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| issue date = 09/26/2008 | | issue date = 09/26/2008 | ||
| title = Acceptance Review Regarding the License Amendment Request to Transition to NFPA 805, Performance-Based Standard for Fire Protection for Light Water Reactor Generating Plants. | | title = Acceptance Review Regarding the License Amendment Request to Transition to NFPA 805, Performance-Based Standard for Fire Protection for Light Water Reactor Generating Plants. | ||
| author name = Boyce T | | author name = Boyce T | ||
| author affiliation = NRC/NRR/DORL/LPLII-2 | | author affiliation = NRC/NRR/DORL/LPLII-2 | ||
| addressee name = Burton C | | addressee name = Burton C | ||
| addressee affiliation = Carolina Power & Light Co | | addressee affiliation = Carolina Power & Light Co | ||
| docket = 05000400 | | docket = 05000400 | ||
Line 18: | Line 18: | ||
=Text= | =Text= | ||
{{#Wiki_filter:September 26, 2008 | {{#Wiki_filter:September 26, 2008 Chris L Burton, Vice President Shearon Harris Nuclear Power Plant Carolina Power & Light Company Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165 | ||
Chris L Burton, Vice President Shearon Harris Nuclear Power Plant Carolina Power & Light Company Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165 | |||
==SUBJECT:== | ==SUBJECT:== | ||
SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - ACCEPTANCE REVIEW REGARDING THE LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS (2001 EDITION) (TAC NO. MD8807) | SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - ACCEPTANCE REVIEW REGARDING THE LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS (2001 EDITION) (TAC NO. MD8807) | ||
==Dear Mr. Burton:== | ==Dear Mr. Burton:== | ||
By application dated May 29, 2008 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML081560639), Carolina Power and Light Company, now doing business as Progress Energy Carolinas, Inc., submitted a proposed amendment for the Shearon Harris Nuclear Power Plant, Unit 1 (HNP). The proposed amendment would enable HNP to adopt a new fire protection licensing basis which complies with the requirements in Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(a) and (c). Specifically, HNP would transition the fire protection program to one based on the National Fire Protection Association 805 (NFPA 805) Performance-Based Standard for Fire Protection For Light Water Reactor Generating Plants (2001 Edition). | By application dated May 29, 2008 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML081560639), Carolina Power and Light Company, now doing business as Progress Energy Carolinas, Inc., submitted a proposed amendment for the Shearon Harris Nuclear Power Plant, Unit 1 (HNP). The proposed amendment would enable HNP to adopt a new fire protection licensing basis which complies with the requirements in Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(a) and (c). Specifically, HNP would transition the fire protection program to one based on the National Fire Protection Association 805 (NFPA 805) Performance-Based Standard for Fire Protection For Light Water Reactor Generating Plants (2001 Edition). | ||
Consistent with 10 CFR 50.90, an amendment to the license (including the technical specifications) must fully describe the changes requested, and follow, as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations. | |||
Consistent with 10 CFR 50.90, an amendment to the license (including the technical specifications) must fully describe the changes requested, and follow, as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations. | The purpose of this letter is to provide the final results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this request. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed change. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant. | ||
The NRCs Fire Protection Branch (AFPB) and Probabilistic Risk Assessment (PRA) Licensing Branch (APLA) performed an acceptance review of the license amendment request (LAR) in accordance with Revision 0 of the Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-109, Acceptance Review Procedures (ADAMS Accession No. ML081200811). The staff subsequently determined that the licensee has not provided all information necessary to start and complete a comprehensive review of the LAR to transition HNP to NFPA-805. | |||
The purpose of this letter is to provide the final results of the U.S. Nuclear Regulatory Commission (NRC) | The NRCs staff review identified eight issues involving missing or incomplete information which present significant challenges to commencing and completing a comprehensive review of the LAR on an acceptable schedule. Three additional issues were identified that must be corrected. | ||
regarding the acceptability of the proposed change. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant. | |||
The | |||
The | |||
C. Burton Under the normal NRR acceptance review process, this licensing action would not be accepted. | |||
However, the staff concluded that since HNP is a NFPA 805 pilot plant, providing PEC with the option of providing an updated submittal within a reasonable time frame while the NRC staff continues its review of acceptable sections of the LAR is in the best interest of HNP, the NRC, the public, and non-pilot NFPA 805 licensees. Specifically, the NFPA 805 pilot process serves a dual purpose. In addition to assisting in the development of the LARs for the pilot plant licensees, the process also provides significant benefit to the NRC staff, the other NFPA 805 transitioning licensees, and the industry as a whole. As with any first time evolution, there are many lessons to be learned in both the development of NFPA 805 submittals and the associated NRC staff review of those submittals. These lessons learned are being factored into the regulatory infrastructure (Regulatory Guides, Standard Review Plan, Inspection Procedures, etc.). On this basis, the NRC has opted to invoke the rare exception provision of LIC-109 and accept for review a LAR which would not otherwise be acceptable for review. | |||
By invoking the rare exception provision of LIC-109 for HNP and allowing PEC to provide a supplemental submittal, the overall duration of the LAR review is extended. This effectively results in an extension of enforcement discretion for all noncompliances until the review is complete. Furthermore, this may result in an extension of enforcement discretion for noncompliances that rely on modifications whose schedule is impacted by the staffs approval of the licensees LAR. | |||
On August 14, 2008, a telephone conference was held with PEC to discuss the LAR issues identified by the NRC staff. As a result, PEC committed to provide the additional information to address each of the identified issues by November 15, 2008. | |||
Technical Acceptance Issues | Technical Acceptance Issues | ||
: 1. The submittal does not reflect the current as-built plant configuration, and it does not provide a detailed, proposed configuration at the completion of transition, including all proposed modifications (sufficient for risk analysis purposes). In many places throughout the submittal, the licensee makes statements that | : 1. The submittal does not reflect the current as-built plant configuration, and it does not provide a detailed, proposed configuration at the completion of transition, including all proposed modifications (sufficient for risk analysis purposes). In many places throughout the submittal, the licensee makes statements that predict compliance will be achieved. | ||
The licensee should provide a listing of all proposed modifications and procedure changes being implemented during (and following) transition as part of the new NFPA 805 licensing basis. | The final plant configuration has not been decided. The acceptability of the proposed modifications cannot be decided since the scope and configuration of the modifications has not been finalized. | ||
: 2. The | The licensee should provide a listing of all proposed modifications and procedure changes being implemented during (and following) transition as part of the new NFPA 805 licensing basis. | ||
The formal submittal, made under oath or affirmation, does not contain details or a summary of the risk basis for transition, the specific modifications proposed for transition, the specific deviations proposed to remain in place after transition, nor references to the | : 2. The licensees submittal is not clear in identifying the scope of the requested licensing action; specifically in identifying clearly the committed modifications and deviations from existing deterministic fire protection requirements. Although some of this information may be found in supporting calculations, it is not clearly identified in the calculations, and the calculations are not specifically referenced in the submittal, and therefore do not provide a basis to review the acceptability of the proposed LAR. | ||
The formal submittal, made under oath or affirmation, does not contain details or a summary of the risk basis for transition, the specific modifications proposed for transition, the specific deviations proposed to remain in place after transition, nor references to the | |||
calculations which may contain this detail. Since the calculations are not submitted under oath or affirmation (but rather simply to assist the NRC in its review), and are not referenced in the formal submittal, the staff is unable to ascertain what specific changes are requested, and cannot use the calculations as the basis for its safety evaluation. | C. Burton calculations which may contain this detail. Since the calculations are not submitted under oath or affirmation (but rather simply to assist the NRC in its review), and are not referenced in the formal submittal, the staff is unable to ascertain what specific changes are requested, and cannot use the calculations as the basis for its safety evaluation. | ||
The licensee should provide: | The licensee should provide: | ||
* A summary of the risk basis for transition, including the specific risk numbers needed to justify non-conformances and committed modifications. | * A summary of the risk basis for transition, including the specific risk numbers needed to justify non-conformances and committed modifications. | ||
* A reference to the supporting calculations so that they may be considered in developing the safety evaluation report. | * A reference to the supporting calculations so that they may be considered in developing the safety evaluation report. | ||
* A list of the non-conformances being addressed during transition, including a description of the disposition of each. | * A list of the non-conformances being addressed during transition, including a description of the disposition of each. | ||
: 3. The description of the current licensing basis contained in the Transition Report is limited to quoting the existing Fire Protection License Condition. An accurate, summary level description of the existing licensing basis is needed as a starting point for the evaluation of the transition process. Although much of this information is provided at a very high level of detail in the Transition Report tables, the endorsed industry guidance document (Nuclear Energy Institute (NEI) 04-02, | : 3. The description of the current licensing basis contained in the Transition Report is limited to quoting the existing Fire Protection License Condition. An accurate, summary level description of the existing licensing basis is needed as a starting point for the evaluation of the transition process. Although much of this information is provided at a very high level of detail in the Transition Report tables, the endorsed industry guidance document (Nuclear Energy Institute (NEI) 04-02, Guidance for Implementing A Risk-Informed, Performance-Based Fire Protection Program Under 10 CFR 50.48(c)) provides a summary description of the licensing basis in Appendix H, Section H.3, Template: | ||
Transition Report Outline. | Transition Report Outline. | ||
The licensee should provide a summary level description of the existing licensing basis, as described in NEI 04-02, Appendix H, Section H.3, Template: Transition Report Outline. 4. The HNP NFPA 805 LAR proposes to obtain NRC staff approval to accept non-conforming electrical raceway fire barrier systems (HEMYC and MT), Operator Manual Actions transitioning to Recovery Actions, and Multiple Spurious Operations. | The licensee should provide a summary level description of the existing licensing basis, as described in NEI 04-02, Appendix H, Section H.3, Template: Transition Report Outline. | ||
The | : 4. The HNP NFPA 805 LAR proposes to obtain NRC staff approval to accept non-conforming electrical raceway fire barrier systems (HEMYC and MT), Operator Manual Actions transitioning to Recovery Actions, and Multiple Spurious Operations. | ||
The licensees submittal and supporting calculations do not provide a sufficient basis to conclude that the risk-informed decisions proposed are acceptable. Specifically, the submittal does not provide a justification that the Fire PRA being used, nor does it demonstrate that the manner in which it is being used is of sufficient quality for the specific changes being made. Further, the licensees submittal only states that the change in risk will satisfy the guidance of Regulatory Guide (RG) 1.174 An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis, but the supporting calculations do not demonstrate this. | |||
Therefore, the licensee has not provided a risk-informed basis for the acceptability of the proposed changes. | Therefore, the licensee has not provided a risk-informed basis for the acceptability of the proposed changes. | ||
The licensee should provide: | The licensee should provide: | ||
* A risk-informed basis for the acceptability of the proposed changes, in sufficient detail to enable the NRC staff to decide whether the fire PRA or fire modeling is appropriately credited. | * A risk-informed basis for the acceptability of the proposed changes, in sufficient detail to enable the NRC staff to decide whether the fire PRA or fire modeling is appropriately credited. | ||
* A justification that the Fire PRA is of sufficient quality for the specific changes being made. | * A justification that the Fire PRA is of sufficient quality for the specific changes being made. | ||
C. Burton | |||
* A justification that the manner in which the Fire PRA is being used is appropriate for the risk-informed decisions being made. | * A justification that the manner in which the Fire PRA is being used is appropriate for the risk-informed decisions being made. | ||
* Calculations sufficient to conclude that with the plant configuration in its final, post-transition state, that the change in risk is acceptable. | * Calculations sufficient to conclude that with the plant configuration in its final, post-transition state, that the change in risk is acceptable. | ||
