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 41 - Wire Rope Lines › Section 6640 - Wire Rope Lines

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 All wire ropes used for pulling purposes shall be of sufficient strength to
					 move or hold the loads. The maximum allowable working loads shall be based on a
					 minimum factor of safety of four (4) for routine operations.
EXCEPTION: A factor of safety of three (3) is allowed
						when setting casing, pulling on stuck pipe, or while engaging in similar
						infrequent operations.
(b)
					 The employer or a designated qualified person shall inspect wire rope lines at
					 reasonable intervals for wear or broken wires or a combination of these or
					 marked corrosion or other damage that may reduce the strength of the line to a
					 point where it will not safely lift or otherwise handle the load.
NOTE: "Reasonable intervals" shall be determined by the
						nature and amount of work performed by the line and its exposure to the weather
						when not in use, and other damage that may reduce the safe handling of the
						loads.
(c) Spliced hoisting
					 lines shall not be used except those lines that run into a well. This does not
					 prohibit forming an eye in the end of a line by the splice method or by the use
					 of wire rope clips or clamps.
"Contractor's standby" (half hitch and clips) shall not
						be used in any wire rope.
(d) When a hoisting line is in use,
					 precautions shall be taken to prevent the fast (lead) line and that portion of
					 the dead line between the crown block and the dead line anchor from contacting
					 any structural members of the derrick or mast or stationary equipment therein,
					 line spoolers and line stabilizers excepted.
(e) The hoisting line shall be securely
					 fastened to the hoist drum and there shall be enough line on the drum to permit
					 the traveling block to be laid horizontally on the derrick or mast floor.
EXCEPTION: This does not apply when a grooved hoist drum
						is used and more than a five (5) part fall is reeved, but in no case shall
						there be less than seven (7) anchor coils on the drum when the traveling block
						is at its lowest point of travel during hoisting operations.
(f) The dead line anchor for any wire rope
					 shall be designed, constructed, installed and maintained to conform to good
					 engineering practices.
Provisions shall be made to prevent the deadline from
						becoming disengaged from the anchor.
(g) When a wire rope socket is used on any
					 wire rope, it shall be attached to the line in a manner specified by the
					 manufacturer of the rope. This does not apply to lines that run into a
					 well.
(h) Eye splices shall be made
					 in a manner to develop maximum splice efficiencies as set forth in wire rope
					 manufacturer's tables.
(i) When
					 wire rope clips (Crosby type) are used on any wire rope, the U-bolts shall be
					 on the dead or short end of the rope and the saddle on the live end.
(j) The maximum number of clips on any wire
					 rope, for end attachments shall be not less than specified in the
					 manufacturer's tables for the rope diameter, and type of rope construction but
					 in no case less than three (3). The spacing of the clips shall be approximately
					 six (6) times the diameter of the rope. All clip bolts shall be kept
					 tight.
(k) Where wedge or
					 compressed fittings, or plate clamps are used on any wire rope, they shall be
					 applied in a manner specified by manufacturer's tables.
(l) When the dead line of a hoisting line is
					 secured to a dead line anchor and surplus or reserve line continues beyond the
					 anchor, the line shall be secured to the anchor in such a manner as to prevent
					 its being kinked, distorted or otherwise damaged.
1.
						Amendment filed 7-20-59; effective thirtieth day thereafter (Register 59, No.
						12).
2. Amendment of article 41 heading, section heading, section
						and NOTE filed 5-8-95; operative 6-7-95 (Register 95, No.
						19).
Note: Authority cited: Section
						  142.3, Labor
						  Code. Reference: Section
						  142.3, Labor
						  Code.