, as usual!

Reading BS 6364 again, we noticed that in the above mentioned paragraph, reference is made to clause A.3.4(d) which deals with test pressure values and increments. Two things can be noticed: 1) reference to a subsequent paragraph, instead of a previous one, is quite unusual and not linear by the logical point of view; 2) if you admit there can be a typing error, the reference may be also to clause A.3.2.4(d) as well. This means insulating the system from the flowmeter, pressurizing up to maximum test value for 15 min and no visible leakage (whatever the hell this means.!) from valve gland and body/bonnet joint. This makes much more sense than a seat leakage test at maximum pressure before the 'actual' cryogenic test with pressure steps.

Concreto Armado Eu Te Amo Pdf. We are therefore going to submit to Bechtel a test procedure revised as per the interpretation of above point 2): I'll let you know the comments that will come back. I also was wondering about asking the question to BSI, too. How long ago did you send your inquiry? Best regards, 'NGL RE: BS 6364: 'initial system proving' for Cryo-Testing.

It is interesting to read both of your comments about this issue and most interesting to read your comments on how Bechtel has responded to this issue. I work for Bechtel Houston and I am the person mostly responsible for cryogenic testing of valves issues. I have not been approached by anyone requesting my opinion on this matter so I am surprised as you sound to be at the answers you have received. As I indicated in a previous reply, the system proving test is to 'prove' the system before cooling starts. Ths system is clearly defined in BS6364.