Risk-Informed Changes to Loss-of-Coolant Accident Technical Requirements, 48667-48668 [E9-23043]

Download as PDF 48667 Proposed Rules Federal Register Vol. 74, No. 184 Thursday, September 24, 2009 This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. NUCLEAR REGULATORY COMMISSION 10 CFR Parts 50 and 52 RIN 3150–AH29 [NRC–2004–0006] Risk-Informed Changes to Loss-ofCoolant Accident Technical Requirements cprice-sewell on DSK2BSOYB1PROD with PROPOSALS AGENCY: Nuclear Regulatory Commission. ACTION: Supplemental proposed rule: Extension of comment period. SUMMARY: On August 10, 2009, the Nuclear Regulatory Commission (NRC) published for public comment a supplemental proposed rule that would amend the requirements that govern domestic licensing of production and utilization facilities and licenses, certifications, and approvals for nuclear power plants to allow current and certain future power reactor licensees and applicants to choose to implement a risk-informed alternative to the current requirements for analyzing the performance of emergency core cooling systems (ECCS) during loss-of-coolant accidents (LOCA). The proposed amendments would also establish procedures and acceptance criteria for evaluating certain changes in plant design and operation based upon the results of the new analyses of ECCS performance. The public comment period for this supplemental proposed rule is scheduled to close on September 24, 2009. The NRC has received a request to extend the comment period by 120 days. The NRC is granting this request and is also extending the comment period for the information collection aspects of this supplemental proposed rule by 60 days. DATES: The comment period for the supplemental proposed rule, published August 10, 2009, (74 FR 40006), is extended by 120 days and now expires on January 22, 2010. The comment period for the information collection VerDate Nov<24>2008 15:18 Sep 23, 2009 Jkt 217001 aspects of this proposed rulemaking is extended by 60 days and now expires on November 9, 2009. Comments received after these dates will be considered if it is practical to do so, but the Commission is able to ensure consideration only for comments received before these dates. ADDRESSES: You may submit comments by any one of the following methods. Comments submitted in writing or in electronic form will be posted on the NRC Web site and on the Federal rulemaking Web site 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 e-Rulemaking Portal: Go to https://www.regulations.gov and search for documents filed under Docket ID [NRC–2004–0006]. Address questions about NRC dockets to Carol Gallagher, telephone (301) 492–3668; e-mail Carol.Gallagher@nrc.gov. Mail comments to: Secretary, U.S. Nuclear Regulatory Commission, Washington, DC 20555–0001, ATTN: Rulemakings and Adjudications Staff. E-mail comments to: Rulemaking.Comments@nrc.gov. If you do not receive a reply e-mail confirming that we have received your comments, contact us directly at (301) 415–1677. Fax comments to: Secretary, U.S. Nuclear Regulatory Commission at (301) 492–3446. You can access publicly available documents related to this document using the following methods: NRC’s Public Document Room (PDR): The public may examine and have copied for a fee publicly available documents at the NRC’s PDR, Public File Area O–1F21, 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 PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 electronically at the NRC’s Electronic Reading Room at https://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, or (301) 415–4737, or by e-mail to PDR.Resource@nrc.gov. Federal Rulemaking Web site: Public comments and supporting materials related to this proposed rule can be found at https://www.regulations.gov by searching on Docket ID: NRC–2004– 0006. FOR FURTHER INFORMATION CONTACT: Richard Dudley, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, DC 20555–0001, telephone (301) 415– 1116, e-mail Richard.Dudley@nrc.gov. SUPPLEMENTARY INFORMATION: In a letter dated August 18, 2009 (ADAMS Accession No. ML092320126), the Nuclear Energy Institute (NEI) requested that the NRC extend the public comment period for the risk-informed ECCS rule by an additional 120 days. In its letter, NEI stated: [I]mplementation of the rule as currently drafted would require technical analyses in a wide variety of areas. It is therefore necessary to solicit input from numerous sources in developing comments on the draft supplemental proposed rule, and NEI is coordinating industry comments with the NSSS owners groups, vendors, and licensees to ensure that the comments submitted by industry are of high quality and that they reflect a consensus industry perspective. However, the comment period provided in the August 10th Federal Register Notice is insufficient given the volume and breadth of material that requires a thorough technical review. Extending the comment period would provide the time necessary to fully assess the impact of the draft supplemental proposed rule