Definition(s)
DBBS
Double block and bleeder system.
Source: Petroleum Safety Orders–Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations
Oil & Gas Drilling Glossary - IADCLexicon.org
Double block and bleeder system.
Source: Petroleum Safety Orders–Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations