Document: NRC Regulatory Guide
Document ID: ae72d1f2-aba4-4afd-bf00-6a4263c3f3e9
Document Type: regulatory_guide
Title: Control of Heavy Loads at Nuclear Facilities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2100/ML21006A335.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.244
CFR Part: 
CFR Title: 

Content:
credited to ensure essential safety functions would be maintained, then the handling system design should meet the crane and lifting device standards by conforming to the following guidelines: (1) The crane should meet the endorsed standard as described in Regulatory Position C.2, unless one of the exceptions defined in (2) applies. (2) If the proposed nuclear safety critical lift is • outside of nuclear power plant structures (e.g., operations related to an independent spent fuel storage facility), • involves an infrequent major component replacement, or DG - 1381, Page 11 of 16 • inside nuclear power plant structures with inadequate space or strength to accommodate a crane conforming to Regulatory Position C.2, then the alternative lifting system designs should be consistent with the critical lift guidelines of Section 4-1.1, “Overhead Crane,” of ASME Std. NML-1, and the design should satisfy the following criteria: (a) meet applicable national consensus standard(s) for the type(s) of lifting systems used, (b) apply quality assurance in design, fabrication, installation, and initial testing, (c) apply conservative design criteria to the structural elements essential to support the load, (d) apply conservative design criteria to the mechanical components essential to stopping or holding the load, (e) include redundancy in the design of mechanical components essential to stopping or holding the load that are subject to fatigue or wear, (f) use fail-safe electrical systems and components when failure of the electrical system or component could affect the ability to stop or hold the load, (g) Apply appropriate quality assurance measures to electrical components intended to detect equipment failures and that actuate following those equipment failures to stop or hold the load. (3) Special lifting devices and load attachment points should meet the endorsed standard as described in Regulatory Position C.3. (4) Standard lifting devices (e.g., slings) and lifting