EEMUA has a standard that covers DBB valves. However don't know if many people use it in their specification. It is usually specified as Manufacturer standard.
Sajit
From: PipingDesign@yahoogroups.com [mailto:PipingDesign@yahoogroups.com] On
Behalf Of Alok Dubey
Sent: Wednesday, December 13, 2006 7:12 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Double Block and Bleed Isolation
Hi Utama,
If you ar etalking double block and bleed assemby than normally these are
vendor specfic items and used in instrument relate dinterface where postive
isolation is required because of hazard associated with loss of
containment.They are normally small bore items till 3'''. they are typically
two ball valve and a drain in between normally of 1/2"or 3/4". their weight
and length are major criteria i.e it should be compact and less bulky.
If you are using ball valve type of DBB then probably best guidance code
will BS 5351 for valve design.
Hope this helps.
Cheers!
Dear Fellows ;
Any idea what Int'l Code or Regulation that covers requirement of double block and bleed isolation for equipment maintenance ? They preferably applicable Internationaly such API, ISO, OSHA, etc. But UKOOA,BS, EN, NORSOK also considerable.
Appreciate if you can return to me a.s.a.p.
Best Regards,
Satria Utama Relianto
Mechanical Engineer
Integrity Management
Engineering Support
BP Indonesia Business Unit
< email : satriau@bp.com <mailto:satriau%40bp.com> >
Telp. + 62 ( 21 ) 78548451
Fax. + 62 ( 21 ) 78549062
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Received on Tue Dec 19 12:03:00 2006
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