Document: NUREG-0800
Document ID: 22d810e7-740f-4bf3-8bcd-8e3f969ca03f
Document Type: srp
Title: OVERHEAD HEAVY LOAD HANDLING SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070510.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.1.5
CFR Part: 
CFR Title: 

Content:
er specific criteria necessary to meet the relevant requirements of General Design Criterion Criteria 2, 4, and 61 are as follows: 20 a. NUREG-0554 (formerly proposed Regulatory Guide 1.104 and Branch Technical Position ASB 9-1) , as modified by Generic Letter 83-042, to ensure that power 21 22 control systems do not cause a load drop. b. NUREG-0612, as modified by Generic Letter 85-011.23 c. ANS 57.1/ANSI N208. d. ANS 57.2/ANSI N210. Technical Rationale24 The technical rationale for application of these acceptance criteria to reviewing overhead heavy load handling systems is discussed in the following paragraphs:25 DRAFT Rev. 1 - April 1996 9.1.5-6 1. Compliance with GDC 2 requires that structures, systems, and components important to safety shall be designed to resist the effects of natural phenomena such as earthquakes. GDC 2 is applicable to SRP Section 9.1.5 because it specifies the natural phenomenon (i.e., earthquake) that must be considered in the design of the OHLHS. If not considered, an earthquake could overload OHLHS structures, systems, and components to the extent that it could cause an unsafe condition (e.g., a dropped heavy load in a critical area). The potential release of radioactive materials from damaged irradiated fuel or a criticality accident could result in unacceptable personnel radiation exposures. SRP Section 9.1.5 cites Regulatory Guide 1.29, position C.1 for safety-related portions and position C.2 for nonsafety-related portions of the design, as well as positions C.1 and C.6 of Regulatory Guide 1.13. These positions provide guidance for meeting these requirements. Meeting these requirements provides assurance that structures, systems, and components associated with the OHLHS will perform their functions safely.26 2. Compliance with GDC 4 requires that structures, systems, and components important to safety be protected against the effects of missiles. GDC 4 is applicable to SRP Section 9.1.5 because GDC 4 specifies protection against