Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Source of Ignition
Definition(s)
Source of Ignition
Any flame, arc, spark, or heat capable of igniting flammable liquids, gases or vapors. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsSlips
Definition(s)
Slips
The wedge-shaped pieces of metal with gripping elements used to prevent pipe from slipping down the well bore. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsSecured
Definition(s)
Secured
The device or object referred to is so anchored that it will not become accidentally detached, displaced or removed under normal use or foreseen circumstances. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsSamson Post
Definition(s)
Samson Post
The main upright post or column that supports the walking beam. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsRunaway
Definition(s)
Runaway
A condition affecting diesel engines, where the engine overspeeds out of control, as a result of the introduction of airborne flammable gas or vapor via the air intake causing the engine to accelerate to progressively higher and higher revolutions per minute beyond the normal operating range to a point where the engine becomes damaged due to mechanical failure. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsRotary Hose (Kelly Hose)
Definition(s)
Rotary Hose (Kelly Hose)
Length or section of hose between the swivel and the top of the standpipe. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsRod-wheel Wrench
Definition(s)
Rod-wheel Wrench
"Reservoir" means the same as "pool" in AS 31.05.170. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsRepair (Pressure Vessel)
Definition(s)
Repair (Pressure Vessel)
A repair is any work necessary to restore a pressure vessel to a safe operating condition, provided there is no deviation from the original design. Examples of repair include:- Weld repair or replacement of pressure retaining parts or attachments that have failed in a weld or in the base material;
- Addition of welded attachments to pressure parts;
- Replacement of pressure retaining parts identical or equivalent to those existing on the pressure vessel and described in the original ASME Manufacturer's Data Report;
- Replacement or addition of a nozzle where reinforcement is not required to be considered by the code under which the vessel was constructed;
- The addition of a nozzle where reinforcement is a consideration provided the nozzle is identical or equivalent to the one in the original design and located in a similar part of the vessel;
- Repairs of base material by weld overlay;
- Repair or replacement of a pressure part with an ASME Code accepted material that has a nominal chemical composition and strength equivalent to the original material and is suitable for the intended service.
Remote Control
Definition(s)
Remote Control
Line or vessel control achieved at a remote control center using a SCADA system. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsRemote Control
A wired or wireless equipment control device that operates the diesel engine's air intake shut-off valve from a distance. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. RegulationsRathole
Definition(s)
Rathole
A hole in the rig floor lined with a casing that projects above the floor into which the kelly and swivel are placed when hoisting operations are in progress.1Source(s)
1. Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations