[Federal Register Volume 76, Number 88 (Friday, May 6, 2011)]
[Notices]
[Pages 26320-26321]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-11108]


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NUCLEAR REGULATORY COMMISSION

[NRC-2009-0481]


Draft Regulatory Guide: Reissuance and Availability

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice of Reissuance and Availability of Draft Regulatory 
Guide, DG-1217 ``Protection Against Turbine Missiles.''

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SUMMARY: On November 2, 2009 (74 FR 56672), the U.S. Nuclear Regulatory

[[Page 26321]]

Commission (NRC) published a notice of issuance and availability of 
Draft Regulatory Guide (DG)--1217, ``Protection Against Turbine 
Missiles.'' The guide is being reissued to allow further public review 
and comment following additional changes to the document.

FOR FURTHER INFORMATION CONTACT: Simon Sheng, U.S. Nuclear Regulatory 
Commission, Washington, DC 20555-0001, telephone: 301-415-2280, e-mail 
[email protected] or R.A. Jervey, telephone: 301-251-7404, e-mail 
[email protected]

SUPPLEMENTARY INFORMATION: 

I. Introduction

    The U.S. Nuclear Regulatory Commission (NRC) is reissuing for 
public comment a draft guide in the agency's ``Regulatory Guide'' 
series. This series was developed to describe and make available to the 
public such information as methods that are acceptable to the NRC staff 
for implementing specific parts of the NRC'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.
    General Design Criterion 4, ``Environmental and Dynamic Effects 
Design Bases,'' of Appendix A, ``General Design Criteria for Nuclear 
Power Plants,'' to Title 10 of the Code of Federal Regulations (10 CFR) 
Part 50, ``Domestic Licensing of Production and Utilization 
Facilities,'' requires, in part, that structures, systems, and 
components important to safety be appropriately protected against the 
effects of missiles that might result from equipment failures. Failures 
that could occur in the large steam turbines of the main turbine-
generator sets have the potential for producing large high-energy 
missiles.
    This guide describes methods acceptable to the NRC staff for 
protecting structures, systems, and components (SSCs) against missiles 
resulting from turbine failure by the appropriate orientation and 
placement of the turbine-generator set, the management of the 
probability of turbine missile generation, and the use of missile 
barriers. The guide also identifies SSCs to be considered in designing 
protection from turbine missiles.
    The draft regulatory guide (DG) is temporarily identified by its 
task number, DG-1217, which should be mentioned in all related 
correspondence. DG-1217 is proposed Revision 2 of Regulatory Guide 
1.115, Revision 1, dated July 1977, ``Protection Against Turbine 
Missiles.'' DG-1217 was previously issued for comment November 2, 2009 
(74 FR 56672). The draft guide is being reissued to allow further 
public review and comment following additional changes to the document. 
DG-1217 now identifies that applicants who choose to use a risk 
informed approach to demonstrate adequate protection against turbine 
missiles would be considered on a case-by-case basis. Additionally, DG-
1217 uses the term `essential', instead of the term `safety related' to 
define affected SSCs.
    Previously received public comments and the staff's consideration 
may be reviewed electronically under the NRC's Agencywide Documents 
Access and Management System (ADAMS) Accession Number ML101660585.

II. Further Information

    The NRC staff is soliciting comments on DG-1217. Comments may be 
accompanied by relevant information or supporting data and should 
mention DG-1217 in the subject line. Comments submitted in writing or 
in electronic form will be made available to the public in their 
entirety through the NRC's Agencywide Documents Access and Management 
System (ADAMS).
    ADDRESSES: You may submit comments by any one of the following 
methods. Please include Docket ID NRC-2009-0481 in the subject line of 
your comments. Comments submitted in writing or in electronic form will 
be posted on the NRC Web site and on the Federal rulemaking website 
Regulations.gov. Because your comments will not be edited to remove any 
identifying or contact information, the NRC cautions you against 
including any information in your submission that you do not want to be 
publicly disclosed.
    The NRC requests that any party soliciting or aggregating comments 
received from other persons for submission to the NRC inform those 
persons that the NRC will not edit their comments to remove any 
identifying or contact information, and therefore, they should not 
include any information in their comments that they do not want 
publicly disclosed.
    Federal Rulemaking Web site: Go to http://www.regulations.gov and 
search for documents filed under Docket ID NRC-2009-0481. Address 
questions about NRC dockets to Carol Gallagher 301-492-3668; e-mail 
[email protected].
    Mail comments to: Cindy K. Bladey, Chief, Rules, Announcements, and 
Directives Branch (RADB), Office of Administration, Mail Stop: TWB-05-
B01M, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or 
by fax to RADB at 301-492-3446.
    You can access publicly available documents related to this notice 
using the following methods:
    NRC's Public Document Room (PDR): The public may examine and copy 
for a fee publicly available documents at the NRC's PDR, Room O1 F21, 
One White Flint North, 11555 Rockville Pike, Rockville, Maryland.
    NRC's Agencywide Documents Access and Management System (ADAMS): 
Publicly available documents created or received at the NRC are 
available electronically at the NRC's Electronic Reading Room at http://www.nrc.gov/reading-rm/adams.html. From this page, the public can gain 
entry into ADAMS, which provides text and image files of NRC's public 
documents. If you do not have access to ADAMS or if there are problems 
in accessing the documents located in ADAMS, contact the NRC's PDR 
reference staff at 1-800-397-4209, 301-415-4737, or by e-mail to 
[email protected]. The Regulatory Analysis is available 
electronically under ADAMS Accession Number ML103350166.
    Comments would be most helpful if received by June 3, 2011. 
Comments received after that date will be considered if it is practical 
to do so, but the NRC is able to ensure consideration only for comments 
received on or before this date. Although a time limit is given, 
comments and suggestions in connection with items for inclusion in 
guides currently being developed or improvements in all published 
guides are encouraged at any time.
    Electronic copies of DG-1217 are available through the NRC's public 
Web site under Draft Regulatory Guides in the ``Regulatory Guides'' 
collection of the NRC's Electronic Reading Room at http://www.nrc.gov/reading-rm/doc-collections/. Electronic copies are also available in 
ADAMS (http://www.nrc.gov/reading-rm/adams.html), under Accession No. 
ML103350136.
    Regulatory guides are not copyrighted, and Commission approval is 
not required to reproduce them.

    Dated: Dated at Rockville, Maryland, this 28th day of April, 
2011.

    For the Nuclear Regulatory Commission.
Harriet Karagiannis,
Acting Chief, Regulatory Guide Development Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2011-11108 Filed 5-5-11; 8:45 am]
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