Dear All,

Could anyone please answer this question?

Which standard or basis to follow for nozzle allowable loading of a sour gas(Catagory-M fluid)service blower?....if it is NEMA-SM-23?then why?

Restrictions:
1)Use of bellows restricted by project specifications.

2)Vendor allowable are 75 kg Force and 75 Kg-m Moment by using bellows.

3)The blower inlet and outlet nozzle size is 20 Inches and line size is 30 Inches just beyond reducers on both nozzles.

4)Nozzle loading exceeding vendor allowable by about 6 times and vendor is giving tough time in resolving this issue.

5)This is not HVAC type of duct.Its a carbon steel piping designed with ASME B31.3.

Any advise on this topic will be highly appreciated.


Regards

Aslam