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:
c Code requirements on the use of special processes, the suitability of a process is assessed on the basis of service experience with similar parts fabricated by the process being reviewed. 3. Special Methods for Nondestructive Examination | Section V of the Code includes methods for performing nondestructive examina- tions to detect surface and internal discontinuities.when these methods are referenced by Section III of the Code. They include the following methods: radiographic, magnetic particle, liquid penetrant, and ultrasonic. The methods as described are applicable to most geometric configurations and materials encountered in fabrication, and are applied for normal condi- tions. However, special configurations and materials may require modified methods and techniques. If such special procedures are developed, the reviewer must determine that they are equivalent or superior to the techni- ques described in Section V of the Code, and are capable of producing meaningful results under the special conditions. Such special procedures may be modifications or combinations of methods described in Section V, or may be entirely different, but the reviewer verifies that they have been proven by demonstration to result in an examination capable of detecting discontinuities under the special condi- tions to the same extent that applicable normal techniques which are included in Section V would result in detection of discontinuities under normal conditions. Such special procedures are submitted to the authorized inspector or inspecting agency for review and approval prior to use. 4. Special Controls and Special Processes Used for Ferritic Steels and Austenitic Stainless steels The controls on welding of ferritic steels and austenitic stainless steels discussed in Standard Review Plan Section 5.2.3, "Reactor Coolant Pressure Boundary Materials," are considered applicable to welding of the reactor vessel and its components. The reviewer verifies that any special welding