5 The submittal does not discuss the use of fire models acceptable to the NRC. There is no specific discussion of fire model verification and validation beyond a general statement that | 5 The submittal does not discuss the use of fire models acceptable to the NRC. There is no specific discussion of fire model verification and validation beyond a general statement that Calculational models and numerical methods used in support of compliance with 10 CFR 50.48(c) have been and will be verified and validated as required by Section 2.7.3.2 of NFPA 805. | ||
The licensee should provide a list of the fire models being used to support the transition, and an explanation of how the verification and validation requirements in NFPA 805 Section 2.7.3.2 are being met for each. | The licensee should provide a list of the fire models being used to support the transition, and an explanation of how the verification and validation requirements in NFPA 805 Section 2.7.3.2 are being met for each. | ||
: 6. NFPA 805 Section 4.2.4 states: | : 6. NFPA 805 Section 4.2.4 states: When the use of recovery actions has resulted in the use of this approach, the additional risk presented by their use shall be evaluated. The submittal does not provide the results of the evaluation of risk associated with the use of recovery actions required by NFPA 805 Section 4.2.4. The treatment of recovery action feasibility does not address Multiple Spurious Actuations (MSAs) and their potential impact on available time to implement recovery actions. | ||
The time available to implement recovery actions is directly dependent upon the effect of fire-induced damage to plant components and circuits. Some MSA combinations may cause plant conditions to change faster than previously analyzed in the | The time available to implement recovery actions is directly dependent upon the effect of fire-induced damage to plant components and circuits. Some MSA combinations may cause plant conditions to change faster than previously analyzed in the plants thermal-hydraulic analyses. The treatment of Operator Manual Actions transitioning to Recovery Actions provided in the LAR amounts to a general discussion of method, rather than a detailed demonstration of acceptability. | ||
than a detailed demonstration of acceptability. | |||
The licensee should provide: | The licensee should provide: | ||
* A list of the pre-transition operator manual actions (both approved and un-approved). | * A list of the pre-transition operator manual actions (both approved and un-approved). | ||
Line 78: | Line 69: | ||
* For any operator manual actions being carried forward as NFPA 805 recovery actions, the risk associated with their use. | * For any operator manual actions being carried forward as NFPA 805 recovery actions, the risk associated with their use. | ||
* For any operator manual actions being carried forward as NFPA 805 recovery actions, a detailed demonstration of acceptability, including feasibility. | * For any operator manual actions being carried forward as NFPA 805 recovery actions, a detailed demonstration of acceptability, including feasibility. | ||
* A description of how the impact of MSAs has been addressed with respect to feasibility (specifically, discuss whether the existing thermal-hydraulic analyses remain bounding for MSA scenarios, and if not, provide a description of the new thermal-hydraulic analyses and their associated impact on feasibility). | * A description of how the impact of MSAs has been addressed with respect to feasibility (specifically, discuss whether the existing thermal-hydraulic analyses remain bounding for MSA scenarios, and if not, provide a description of the new thermal-hydraulic analyses and their associated impact on feasibility). | ||
: 7. Large Early Release Frequency (LERF) calculations have not been performed. No justification was provided for the use of a ratio between internal event Core Damage Frequency (CDF) and LERF. | : 7. Large Early Release Frequency (LERF) calculations have not been performed. No justification was provided for the use of a ratio between internal event Core Damage Frequency (CDF) and LERF. | ||
The licensee should provide an analysis of LERF that is acceptable to the staff. There are currently two methods acceptable to the staff: | The licensee should provide an analysis of LERF that is acceptable to the staff. There are currently two methods acceptable to the staff: 1) perform a simplified analysis of | ||
LERF in accordance with NUREG/CR-6595, Revision 1, | C. Burton LERF in accordance with NUREG/CR-6595, Revision 1, An Approach for Estimating the Frequencies of Various Containment Failure Modes and Bypass Events, or 2) perform a complete Level II PRA. | ||
: 8. The discussion in the Transition Report regarding Fire PRA quality is insufficient to determine that staff/peer review findings have been adequately addressed. Specifically, there is no discussion of the extent of condition, or of what changes were made to address the staff-identified deficiencies. Also, there is insufficient justification regarding the fire PRA-identified elements of the American Nuclear Society (ANS) standard which are met at capability category I. In many cases, these | : 8. The discussion in the Transition Report regarding Fire PRA quality is insufficient to determine that staff/peer review findings have been adequately addressed. Specifically, there is no discussion of the extent of condition, or of what changes were made to address the staff-identified deficiencies. Also, there is insufficient justification regarding the fire PRA-identified elements of the American Nuclear Society (ANS) standard which are met at capability category I. In many cases, these are dispositioned as Category I is acceptable with no further basis. Determination and justification of the capability category necessary for supporting requirements on a specific risk-informed application is included in the PRA standard. | ||
The licensee should provide: | The licensee should provide: | ||
* A discussion regarding its review and evaluation of the extent of condition with respect to the staff/peer review findings. | * A discussion regarding its review and evaluation of the extent of condition with respect to the staff/peer review findings. | ||
* The disposition of each staff/peer review finding for both the Fire PRA and any of the Internal Events PRA findings that could affect the Fire PRA. | * The disposition of each staff/peer review finding for both the Fire PRA and any of the Internal Events PRA findings that could affect the Fire PRA. | ||
* Additional explanation or justification that capability category I is acceptable for all dispositions that originally were dispositioned as | * Additional explanation or justification that capability category I is acceptable for all dispositions that originally were dispositioned as Category I is acceptable. | ||
Additional Important Clarifications There were several statements in the LAR that mischaracterized the NRC staffs assessment of the HNP fire PRA quality. | |||
Additional Important Clarifications There were several statements in the LAR that mischaracterized the NRC | |||
: 9. Section 5.2.1 of the LAR states: | : 9. Section 5.2.1 of the LAR states: | ||
In support of this change, HNP has developed a fire Probabilistic Risk Assessment (PRA) which has been reviewed and been found acceptable by the NRC during the course of its observation of | In support of this change, HNP has developed a fire Probabilistic Risk Assessment (PRA) which has been reviewed and been found acceptable by the NRC during the course of its observation of HNPs transition to NFPA 805 as a Pilot Plant. | ||
Contrary to this assertion, the results of the NRC staff review of the HNP Fire PRA conducted in February 2008, as documented in the preliminary report (ADAMS Accession No. ML080650403), draw an opposite conclusion to the statement in the LAR: | Contrary to this assertion, the results of the NRC staff review of the HNP Fire PRA conducted in February 2008, as documented in the preliminary report (ADAMS Accession No. ML080650403), draw an opposite conclusion to the statement in the LAR: | ||
The NRC review team noted that the Harris fire PRA is not yet complete, some tasks have yet to be started, and many areas are still in draft form. At the time of the onsite portion of the review, the Harris fire PRA was more similar to a scoping analysis, rather than a completed fire PRA. The results produced by the fire PRA reviewed by the NRC staff were based upon a number of modeling conservatisms. The staff understands that further work is being done by PE | The NRC review team noted that the Harris fire PRA is not yet complete, some tasks have yet to be started, and many areas are still in draft form. At the time of the onsite portion of the review, the Harris fire PRA was more similar to a scoping analysis, rather than a completed fire PRA. The results produced by the fire PRA reviewed by the NRC staff were based upon a number of modeling conservatisms. The staff understands that further work is being done by PE | ||
[Progress Energy] to finalize the fire PRA and to reduce the excess conservatisms. | [Progress Energy] to finalize the fire PRA and to reduce the excess conservatisms. | ||
Because the fire PRA model available was a work-in-progress, the NRC staff review of the Harris baseline fire PRA cannot be regarded as sufficient for determination of technical adequacy to support risk-informed applications. | C. Burton Because the fire PRA model available was a work-in-progress, the NRC staff review of the Harris baseline fire PRA cannot be regarded as sufficient for determination of technical adequacy to support risk-informed applications. | ||
Additional review of the completed fire PRA will be necessary in the future. One approach would be a full-scope industry peer review of the completed HNP fire PRA model. | Additional review of the completed fire PRA will be necessary in the future. One approach would be a full-scope industry peer review of the completed HNP fire PRA model. | ||
The licensee should revise Section 5.2.1 of the LAR to more accurately reflect the status of the NRC staff review of the HNP Fire PRA. | The licensee should revise Section 5.2.1 of the LAR to more accurately reflect the status of the NRC staff review of the HNP Fire PRA. | ||
The NRC plans a follow-up review to determine the acceptability of the HNP Fire PRA prior to issuing the safety evaluation. | The NRC plans a follow-up review to determine the acceptability of the HNP Fire PRA prior to issuing the safety evaluation. | ||
: 10. Section 4.5.1.2 of the LAR states: | : 10. Section 4.5.1.2 of the LAR states: | ||
In February 2008, as part of the NRC fire PRA staff review, the NRC staff reviewed the resolution of F & Os [facts and observations] from the 2002 NEI-00-02 peer review, the 2006 gap assessment review, and the subsequent 2007 Focused Peer Review. The NRC staff had no findings from that review. | In February 2008, as part of the NRC fire PRA staff review, the NRC staff reviewed the resolution of F & Os [facts and observations] from the 2002 NEI-00-02 peer review, the 2006 gap assessment review, and the subsequent 2007 Focused Peer Review. The NRC staff had no findings from that review. | ||
The second sentence could be misconstrued to infer that the NRC | The second sentence could be misconstrued to infer that the NRC staffs lack of findings equates to a favorable assessment of the internal events PRA model. The NRC staff did not perform a review of the HNP internal events PRA model; neither did the NRC staff judge the appropriateness of the resolution of the facts and observations (F&Os) from the internal events PRA model peer review. | ||
The scope of the NRC staff review with respect to the internal events model was provided to PEC in the enclosure to the letter dated January 9, 2008, Shearon Harris Nuclear Power Plant, Unit 1 - Review of the Fire Probabilistic Risk Assessment Model To Support Implementation of National Fire Protection Association (NFPA) Standard NFPA-805, Performance-Based Standard For Fire Protection For Light Water Reactor Electric Generating Plants, as Allowed Under Title 10 of the Code Of Federal Regulations, Paragraph 50.48(c) (TAC No. MC5630), (ADAMS Accession No. ML080070531). In Section II, Review Scope, it states: | |||
The scope of the NRC staff review with respect to the internal events model was provided to PEC in the enclosure to the letter dated January 9, 2008, | Prior to performing the initial Fire Probabilistic Risk Assessment (FPRA) staff review, the staff review team should verify the Internal Events PRA has been reviewed against Part 2 of ASME/ANS RA-S-20071. The results of the Internal Events PRA peer review should be reviewed as a part of the FPRA staff review. | ||
Prior to performing the | |||
This review SHALL be used in support of the determination for the Capability Category for Supporting Requirements (SRs) above referencing the requirements of Part 2 of ASME/ANS RA-S-2007. | This review SHALL be used in support of the determination for the Capability Category for Supporting Requirements (SRs) above referencing the requirements of Part 2 of ASME/ANS RA-S-2007. | ||
The NRC staff did not review the internal events PRA model. The NRC reviewed | The NRC staff did not review the internal events PRA model. The NRC reviewed 1 | ||
American Society of Mechanical Engineers (ASME)/American Nuclear Society (ANS) combined PRA Standard, ASME/ANS RA-S-2007, Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment for Nuclear Power Plant Application, (draft) (PRA Standard) | |||
C. Burton unresolved findings (F&Os) that resulted from industry peer reviews and the HNP gap analysis related to the internal events PRA model. | |||
The licensee should revise the discussion in the Transition Report with regard to the NRC staff review of the Internal Events PRA, Internal Event PRA peer reviews, and the staffs findings. | |||
: 11. Section 4.5.1.2 of the LAR states:. | |||
At the same time, the NRC staff also reviewed the fire PRA in order to provide feedback on the progress to date of the HNP fire PRA development. | |||
The purpose of the NRC staffs review in February 2008, was not to provide feedback on the progress to date. The intent was for the NRC staff to assess a completed fire PRA model against the fire PRA standard. However, the fire PRA was not complete at the time the review was scheduled. In light of the severe time constraints, the NRC staff agreed that it was best to review what was available on the scheduled date. Analyses that were not completed by the review date can be identified from the results of the staff review, but there was no attempt by the staff to assess or measure PECs progress on completing the HNP Fire PRA at the time of the review. | |||
The licensee should revise Section 4.5.1.2 of the Transition Report to reflect the purpose of the NRC staff review. | |||
