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:
. Based on the review of the applicant's proposed design criteria and design bases for the OHLHS, and the requirements for safe operation of the OHLHS, the staff concludes that the design of the OHLHS and supporting systems is in conformance with the Commission's regulations as set forth in General Design Criteria 2, 4, 5, and 61. This conclusion is based on the following: 1. The requirements of General Design Criterion 2 are met as they relate to protection against the effects of earthquakes since the safety-related portions of the system are designed in accordance with position C.1 of Regulatory Guide 1.29 and C.1 of Regulatory Guide 1.13 and the nonsafety-related portions meet position C.2 of Regulatory Guide 1.29 and position C.6 of Regulatory Guide 1.13. In meeting Criterion 2, the applicant has also designed the systems to meet the guidelines of NUREG-0554 and NUREG-0612 as they relate to protection against natural phenomena. 2. The requirements of General Design Criteria 4 and 61 are met as they relate to prevention of internally generated missiles that could prevent safe shutdown, cause an unacceptable release of radioactivity, a criticality accident or the inability to cool the fuel in the reactor vessel or spent fuel storage pool. To meet Criteria 4 and 61 the applicant designed the systems in accordance with positions C.3 and C.5 of Regulatory Guide 1.13 and followed the guidelines of NUREG-0554 (as modified by Generic Letter 83-042) and NUREG-0612 (as 41 modified by Generic Letter 85-011) and followed industry standards ANS 42 57.1/ANSI N208 and ANS 57.2/ANSI N210 in the system design. 3. The requirements of General Design Criterion 5 are met since any single failure will not impair the safety function of the overhead heavy load handling system nor prevent the safe shutdown and cooldown of either or both units. For design certification reviews, the findings will also summarize, to the extent that the review is not discussed in other safety evaluation