Double Block and Bleed plugs are ideal in isolating certain areas of pipe for fabrication or isolated testing.
Buckhorn offers this service as a means to effectively isolate areas or pipe and monitor and/or place a nitrogen blanket isolation potentially explosive vapors during hot work. The DBB allows water to be introduced between seals and perform a high pressure hydrostatic test on the single well without testing the entire line.
Gulf–Island– CB&I Ethylene Cracker Project
Current performing GripTight TM Isolation Test Plugs to perform hydrostatic and pneumatic tests from 1/2" to 24" on SQE and Heater Units.
Danos – Williams Harkham Tx Project
Performed a DDB isolation with nitrogen purge and cold cut on a 24" pipeline, performed hydrostatic test on the welds, installed gaskets and insulation kits, torqued bolts to Williams specification.
Dean Equipment – Loop, LLC Fourchon, LA Project
Assisted LOOP with isolation pigs and cold cut on a 4" diesel line for the main offshore pump supply line during a 24 hour shutdown. Installed gaskets and spool piece, torqued to Loop specifications.