Conclusion The eight identified Technical Acceptance issues listed above present significant challenges to completing a comprehensive review of the LAR in terms of regulatory requirements and the protection of public health and safety. The staff also identified three issues that mischaracterized the NRC staff review of the HNP Fire PRA. However, since HNP is an NFPA 805 pilot plant, the NRC staff is utilizing the rare exception provision of LIC-109, recommending that the submittal be accepted in the best interest of HNP, the NRC, non-pilot NFPA 805 licensees, and the public. Accepting the submittal is to the benefit of all concerned in order to capture the lessons learned from the pilot process and disseminate them on an expedited basis to the various stakeholders. contains staff comments and observations (review checklist) on the HNP NFPA 805 LAR, which have been previously discussed with the licensee. | |||
C. Burton PEC has agreed to provide the additional information to address each of the identified issues by November 15, 2008, which supports a timely review of the LAR. This will enable the NRC staff to begin its detailed technical review. If additional information is needed for the staff to complete its technical review, you will be advised by separate correspondence. Should you have any questions regarding this review, please contact Marlayna Vaaler at (301) 415-3178. | |||
Sincerely, | |||
/RA/ | |||
Thomas H. Boyce, Chief Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-400 cc: See next page | |||
ML082701158 NRR-106 OFFICE LPL2-2/PM LPL2-2/LA DRA/DD LPL2-2/BC NAME MVaaler CSola MCunningham TBoyce DATE 09/23/08 09/26/08 09/05/2008 09/26/2008 | |||
*by memo dated Mr. Chris L. Burton Shearon Harris Nuclear Power Plant, Carolina Power & Light Company Unit No. 1 cc: | |||
Mr. Kelvin Henderson Mr. Robert P. Gruber Plant General Manager Executive Director Shearon Harris Nuclear Power Plant Public Staff NCUC Progress Energy Carolinas, Inc. 4326 Mail Service Center Post Office Box 165, Mail Zone 3 Raleigh, North Carolina 27699-4326 New Hill, North Carolina 27562-0165 Ms. Margaret A. Force Director of Site Operations Assistant Attorney General Shearon Harris Nuclear Power Plant State of North Carolina Progress Energy Carolinas, Inc. Post Office Box 629 Post Office Box 165, Mail Zone 1 Raleigh, North Carolina 27602 New Hill, North Carolina 27562-0165 Mr. Tony Gurley, Chair Mr. David H. Corlett, Supervisor Board of County Commissioners Licensing/Regulatory Programs of Wake County Shearon Harris Nuclear Power Plant Post Office Box 550 Progress Energy Carolinas, Inc. Raleigh, North Carolina 27602 Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165 Mr. Carl Thompson, Chair Board of County Commissioners Ms. Kimberly A. Harshaw, Manager of Chatham County Support Services Post Office Box 87 Shearon Harris Nuclear Power Plant Pittsboro, North Carolina 27312 Progress Energy Carolinas, Inc. | |||
Post Office Box 165, Mail Zone 1 Mr. John H. ONeill, Jr. | |||
New Hill, North Carolina 27562-0165 Pillsbury Winthrop Shaw Pittman, LLP 2300 N Street NW. | |||
Resident Inspector / Harris NPS Washington, DC 20037-1128 c/o U. S. Nuclear Regulatory Commission 5421 Shearon Harris Road Mr. John D. Runkle New Hill, North Carolina 27562-9998 Attorney at Law Post Office Box 3793 Mr. J. Paul Fulford Chapel Hill, North Carolina 27515-3793 Manager, Performance Evaluation and Regulatory Affairs PEB 5 Mr. Jim Warren Progress Energy Carolinas, Inc. NC Waste Awareness & Reduction Network Post Office Box 1551 Post Office Box 61051 Raleigh, North Carolina 27602-1551 Durham, North Carolina 27715-1051 Mr. David T. Conley Chairman of the North Carolina Associate General Counsel II - Utilities Commission Legal Department Post Office Box 29510 Progress Energy Service Company, LLC Raleigh, North Carolina 27626-0510 Post Office Box 1551 Raleigh, North Carolina 27602-1551 Public Service Commission State of South Carolina Ms. Beverly Hall, Section Chief Post Office Drawer 11649 Division of Radiation Protection Columbia, South Carolina 29211 N.C. Department of Environment and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 | |||
REVIEW CHECKLIST Sufficient Attribute Source for Comments Review? | |||
Review the Licensees submittal and verify that it includes an RG 1.205 No This information is not readily retrievable from the evaluation of the risk impact associated with major issues such Supporting Material (FSAs). A summary of this as the operator manual actions, Hemyc, and circuit analysis of information should be provided in either the LAR or the possible multiple spurious actuations (either quantitative or Transition Report. | |||
qualitative) as appropriate. | |||
Review the Transition Report, if one is included in the Licensees NEI 04-02 Yes Transition Report is provided as Enclosure 3 to LAR submittal, to verify that it meets the minimum content as defined RG 1.205 Letter. Note: Transition Report does not include in NEI 04-02 Sections 3.4, 4.6.2, and RG 1.205 Administration Section Feed and Bleed:10 CFR 50.48(c)(2)(iii) specifically notes that 10CFR50.48(c)(iii) Yes Includes a declaration that Feed and Bleed is not sole use of feed-and-bleed as the sole fire-protected safe shutdown Safe Shutdown protected path. Included in Table 5-3 path for maintaining reactor coolant inventory, pressure control, of Transition Report and decay heat removal capability is not permitted for pressurized-water reactors (PWRs). This is noted in section 2.2 of NEI 04-02. Verify that a statement to this effect as well as a description of any dependence on feed-and-bleed in the fire protection program is included in the LAR. | |||
Existing Cables: [10CFR50.48(c)(2)(v)] A LAR is acceptable if 10CFR50.48(c)(v) Yes Includes a declaration that cables used at Harris meet the licensee states that the cable installed in the plant meets a flame propagation tests acceptable to NRC. Included flame propagation test that is acceptable to the AHJ. FAQ 06- in Table 5-3 of Transition Report. | |||
0022 documents flame propagation tests that are acceptable to the NRC. | |||
Water Supply and Distribution: [10CFR50.48(c)(2)(vi)]: This 10CFR50.48(c)(2)(vi) Yes Includes a declaration that water supply and paragraph provides that a provisional manual fire-fighting distribution has been previously approved by NRC. | |||
standpipe/hose station system may not be used in place of Provided in Table 5-3 of Transition Report. | |||
seismically qualified standpipes and hose stations unless previously approved in the licensing basis. Licensees who wish to use the italicized exception in Section 3.6.4 of NFPA 805 must submit a request for a license amendment in accordance with paragraph (c)(2)(vii). However, because the NRC considers seismically qualified standpipes and hose stations of such importance, the NRC believes that licensees who wish to use the exception in Section 3.6.4 of NFPA 805 via a license amendment may have difficulty satisfying the three criteria in paragraph (c)(2)(vii). | |||
ENCLOSURE Page 1 of 14 | |||
REVIEW CHECKLIST If the licensee proposes to implement modifications as part of RG 1.205 No Modifications have been assumed in calculations the transition to a risk-informed, performance-based fire provided in supporting material, but only summary protection program, verify that for each modification proposed, description and no justification has been provided with the LAR contains a description of the modification, a schedule respect to risk. Section 4.8.3 is too general to provide for implementation of the modification and a risk-informed a justification of risk related to non-compliances. | |||
justification, including compensatory actions, for the acceptability In addition, Section 4.5.4 states that upon completion of the schedule for the modification. Regulatory Issue Summary of modifications, the total change in risk associated 2005-07, Compensatory Measures to Satisfy the Fire Protection with the transition to NFPA 805 will be consistent with Program Requirements, provides guidance on compensatory the acceptance guidelines in Regulatory Guide 1.174. | |||
measures acceptable to the NRC. | |||
Section 4.6.1 of NEI 04-02 states that the LAR should include an NEI 04-02 No Insufficient justification has been provided beyond a updated transition schedule. The licensee should provide not statement that compensatory measures have been only a transition schedule, but also a risk-informed justification applied to each non-compliance. | |||
for the timing of the schedule, demonstrating that the transition will be completed in a timely enough manner to avoid unacceptable risk due existing non-compliances with the current fire protection program that will not be resolved until transition is complete. | |||
Verify that the Licensees submittal package documents the RG 1.205 Yes Included as Attachment M of Transition Report plant's risk-informed fire protection license condition. One acceptable approach would be to use the standard license condition from RG 1.205, if necessary supplemented by FAQ 06-0008. | |||
Verify that all prior fire protection SERs and commitments are 10CFR50.48(c) Yes This attribute has been addressed in a variety of superseded by the issuance of the new license condition. RG 1.205 places; primarily in the Attachment A (NEI 04-02, Review the Licensees submittal package and verify that it NEI 04-02 Table B-1), Attachment B (NEI 04-02, Table B-2), | |||
includes a listing of all SER sections that contain fire protection Attachment C (NEI 04-02, Table B-3) and Attachment commitments. K of the Transition Report. | |||
Verify that the Licensees submittal package includes a list of all NEI 04-02 Yes This attribute has been addressed in a variety of submittals made to support those SERS. places; primarily in the Attachment A (NEI 04-02, Table B-1), Attachment B (NEI 04-02, Table B-2), | |||
Attachment C (NEI 04-02, Table B-3) and Attachment K of the Transition Report. | |||
Verify that the Licensees submittal package includes a NEI 04-02 No Description of CLB in Transition Report Section 2.0, discussion of the existing approved fire protection program so it Overview of Existing Fire Protection Program is can be superseded by the new license conditions. Verify that the limited to quoting the existing Fire Protection License Licensees submittal package includes all prior approvals, Condition (No details have been provided with respect documented in the transition tables (B-1, B-2, and B-3) with to Appendix R, NUREG 0800, BTP Appendix A, etc.) | |||
enough information to be stand-alone and therefore supersede the previous documentations. | |||
ENCLOSURE Page 2 of 14 | |||
REVIEW CHECKLIST Verify that the Licensees submittal package documents how the NEI 04-02 Yes Included as Attachment M of Transition Report plant meets the process used to identify any other license conditions for fire protection In accordance with 10 CFR 50.48(c)(3)(i), the LAR should 10CFR50.48(c)(3)(i) Yes Included as Attachment M of Transition Report contain a list of any other license conditions that need to be revised or suspended, the necessary revisions to these other license conditions, and an explanation of why these revisions are adequate to accomplish the plants adoption of NFPA 805. | |||
Verify that the Licensees submittal package documents not only 10CFR50.48(c) Yes Included as Attachment M of Transition Report identify the other license conditions, but also describe the process used to identify the other license conditions. | |||
Verify that the Licensees submittal package discusses which 10CFR50.48(c) Yes Included as Attachment N of Transition Report Technical Specifications needing modification were identified, NEI 04-02 and the process used for their identification. Verify that the package includes: | |||
All administrative/audit technical specifications needing to be NEI 04-02 Yes Included as Attachment N of Transition Report revoked Equipment technical specifications to be revised. Ensure they 10CFR50.48(c) Yes Included as Attachment N of Transition Report are consistent with 10 CFR 50.48(c) | |||
Revised technical specification sections and their associated 10CFR50.48(c) Yes Included as Attachment N of Transition Report bases NEI 04-02 Verify that the Licensees submittal package documents how the 10CFR50.48(c) Yes Included as Attachment M of Transition Report plant meets the process used to identify any other license NEI 04-02 conditions for fire protection Verify that the Licensees submittal package documents not only Yes Included as Attachment O of Transition Report identify the orders and exemptions, but also describe the process used to identify the orders and exemptions. | |||
Verify that the Licensees submittal package documents include 10CFR50.91 Yes Included as Attachment U of Transition Report a statement on No Significant Hazards Consideration, in 10CFR50.92 accordance with 10 CFR 50.91 and 10 CFR 50.92. Appendix H NEI 04-02, Appendix H of NEI 04-02 provides one acceptable statement to the NRC staff that shows that the Licensees submittal package, including the LAR meets the criteria for No Significant Hazards Consideration. | |||
Verify that the Licensees submittal package documents includes 10CFR50.22(b) and (c) Yes Included as Attachment V of Transition Report a statement on Environmental Considerations in accordance NEI 04-02, Appendix H with 10 CFR 51.22(b) and (c). Appendix H of NEI 04-02 provides one example of an acceptable statement. | |||
ENCLOSURE Page 3 of 14 | |||
REVIEW CHECKLIST Verify that the Licensees submittal package documents how the 10CFR50.48(c)(3)(i) Yes Included as Attachment R of Transition Report plant meets the requirements of 10 CFR 50.48(c)(3)(i), which requires licensees include discussion of any changes Updated Final Safety Analysis Report (UFSAR). | |||
Verify that the Licensees submittal package documents include NEI 04-02, Section Yes Included as Attachment R of Transition Report discussion of any changes to UFSAR necessitated by the license 4.6.1 amendment and a statement that the changes will be made in accordance with 10 CFR 50.71(e) As per NEI 04-02 Section 4.6.,1. Furthermore, verify the adequacy of the commitment made by the licensee to make changes to the UFSAR. | |||
NRC established the FAQ process in accordance with RIS 2007 RIS 2007-19 Yes Included as Attachment H of Transition Report 19 - Process For Communicating Clarifications of Staff Positions Provided in Regulatory Guide 1.205 Concerning Issues Identified During the Pilot Application of National Fire Protection Association Standard 805 to clarify issues encountered during the pilots transition. Therefore, licensees may rely on FAQ resolutions to comply with 10 CFR 50.48(c). Relying on FAQs is acceptable to the NRC staff within the constraints defined in the FAQs. | |||
Verify that the Licensees submittal package includes, a Fire RG 1.205 Yes Included as Attachment M of Transition Report Protection License Condition that provides risk acceptance criteria for risk-informed, performance-based changes to the fire protection program. To be considered acceptable, the license condition must require the licensee to implement and maintain in effect all provisions of the approved fire protection program, with specific references to the NFPA 805 transition license submittal and subsequent Safety Evaluation Report. The license condition must also provide acceptance criteria for self approved and NRC approved changes. | |||
