Double Block and Bleed Isolation

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 >
Telp. + 62 ( 21 ) 78548451
Fax. + 62 ( 21 ) 78549062

[Non-text portions of this message have been removed] Received on Mon Dec 11 21:15:00 2006