California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 14 - Petroleum Safety Orders-Drilling and Production › Article 2 - Definitions › Section 6505 - Definitions

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The following definitions shall apply in the application
						of these Orders.
Air Intake Shut-off Valve. A device located between the
						engine air filter and the intake manifold, designed to shut off the diesel
						engine's combustion air in the event engine runaway occurs.
Alteration (Pressure Vessel). An alteration is any change
						to the item described on the manufacturer's data report which affects the
						pressure containing capacity or the pressure vessel. Nonphysical (re-rating)
						such as an increase in the maximum allowable working pressure (internal or
						external) or design temperature or the addition at loading not considered in
						the original design, shall be considered an alteration. A reduction in the
						(minimum) design metal temperature such that additional mechanical tests are
						required shall also be considered an alteration.
Anchor, Deadline. A means of holding the deadline to the
						derrick or substructure.
Approved. As defined in the General Industry Safety
						Orders. Section
						3206. A.N.S.I. American National
						Standards Institute.
A.P.I. American Petroleum Institute.
A.S.M.E. American Society of Mechanical Engineers.
A.S.T.M. American Society for Testing Materials.
Authorized Person. A person assigned by an employer to
						perform or supervise the performance of a specific type duty or duties at the
						work site.
Auto Ignition Temperature. The minimum temperature to
						which a flammable or gas mixture in air must be heated in order to initiate
						self-sustained combustion.
Back-up Line. A length of wire rope used for holding the
						leverage arm or handle of a tong to prevent tong rotation.
Back-up Post. A post, column or stanchion to which a
						back-up line is secured.
Barrel. A liquid measure of 42 U. S. gallons (158.9
						liters).
Bail. A cylindrical steel bar, similar to the handle or
						band of a bucket, only much larger, that supports the swivel and connects it to
						the hook. The links that attach the elevators to the hook may also be referred
						to as bails.
Bailer. A long cylindrical container, fitted with a valve
						at its lower end, used to remove water, sand, mud, or oil from a well.
Blind. A device such as metal plates inserted in flanged
						joints, blind flanges, and caps or plugs installed on the ends of pipe lines,
						used to prevent liquids, gases, or vapors from passing through a pipe line or
						nozzle. Valves are not blinds.
Blowout. An uncontrolled discharge of gas, liquid, or
						mixture of gases and liquids from a well to the atmosphere.
Blowout Preventer. A device attached to a casing head
						that allows the well to be sealed to confine the well fluid in the well
						bore.
Breaking Line. (Break-out Line, Make-up Line, Jerk Line,
						Snap Line). A wire rope or fiber rope or chain, one end of which is secured to
						a tong handle and the other end attached to or wound on a mechanical device to
						impart a pulling power on the tong leverage arm or handle.
Cathead. Unless referred to as "automatic" cathead, means
						a spool shaped metal mechanical device mounted on the end of a shaft on which a
						rope is wrapped. The rotating cathead imparts a pulling power to the rope that
						is wrapped on it.
Cathead, Automatic. A clutch operated metal mechanical
						device consisting of a wheel having a flanged or flat surfaced rim or a spool
						shaped drum mounted on a shaft to which the end of a wire or fiber rope or
						chain is attached. The rotating cathead imparts a pulling power to the line
						attached to it.
Catline. A rope, usually reeved on a crown block sheave
						in a derrick or mast, for the primary purpose of lifting and transferring
						materials from one place to another about the derrick or mast floor. A rotating
						cathead imparts the pulling power to the catline that is wrapped on it.
Catwalk (Derrick Walk or Mast Walk). A walkway extending
						from the derrick and/or mast to a point beyond the outer end of the drill pipe
						and casing storage rack at a well, the purpose of which is to facilitate the
						handling of such pipe between the rack and the derrick and/or mast.
Cellar. An excavation around the well head to provide
						space for equipment at the top of the well bore.
Circulating Hose (Bumper Hose). A hose for high pressure
						circulation between the high pressure side of the mud pump and the bottom of
						the standpipe.
Combustible Liquid. Any material which has a fluidity
						greater than that of 300 penetration asphalt when tested in accordance with
						American Society For Testing and Materials. Designation D5-86, Standard Test
						Method For Penetration of Bituminous Materials, pages 1-5, which is hereby
						incorporated by reference. Combustible liquids shall be subdivided as
						follows:
Class II liquids shall include those having flash points
						at or above 100°F (37.8°C) and below 140°F (60°C).
