Document: NRC Regulatory Guide
Document ID: 08cebcdf-2e81-4e08-a508-9f6b4701c0a5
Document Type: regulatory_guide
Title: Design, Fabrication, and Materials Code Case Acceptability, ASME Section III (Rev. 40)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2219/ML22195A282.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.84
CFR Part: 
CFR Title: 

Content:
N-133 (1761-1) Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves 1/14/77 N-133-1 N-133-2 Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3 5/19/85 7/18/85 DG-1405, Page 42 CODE CASE NUMBER TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION DATE N-154 (1791) Projection Resistance Welding of Valve Seats, Section III, Division 1, Class 1, 2 and 3 Valves 7/18/85 N-155-2 Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 1 (1) The design temperature for spray pond piping must be 100°C (212°F). (2) The allowable design stress must be the value obtained from the minimum hydrostatic design basis in Table 3611-1 of Code Case N-155-2 (Procedure A or B) or the value determined as one-sixth of the stress obtained from a short-time burst test for the pipe being qualified, whichever is lower. The short-time burst strength must be determined by bursting the pipe (ASTM D-1599-74) using free-end mounting after it has been exposed to 1x105 pressure cycles from atmospheric to design pressure. (3) The value of “K” in Equation 9 of Paragraph 3652 must be limited to 1.2 unless it can be demonstrated that, with the use of a large value of K1, the functional capability of the system will not be impaired during upset and emergency conditions. (4) RTR piping must be uninsulated or uncovered and installed under conditions that make it readily accessible for inspection. (5) Preoperational and inservice inspections must be as follows: (a) During the preoperational testing period, tests must be made to verify that the piping is free of vibration induced by weather conditions or water flow that could fatigue the piping prematurely. (b) Fiberglass-reinforced piping components must be inspected in accordance with ASME Code, Section XI, for Code Class 3 components. In addition, all pipe supports must be inspected. (c) Inspection frequency for piping must be increased to