Document: NRC Regulatory Guide
Document ID: 83589d93-c6fc-479f-bebb-e115953f8c09
Document Type: regulatory_guide
Title: Containment Isolation Provisions for Fluid Systems + HISTORY –HISTORY 10/2015 – Periodic Review of Revision 1 – Reviewed with issues identified for future consideration
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1523/ML15236A283.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.141
CFR Part: 
CFR Title: 

Content:
ate” content. For the above reasons, any future revision of the RG 1.141 should adopt ANSI/ANS-56.2-1984, or a newer revision if available, with associated exceptions and clarifications. This change should appropriately reference the other industry standards and guidance which contain the staffs’ regulatory positions associated with the adoption of ANS 56.2/ANSI N271-1976 in Revision1 to RG 1.141. A review of the references with RG 1.141 and of NUREG-0800, “Standard Review Plan,” was performed to ascertain if any changes in the references warranted a revision to RG 1.141. The review found no changes that would require a revision of RG 1.141. - 2 - There are no known current technical or regulatory issues with Revision 1 of the RG. 2. What is the impact on internal and external stakeholders of not updating the RG for the known issues, in terms of anticipated numbers of licensing and inspection activities over the next several years? For operating reactors, their primary containment fluid system penetration and isolation barrier design has been long established and configurations other than described in the RG have been reviewed and approved by the staff. There are no known issues with those nuclear units currently in construction or have had designs approved that would suggest a near term need to revise this RG. 3. What is an estimate of the level of effort needed to address identified issues in terms of full-time equivalent and contractor resources? The staff identified no technical issues during its review and a revision is not planned at this time, therefore no estimate of resources was made. 4. Based on the answers to the questions above, what is the staff action for this guide (Reviewed with no issues identified, Reviewed with issues identified for future consideration, Revise, or Withdraw)? The staff reviewed RG 1.141 and identified no technical issues. However, some non-technical issues were identified for future consideration. 5. Provide a conceptual