Document: NRC Regulatory Guide
Document ID: f894855a-c715-452f-b015-247eb7da60f0
Document Type: regulatory_guide
Title: Irreversible and Irretrievable Commitment of Material Resources
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1306/ML13064A122.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.10
CFR Part: 
CFR Title: 

Content:
th the Atomic Energy Commission's Directorates of Regulatory Standards and Licensing on the problem of material resource commitment. This report gives a detailed estimate of the materials contained in a typical 1 000-MWe pressurized water reactor power plant, where typical parameters are defined in terms of a referenced model plant (estimates of materials contained- in boiling water reactors, high-temperature gas-cooled reactors, and cooling towers were not discussed in the report). Reference plant features, methods used in making the estimate, accuracy of the estimates, and the accounting system employed are discussed in the report. Estimated quantities of the composite materials and their constitu- ,ents are summarized and presented in detail for each portion of the power plant. The estimates given in Tables 1 and 2 of Reference 1 can be utilized to assess approximate maximum use (assuming no recycling) of material resources for plants of the type studied and for other sizes or types of plants by using appropriate scaling factors, where feasible, or other reasonable adjustment assumptions. For PWRs sufficiently similar to the model, a linear scale factor is acceptable. It is desirable to augment the required discussion by comparing materials used at one station to total U.S. consumption, U.S. reserves, and world production, as reported in standard references such as Reference 2. C. REGULATORY POSITION Reference 1 forms a basis acceptable to the NRC staff for required discussions- of irreversible and irretrievable commitments of material resources involved in plant construction. *Lines indicate substantive changes from previous issue. Is USNRC REGULATORYGUIDES Comments should be sent to the Secretary of the Commission, U.S. Nuclear Regulatory Commission. Washington. D.C. 20555. Attention: Docketing and Regulatory Guides are issued to describe and make available to the public Service Section, methods acceptable to the NRC staff of implementing specific parts of the