(a) Requirements: - (i) Traveling blocks shall be equipped with securely attached sheave guards.
- (ii) Any slip hook used for lifting shall be equipped with a safety latch.
- (iii) Every traveling block, hook, elevator, and elevator link or traveling equipment shall be reasonably free of projecting bolts, pins and parts.
- (iv) A blunt, smooth-edged, anti-rope fouling device shall be installed on all manually operated rope catheads.
- (v) The key seat and projecting key on a cathead shall be covered with a smooth thimble or plate.
- (vi) The operator of a cathead shall keep his operating area clear at all times. That portion of the catline not being used shall be kept coiled or spooled.
- (vii) When the cathead is unattended, no rope or line shall be left wrapped on or in contact with the cathead.
- (viii) A qualified employee shall be at the controls while a cathead is in use. He shall stop the rotation of the cathead immediately in event of an emergency.
- (ix) No splice shall be allowed to come into contact with the friction surface of the cathead.
- (x) Each corner of a crown block shall be securely bolted or welded to the mast or derrick.
- (xi) When bumper blocks are attached to the underside of the crown beams, a safety cable or strap shall be secured along their full length.
- (xii) Each finger of a finger board shall be bolted or welded to its support beam.
- (xiii) Any counterweight above the derrick floor, when not fully encased or running in permanent guides, shall be securely anchored to the derrick by a safety chain or wire rope safety line.
- (xiv) Wire rope used to connect a tong to the counter weight shall be of a sufficient strength.
- (xv) Every drilling rig shall be equipped with a reliable weight indicator.
- (xvi) Any weight indicator hung above the floor shall be secured to the derrick by means of a wire rope, safety cable or chain.
- (xvii) Every test plug used above the derrick floor shall be attached to the elevator links by safety cable or chain.
- (xviii) The operator shall not leave the brake without tying the brake down or securing it with an adequate counterbalance unless the drawworks are equipped with an automatic feed control. (See exception to this rule at Chapter 5, Section l.(a) (vii) (C))
- (xix) The operator shall not engage the rotary clutch until the rotary table is clear of personnel and material.
- (xx) The operator shall not leave the controls while the hoisting drum is in motion, except when drilling. (See exception to this rule at Chapter 5, Section l.(a) (vii) (C))
- (xxi) Each rotary tong shall be securely attached to the derrick or a back-up post and shall have a minimum breaking strength at least equal to the breaking strength of the cable.
- (xxii) Any wire rope connections used to attach safety cables to the derrick or back-up post shall have a minimum breaking strength at least equal to the breaking strength of the cable.
- (xxiii) If lubrication fittings are not accessible with guards in place, machinery shall be stopped for oiling and greasing.
- (xxiv) The drawworks shall not be operated without all guards in position and properly maintained.
- (xxv) All air compressors shall have at least one (1) air pressure regulator to control proper air flow.
- (xxvi) The safety relief valve (safety pop-off) on the main air tank shall be checked periodically and kept in proper working order.
- (xxvii) All valves and pressure control devices shall be kept in proper working order.
- (A) There shall be no valve in the discharge opening of a safety pressure relief device or in the discharge pipe connected thereto.
- (B) The piping connected to the pressure side and discharge side of a safety relief device shall not be smaller than the normal pipe size openings of the said device.
- (C) The piping on the discharge side of the safety relief device shall be securely tied down.
- (D) The piping from the discharge side of the safety relief device shall be sloped in order to drain liquids.
- (xxviii) Hydraulic pressure lines shall not be subjected to pressures exceeding those recommended by the manufacturer.
- (xxix) The brakes, linkage and brake flanges of the drawworks shall be checked each day.
- (xxx) A mud box or other effective means shall be provided on all rigs to convey any fluids away from the derrick floor, while pulling drill stem tests or breaking wet joints.
- (xxxi) Hoses, lines or chains shall not be permitted to come into contact with the rotary table while it is in motion.
- (xxxii) When visibility on the rig floor is obscured, no worker shall be required or permitted to work on the rig floor while the rotary table is in motion.
- (xxxiv) A blunt smooth-edged divider to separate the first wrap of a line on a cathead shall be installed on all manually-operated rope catheads and the clearance between the device and the friction surface of the cathead shall not exceed one-fourth (1/4) inch.
- (xxxv) The friction surface and flanges of a cathead on which a rope is manually operated shall be smooth and the diameter of the cathead between the flanges shall be uniform throughout its length with an allowable tolerance of three-eighths (3/8) inch.
- (xxxvi) Hydraulic tong control mechanism.
- (A) The control device on power tongs shall be designed or guarded to prevent accidental activation.
- (xxxvii) Pull-back post. A kelly pull-back post with attached snatch block to a sheave, roller or similar device (onto or through which is run the pull-back rope), shall be provided for pulling the kelly back to the rat hole. The pull-back post shall be secured either to the derrick foundation side sills or floor sills, and shall not be attached to or in contact with the derrick legs, girts, or braces.
- (xxxviii) Whenever drill pipe, drill collars or tubing are racked in the derrick, provisions shall be made for the complete drainage of any fluids or gases in the stands.
FIGURE 6-1
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