Use of Performance-Based Methods to make changes to 10CFR50.48(c)(2)(vii) Yes Included as Attachment P of Transition Report Fundamental Fire Protection Program and Design Elements must be requested through the submittal of a LAR. Review of LARs submitted in accordance with 10 CFR 50.48(c)(2)(vii) will focus on review of the technical aspects of the approach or method proposed by the licensee compared to the requirement(s) in Chapter 3 and the performance goals, objectives and criteria of NFPA 805. | |||
ENCLOSURE Page 4 of 14 | |||
NFPA 805 | REVIEW CHECKLIST 10 CFR 50.48(c) allows licensees to request approval to use 10CFR50.48(c)(4) Yes Included as Attachment Q of Transition Report risk-informed or performance-based alternatives to compliance with NFPA 805. A licensee may submit a LAR to use risk-informed or performance-based alternatives to compliance with NFPA 805. Verify the adequacy of methods and licensees evaluation and conclusions with regard to meeting the margins of safety and defense-in-depth criteria of NFPA 805. | ||
Licensees may use performance-based Fire Protection RG 1.205 Yes Included as Attachment J of Transition Report Engineering Evaluations to demonstrate compliance to NEI 04-02 Fundamental Fire Protection Program and Design Elements during transition. | |||
Verify that the Licensees submittal package documents a RG 1.205, C.3.3 Yes Included as Attachment F of Transition Report summary of the MSO methodology used. The methodology used NEI 04-02, B.2.1.3 should be consistent with and implement the lessons learned from pilot plant and preceding non-pilot plant activities as reflected in the changes from the FAQ process, as applicable to the applicants particular situation. It should contain sufficient information concerning methods, tools, and acceptance criteria used to enable the staff to determine the acceptability of the licensees methodology. The analysis should generally be performed and arranged by Fire Areas, although in some cases an alternative spatial approach may prove to be more practical. If an expert panel process was used, it should be documented with results clearly presented. The MSO analysis should generally conform with requirements found in NEI 04-02 B.2.1.3 and RG 1.205, C.3.3 ENCLOSURE Page 5 of 14 | |||
REVIEW CHECKLIST Verify that the Licensees methodology includes a feasibility NFPA 805, Section No Description of methodology does not meet this level of determination, including an evaluation of egress and task 4.2.4 detail (discussing egress and task lighting). Does not lighting. An evaluation of the risk impact associated with the include discussion of methodology to correlate operator manual actions (either qualitative or quantitative), must Thermal-Hydraulic Analyses with Multiple Spurious be described and included as appropriate. Quantitative risk Actuation scenarios to determine allowable recovery calculations should be in accordance with Section 4.2.4.2 of action timelines. | |||
NFPA 805 (a bounding calculation approach is acceptable). The description of the transition of OMA to recovery action should Risk of credited recovery actions has not been include: 1) whether the operator manual actions are currently adequately addressed. | |||
allowed or were previously reviewed and approved by the NRCs Office of Nuclear Reactor Regulation (NRR), and 2) reference to documentation that demonstrates prior review and approval by the NRC. Operator manual actions that are currently allowed and/or have been previously reviewed and approved by the NRC (as documented in an approved exemption/deviation) can be transitioned without a change evaluation (the risk associated with their use must still be evaluated). | |||
Verify that the Licensees submittal package clearly documents RG 1.205 Yes Included in Attachment A (NEI 04-02, Table B-2) and previously approved alternatives to the fundamental fire NEI 04-02 Attachment K of Transition Report protection program requirements of NFPA 805 Chapter 3 that are being carried forward to the NFPA 805 Licensing Basis. | |||
Verify that the Licensees submittal package documents all RG 1.205 Yes Included in Attachment A (NEI 04-02, Table B-2) and previously approved variations, and the documentation which NEI 04-02 Attachment K of Transition Report demonstrates prior NRC approval of an alternative to Chapter 3 requirements, as well as approval of noncompliance with existing license regulatory requirements, is referenced. Any items for which previous NRC approval is unclear should be listed and evaluated via a plant change analysis. | |||
If Existing Engineering Equivalency Evaluations are used, the NEI 04-02 Yes Section 4.2.2.2 and Attachment J of Transition Report licensee must affirm in the LAR that they of appropriate quality, or, provide documentation as part of the LAR for staff review. | |||
Verify that the LAR has described any current variances with RG 1.205 No Contained in Supporting Material (FSAs); No risk deterministic fire protection requirements that will be carried over numbers have been supplied in either the LAR or the to the NFPA 805 performance-based licensing basis. The total Transition Report. | |||
risk increase associated with all fire protection program non-compliances (based on current deterministic fire protection program regulations) that the licensee does not intend to bring into compliance and the total risk change associated with plant changes planned for the transition to NFPA 805 should be estimated and reported. | |||
ENCLOSURE Page 6 of 14 | |||
REVIEW CHECKLIST Verify that the Licensees submittal package documents a NEI 04-02 Yes Described in Section 4.6 of the Transition Report performance monitoring program, including a description and RG 1.174 rationale for its implementation and the performance monitoring strategy for the proposed licensing basis change in accordance with RG 1.174. | |||
Verify that the Licensees submittal package states that the Fire RG 1.174 No Submittal does not go to this level of detail with respect PRA peer review contains the following elements: a) a review of RG 1.205 to the staff review or the subsequent peer review. | |||
the methods used in the PRA and a determination of whether the application of those methods was done correctly in the Fire PRA baseline model, b) a comparison of the PRA models against the plant design and procedures to validate that they reflect the as-built and as operated plant, 3) a review of key assumptions to determine if they are appropriate and to assess their impact on the PRA results. | |||
Verify that the Licensees submittal package documents: 1) a RG 1.174 No The licensee's basis for the technical adequacy of the description of high level findings, 2) details of questions arising RG 1.205 fire PRA model is discussed in Section 4.5.1. There during the peer review and any findings and their implemented or are several omissions which are directly relevant to the proposed (with commitment) resolution, 3) the findings related to staff's ability to conduct its licensing review: | |||
the pedigree of the model and their relationship to a. The staff conducted a review of the draft fire current/planned plant configuration. As needed, during the Post- PRA model and identified deficiencies - these are LAR Site Audit, verify that the licensee has properly simply dispositioned in Table 4-3 as "Closed, per dispositioned findings that affect the risk-informed changes. industry peer review." There is no discussion of the extent of condition, nor of what changes were made to address the staff-identified deficiencies. | |||
: b. The staff and industry peer review of the fire PRA identified elements of the ANS standard which are met at capability category I - in many cases, these are dispositioned in Table 4-5 as "Cat. I is acceptable" with no further basis Verify that the Licensees submittal package documents how the FAQ 06-0019 Yes Included as Attachment I of Transition Report plant defines the term "Power Block" The definition should be compatible with the one given in the glossary of NFPA 805 defines Power Block as1.6.46* Power Block. Structures that have equipment required for nuclear plant operations. The interpretation of this term has significant implications on the licensing basis of the licensee. Therefore, the licensees are required to describe the boundaries of the power block as a part of their submittal to the NRC (One acceptable approach of interpreting the definition acceptable to the staff is provided in FAQ resolution 06-19 ML070510365 ENCLOSURE Page 7 of 14 | |||
REVIEW CHECKLIST The Fundamental Fire Protection Program and Design Elements Yes Yes Described in Section 4.1 and included as Attachment are established in Chapter 3 of NFPA 805. Section 4.3.1 of A (NEI 04-02, Table B-1) of Transition Report NEI 04-02 sets out a systematic process for determining the extent to which the current licensing basis meets these criteria and for identifying the fire protection program changes that would be necessary for complete compliance. | |||
The Methodology to be used to implement a performance-based NFPA 805 Chapter 2 Yes Described in Section 4.2.1 and included as Attachment Fire Protection Program is provided in NFPA 805 Chapter 2. RG 1.205 B (NEI 04-02, Table B-2) of Transition Report Section 4.3.2 sets out a systematic process for evaluating the NEI 00-01, Rev. 1 existing post-fire safe shutdown analysis against the methodology requirements provided in NFPA 805 Chapter 2. | |||
Regulatory Guide 1.205 endorses the deterministic safe shutdown analysis methodology provided in Chapter 3 of NEI 00-01, Revision 1. | |||
The Nuclear Safety Performance Criteria are established in NFPA 805, Chapter 4 Yes Described in Section 4.2.2 and included in Attachment NFPA 805, Section 1.5. NFPA 805, Chapter 4, provides the NEI 04-02 C (NEI 04-02, Table B-3) of Transition Report methodology to determine the fire protection systems and features required to achieve the performance criteria outlined in Section 1.5. Section 4.3.2 of NEI 04 02 sets out a systematic process for determining the extent to which the current licensing basis meets these criteria and for identifying the fire protection program changes that would be necessary for complete compliance. Verify that the Licensees submittal package documents the methodology for performing the Fire Area-by-Fire Area Transition of its Fire Protection Program. NEI 04 02 Table B 3 is one acceptable approach (additional guidance is contained in FAQ 07 0039, Lessons Learned - NEI 04 02 B 2 and B 3 Tables). | |||
ENCLOSURE Page 8 of 14 | |||
REVIEW CHECKLIST Review the Licensees treatment of non-power operations, NEI 04-02, Section Yes Described in Section 4.3 and included in Attachment D considering the following: 4.3.3 (NEI 04-02, Table F-1) of Transition Report Licensees are not required to prepare a complete PRA to model non-power operations; instead they can use a simplified approach of maximizing outage safety by focusing on the availability of systems that provide and support key safety functions as well as on measures that can reduce both the likelihood and consequences of adverse events. | |||
Licensees are not required to prepare a complete PRA to model non-power operations; instead they can use a simplified approach of maximizing outage safety by focusing on the availability of systems that provide and support key safety functions as well as on measures that can reduce both the likelihood and consequences of adverse events. | |||
RG 1.205 endorses the approach documented in NEI 04 02. | RG 1.205 endorses the approach documented in NEI 04 02. | ||
Section 4.3.3 of NEI 04 02, Revision 1,states that the nuclear safety goal of NFPA 805 requires evaluation of the effects of a fire | Section 4.3.3 of NEI 04 02, Revision 1,states that the nuclear safety goal of NFPA 805 requires evaluation of the effects of a fire during any operational mode and plant configuration. NEI 04 02 Section 4.3.3 further goes on to provide a strategy that demonstrate[s] that the nuclear safety performance criteria are met for High(er) Risk Evolutions (HRE) (HREs as defined by NUMARC 91-06) during non-power operational modes Review the Licensees submittal package to verify that the licensee demonstrates that the nuclear safety performance criteria are met during Higher Risk Evolutions. To accomplish this objective, verify that the licensee has documented the following tasks using NEI 04-02, Table F-1 and the additional guidance provided in FAQ 07-0040: | ||
Review the | |||
* Review of existing plant outage processes (outage management and outage risk assessments) to determine equipment relied upon to provide Key Safety Functions (KSF) including support functions during the required POSs. | * Review of existing plant outage processes (outage management and outage risk assessments) to determine equipment relied upon to provide Key Safety Functions (KSF) including support functions during the required POSs. | ||
* Comparison of the equipment credited for achieving these KSFs against the equipment credited for nuclear safety. | * Comparison of the equipment credited for achieving these KSFs against the equipment credited for nuclear safety. | ||
* For those components not already credited (or credited in a different way e.g., on versus off, open versus closed, etc.) analysis of the circuits in accordance with the nuclear safety methodology. | * For those components not already credited (or credited in a different way e.g., on versus off, open versus closed, etc.) analysis of the circuits in accordance with the nuclear safety methodology. | ||
* Identification of locations where 1) fires may cause damage to the equipment (and cabling) credited above, or 2) recovery actions credited for the KSF are performed | * Identification of locations where 1) fires may cause damage to the equipment (and cabling) credited above, or 2) recovery actions credited for the KSF are performed | ||
* Identification of fire areas where a single fire may damage all the credited paths for a KSF. | * Identification of fire areas where a single fire may damage all the credited paths for a KSF. | ||
ENCLOSURE Page 9 of 14 | |||
REVIEW CHECKLIST | REVIEW CHECKLIST | ||
* For the above-mentioned areas the licensee may consider combinations of the following options to reduce fire risk depending upon the significance of the potential damage: | |||
o Prohibition or limitation of hot work in fire areas during periods of increased vulnerability o o Verification of operable detection and /or suppression in the vulnerable areas. | |||
o Prohibition or limitation of combustible materials in fire areas during periods of increased vulnerability o Provision of additional fire patrols at periodic intervals or other appropriate compensatory measures (such as surveillance cameras) during increased vulnerability o Use of recovery actions to mitigate potential losses of key safety functions. | |||
o Identification and monitoring in-situ ignition sources for fire precursors (e.g., equipment temperatures). | |||
