API 610 (Hydrotest pressure concerns)
Api 610 11th Edition Highlights
API 610 (Hydrotest pressure concerns)
Hi,
I am currently working on OH2 type pump that is in compliance with API 610 11th Edition.
Connection sizes are as follows : Suction : 6' /300lb/RF
Discharge : 4' /300lb/RF
Material of construction selected for this application is A351 CF8M.
I have a concern in terms of hydrotest pressure.
Now,with reference to API 610 11th Edn,6.3.5b)MAWP is equivalent to 40barg at 38 degC.In this regard,Hydrotest pressure should be equal to 1.5 times MAWP,that is 60 barg at 38 degC.
But when i referred to ASME B16.5 for flange fittings,in table 2.2.2,maximum working pressure for flange rating of 300 lb at 38 deg C is 49.6 bar
Having outlined that above,my question is
- Is it feasible to perform hydrotest at a pressure ( 60 barg ) in excess of max working pressure (49.6 barg) of flange fittings at the said temperature ?
Thanks for your reply in advance.
I am currently working on OH2 type pump that is in compliance with API 610 11th Edition.
Connection sizes are as follows : Suction : 6' /300lb/RF
Discharge : 4' /300lb/RF
Material of construction selected for this application is A351 CF8M.
I have a concern in terms of hydrotest pressure.
Now,with reference to API 610 11th Edn,6.3.5b)MAWP is equivalent to 40barg at 38 degC.In this regard,Hydrotest pressure should be equal to 1.5 times MAWP,that is 60 barg at 38 degC.
But when i referred to ASME B16.5 for flange fittings,in table 2.2.2,maximum working pressure for flange rating of 300 lb at 38 deg C is 49.6 bar
Having outlined that above,my question is
- Is it feasible to perform hydrotest at a pressure ( 60 barg ) in excess of max working pressure (49.6 barg) of flange fittings at the said temperature ?
Thanks for your reply in advance.
Api 610 11th Edition Pdf Free Download
- API 610 white papers DDNNNN-XXX REV A (Oct-10) DDNNNN-XXX REV A (Aug-12) Page 1 of 4 - pump selection & curve evaluation guide API 610 11th edition offers guidelines for pump selection to assist users with selecting pumps that will run uninterrupted for a minimum of 3 years and provide many years of reliable service.
- Agenda • Changes to API 610 for 11th Edition – Released Fall/2010 • Changes to API 682 for 4th Edition – Upcoming Release Planned for 2012 • Questions/Discussion.
Api 610 11th Edition
Apr 11, 2012 Part 1 of changes in API 610 11th Edition. First part will cover all the new clauses. NEW CLAUSES: 1: (NOTE added): For sealless pumps, reference can be made to API Std 685.For heavy duty pump applications in industries other than petroleum, petrochemical and gas processing, reference can be made to ISO 9905.