Subpart CC
The standard provides additional safety requirements that apply when dismantling booms and jibs, including when changing boom length; these requirements must be followed whether you use the manufacturer's procedures or employer-developed procedures. See 1926.1405 for the full title and scope.
No. Under 1926.1405(a), none of the pins in the pendants may be removed either partly or completely while the pendants are in tension. Removing pins when lines are supporting load risks uncontrolled movement and collapse.
No. Under 1926.1405(b), none of the pins (top or bottom) on boom sections located between the pendant attachment points and the crane/derrick body may be removed (partly or completely) while the pendants are in tension.
No. Under 1926.1405(c), none of the pins (top or bottom) on boom sections located between the uppermost boom section and the crane/derrick body may be removed (partly or completely) while the boom is being supported by the uppermost boom section resting on the ground or other support.
No. Under 1926.1405(d), none of the top pins on boom sections located on the cantilevered portion being removed (the portion ahead of the pendant attachment points) may be removed (partly or completely) until that cantilevered section is fully supported.
Yes. Each subsection of 1926.1405 expressly forbids removing pins "partly or completely" in the listed situations, so the prohibition covers both partial and complete removal.
Yes. The title and text of 1926.1405 state these are additional requirements that apply whether you follow the manufacturer's procedures or employer-developed procedures for dismantling booms and jibs.
Yes. 1926.1405 explicitly covers dismantling operations including dismantling for changing the length of booms and jibs, so the same pin-removal rules apply during length changes.
Yes. The standard addresses both top and bottom pins in several places: 1926.1405(a) and 1926.1405(b) refer to pins in pendants and to top or bottom pins; 1926.1405(c) explicitly mentions top or bottom pins between the uppermost section and the crane body, while 1926.1405(d) specifically highlights top pins on cantilevered portions.
Yes — but only when they are not supporting load. 1926.1405(a) prohibits pin removal when pendants are in tension; if pendants are truly slack (not in tension and not supporting the structure), removal would not be barred by that subsection. Employers should document how they verified the pendants are not in tension before removal and complete a hazard assessment as part of their procedures (see OSHA hazard-assessment guidance). For help on employer hazard assessment responsibilities, see OSHA’s PPE hazard assessment interpretation at https://www.osha.gov/laws-regs/standardinterpretations/2024-03-28.
You must ensure the cantilevered section is independently supported so it will not rely on the pins being removed; until that condition exists you may not remove the top pins (per 1926.1405(d)). Employers should perform a documented hazard assessment and use qualified methods (mechanical supports, blocking, cribbing, or engineered supports) to verify full support before pin removal. See OSHA guidance on employer hazard assessment responsibilities at https://www.osha.gov/laws-regs/standardinterpretations/2024-03-28 for expectations about evaluating and documenting workplace hazards.
Yes. The caption and scope of 1926.1405 read "Disassembly--additional requirements for dismantling of booms and jibs," so the pin-removal limits apply to both booms and jibs.
The standard uses the term to identify where pendants connect to boom sections; 1926.1405(b) prohibits removing pins on boom sections located between those pendant attachment points and the crane/derrick body while the pendants are in tension. In practice, this means any boom section that is supported or stabilized by pendants attached at those points must not have pins removed while those pendants are carrying load.
No. The text of 1926.1405 contains no express exceptions allowing removal of pins (partly or completely) while pendants are in tension; the prohibitions are absolute in the listed situations. If an emergency situation arises, employers should follow site-specific emergency procedures and consult qualified personnel, but the regulatory text itself does not provide an exception.
Removing pins while pendants are in tension can lead to sudden uncontrolled movement, collapse of boom sections, dropped sections, and serious injury or death to workers nearby; those outcomes are why 1926.1405(a)–(d) prohibit pin removal in the listed circumstances. Employers must eliminate these hazards through proper support, rigging, and hazard assessment (see OSHA hazard-assessment interpretation at https://www.osha.gov/laws-regs/standardinterpretations/2024-03-28).
The employer is responsible for complying with 1926.1405 and for ensuring safe dismantling procedures are followed, including completing appropriate hazard assessments and documenting controls. OSHA’s interpretation on hazard assessments emphasizes employer responsibility to assess workplace hazards and select controls and PPE as needed (see https://www.osha.gov/laws-regs/standardinterpretations/2024-03-28).
When the boom is being supported by the uppermost boom section resting on the ground (or other support), 1926.1405(c) prohibits removing any of the pins (top or bottom) on boom sections located between that uppermost section and the crane/derrick body (partly or completely). These pins must remain in place while that support condition exists.
Yes. 1926.1405(d) specifically prohibits removing the top pins on boom sections located on the cantilevered portion being removed until that cantilevered section is fully supported; the subsection calls out top pins specifically, whereas other subsections mention top or bottom pins depending on the location and support condition.
You must first ensure conditions in the applicable subsection are met (for example, pendants are not in tension and cantilevered sections are fully supported before removing top pins). Employers should:
These steps follow the safety intent of 1926.1405 and OSHA’s expectation that employers assess and control hazards (see https://www.osha.gov/laws-regs/standardinterpretations/2024-03-28).
No — employers must assess the current workplace hazards before work begins and cannot rely blindly on past plans. OSHA’s PPE hazard-assessment interpretation explains that employers must assess the workplace to determine hazards and document evaluations when PPE is required; the same principle applies to planning dismantling operations under 1926.1405. See the OSHA interpretation at https://www.osha.gov/laws-regs/standardinterpretations/2024-03-28 for employer assessment responsibilities.