Class IIIA liquids include those having flash points at
						or above 140°F (60°C) and below 200°F (93.4°C).
Class IIIB liquids shall include those having flash
						points at or above 200°F (93.4°C).
Confined Space. As defined in General Industry Safety
						Orders, Section
						5156.
Contractor's Standby. A half hitch in a wire line secured
						by a wire line clamp(s).
Corrosive. A substance that causes visible destruction
						of, or irreversible alterations in, living tissue by chemical action at the
						site of contact.
Crown Block Assembly. An assembly of mechanical parts
						mounted on top of a derrick tower or mast, consisting of a framework to which a
						number of sheaves are fastened over which hoisting lines are reeved.
DBBS. Double block and bleeder system.
Dead Line. The line (which does not travel) from the
						crown block sheave to the anchor.
Dead Line Stabilizer. A device attached to the mast or
						derrick for restricting lateral movement of the dead line.
Derrick Crown Platform (Runaround, Water Table). A
						continuous platform that provides access to the crown block assembly and
						warning lights.
Derrick Ladder or Mast Ladder. Any fixed ladder providing
						access to any location in or on the derrick or mast.
Derrick. The tower component of a drilling or well
						servicing rig that supports the crown block assembly, traveling block and
						hoisting lines. Derricks and masts may be stationary structures normally
						requiring dismantling and disassembly when moved from location to location, or
						may be portable with the capability of being laid down and raised to and from
						ground level fully assembled.
Division. The Division of Occupational Safety and
						Health.
Drawworks. Any assembly of power transmission equipment
						and machine parts used in the rotary method of drilling or well servicing, for
						hoisting and lowering the drill pipe, casing, tubing and drilling tools used in
						a well.
Drilling. Includes redrilling and means digging a hole in
						earth formation with a power-driven drill bit for the purpose of exploring for
						or developing of oil or gas. Drilling includes those operations that are
						concerned with the completion of a well.
Drilling (Hoisting) Line. A wire line used in the main
						rig hoisting system.
Effective. Capable of performing with safety the
						particular function specified in the order.
Elevator. A metal mechanical device used in connection
						with and suspended from a traveling block or hoisting line, to hold pipe or
						sucker rods in suspension when being hoisted or lowered in a well.
Enclosed. As applied to mechanical guarding means that
						the moving parts are so guarded that physical contact by parts of the body is
						precluded as long as the guard remains in place. This does not prohibit the use
						of hinged, sliding, or otherwise removable doors or sections to permit
						inspection or lubrication.
Finger. A bar or structural steel shape which serves as a
						restraining support for pipe or other equipment racked in a derrick or
						mast.
Finger Board. A support for the finger. It may be a
						timber, metal bar, structural steel shape, or inside derrick platform secured
						in the derrick or mast.
Finger Brace. A bar or structural steel shape secured to
						the finger board or to the derrick or mast members to resist horizontal
						movement of the finger.
Flammable Liquid. A liquid having a flash point below
						100°F., (37.8°C) and having a vapor pressure not exceeding 40 lb. per
						sq. in. (absolute) (176 kPa) at 100°F (37.8°C) and shall be known as
						Class I liquid. Class I Liquids shall be subdivided as follows:
Class IA shall include those having flash points below
						73°F., (22.8°C.) and having a boiling point below 100°F.,
						(37.8°C.).
Class IB shall include those having flash points below
						73°F., (22.8°C.) and having a boiling point at or above 100°F.,
						(37.8°C.).
Class IC shall include those having flash points at or
						above 73°F., (22.8°C.) and below 100°F., (37.8°C.).
Flare. The stack, pit, or device, or location where waste
						or excess flammable gases and vapors are burned in the atmosphere.
Gas. A fluid, such as air, that has neither independent
						shape nor volume, but tends to expand indefinitely.
Gas Free or Free of Gas. Free from harmful or hazardous
						concentrations of vapors, fumes and gases.
Gin Pole Mast. A single or double leg type mast supported
						in working position by either guys or one or more auxiliary legs, normally used
						for supporting crown block and traveling block. This definition includes
						tripods.
