Document: NRC Regulatory Guide
Document ID: a85f80f8-a5b4-4f0a-84fd-1eb04d49dd57
Document Type: regulatory_guide
Title: Service Level I, II, and III Protective Coatings Applied to Nuclear Power Plants + HISTORY - HISTORY 08/2016 – DG-1331 , Proposed Revision 3 10/2015 – Periodic Review of Revision 2 – Revise 10/2010 – Periodic Review of Revision 1 – No issues identified 04/2010 – DG-1242 , Proposed Revision 2 03/1999 – DG-1076 , Proposed Revision 1 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1609/ML16097A448.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.54
CFR Part: 
CFR Title: 

Content:
te that a coating on the external surface of a reactor containment may be designated Service Level III, although no plants licensed under 10 CFR Part 50 have applied this designation.) On November 14, 2014, the NRC staff issued the interim staff guidance (ISG), LR-ISG-2013-01, “Aging Management of Loss of Coating or Lining Integrity for Internal Coatings/Linings on In-Scope Piping, Piping Components, Heat Exchangers, and Tanks” (Ref. 14). The ISG was issued based on the NRC staff’s review of industry operating experience related to degradation of coatings. Appendix C of the ISG provides a new aging management program, GALL Report AMP XI.M42, “Internal Coatings/ Linings for In-Scope Piping, Piping Components, Heat Exchangers, and Tanks.” AMP XI.M42 includes recommendations related to managing loss of coating or lining integrity because of blistering, cracking, flaking, peeling, delamination, rusting, or physical damage, and spalling for cementitious coatings/linings, of in-scope piping, piping component, heat exchanger, and tank internal coatings/linings. Internal coatings are not included in the definitions of Service Level I or III. Examples of internally coated components that are not included within the Service Level I and III definitions include: (1) components inside containment with internal coatings (e.g., internally coated reactor coolant pump lubricating oil cooler), (2) SSCs that support a fire-protection-intended function (e.g., internal coatings on a fire water storage tank), and (3) SSCs that support a station blackout intended function (e.g., internal coatings on a makeup water line that provides an alternative source of cooling water inventory). The first example is not covered by the Service Level I definition because degradation of these coatings would not adversely affect the operation DG-1331, Page 6 of post-accident fluid systems. The latter two examples are not covered by the Service Level III definition because the fire protection and