California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 13 - Cranes and Other Hoisting Equipment
Article 94 - Hydraulic Cranes and Excavators
Section 4949 - Boom Hoist and Supporting Mechanism
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) The boom hoist shall be capable of elevating and supporting the boom and 110% of rated load without attention from the operator and allow lowering to rated radius only when under operator's control.
(b) A holding device shall be provided.
(c) Minimum ratio of boom hoist drum and sheave pitch diameters to nominal rope diameters shall not be less than 15 to 1.
(d) On a telescoping boom, the retract function shall be capable of controlling 110% of rated load. A holding device (such as load check) shall be provided.
(e) Friction mechanisms. Where friction mechanisms (such as brakes and clutches) are used to control the boom hoist or load line hoist, they shall be:
(f) Hydraulic load hoists. Hydraulic drums shall have an integrally mounted holding device or internal static brake to prevent load hoist movement in the event of hydraulic failure.
1.
Amendment filed 8-29-86; effective thirtieth day thereafter (Register 86, No.
39).
2. New subsections (e)-(f) filed 7-26-2022; operative 7-26-2022
pursuant to Government Code section
11343.4(b)(3)
(Register 2022, No. 30). Filing deadline specified in Government Code section
11349.3(a)
extended 60 calendar days pursuant to Executive Order N-40-20 and an additional
60 calendar days pursuant to Executive Order
N-71-20.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.