Verify that the Licensees submittal package documents that 10CFR50.48(c)(3)(i) Yes Described in Section 4.4 and included in Attachment E radiation release to any unrestricted area due to the direct NEI 04-02 Appendices (NEI 04-02, Table G-1) of Transition Report effects of fire protection activities (but not involving fuel damage) H&G remain as low as reasonable achievable, not to exceed 10 CFR Part 20 limits. 10 CFR 50.48(c)(3)(i) requires licensees transitioning to NFPA 805 satisfy performance goals, objectives, and criteria provided in NFPA 805. Sections 1.3.2, 1.4.2, and 1.5.2 of NFPA 805 provide goals, performance objectives, and performance criteria associated with this regulatory requirement, respectively. Section 4.3 of Appendix H to NEI 04 02 provides one acceptable approach to documenting information that must be provided to the NRC in the LAR for staff evaluation. Appendix G of NEI 04 02 provides evaluations which the reviewer can consult as part of this review. | |||
Verify that the licensee has created a document that includes fire NEI 04-02 Yes Discussed in Section 4.7 of Transition Report hazards identification and nuclear safety capability assessment, on a fire area basis, for all fire areas that could affect the nuclear safety or radioactive release performance criteria defined in NFPA 805 Chapter 1. | |||
ENCLOSURE Page 10 of 14 | |||
REVIEW CHECKLIST Verify that the licensee has stated in the LAR that each analysis, NFPA 805, Section Yes Discussed in Section 4.7.3 of Transition Report calculation, or evaluation performed was independently 2.7.3.1 reviewed. | |||
- | Verify that the LAR has identified acceptable draft or final RG 1.200 Yes Discussed in Section 4.5.2 of Transition Report standards as well as draft or final regulatory guides (or similar regulatory guidance) that served as a basis for addressing non-compliances through a fire PRA. | ||
Verify that the LAR has identified acceptable draft or final PRA RG 1.200 No LAR does not adequately address Fire PRA quality standards used to determine that the fire PRA is of sufficient technical quality to support addressing non-compliances during transition to NFPA 805. | |||
Verify that licensee has submitted documentation for staff RG 1.200 No Staff Review/Peer Review Findings/F&Os have not review, in accordance with the guidance outlined in Section 4.2 been fully addressed in the submittal. There is no of Regulatory Guide 1.200, for NRC review as they apply to discussion of the extent of condition, or of what NFPA 805 LARs. For example, the non-pilot plants must provide changes were made to address the staff-identified all Significant Facts & Observations (Findings) from the peer deficiencies. | |||
review(s) conducted for the Fire PRA, their resolution (or plan for resolution, with schedule and commitments) and a list of all The staff and industry peer review of the fire PRA Significant Facts and Observations (F&Os) from the internal identified elements of the ANS standard which are met events PRA peer reviews, (including supplemental or focused- at capability category I - in many cases, these are scope reviews) that have the potential to impact the Fire PRA, dispositioned in Table 4-5 as "Cat. I is acceptable" with and their resolutions The submittal shall also include significant no further basis. | |||
findings from assessments against the endorsed PRA Quality Standards and their resolutions, if the peer reviews were not conducted in conformance with the endorsed standards and RG 1.200. | |||
Verify that the LAR provides information about the processes NFPA 805, Section Yes Discussed in Section 4.7 of Transition Report that the licensee has established in order to ensure that PRA 2.7.1.1 and fire modeling calculations in support of changes that it may choose to implement after transitioning to the NFPA 805 licensing basis remain valid. | |||
For each item of non-compliance that is carried forward to NFPA 805, Section No Modifications credited in the LAR are not sufficient to NFPA805 licensing basis as a risk-informed, performance-based 2.4.4.1 bring risk down to acceptable levels. Modifications yet change, verify that the licensee has provided the difference in RG 1.205 to be postulated have not been integrated into the CDF and LERF for the plant, with and without the item being in calculations so that they reflect accurate CDF and compliance. LERF values. | |||
ENCLOSURE Page 11 of 14 | |||
REVIEW CHECKLIST For each item of non-compliance that is carried forward to NFPA 805 Section Yes Discussed in Section 4.5.2.4 of Transition Report NFPA805 licensing basis as a risk-informed, performance-based 4.2.4.2 change, verify that the licensee has addressed defense-in-depth RG 1.205 and safety margins as required by Sections 4.2.4.2 of NFPA 805 NEI 04-02, Section 5.3 Code. | |||
If necessary, verify that licensee has provided the total CDF and RG 1.205 No No risk details have been provided in the LAR. The LERF (internal events and external events) of the plant as it will RG 1.174 LAR does not officially reference the supporting be configured upon completion of the transition, including all NEI 04-02, Section 5.3 calculations. | |||
modifications to which the licensee commits in the LAR (licensee may use guidance provided in RG. 1.174 to use qualitative and quantitative information), to enable NRC staff to make decisions with respect to acceptability of plant changes using criteria provided in RG 1.174. | |||
Verify that the baseline PRA model for the post-transition plant RG 1.205 No Submittal does not provide a sufficient risk justification has incorporated (a) completed or planned modifications, and NEI 04-02, Section 5.3 for non-compliances being carried forward. | |||
procedural changes that address non-compliances with respect to current licensing basis, (b) completed or planned modifications including which the licensee has implemented to reduce risk, and (c) non-compliances (with respect to current licensing basis) that have been carried forward without plant changes, during the transition, with risk justifications. | |||
Item (c) above should generally consist of III.G.2 Operator RG 1.205 Yes Discussed in Appendix G of Transition Report Manual Action, Hemyc or other fire barriers which do not meet NEI 04-02, Section 5.3 the acceptance criteria, and deviation from the assumption of multiple-spurious actuations. Item (c) may consist of any other non-compliances with deterministic requirements that are carried forward to the post-transition plant Verify that the licensee has provided the cumulative change in NFPA 805, Section No No risk details have been provided in the LAR. The CDF and LERF associated with all non-compliances (credit for 2.4.4.1 LAR does not officially reference the supporting non-fire-related decreases in CDF and LERF may be taken as RG 1.205 calculations. | |||
per Regulatory Guide 1.205, but only during the transition), | |||
relative to the base line CDF and LERF for the fully compliant plant. | |||
Verify that the licensee has properly utilized the Fire PRA ASME-RA-S-2007 No Although discussed in Section 4.5.1.2 of the Transition standard in establishing the required quality for the application of Report, there is no detailed discussion of Capability the Fire PRA in the change evaluations. This should involve Category for individual supporting requirements in establishing those Supporting Requirements (SRs) that are order to demonstrate acceptable quality to support needed and the Capability Category that must be met for each of change evaluations. | |||
those SRs. | |||
ENCLOSURE Page 12 of 14 | |||
REVIEW CHECKLIST | REVIEW CHECKLIST Section 5.3 of NEI 04-02 describes one acceptable approach to NEI 04-02, Section 5.3 Yes Described in Section 4.5.2 of the Transition Report providing information to the NRC in the LAR for staff evaluation of the plant change process. NRC Staff has endorsed Section 5.3 of NEI 04-02. | ||
10 CFR 50.48(c) endorsed Section 2.7.2.2 Supporting NFPA 805, Section Yes Discussed in Section 4.7.2 of Transition Report Documentation, of NFPA 805 without exceptions. Section 2.7.2.2 2.7.2.2 states that detailed supporting documentation shall be NEI 04-02, Section 4.5 retrievable records. Section 4.5 of Appendix H NEI-04-02 also of Appendix H states licensees responsibilities with respect to program RG 1.200, Section 4.1 documentation. The reviewer should verify that the licensee has stated that it complied with 10 CFR 50.48(c) with respect to archival documentation per guidance provided in Section 4.1 of Regulatory Guide 1.200 or other acceptable standard. | |||
Only fire models that are acceptable to the authority having NFPA 805, Section No Acceptable fire models are not discussed in the LAR jurisdiction shall be used in fire modeling calculations. The 2.4.1.2.1 or the Transition Report. Specific fire models used are models currently evaluated by the NRC for use in NFPA 805 discussed in the Supporting Material provided. | |||
transition are as follows: | |||
- Fire Dynamics Tools (FDT) as documented in NUREG-1805 | |||
- Fire-Induced Vulnerability Evaluation (FIVE), Revision 1 | |||
- Consolidated Fire Growth and Smoke Transport Model, CFAST | |||
- MAGIC | |||
- Fire Dynamics Simulator (FDS) | |||
Verify that the licensee has identified the fire modeling tools that they have used The reviewer should verify that the licensee has stated that the NFPA 805, Section Yes Discussed in Section 4.7.3 of the Transition Report fire models used have been used within the scope, limitations 2.4.1.2.2 and assumptions prescribed for that method. The reviewer should use NUREG-1824 in making this determination. | |||
The five fire models that have been approved for use by the NFPA 805, Section Yes Discussed in Section 4.7.3 of the Transition Report NRC have been verified and validated by a joint effort by NRC 2.4.1.2.3 Research and the Electric Power Research Institute (EPRI). This NUREG-1824 verification and validation effort has been documented in NUREG-1824/EPRI 1011999. | |||
ENCLOSURE Page 13 of 14 | |||
5.3. | REVIEW CHECKLIST Verify that the licensee has stated and/or provided NFPA 805, Section Yes Discussed in Section 4.7.3 of the Transition Report documentation that personnel performing fire modeling are 2.7.3.4 competent in that field and experienced in the application of these methods as they relate to nuclear power plants, nuclear power plant fire protection and power plant operations. | ||
Verify that the licensee has provided a statement in the LAR confirming that it has established procedures at the site to meet requirements of Section 2.6.3. | Verify that the licensee has used core damage frequency (CDF) NFPA 805, Section No LERF calculations were not performed. Section and Large Early Release Frequency (LERF) as measures for 2.4.4.1 4.5.2.4 states that LERF calculations were not risk. performed; that delta-LERF was estimated using the ratio of delta-CDF to delta-LERF Verify that the licensee has addressed the risk contribution NFPA 805, Section Yes Fire PRA was based on NUREG/CR-6850 methods, associated with all potentially risk-significant fire scenarios by 2.4.3.2 which should address all potentially risk-significant fire reviewing the methods and approaches, and/or sample of scenarios. | ||
calculations provided by the licensee in its LAR. | |||
Section 2.7.3.5 of NFPA 805 Code requires licensee to perform NFPA 805, Section Yes Discussed in HNP-F/PSA-0081 an uncertainty analysis to provide reasonable assurance that the 2.7.3.5 performance criteria have been met. NEI 04-02, Section 5.3.4.5 Verify that the levels of availability, reliability and performance NFPA 805, Section Yes Described in Section 4.6 of the Transition Report established by the licensee are acceptable by evaluating the 2.6.1. | |||
approaches used by the licensee to establish them. | |||
Verify that the licensee has included a statement in the LAR NFPA 805, Section Yes Described in Section 4.6 of the Transition Report verifying that methods to monitor availability, reliability and 2.6.2 performance have been established. These methods shall consider the plant operating experience and industry operating experience. | |||
Section 2.6.3 of NFPA 805 requires the licensee to establish NFPA 805, Section Yes Described in Section 4.6.2 of the Transition Report appropriate corrective actions, if the established levels of 2.6.3 availability, reliability and performance are not met, to return to the established levels. It also requires the licensee to establish monitoring to ensure that the corrective actions are effective. | |||
Verify that the licensee has provided a statement in the LAR confirming that it has established procedures at the site to meet requirements of Section 2.6.3. | |||
NFPA 805 Section 4.2.4.1.6 requires the licensee to provide NFPA 805, Section No There is only a general reference to feasibility. | |||
guidance to plant personnel that details the credited success 4.2.4.1.6 path(s) for each fire area, including the performance of recovery actions and repairs. | |||
ENCLOSURE Page 14 of 14}} |
Latest revision as of 12:32, 14 November 2019
ML082701158 | |
Person / Time | |
---|---|
Site: | Harris |
Issue date: | 09/26/2008 |
From: | Boyce T Plant Licensing Branch II |
To: | Burton C Carolina Power & Light Co |
Vaaler, Marlayna, NRR/DORL 415-3178 | |
References | |
TAC MD8807 | |
Download: ML082701158 (24) | |
Text
September 26, 2008 Chris L Burton, Vice President Shearon Harris Nuclear Power Plant Carolina Power & Light Company Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165
SUBJECT:
SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - ACCEPTANCE REVIEW REGARDING THE LICENSE AMENDMENT REQUEST TO ADOPT NATIONAL FIRE PROTECTION ASSOCIATION 805 PERFORMANCE-BASED STANDARD FOR FIRE PROTECTION FOR LIGHT WATER REACTOR GENERATING PLANTS (2001 EDITION) (TAC NO. MD8807)
Dear Mr. Burton:
By application dated May 29, 2008 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML081560639), Carolina Power and Light Company, now doing business as Progress Energy Carolinas, Inc., submitted a proposed amendment for the Shearon Harris Nuclear Power Plant, Unit 1 (HNP). The proposed amendment would enable HNP to adopt a new fire protection licensing basis which complies with the requirements in Title 10 of the Code of Federal Regulations (10 CFR) Section 50.48(a) and (c). Specifically, HNP would transition the fire protection program to one based on the National Fire Protection Association 805 (NFPA 805) Performance-Based Standard for Fire Protection For Light Water Reactor Generating Plants (2001 Edition).
Consistent with 10 CFR 50.90, an amendment to the license (including the technical specifications) must fully describe the changes requested, and follow, as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.
The purpose of this letter is to provide the final results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this request. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed change. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.
The NRCs Fire Protection Branch (AFPB) and Probabilistic Risk Assessment (PRA) Licensing Branch (APLA) performed an acceptance review of the license amendment request (LAR) in accordance with Revision 0 of the Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-109, Acceptance Review Procedures (ADAMS Accession No. ML081200811). The staff subsequently determined that the licensee has not provided all information necessary to start and complete a comprehensive review of the LAR to transition HNP to NFPA-805.
