[MW:3149] Re: hot-oil traced line

Code starts with " when the owner considers a hydrotest leak impracticable ....." ((345.1) ASME B 31.3 -2002)

 

when design pressure is 30 psi why test @ 90 psi any specific reason ?

Code itself satisfies with testing @ 1.10 times the design pressure  (345.5.4) ASME B 31.3 -2002

 

Also the PRV is to be set at 50 psi or 10% of the test pressure , in this case 3.3 psi in this case (30X1.1X1/10)

 

Avoid  pneumatic testing  .

Regards,

Satish Kumar
Senior Engineer
Aker Solutions

On Tue, Sep 8, 2009 at 2:56 PM, daniel iordache <daniel.iordache@gmail.com> wrote:

hello Friends

 

we have in project 10-12" bitumen line .......these lines are accompanied by hot-oil traced line 1" sch 40....maximum pressure for those line are 30 psi.....due the complexity of network ....i want to test line instead of hydrostatic ...pneumatic at 90 psi ... ....there is any restriction..? Most of people said is avoid to do pneumatic test ...by code ....i did not find any ....

 

please advice

--
Daniel Iordache
Bureau Veritas - Angola
Mechanical& Welding Surveyor
Mobile Ao: +244921544583
Mobile Ro:   +40721731728
E-Mail: daniel.iordache@gmail.com
          daniel_iordache@yahoo.com

--
Regards,
Bhaskar Kale

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