Girt. A cross-brace between the legs of a mast or
						derrick.
Good Engineering Practice. The use of mathematics,
						scientific formulae, manufacturer's data and/or experience by a qualified
						person to determine the elements of safety, such as stress values, strength of
						materials, overturning moments and factors of safety, of equipment and
						component parts.
Guarded. Shielded, fenced, enclosed or otherwise
						protected to prevent injury to employees.
Hazardous Substance. One which is likely to cause injury
						by reason of being explosive, flammable, extremely flammable, poisonous,
						corrosive, oxidizing, irritant, or otherwise harmful.
High Line. A specially rigged rope used to convey pipe,
						drilling tools or other equipment from a derrick or mast to the derrick,
						catwalk or other location outside the derrick or mast.
Inside Derrick Platform. A fixed platform for workers
						inside the derrick.
Kelly. The square or other shaped steel pipe connecting
						the swivel to the drill pipe. The kelly moves through the rotary table and
						transmits torque to the drill string.
Kelly Bushing. A device fitted to the master bushing that
						transmits torque to the kelly.
Kelly Cock. A valve installed at one or both ends of the
						kelly that can be used to confine pressure inside the drill string.
Ladder Climbing Assist Device (Angel Lift). A device
						consisting of a length of wire rope reeved over a sheave, with one end attached
						to a counterweight and the other end attached to a belt that passes under a
						person's buttocks. As a person ascends or descends the mast ladder, the device
						acts as an assist by lightening the person's weight.
Ladder Offset Platform. A platform installed on the
						derrick or mast at points where the ladder is offset to provide access from one
						ladder section to an adjacent offset section.
Lanyard. A flexible line to secure a wearer of a safety
						belt or harness to a drop line, lifeline, or fixed anchorage.
Lease. Any property, irrespective of the legal title or
						possession, from which gas or oil is being produced or sought. A single lease
						may include adjacent properties under the same employer.
Loading and Unloading Platform. A platform giving access
						to the tops of tank cars, tank trucks and trailers and to overhead valves and
						pipes.
Mast. The tower component of a drilling or well servicing
						rig that supports the crown block assembly, travelling block and hoisting
						lines. Derricks and masts may be stationary structures normally requiring
						dismantling and disassembly when moved from location to location, or may be
						portable with the capability of being laid down and raised to and from ground
						level fully assembled.
Monkey Board (Tubing Board or Racking Board). The
						derrickman's working platform.
Mousehole. An opening through the rig floor, usually
						lined with pipe, into which a length of drill pipe is placed temporarily for
						later connection to the drill string.
Oil Saver. A device used in conjunction with a wire line
						in an oil or gas well to direct liquids and gases from such wells into
						desirable outlets.
Open Well Bore. A well open to the atmosphere during well
						drilling, work-over, maintenance, repair or abandonment operations.
Owner-User Inspection Agency. An owner or user of
						pressure vessels who maintains a regularly established inspection department
						whose organization and inspection procedures have been accepted by the
						Division.
Pressure Relief Device. A device for relieving pressure,
						such as a direct spring-loaded safety valve, rupture disk, or shear-pin set
						safety valve.
Pressure Vessel. A container, including cylinders, used
						for the storage or accumulation of any gas or liquid under pressure and as
						defined in the Unfired Pressure Vessel Safety Orders with the following
						exceptions:
(a) Those exceptions
					 defined in Section
					 451 of the Unfired Pressure Vessel
					 Safety Orders.
(b) Pressure vessels
					 constructed entirely of pipe and fittings conforming to and in service as
					 prescribed in the applicable ANSI code.
(c) High and low pressure gas holder covered
					 by General Order No. 94-B of the Public Utility Commission of the State of
					 California with revised Section
					 4 a, effective November 12,
					 1970.
This definition is not intended to include boilers as
						defined in the Boiler and Fired Pressure Vessel Safety Orders, and pressure
						chambers that are integral parts of such devices as pumps, motors, engines,
						clothes presses, flatwork ironers, tire molds, etc., where the
						pressure-containing part is subjected to severe mechanical stresses.
Prime Mover. An engine or motor whose main function is to
						drive or operate other mechanical equipment.