The NRCs staff review identified eight issues involving missing or incomplete information which present significant challenges to commencing and completing a comprehensive review of the LAR on an acceptable schedule. Three additional issues were identified that must be corrected.
C. Burton Under the normal NRR acceptance review process, this licensing action would not be accepted.
However, the staff concluded that since HNP is a NFPA 805 pilot plant, providing PEC with the option of providing an updated submittal within a reasonable time frame while the NRC staff continues its review of acceptable sections of the LAR is in the best interest of HNP, the NRC, the public, and non-pilot NFPA 805 licensees. Specifically, the NFPA 805 pilot process serves a dual purpose. In addition to assisting in the development of the LARs for the pilot plant licensees, the process also provides significant benefit to the NRC staff, the other NFPA 805 transitioning licensees, and the industry as a whole. As with any first time evolution, there are many lessons to be learned in both the development of NFPA 805 submittals and the associated NRC staff review of those submittals. These lessons learned are being factored into the regulatory infrastructure (Regulatory Guides, Standard Review Plan, Inspection Procedures, etc.). On this basis, the NRC has opted to invoke the rare exception provision of LIC-109 and accept for review a LAR which would not otherwise be acceptable for review.
By invoking the rare exception provision of LIC-109 for HNP and allowing PEC to provide a supplemental submittal, the overall duration of the LAR review is extended. This effectively results in an extension of enforcement discretion for all noncompliances until the review is complete. Furthermore, this may result in an extension of enforcement discretion for noncompliances that rely on modifications whose schedule is impacted by the staffs approval of the licensees LAR.
On August 14, 2008, a telephone conference was held with PEC to discuss the LAR issues identified by the NRC staff. As a result, PEC committed to provide the additional information to address each of the identified issues by November 15, 2008.
Technical Acceptance Issues
- 1. The submittal does not reflect the current as-built plant configuration, and it does not provide a detailed, proposed configuration at the completion of transition, including all proposed modifications (sufficient for risk analysis purposes). In many places throughout the submittal, the licensee makes statements that predict compliance will be achieved.
The final plant configuration has not been decided. The acceptability of the proposed modifications cannot be decided since the scope and configuration of the modifications has not been finalized.
The licensee should provide a listing of all proposed modifications and procedure changes being implemented during (and following) transition as part of the new NFPA 805 licensing basis.
- 2. The licensees submittal is not clear in identifying the scope of the requested licensing action; specifically in identifying clearly the committed modifications and deviations from existing deterministic fire protection requirements. Although some of this information may be found in supporting calculations, it is not clearly identified in the calculations, and the calculations are not specifically referenced in the submittal, and therefore do not provide a basis to review the acceptability of the proposed LAR.
The formal submittal, made under oath or affirmation, does not contain details or a summary of the risk basis for transition, the specific modifications proposed for transition, the specific deviations proposed to remain in place after transition, nor references to the
C. Burton calculations which may contain this detail. Since the calculations are not submitted under oath or affirmation (but rather simply to assist the NRC in its review), and are not referenced in the formal submittal, the staff is unable to ascertain what specific changes are requested, and cannot use the calculations as the basis for its safety evaluation.
The licensee should provide:
- A summary of the risk basis for transition, including the specific risk numbers needed to justify non-conformances and committed modifications.
- A reference to the supporting calculations so that they may be considered in developing the safety evaluation report.
- A list of the non-conformances being addressed during transition, including a description of the disposition of each.
- 3. The description of the current licensing basis contained in the Transition Report is limited to quoting the existing Fire Protection License Condition. An accurate, summary level description of the existing licensing basis is needed as a starting point for the evaluation of the transition process. Although much of this information is provided at a very high level of detail in the Transition Report tables, the endorsed industry guidance document (Nuclear Energy Institute (NEI) 04-02, Guidance for Implementing A Risk-Informed, Performance-Based Fire Protection Program Under 10 CFR 50.48(c)) provides a summary description of the licensing basis in Appendix H, Section H.3, Template:
Transition Report Outline.
The licensee should provide a summary level description of the existing licensing basis, as described in NEI 04-02, Appendix H, Section H.3, Template: Transition Report Outline.
- 4. The HNP NFPA 805 LAR proposes to obtain NRC staff approval to accept non-conforming electrical raceway fire barrier systems (HEMYC and MT), Operator Manual Actions transitioning to Recovery Actions, and Multiple Spurious Operations.
The licensees submittal and supporting calculations do not provide a sufficient basis to conclude that the risk-informed decisions proposed are acceptable. Specifically, the submittal does not provide a justification that the Fire PRA being used, nor does it demonstrate that the manner in which it is being used is of sufficient quality for the specific changes being made. Further, the licensees submittal only states that the change in risk will satisfy the guidance of Regulatory Guide (RG) 1.174 An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis, but the supporting calculations do not demonstrate this.
Therefore, the licensee has not provided a risk-informed basis for the acceptability of the proposed changes.
The licensee should provide:
- A risk-informed basis for the acceptability of the proposed changes, in sufficient detail to enable the NRC staff to decide whether the fire PRA or fire modeling is appropriately credited.
- A justification that the Fire PRA is of sufficient quality for the specific changes being made.
C. Burton
- A justification that the manner in which the Fire PRA is being used is appropriate for the risk-informed decisions being made.
- Calculations sufficient to conclude that with the plant configuration in its final, post-transition state, that the change in risk is acceptable.
5 The submittal does not discuss the use of fire models acceptable to the NRC. There is no specific discussion of fire model verification and validation beyond a general statement that Calculational models and numerical methods used in support of compliance with 10 CFR 50.48(c) have been and will be verified and validated as required by Section 2.7.3.2 of NFPA 805.
The licensee should provide a list of the fire models being used to support the transition, and an explanation of how the verification and validation requirements in NFPA 805 Section 2.7.3.2 are being met for each.
- 6. NFPA 805 Section 4.2.4 states: When the use of recovery actions has resulted in the use of this approach, the additional risk presented by their use shall be evaluated. The submittal does not provide the results of the evaluation of risk associated with the use of recovery actions required by NFPA 805 Section 4.2.4. The treatment of recovery action feasibility does not address Multiple Spurious Actuations (MSAs) and their potential impact on available time to implement recovery actions.
The time available to implement recovery actions is directly dependent upon the effect of fire-induced damage to plant components and circuits. Some MSA combinations may cause plant conditions to change faster than previously analyzed in the plants thermal-hydraulic analyses. The treatment of Operator Manual Actions transitioning to Recovery Actions provided in the LAR amounts to a general discussion of method, rather than a detailed demonstration of acceptability.
The licensee should provide:
- A list of the pre-transition operator manual actions (both approved and un-approved).
- A proposed disposition for each.
- For any operator manual actions being carried forward as NFPA 805 recovery actions, the risk associated with their use.
- For any operator manual actions being carried forward as NFPA 805 recovery actions, a detailed demonstration of acceptability, including feasibility.
- A description of how the impact of MSAs has been addressed with respect to feasibility (specifically, discuss whether the existing thermal-hydraulic analyses remain bounding for MSA scenarios, and if not, provide a description of the new thermal-hydraulic analyses and their associated impact on feasibility).
- 7. Large Early Release Frequency (LERF) calculations have not been performed. No justification was provided for the use of a ratio between internal event Core Damage Frequency (CDF) and LERF.
The licensee should provide an analysis of LERF that is acceptable to the staff. There are currently two methods acceptable to the staff: 1) perform a simplified analysis of
C. Burton LERF in accordance with NUREG/CR-6595, Revision 1, An Approach for Estimating the Frequencies of Various Containment Failure Modes and Bypass Events, or 2) perform a complete Level II PRA.
- 8. The discussion in the Transition Report regarding Fire PRA quality is insufficient to determine that staff/peer review findings have been adequately addressed. Specifically, there is no discussion of the extent of condition, or of what changes were made to address the staff-identified deficiencies. Also, there is insufficient justification regarding the fire PRA-identified elements of the American Nuclear Society (ANS) standard which are met at capability category I. In many cases, these are dispositioned as Category I is acceptable with no further basis. Determination and justification of the capability category necessary for supporting requirements on a specific risk-informed application is included in the PRA standard.
The licensee should provide:
- A discussion regarding its review and evaluation of the extent of condition with respect to the staff/peer review findings.
- The disposition of each staff/peer review finding for both the Fire PRA and any of the Internal Events PRA findings that could affect the Fire PRA.
- Additional explanation or justification that capability category I is acceptable for all dispositions that originally were dispositioned as Category I is acceptable.
Additional Important Clarifications There were several statements in the LAR that mischaracterized the NRC staffs assessment of the HNP fire PRA quality.
- 9. Section 5.2.1 of the LAR states:
In support of this change, HNP has developed a fire Probabilistic Risk Assessment (PRA) which has been reviewed and been found acceptable by the NRC during the course of its observation of HNPs transition to NFPA 805 as a Pilot Plant.
Contrary to this assertion, the results of the NRC staff review of the HNP Fire PRA conducted in February 2008, as documented in the preliminary report (ADAMS Accession No. ML080650403), draw an opposite conclusion to the statement in the LAR:
The NRC review team noted that the Harris fire PRA is not yet complete, some tasks have yet to be started, and many areas are still in draft form. At the time of the onsite portion of the review, the Harris fire PRA was more similar to a scoping analysis, rather than a completed fire PRA. The results produced by the fire PRA reviewed by the NRC staff were based upon a number of modeling conservatisms. The staff understands that further work is being done by PE
[Progress Energy] to finalize the fire PRA and to reduce the excess conservatisms.
C. Burton Because the fire PRA model available was a work-in-progress, the NRC staff review of the Harris baseline fire PRA cannot be regarded as sufficient for determination of technical adequacy to support risk-informed applications.
Additional review of the completed fire PRA will be necessary in the future. One approach would be a full-scope industry peer review of the completed HNP fire PRA model.
The licensee should revise Section 5.2.1 of the LAR to more accurately reflect the status of the NRC staff review of the HNP Fire PRA.
The NRC plans a follow-up review to determine the acceptability of the HNP Fire PRA prior to issuing the safety evaluation.
- 10. Section 4.5.1.2 of the LAR states:
In February 2008, as part of the NRC fire PRA staff review, the NRC staff reviewed the resolution of F & Os [facts and observations] from the 2002 NEI-00-02 peer review, the 2006 gap assessment review, and the subsequent 2007 Focused Peer Review. The NRC staff had no findings from that review.
The second sentence could be misconstrued to infer that the NRC staffs lack of findings equates to a favorable assessment of the internal events PRA model. The NRC staff did not perform a review of the HNP internal events PRA model; neither did the NRC staff judge the appropriateness of the resolution of the facts and observations (F&Os) from the internal events PRA model peer review.
The scope of the NRC staff review with respect to the internal events model was provided to PEC in the enclosure to the letter dated January 9, 2008, Shearon Harris Nuclear Power Plant, Unit 1 - Review of the Fire Probabilistic Risk Assessment Model To Support Implementation of National Fire Protection Association (NFPA) Standard NFPA-805, Performance-Based Standard For Fire Protection For Light Water Reactor Electric Generating Plants, as Allowed Under Title 10 of the Code Of Federal Regulations, Paragraph 50.48(c) (TAC No. MC5630), (ADAMS Accession No. ML080070531). In Section II, Review Scope, it states:
Prior to performing the initial Fire Probabilistic Risk Assessment (FPRA) staff review, the staff review team should verify the Internal Events PRA has been reviewed against Part 2 of ASME/ANS RA-S-20071. The results of the Internal Events PRA peer review should be reviewed as a part of the FPRA staff review.
This review SHALL be used in support of the determination for the Capability Category for Supporting Requirements (SRs) above referencing the requirements of Part 2 of ASME/ANS RA-S-2007.
The NRC staff did not review the internal events PRA model. The NRC reviewed 1
American Society of Mechanical Engineers (ASME)/American Nuclear Society (ANS) combined PRA Standard, ASME/ANS RA-S-2007, Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment for Nuclear Power Plant Application, (draft) (PRA Standard)
C. Burton unresolved findings (F&Os) that resulted from industry peer reviews and the HNP gap analysis related to the internal events PRA model.
The licensee should revise the discussion in the Transition Report with regard to the NRC staff review of the Internal Events PRA, Internal Event PRA peer reviews, and the staffs findings.
- 11. Section 4.5.1.2 of the LAR states:.
At the same time, the NRC staff also reviewed the fire PRA in order to provide feedback on the progress to date of the HNP fire PRA development.
The purpose of the NRC staffs review in February 2008, was not to provide feedback on the progress to date. The intent was for the NRC staff to assess a completed fire PRA model against the fire PRA standard. However, the fire PRA was not complete at the time the review was scheduled. In light of the severe time constraints, the NRC staff agreed that it was best to review what was available on the scheduled date. Analyses that were not completed by the review date can be identified from the results of the staff review, but there was no attempt by the staff to assess or measure PECs progress on completing the HNP Fire PRA at the time of the review.
The licensee should revise Section 4.5.1.2 of the Transition Report to reflect the purpose of the NRC staff review.
