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Standard Format and Content for Post-Shutdown Decommissioning Activities Report

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Nuclear Regulatory Commission.


Regulatory guide; issuance.


The U.S. Nuclear Regulatory Commission (NRC) is issuing Revision 1 of Regulatory Guide (RG) 1.185, “Standard Format and Content for Post-shutdown Decommissioning Activities Report.” This guide describes a method that the NRC staff considers acceptable for use in complying with the Commission's requirements regarding the submission of a post-shutdown decommissioning activities report (PSDAR).


Please refer to Docket ID NRC-2012-0299 when contacting the NRC about the availability of information regarding this document. You may access information related to this document, which the NRC possesses and is publically available, using the following methods:

  • Federal Rulemaking Web site: Go to and search for Docket ID NRC-2012-0299. Address questions about NRC dockets to Carol Gallagher; telephone: 301-492-3668; email: For technical questions, contact the individual(s) listed in the FOR FURTHER INFORMATION CONTACT section of this document.
  • NRC's Agencywide Documents Access and Management System (ADAMS): You may access publicly available documents online in the NRC Library at​reading-rm/​adams.html. To begin the search, select “ADAMS Public Documents” and then select “Begin Web-based ADAMS Search.” For problems with ADAMS, please contact the NRC's Public Document Room (PDR) reference staff at 1-800-397-4209, 301-415-4737, or by email to The ADAMS accession number for each document referenced in this notice (if that document is available in ADAMS) is provided the first time that a document is referenced. Revision 1 of Regulatory Guide 1.185 is available in ADAMS under Accession No. ML13140A038. The regulatory analysis may be found in ADAMS under Accession No. ML13140A039.
  • NRC's PDR: You may examine and purchase copies of public documents at the NRC's PDR, Room O1-F21, One White Flint North, 11555 Rockville Pike, Rockville, Maryland 20852.

Regulatory guides are not copyrighted, and NRC approval is not required to reproduce them.

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James Shepherd, Office of Federal and State Materials and Environmental Management Programs, telephone: 301-415-6712, email: or Edward O'Donnell, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001; telephone: 301-251-7455, email:

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I. Introduction

The NRC is issuing a revision to an existing guide in the NRC's “Regulatory Guide” series. This series was developed to describe and make available to the public information such as methods that are acceptable to the NRC staff for implementing specific parts of the agency's regulations, techniques that the staff uses in evaluating specific problems or postulated accidents, and data that the staff needs in its review of applications for permits and licenses.

The NRC issued Revision 1 of RG 1.185 with a temporary identification as Draft Regulatory Guide, DG-1272, in the Federal Register on December 19, 2012 (77 FR 75198), for a 60-day public comment period. The public comment period closed on February 19, 2013, and the NRC did not receive any comments. This revision updates RG 1.185 to reflect lessons learned since its original issuance in 2000. It identifies the type of information that the PSDAR must contain and establishes a standard format for the PSDAR that the NRC staff considers acceptable. The PSDAR is required of nuclear power plant licensees before or within two years of permanent cessation of operations. The report must include a description of the licensee's planned decommissioning activities, a schedule for the accomplishment of significant milestones, an estimate of expected costs, and a discussion of the licensee's evaluation of the environmental impacts associated with site-specific decommissioning activities.

Revision 1 of RG 1.185 represents the NRC staff's current guidance for future users and applications. Earlier versions of this regulatory guide, however, continue to be acceptable for those licensees whose licensing basis includes earlier versions of this regulatory guide, absent a licensee-initiated change to its licensing basis. Additional information on the NRC staff's use of this revised regulatory guide with respect to both current and future users and applications is set forth in the “Implementation” section of the revised regulatory guide.

II. Congressional Review Act

This regulatory guide is a rule as defined in the Congressional Review Act (5 U.S.C. 801-808). However, the Office of Management and Budget has not found it to be a major rule as defined in the Congressional Review Act.

III. Backfitting and Issue Finality

Issuance of this final regulatory guide does not constitute backfitting as defined in 10 CFR 50.109 (the Backfit Rule) and is not otherwise inconsistent with the issue finality provisions in 10 CFR part 52. As discussed in the “Implementation” section of this regulatory guide, the NRC has no current intention to impose this regulatory guide on holders of current operating licenses or combined licenses.

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Dated at Rockville, Maryland, this 19th day of June, 2013.

For the Nuclear Regulatory Commission.

Thomas H. Boyce,

Chief, Regulatory Guide Development Branch, Division of Engineering, Office of Nuclear Regulatory Research.

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[FR Doc. 2013-15426 Filed 6-26-13; 8:45 am]