and arrive at a set of comments that are of highest value to the NRC staff in considering this important rulemaking. In view of the NRC’s desire to receive high quality comments from external stakeholders who would be directly affected by the supplemental proposed rule and recognizing the quantity of information to be analyzed and the E:\FR\FM\24SEP1.SGM 24SEP1 48668 Federal Register / Vol. 74, No. 184 / Thursday, September 24, 2009 / Proposed Rules coordination efforts needed by and among those stakeholders, the comment period for the proposed rulemaking will be extended for all stakeholders for an additional 120 days. The comment period for the information collection aspects of this proposed rulemaking will be extended by 60 days. The NRC believes that these extensions will allow sufficient time for all stakeholders to develop and provide meaningful comments on the proposed rule. The comment submittal deadline for the proposed rule is extended from the original September 24, 2009, deadline to January 22, 2010, and the information collection analysis comment deadline is extended from the original September 9, 2009, deadline to November 9, 2009. Dated at Rockville, Maryland, this 18th day of September 2009. For the Nuclear Regulatory Commission. Bruce S. Mallett, Acting Executive Director for Operations. [FR Doc. E9–23043 Filed 9–23–09; 8:45 am] BILLING CODE 7590–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2009–0791; Directorate Identifier 2008–NM–213–AD] RIN 2120–AA64 Airworthiness Directives; Dassault Model Falcon 2000 and Falcon 2000EX Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). cprice-sewell on DSK2BSOYB1PROD with PROPOSALS SUMMARY: We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: During the overhaul of a Main Landing Gear (MLG) of a Falcon 2000, the sleeve on the hydraulic flow restrictor in the shock absorber was found displaced, because of the rupture of its three retaining screws. * * * Failure of the retaining screws has been determined to be the final phase of a slow unscrewing process under normal operational conditions. The unsafe condition only exists once the three screws have failed. * * * VerDate Nov<24>2008 * * 15:18 Sep 23, 2009 Jkt 217001 The unsafe condition is failure of three retaining screws of the MLG shock absorber which could result in collapse of the landing gear during ground maneuvers or landing. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI. DATES: We must receive comments on this proposed AD by October 26, 2009. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–40, 1200 New Jersey Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Dassault Falcon Jet, P.O. Box 2000, South Hackensack, New Jersey 07606; telephone 201–440–6700; Internet https://www.dassaultfalcon.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227– 1221 or 425–227–1152. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Tom Rodriguez, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (425) 227–1137; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2009–0791; Directorate Identifier 2008–NM–213–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to https:// www.regulations.gov; including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2009–0050, dated March 5, 2009 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: During the overhaul of a Main Landing Gear (MLG) of a Falcon 2000, the sleeve on the hydraulic flow restrictor in the shock absorber was found displaced, because of the rupture of its three retaining screws. In this situation, the energy dissipation function of the shock absorber is lost and high loads may be transmitted to the aircraft structure during landing. Structural integrity may thus not be guaranteed over the entire certified landing conditions domain particularly in combination of high landing weight and high vertical speed. Failure of the retaining screws has been determined to be the final phase of a slow unscrewing process under normal operational conditions. The unsafe condition only exists once the three screws have failed. For the reasons described above, Airworthiness Directive (AD) 2008–0178 had been released to require a repetitive borescope inspection of the flow restriction system [for damage; such as condition of the sleeve of the dumping device, and broken or loose screws] and, if necessary, repair of the shock absorber per Dassault Aviation Service Bulletins (SB) F2000–367 and F2000EX–185 (corresponding to modification M3120) developed with the landing gear manufacturer’s instructions.* * * After qualification testing, modification M3120 has been approved by EASA as a definitive solution. As a consequence, the present AD retains the requirements of AD 2008–0178 which is superseded and introduces M3120 as a terminating action to the repetitive inspections requirement, and further mandates its embodiment no later than the next MLG shock absorber overhaul. The unsafe condition is failure of three retaining screws of the MLG shock E:\FR\FM\24SEP1.SGM 24SEP1