Conclusion The eight identified Technical Acceptance issues listed above present significant challenges to completing a comprehensive review of the LAR in terms of regulatory requirements and the protection of public health and safety. The staff also identified three issues that mischaracterized the NRC staff review of the HNP Fire PRA. However, since HNP is an NFPA 805 pilot plant, the NRC staff is utilizing the rare exception provision of LIC-109, recommending that the submittal be accepted in the best interest of HNP, the NRC, non-pilot NFPA 805 licensees, and the public. Accepting the submittal is to the benefit of all concerned in order to capture the lessons learned from the pilot process and disseminate them on an expedited basis to the various stakeholders. contains staff comments and observations (review checklist) on the HNP NFPA 805 LAR, which have been previously discussed with the licensee.
C. Burton PEC has agreed to provide the additional information to address each of the identified issues by November 15, 2008, which supports a timely review of the LAR. This will enable the NRC staff to begin its detailed technical review. If additional information is needed for the staff to complete its technical review, you will be advised by separate correspondence. Should you have any questions regarding this review, please contact Marlayna Vaaler at (301) 415-3178.
Sincerely,
/RA/
Thomas H. Boyce, Chief Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-400 cc: See next page
ML082701158 NRR-106 OFFICE LPL2-2/PM LPL2-2/LA DRA/DD LPL2-2/BC NAME MVaaler CSola MCunningham TBoyce DATE 09/23/08 09/26/08 09/05/2008 09/26/2008
- by memo dated Mr. Chris L. Burton Shearon Harris Nuclear Power Plant, Carolina Power & Light Company Unit No. 1 cc:
Mr. Kelvin Henderson Mr. Robert P. Gruber Plant General Manager Executive Director Shearon Harris Nuclear Power Plant Public Staff NCUC Progress Energy Carolinas, Inc. 4326 Mail Service Center Post Office Box 165, Mail Zone 3 Raleigh, North Carolina 27699-4326 New Hill, North Carolina 27562-0165 Ms. Margaret A. Force Director of Site Operations Assistant Attorney General Shearon Harris Nuclear Power Plant State of North Carolina Progress Energy Carolinas, Inc. Post Office Box 629 Post Office Box 165, Mail Zone 1 Raleigh, North Carolina 27602 New Hill, North Carolina 27562-0165 Mr. Tony Gurley, Chair Mr. David H. Corlett, Supervisor Board of County Commissioners Licensing/Regulatory Programs of Wake County Shearon Harris Nuclear Power Plant Post Office Box 550 Progress Energy Carolinas, Inc. Raleigh, North Carolina 27602 Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165 Mr. Carl Thompson, Chair Board of County Commissioners Ms. Kimberly A. Harshaw, Manager of Chatham County Support Services Post Office Box 87 Shearon Harris Nuclear Power Plant Pittsboro, North Carolina 27312 Progress Energy Carolinas, Inc.
Post Office Box 165, Mail Zone 1 Mr. John H. ONeill, Jr.
New Hill, North Carolina 27562-0165 Pillsbury Winthrop Shaw Pittman, LLP 2300 N Street NW.
Resident Inspector / Harris NPS Washington, DC 20037-1128 c/o U. S. Nuclear Regulatory Commission 5421 Shearon Harris Road Mr. John D. Runkle New Hill, North Carolina 27562-9998 Attorney at Law Post Office Box 3793 Mr. J. Paul Fulford Chapel Hill, North Carolina 27515-3793 Manager, Performance Evaluation and Regulatory Affairs PEB 5 Mr. Jim Warren Progress Energy Carolinas, Inc. NC Waste Awareness & Reduction Network Post Office Box 1551 Post Office Box 61051 Raleigh, North Carolina 27602-1551 Durham, North Carolina 27715-1051 Mr. David T. Conley Chairman of the North Carolina Associate General Counsel II - Utilities Commission Legal Department Post Office Box 29510 Progress Energy Service Company, LLC Raleigh, North Carolina 27626-0510 Post Office Box 1551 Raleigh, North Carolina 27602-1551 Public Service Commission State of South Carolina Ms. Beverly Hall, Section Chief Post Office Drawer 11649 Division of Radiation Protection Columbia, South Carolina 29211 N.C. Department of Environment and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721
REVIEW CHECKLIST Sufficient Attribute Source for Comments Review?
Review the Licensees submittal and verify that it includes an RG 1.205 No This information is not readily retrievable from the evaluation of the risk impact associated with major issues such Supporting Material (FSAs). A summary of this as the operator manual actions, Hemyc, and circuit analysis of information should be provided in either the LAR or the possible multiple spurious actuations (either quantitative or Transition Report.
qualitative) as appropriate.
Review the Transition Report, if one is included in the Licensees NEI 04-02 Yes Transition Report is provided as Enclosure 3 to LAR submittal, to verify that it meets the minimum content as defined RG 1.205 Letter. Note: Transition Report does not include in NEI 04-02 Sections 3.4, 4.6.2, and RG 1.205 Administration Section Feed and Bleed:10 CFR 50.48(c)(2)(iii) specifically notes that 10CFR50.48(c)(iii) Yes Includes a declaration that Feed and Bleed is not sole use of feed-and-bleed as the sole fire-protected safe shutdown Safe Shutdown protected path. Included in Table 5-3 path for maintaining reactor coolant inventory, pressure control, of Transition Report and decay heat removal capability is not permitted for pressurized-water reactors (PWRs). This is noted in section 2.2 of NEI 04-02. Verify that a statement to this effect as well as a description of any dependence on feed-and-bleed in the fire protection program is included in the LAR.
Existing Cables: [10CFR50.48(c)(2)(v)] A LAR is acceptable if 10CFR50.48(c)(v) Yes Includes a declaration that cables used at Harris meet the licensee states that the cable installed in the plant meets a flame propagation tests acceptable to NRC. Included flame propagation test that is acceptable to the AHJ. FAQ 06- in Table 5-3 of Transition Report.
0022 documents flame propagation tests that are acceptable to the NRC.
Water Supply and Distribution: [10CFR50.48(c)(2)(vi)]: This 10CFR50.48(c)(2)(vi) Yes Includes a declaration that water supply and paragraph provides that a provisional manual fire-fighting distribution has been previously approved by NRC.
standpipe/hose station system may not be used in place of Provided in Table 5-3 of Transition Report.
seismically qualified standpipes and hose stations unless previously approved in the licensing basis. Licensees who wish to use the italicized exception in Section 3.6.4 of NFPA 805 must submit a request for a license amendment in accordance with paragraph (c)(2)(vii). However, because the NRC considers seismically qualified standpipes and hose stations of such importance, the NRC believes that licensees who wish to use the exception in Section 3.6.4 of NFPA 805 via a license amendment may have difficulty satisfying the three criteria in paragraph (c)(2)(vii).
ENCLOSURE Page 1 of 14
REVIEW CHECKLIST If the licensee proposes to implement modifications as part of RG 1.205 No Modifications have been assumed in calculations the transition to a risk-informed, performance-based fire provided in supporting material, but only summary protection program, verify that for each modification proposed, description and no justification has been provided with the LAR contains a description of the modification, a schedule respect to risk. Section 4.8.3 is too general to provide for implementation of the modification and a risk-informed a justification of risk related to non-compliances.
justification, including compensatory actions, for the acceptability In addition, Section 4.5.4 states that upon completion of the schedule for the modification. Regulatory Issue Summary of modifications, the total change in risk associated 2005-07, Compensatory Measures to Satisfy the Fire Protection with the transition to NFPA 805 will be consistent with Program Requirements, provides guidance on compensatory the acceptance guidelines in Regulatory Guide 1.174.
measures acceptable to the NRC.
Section 4.6.1 of NEI 04-02 states that the LAR should include an NEI 04-02 No Insufficient justification has been provided beyond a updated transition schedule. The licensee should provide not statement that compensatory measures have been only a transition schedule, but also a risk-informed justification applied to each non-compliance.
for the timing of the schedule, demonstrating that the transition will be completed in a timely enough manner to avoid unacceptable risk due existing non-compliances with the current fire protection program that will not be resolved until transition is complete.
Verify that the Licensees submittal package documents the RG 1.205 Yes Included as Attachment M of Transition Report plant's risk-informed fire protection license condition. One acceptable approach would be to use the standard license condition from RG 1.205, if necessary supplemented by FAQ 06-0008.
Verify that all prior fire protection SERs and commitments are 10CFR50.48(c) Yes This attribute has been addressed in a variety of superseded by the issuance of the new license condition. RG 1.205 places; primarily in the Attachment A (NEI 04-02, Review the Licensees submittal package and verify that it NEI 04-02 Table B-1), Attachment B (NEI 04-02, Table B-2),
includes a listing of all SER sections that contain fire protection Attachment C (NEI 04-02, Table B-3) and Attachment commitments. K of the Transition Report.
Verify that the Licensees submittal package includes a list of all NEI 04-02 Yes This attribute has been addressed in a variety of submittals made to support those SERS. places; primarily in the Attachment A (NEI 04-02, Table B-1), Attachment B (NEI 04-02, Table B-2),
Attachment C (NEI 04-02, Table B-3) and Attachment K of the Transition Report.
Verify that the Licensees submittal package includes a NEI 04-02 No Description of CLB in Transition Report Section 2.0, discussion of the existing approved fire protection program so it Overview of Existing Fire Protection Program is can be superseded by the new license conditions. Verify that the limited to quoting the existing Fire Protection License Licensees submittal package includes all prior approvals, Condition (No details have been provided with respect documented in the transition tables (B-1, B-2, and B-3) with to Appendix R, NUREG 0800, BTP Appendix A, etc.)
enough information to be stand-alone and therefore supersede the previous documentations.
ENCLOSURE Page 2 of 14
REVIEW CHECKLIST Verify that the Licensees submittal package documents how the NEI 04-02 Yes Included as Attachment M of Transition Report plant meets the process used to identify any other license conditions for fire protection In accordance with 10 CFR 50.48(c)(3)(i), the LAR should 10CFR50.48(c)(3)(i) Yes Included as Attachment M of Transition Report contain a list of any other license conditions that need to be revised or suspended, the necessary revisions to these other license conditions, and an explanation of why these revisions are adequate to accomplish the plants adoption of NFPA 805.
Verify that the Licensees submittal package documents not only 10CFR50.48(c) Yes Included as Attachment M of Transition Report identify the other license conditions, but also describe the process used to identify the other license conditions.
Verify that the Licensees submittal package discusses which 10CFR50.48(c) Yes Included as Attachment N of Transition Report Technical Specifications needing modification were identified, NEI 04-02 and the process used for their identification. Verify that the package includes:
All administrative/audit technical specifications needing to be NEI 04-02 Yes Included as Attachment N of Transition Report revoked Equipment technical specifications to be revised. Ensure they 10CFR50.48(c) Yes Included as Attachment N of Transition Report are consistent with 10 CFR 50.48(c)
Revised technical specification sections and their associated 10CFR50.48(c) Yes Included as Attachment N of Transition Report bases NEI 04-02 Verify that the Licensees submittal package documents how the 10CFR50.48(c) Yes Included as Attachment M of Transition Report plant meets the process used to identify any other license NEI 04-02 conditions for fire protection Verify that the Licensees submittal package documents not only Yes Included as Attachment O of Transition Report identify the orders and exemptions, but also describe the process used to identify the orders and exemptions.
Verify that the Licensees submittal package documents include 10CFR50.91 Yes Included as Attachment U of Transition Report a statement on No Significant Hazards Consideration, in 10CFR50.92 accordance with 10 CFR 50.91 and 10 CFR 50.92. Appendix H NEI 04-02, Appendix H of NEI 04-02 provides one acceptable statement to the NRC staff that shows that the Licensees submittal package, including the LAR meets the criteria for No Significant Hazards Consideration.
Verify that the Licensees submittal package documents includes 10CFR50.22(b) and (c) Yes Included as Attachment V of Transition Report a statement on Environmental Considerations in accordance NEI 04-02, Appendix H with 10 CFR 51.22(b) and (c). Appendix H of NEI 04-02 provides one example of an acceptable statement.
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REVIEW CHECKLIST Verify that the Licensees submittal package documents how the 10CFR50.48(c)(3)(i) Yes Included as Attachment R of Transition Report plant meets the requirements of 10 CFR 50.48(c)(3)(i), which requires licensees include discussion of any changes Updated Final Safety Analysis Report (UFSAR).
Verify that the Licensees submittal package documents include NEI 04-02, Section Yes Included as Attachment R of Transition Report discussion of any changes to UFSAR necessitated by the license 4.6.1 amendment and a statement that the changes will be made in accordance with 10 CFR 50.71(e) As per NEI 04-02 Section 4.6.,1. Furthermore, verify the adequacy of the commitment made by the licensee to make changes to the UFSAR.
NRC established the FAQ process in accordance with RIS 2007 RIS 2007-19 Yes Included as Attachment H of Transition Report 19 - Process For Communicating Clarifications of Staff Positions Provided in Regulatory Guide 1.205 Concerning Issues Identified During the Pilot Application of National Fire Protection Association Standard 805 to clarify issues encountered during the pilots transition. Therefore, licensees may rely on FAQ resolutions to comply with 10 CFR 50.48(c). Relying on FAQs is acceptable to the NRC staff within the constraints defined in the FAQs.
