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 18 - Standard Type Derricks › Section 6560 - Inside Derrick Platforms

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) An inside derrick platform shall be
					 provided in the derrick tower at each elevation where an employee is normally
					 required to handle pipe, sucker rods or other equipment racked in the derrick
					 tower.
(b) The working edge of
					 inside derrick platforms shall be placed with sufficient clearance for safe
					 passage of the traveling block and to permit the employee, if working from the
					 platform, to reach the elevator.
(c) Every inside derrick platform, monkey
					 board type excepted, shall completely cover the space from the working edge
					 back to the derrick girts.
(d)
					 Every monkey board type platform shall be secured to the derrick with bolts or
					 equivalent fastenings to resist being shifted or dislodged under normal
					 operating conditions.
(e) Except
					 for the monkey board type, every inside derrick platform of metal construction
					 shall have the decking at each end and near the working side secured to the
					 derrick girts or other platform supports with machine bolts, "U" bolts, or "J"
					 bolts.
(f) The space between the
					 derrick girt and the monkey board shall be completely covered at the normal
					 point of access to the monkey board. Monkey board type platforms shall be at
					 least twenty-four inches (24") across their least horizontal dimension.
EXCEPTION: This subsection does not apply to (G-1)
						derricks unless the monkey board type platform is installed after the effective
						date of these orders.
(g)
					 Except for the monkey board type, every inside derrick platform of wood
					 construction shall have each end of the decking plank or planks on the working
					 side secured to the derrick girts or other platform supports with machine
					 bolts, "U" bolts, or "J" bolts.
(h)
					 A vertical clearance of at least six and one-half feet (6 1/2') shall be
					 maintained above the decking of each inside derrick platform.
(i) No inside derrick platform shall be in
					 such a position that the hoisting line, running to the hoist drum, will run
					 through or in contact with the platform unless provisions are made to prevent
					 the platform from being abraded by the line and the line guarded to prevent
					 employees working on the platform contacting it.
(j) Inside derrick platform shall not be
					 installed in a derrick in such a position that it would obstruct the driller's
					 or hoist operator's view, when at their operating stations, of either the crown
					 block or the traveling block at any point of its travel.
(k) An inside derrick platform which is more
					 than three and one-half feet (3 1/2') above the outside derrick platform which
					 serves it and to which the main derrick ladder does not provide direct access
					 shall have access provided thereto by means of an auxiliary derrick ladder from
					 the outside derrick platform below to a point not less than three and one-half
					 feet (3 1/2') above the inside platform.
(l) A finger or finger brace shall not be
					 used as a principal inside derrick platform. A finger board may be used as an
					 inside derrick platform when it meets the requirements for an inside derrick
					 platform and provides safe working space between the traveling block or
					 hoisting lines and the pipe racked in the derrick tower.
1.
						Amendment filed 7-20-59; effective thirtieth day thereafter (Register 59, No.
						12).
2. Amendment of subsections (b), (d), (i), (j) 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.