Document: NUREG-0800
Document ID: d4acff25-51e1-4891-b590-9ad78ef4833e
Document Type: srp
Title: REACTOR VESSEL MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340633.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.1
CFR Part: 
CFR Title: 

Content:
or nondestructive examination of the reactor vessel and its appurtenances have been identified and have been found equivalent or superior to the techniques described in Appendix X of Code Section III. Demonstrations have been made using these special techniques and have satisfied all requirements of the Code. The special methods of nondestruc- tive examination-are deemed acceptable. This acceptability based on the Code provisions satisfies the quality standards requirements of GDC 1, GDC 30, and §50.55a. 4. Special controls and special welding processes used for welding the reactor vessel and its appurtenances have been identified and found to be qualified in accordance with the requirements of Code Sections III and IX. Qualifica- tion in accordance with the Code provisions meets the requirements of GDC 1, GDC 30, and §50.55a concerning quality standards. 5. When welding components of ferritic steels as identified in Item 4 above, Code controls are supplemented by conformance with the recommendations of regulatory guides as follows: a. The controls imposed on welding preheat temperatures are in comformance with the recommendations of Regulatory Guide 1.50, "Control of Preheat Temperature for Welding of Low-Alloy Steel," since these controls provide reasonable assurance that cracking of components made from low alloy steels will not occur during fabrication and minimize the potential for subsequent cracking. These controls also satisfy the quality standards requirements of GOC 1, GDC 30, and §50.55a. b. The controls imposed on electroslag welding of ferritic steels are in conformance with the recommendations of Regulatory Guide 1.34, 5.3.1-11 Rev. 1 - July 1981 "Control of Electroslag Weld Properties," because the welds fabricated by the process will ensure high integrity and will have a sufficient degree of toughness to furnish adequate safety margins. These controls satisfy the quality standards requirements of GDC 1, GDC 30, and §50.55a. c. The controls