1) предохранитель
2) нефт. превентор
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- annular blowout preventer
- blind-ram blowout preventer
- blowout preventer
- circle rotating preventer
- double-gate blowout preventer
- double blowout preventer
- hydril blowout preventer
- inside blowout preventer
- kelly preventer
- pipe-ram blowout preventer
- ram-type blowout preventer
- ram blowout preventer
- sea-bottom blowout preventer
- shear ram blowout preventer
- single-gate blowout preventer
- single blowout preventer
- spherical blowout preventer
- universal blowout preventer
- water-waste preventer