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NUCLEAR REGULATORY COMMISSION

[Federal Register Volume 74, Number 184 (Thursday, September 24, 2009)]
[Proposed Rules]
[Pages 48667-48668]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E9-23043]


========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 74, No. 184 / Thursday, September 24, 2009 / 
Proposed Rules

[[Page 48667]]



NUCLEAR REGULATORY COMMISSION

10 CFR Parts 50 and 52

RIN 3150-AH29
[NRC-2004-0006]


Risk-Informed Changes to Loss-of-Coolant Accident Technical 
Requirements

AGENCY: Nuclear Regulatory Commission.

ACTION: Supplemental proposed rule: Extension of comment period.

-----------------------------------------------------------------------

SUMMARY: On August 10, 2009, the Nuclear Regulatory Commission (NRC) 
published for public comment a supplemental proposed rule that would 
amend the requirements that govern domestic licensing of production and 
utilization facilities and licenses, certifications, and approvals for 
nuclear power plants to allow current and certain future power reactor 
licensees and applicants to choose to implement a risk-informed 
alternative to the current requirements for analyzing the performance 
of emergency core cooling systems (ECCS) during loss-of-coolant 
accidents (LOCA). The proposed amendments would also establish 
procedures and acceptance criteria for evaluating certain changes in 
plant design and operation based upon the results of the new analyses 
of ECCS performance.
    The public comment period for this supplemental proposed rule is 
scheduled to close on September 24, 2009. The NRC has received a 
request to extend the comment period by 120 days. The NRC is granting 
this request and is also extending the comment period for the 
information collection aspects of this supplemental proposed rule by 60 
days.

DATES: The comment period for the supplemental proposed rule, published 
August 10, 2009, (74 FR 40006), is extended by 120 days and now expires 
on January 22, 2010. The comment period for the information collection 
aspects of this proposed rulemaking is extended by 60 days and now 
expires on November 9, 2009. Comments received after these dates will 
be considered if it is practical to do so, but the Commission is able 
to ensure consideration only for comments received before these dates.

ADDRESSES: You may submit comments by any one of the following methods. 
Comments submitted in writing or in electronic form will be posted on 
the NRC Web site and on the Federal rulemaking Web site 
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 e-Rulemaking Portal: Go to https://www.regulations.gov and 
search for documents filed under Docket ID [NRC-2004-0006]. Address 
questions about NRC dockets to Carol Gallagher, telephone (301) 492-
3668; e-mail Carol.Gallagher@nrc.gov.
    Mail comments to: Secretary, U.S. Nuclear Regulatory Commission, 
Washington, DC 20555-0001, ATTN: Rulemakings and Adjudications Staff.
    E-mail comments to: Rulemaking.Comments@nrc.gov. If you do not 
receive a reply e-mail confirming that we have received your comments, 
contact us directly at (301) 415-1677.
    Fax comments to: Secretary, U.S. Nuclear Regulatory Commission at 
(301) 492-3446.
    You can access publicly available documents related to this 
document using the following methods:
    NRC's Public Document Room (PDR): The public may examine and have 
copied for a fee publicly available documents at the NRC's PDR, Public 
File Area O-1F21, 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 https://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, or (301) 415-4737, or by e-mail to 
PDR.Resource@nrc.gov.
    Federal Rulemaking Web site: Public comments and supporting 
materials related to this proposed rule can be found at https://www.regulations.gov by searching on Docket ID: NRC-2004-0006.

FOR FURTHER INFORMATION CONTACT: Richard Dudley, Office of Nuclear 
Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, DC 
20555-0001, telephone (301) 415-1116, e-mail Richard.Dudley@nrc.gov.

SUPPLEMENTARY INFORMATION: In a letter dated August 18, 2009 (ADAMS 
Accession No. ML092320126), the Nuclear Energy Institute (NEI) 
requested that the NRC extend the public comment period for the risk-
informed ECCS rule by an additional 120 days. In its letter, NEI 
stated:
    [I]mplementation of the rule as currently drafted would require 
technical analyses in a wide variety of areas. It is therefore 
necessary to solicit input from numerous sources in developing comments 
on the draft supplemental proposed rule, and NEI is coordinating 
industry comments with the NSSS owners groups, vendors, and licensees 
to ensure that the comments submitted by industry are of high quality 
and that they reflect a consensus industry perspective. However, the 
comment period provided in the August 10th Federal Register Notice is 
insufficient given the volume and breadth of material that requires a 
thorough technical review. Extending the comment period would provide 
the time necessary to fully assess the impact of the draft supplemental 
proposed rule and arrive at a set of comments that are of highest value 
to the NRC staff in considering this important rulemaking.
    In view of the NRC's desire to receive high quality comments from 
external stakeholders who would be directly affected by the 
supplemental proposed rule and recognizing the quantity of information 
to be analyzed and the

[[Page 48668]]

coordination efforts needed by and among those stakeholders, the 
comment period for the proposed rulemaking will be extended for all 
stakeholders for an additional 120 days. The comment period for the 
information collection aspects of this proposed rulemaking will be 
extended by 60 days. The NRC believes that these extensions will allow 
sufficient time for all stakeholders to develop and provide meaningful 
comments on the proposed rule.
    The comment submittal deadline for the proposed rule is extended 
from the original September 24, 2009, deadline to January 22, 2010, and 
the information collection analysis comment deadline is extended from 
the original September 9, 2009, deadline to November 9, 2009.


    Dated at Rockville, Maryland, this 18th day of September 2009.

    For the Nuclear Regulatory Commission.
Bruce S. Mallett,
Acting Executive Director for Operations.
[FR Doc. E9-23043 Filed 9-23-09; 8:45 am]
BILLING CODE 7590-01-P

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