Dear Friends

Please clarify my following doubt regarding API 610


1) Is it necessary to have both suction and discharge in single stress file to qualify nozzle by apply Annex F ?

2) How can I interpolate the allowable value for 5" nozzle as its not provided in the Table-5 ? or which equation used to find out the nozzle allowable?

3) Table 5 is covering allowable Up to 16 " nozzle only,where should I refer for above 16"nozzle allowable ?

4) IN 5.5.5 is stating that Annex F can be used if approved by the vendor ,but Annex F.1.2 is saying loads outside the ranges specified in the table 4 are also acceptable with out consulting with the vendor if conditions 'a','b',c are satisfied.these both statements are contradicting each-other which one is to be followed ?


thanx
Anu

1) No, the suction and discharge nozzle data can be collected from different files or entered by hand.
2) Interpolation sounds appropriate here.
3) 6.5.3 says teh vendor shall submit allowable loads for larger nozzles.
4) No. 6.5.5 says Annex F requires approval of the purchaser. F.1.2 says Annex F is acceptable without the vendor consultation. Purchaser vs. vendor.

thank you so much for your quick responds..

4th point is still not clear can u just elaborate it...


Thanks in advance

The engineer/designer responsible for the piping system connected to that pump must seek permission from the eventual owner of that system to utilize the Annex F limits.
The acceptance of those higher Annex F limits is implicitly accepted by the supplier of the pump.
That's how I read it.

Couple of Questions about API 610 module on Caesar- Analysis

1. In the Input Data screen there is a Base Point node number to be specified. Can this field be left blank? If not, which node number should be specified? And why a number is required.

2. Factor For Table 4 allowable :

Is it correct to say -
Specifiying 2 will take maximum advantage of Annex F , provided application Annex F is allowed by the Client.

1) The Base Point node number is optional - it is just a reference here.
2) Yes, using 2 as the table multiplier is intended for use with Annex F (where 2 times is allowed when other checks are verified) when annex F is explicitly allowed by the the purchaser of the pump. This multiplier may also be used when a vendor allows multiple of the table values.