Production Facility. Typically, an area where production
						wells, stock tanks, separators, lease automatic custody transfer (LACT) units
						and other production equipment are located.
Qualified Inspector. An inspector as defined in the
						Unfired Pressure Safety Orders, and who holds a valid certificate of competency
						issued by the Division.
Qualified Person. A person designated by the employer who
						by reason of training and experience has demonstrated the ability to safely
						perform his duties and, where required, is licensed in accordance with federal,
						state, or local laws and regulations.
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.
Remote Control. A wired or wireless equipment control
						device that operates the diesel engine's air intake shut-off valve from a
						distance.
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:
1. Weld repair or replacement of pressure
					 retaining parts or attachments that have failed in a weld or in the base
					 material;
2. Addition of welded
					 attachments to pressure parts;
3.
					 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;
4.
					 Replacement or addition of a nozzle where reinforcement is not required to be
					 considered by the code under which the vessel was constructed;
5. The addition of a nozzle where
					 reinforcement is a considertaion provided the nozzle is identical or equivalent
					 to the one in the original design and located in a similar part of the
					 vessel;
6. Repairs of base material
					 by weld overlay;
7. 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.
Reservoir. A roofed excavation for the storage of
						petroleum liquids.
Rod-Wheel Wrench. A spoked, circular metal wheel which
						when secured onto the sucker/polished rod is used to manually apply torque to
						the rod string.
Rotary Hose. (Kelly Hose). Length or section of hose
						between the swivel and the top of the standpipe.
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.
Samson Post. The main upright post or column that
						supports the walking beam.
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.
Slips. The wedge-shaped pieces of metal with gripping
						elements used to prevent pipe from slipping down the well bore.
Source of Ignition. Any flame, arc, spark, or heat
						capable of igniting flammable liquids, gases or vapors.
Stabbing Board. A readily movable platform used in the
						derrick or on a mast which workmen stand on to perform work of a temporary
						nature and not normally performed from a fixed inside derrick platform or
						monkey board, or a fixed working platform on a mast.
Standpipe. A vertical pipe which joins the rotary hose to
						the circulating system.
Static Electricity. The type of electrical charge
						resulting from the separation of materials, friction or similar causes.
Stationary Internal Combustion Engine. An engine that is
						permanently attached to a fixed foundation.
Sump. A pit or excavation, for holding liquids.
Tank. A receptacle (covered or uncovered) of 60 gallons
						(227.1 liters) or greater capacity. Unless referred to in these Orders as
						"stationary," the above definition shall include such receptacle when used on
						tank cars, tank vehicles or skids.
Traveling Block. Two or more steel plates and other metal
						parts assembled into a framework within which are mounted one or more sheaves
						on which the hoisting line is reeved in connection with the sheaves on the
						crown block. The traveling block travels between the derrick or mast floor and
						the crown block.
Traveling Block Hook. A hook or equivalent device
						suspended from the traveling block and from which the elevator links, swivel
						bail or other equipment is attached.
Valve. A device for regulating or controlling the flow of
						material by means of a movable part or parts which open or close a
						passage.
Wall, Diversion. A wall made of concrete, earthwork or
						other noncombustible material, built for the purpose of protecting employees by
						diverting the flow of hazardous substances.
Wall, Retaining (Dike). A wall made of concrete,
						earthwork, or other noncombustible material, built for the purpose of
						protecting employees by confining hazardous substances.
Well Servicing. Remedial or maintenance work performed
						within the well casing on any well, other than a drilling
						well.
1.
						Amendment filed 7-20-59; effective thirtieth day thereafter (Register 59, No.
						12).
2. Amendment of section and NOTE filed 5-8-95; operative 6-7-95
						(Register 95, No. 19).
3. Amendment of definition of "Owner-User
						Inspection Agency" filed 6-26-2006; operative 7-26-2006 (Register 2006, No.
						26).
4. New definitions of "Air Intake Shut-off Valve," "Open Well
						Bore," "Prime Mover," "Remote Control" and "Runaway" and amendment of
						definition of "Pressure Vessel" filed 10-31-2012; operative 11-30-2012
						(Register 2012, No. 44).
Note: Authority cited: Section
						  142.3, Labor
						  Code. Reference: Section
						  142.3, Labor
						  Code.