Verify that the Licensees submittal package includes, a Fire RG 1.205 Yes Included as Attachment M of Transition Report Protection License Condition that provides risk acceptance criteria for risk-informed, performance-based changes to the fire protection program. To be considered acceptable, the license condition must require the licensee to implement and maintain in effect all provisions of the approved fire protection program, with specific references to the NFPA 805 transition license submittal and subsequent Safety Evaluation Report. The license condition must also provide acceptance criteria for self approved and NRC approved changes.
Use of Performance-Based Methods to make changes to 10CFR50.48(c)(2)(vii) Yes Included as Attachment P of Transition Report Fundamental Fire Protection Program and Design Elements must be requested through the submittal of a LAR. Review of LARs submitted in accordance with 10 CFR 50.48(c)(2)(vii) will focus on review of the technical aspects of the approach or method proposed by the licensee compared to the requirement(s) in Chapter 3 and the performance goals, objectives and criteria of NFPA 805.
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REVIEW CHECKLIST 10 CFR 50.48(c) allows licensees to request approval to use 10CFR50.48(c)(4) Yes Included as Attachment Q of Transition Report risk-informed or performance-based alternatives to compliance with NFPA 805. A licensee may submit a LAR to use risk-informed or performance-based alternatives to compliance with NFPA 805. Verify the adequacy of methods and licensees evaluation and conclusions with regard to meeting the margins of safety and defense-in-depth criteria of NFPA 805.
Licensees may use performance-based Fire Protection RG 1.205 Yes Included as Attachment J of Transition Report Engineering Evaluations to demonstrate compliance to NEI 04-02 Fundamental Fire Protection Program and Design Elements during transition.
Verify that the Licensees submittal package documents a RG 1.205, C.3.3 Yes Included as Attachment F of Transition Report summary of the MSO methodology used. The methodology used NEI 04-02, B.2.1.3 should be consistent with and implement the lessons learned from pilot plant and preceding non-pilot plant activities as reflected in the changes from the FAQ process, as applicable to the applicants particular situation. It should contain sufficient information concerning methods, tools, and acceptance criteria used to enable the staff to determine the acceptability of the licensees methodology. The analysis should generally be performed and arranged by Fire Areas, although in some cases an alternative spatial approach may prove to be more practical. If an expert panel process was used, it should be documented with results clearly presented. The MSO analysis should generally conform with requirements found in NEI 04-02 B.2.1.3 and RG 1.205, C.3.3 ENCLOSURE Page 5 of 14
REVIEW CHECKLIST Verify that the Licensees methodology includes a feasibility NFPA 805, Section No Description of methodology does not meet this level of determination, including an evaluation of egress and task 4.2.4 detail (discussing egress and task lighting). Does not lighting. An evaluation of the risk impact associated with the include discussion of methodology to correlate operator manual actions (either qualitative or quantitative), must Thermal-Hydraulic Analyses with Multiple Spurious be described and included as appropriate. Quantitative risk Actuation scenarios to determine allowable recovery calculations should be in accordance with Section 4.2.4.2 of action timelines.
NFPA 805 (a bounding calculation approach is acceptable). The description of the transition of OMA to recovery action should Risk of credited recovery actions has not been include: 1) whether the operator manual actions are currently adequately addressed.
allowed or were previously reviewed and approved by the NRCs Office of Nuclear Reactor Regulation (NRR), and 2) reference to documentation that demonstrates prior review and approval by the NRC. Operator manual actions that are currently allowed and/or have been previously reviewed and approved by the NRC (as documented in an approved exemption/deviation) can be transitioned without a change evaluation (the risk associated with their use must still be evaluated).
Verify that the Licensees submittal package clearly documents RG 1.205 Yes Included in Attachment A (NEI 04-02, Table B-2) and previously approved alternatives to the fundamental fire NEI 04-02 Attachment K of Transition Report protection program requirements of NFPA 805 Chapter 3 that are being carried forward to the NFPA 805 Licensing Basis.
Verify that the Licensees submittal package documents all RG 1.205 Yes Included in Attachment A (NEI 04-02, Table B-2) and previously approved variations, and the documentation which NEI 04-02 Attachment K of Transition Report demonstrates prior NRC approval of an alternative to Chapter 3 requirements, as well as approval of noncompliance with existing license regulatory requirements, is referenced. Any items for which previous NRC approval is unclear should be listed and evaluated via a plant change analysis.
If Existing Engineering Equivalency Evaluations are used, the NEI 04-02 Yes Section 4.2.2.2 and Attachment J of Transition Report licensee must affirm in the LAR that they of appropriate quality, or, provide documentation as part of the LAR for staff review.
Verify that the LAR has described any current variances with RG 1.205 No Contained in Supporting Material (FSAs); No risk deterministic fire protection requirements that will be carried over numbers have been supplied in either the LAR or the to the NFPA 805 performance-based licensing basis. The total Transition Report.
risk increase associated with all fire protection program non-compliances (based on current deterministic fire protection program regulations) that the licensee does not intend to bring into compliance and the total risk change associated with plant changes planned for the transition to NFPA 805 should be estimated and reported.
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REVIEW CHECKLIST Verify that the Licensees submittal package documents a NEI 04-02 Yes Described in Section 4.6 of the Transition Report performance monitoring program, including a description and RG 1.174 rationale for its implementation and the performance monitoring strategy for the proposed licensing basis change in accordance with RG 1.174.
Verify that the Licensees submittal package states that the Fire RG 1.174 No Submittal does not go to this level of detail with respect PRA peer review contains the following elements: a) a review of RG 1.205 to the staff review or the subsequent peer review.
the methods used in the PRA and a determination of whether the application of those methods was done correctly in the Fire PRA baseline model, b) a comparison of the PRA models against the plant design and procedures to validate that they reflect the as-built and as operated plant, 3) a review of key assumptions to determine if they are appropriate and to assess their impact on the PRA results.
Verify that the Licensees submittal package documents: 1) a RG 1.174 No The licensee's basis for the technical adequacy of the description of high level findings, 2) details of questions arising RG 1.205 fire PRA model is discussed in Section 4.5.1. There during the peer review and any findings and their implemented or are several omissions which are directly relevant to the proposed (with commitment) resolution, 3) the findings related to staff's ability to conduct its licensing review:
the pedigree of the model and their relationship to a. The staff conducted a review of the draft fire current/planned plant configuration. As needed, during the Post- PRA model and identified deficiencies - these are LAR Site Audit, verify that the licensee has properly simply dispositioned in Table 4-3 as "Closed, per dispositioned findings that affect the risk-informed changes. industry peer review." There is no discussion of the extent of condition, nor of what changes were made to address the staff-identified deficiencies.
- b. The staff and industry peer review of the fire PRA identified elements of the ANS standard which are met at capability category I - in many cases, these are dispositioned in Table 4-5 as "Cat. I is acceptable" with no further basis Verify that the Licensees submittal package documents how the FAQ 06-0019 Yes Included as Attachment I of Transition Report plant defines the term "Power Block" The definition should be compatible with the one given in the glossary of NFPA 805 defines Power Block as1.6.46* Power Block. Structures that have equipment required for nuclear plant operations. The interpretation of this term has significant implications on the licensing basis of the licensee. Therefore, the licensees are required to describe the boundaries of the power block as a part of their submittal to the NRC (One acceptable approach of interpreting the definition acceptable to the staff is provided in FAQ resolution 06-19 ML070510365 ENCLOSURE Page 7 of 14
REVIEW CHECKLIST The Fundamental Fire Protection Program and Design Elements Yes Yes Described in Section 4.1 and included as Attachment are established in Chapter 3 of NFPA 805. Section 4.3.1 of A (NEI 04-02, Table B-1) of Transition Report NEI 04-02 sets out a systematic process for determining the extent to which the current licensing basis meets these criteria and for identifying the fire protection program changes that would be necessary for complete compliance.
The Methodology to be used to implement a performance-based NFPA 805 Chapter 2 Yes Described in Section 4.2.1 and included as Attachment Fire Protection Program is provided in NFPA 805 Chapter 2. RG 1.205 B (NEI 04-02, Table B-2) of Transition Report Section 4.3.2 sets out a systematic process for evaluating the NEI 00-01, Rev. 1 existing post-fire safe shutdown analysis against the methodology requirements provided in NFPA 805 Chapter 2.
Regulatory Guide 1.205 endorses the deterministic safe shutdown analysis methodology provided in Chapter 3 of NEI 00-01, Revision 1.
The Nuclear Safety Performance Criteria are established in NFPA 805, Chapter 4 Yes Described in Section 4.2.2 and included in Attachment NFPA 805, Section 1.5. NFPA 805, Chapter 4, provides the NEI 04-02 C (NEI 04-02, Table B-3) of Transition Report methodology to determine the fire protection systems and features required to achieve the performance criteria outlined in Section 1.5. Section 4.3.2 of NEI 04 02 sets out a systematic process for determining the extent to which the current licensing basis meets these criteria and for identifying the fire protection program changes that would be necessary for complete compliance. Verify that the Licensees submittal package documents the methodology for performing the Fire Area-by-Fire Area Transition of its Fire Protection Program. NEI 04 02 Table B 3 is one acceptable approach (additional guidance is contained in FAQ 07 0039, Lessons Learned - NEI 04 02 B 2 and B 3 Tables).
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REVIEW CHECKLIST Review the Licensees treatment of non-power operations, NEI 04-02, Section Yes Described in Section 4.3 and included in Attachment D considering the following: 4.3.3 (NEI 04-02, Table F-1) of Transition Report Licensees are not required to prepare a complete PRA to model non-power operations; instead they can use a simplified approach of maximizing outage safety by focusing on the availability of systems that provide and support key safety functions as well as on measures that can reduce both the likelihood and consequences of adverse events.
RG 1.205 endorses the approach documented in NEI 04 02.
Section 4.3.3 of NEI 04 02, Revision 1,states that the nuclear safety goal of NFPA 805 requires evaluation of the effects of a fire during any operational mode and plant configuration. NEI 04 02 Section 4.3.3 further goes on to provide a strategy that demonstrate[s] that the nuclear safety performance criteria are met for High(er) Risk Evolutions (HRE) (HREs as defined by NUMARC 91-06) during non-power operational modes Review the Licensees submittal package to verify that the licensee demonstrates that the nuclear safety performance criteria are met during Higher Risk Evolutions. To accomplish this objective, verify that the licensee has documented the following tasks using NEI 04-02, Table F-1 and the additional guidance provided in FAQ 07-0040:
- Review of existing plant outage processes (outage management and outage risk assessments) to determine equipment relied upon to provide Key Safety Functions (KSF) including support functions during the required POSs.
- Comparison of the equipment credited for achieving these KSFs against the equipment credited for nuclear safety.
- For those components not already credited (or credited in a different way e.g., on versus off, open versus closed, etc.) analysis of the circuits in accordance with the nuclear safety methodology.
- Identification of locations where 1) fires may cause damage to the equipment (and cabling) credited above, or 2) recovery actions credited for the KSF are performed
- Identification of fire areas where a single fire may damage all the credited paths for a KSF.
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REVIEW CHECKLIST
- For the above-mentioned areas the licensee may consider combinations of the following options to reduce fire risk depending upon the significance of the potential damage:
o Prohibition or limitation of hot work in fire areas during periods of increased vulnerability o o Verification of operable detection and /or suppression in the vulnerable areas.
o Prohibition or limitation of combustible materials in fire areas during periods of increased vulnerability o Provision of additional fire patrols at periodic intervals or other appropriate compensatory measures (such as surveillance cameras) during increased vulnerability o Use of recovery actions to mitigate potential losses of key safety functions.
o Identification and monitoring in-situ ignition sources for fire precursors (e.g., equipment temperatures).
Verify that the Licensees submittal package documents that 10CFR50.48(c)(3)(i) Yes Described in Section 4.4 and included in Attachment E radiation release to any unrestricted area due to the direct NEI 04-02 Appendices (NEI 04-02, Table G-1) of Transition Report effects of fire protection activities (but not involving fuel damage) H&G remain as low as reasonable achievable, not to exceed 10 CFR Part 20 limits. 10 CFR 50.48(c)(3)(i) requires licensees transitioning to NFPA 805 satisfy performance goals, objectives, and criteria provided in NFPA 805. Sections 1.3.2, 1.4.2, and 1.5.2 of NFPA 805 provide goals, performance objectives, and performance criteria associated with this regulatory requirement, respectively. Section 4.3 of Appendix H to NEI 04 02 provides one acceptable approach to documenting information that must be provided to the NRC in the LAR for staff evaluation. Appendix G of NEI 04 02 provides evaluations which the reviewer can consult as part of this review.
Verify that the licensee has created a document that includes fire NEI 04-02 Yes Discussed in Section 4.7 of Transition Report hazards identification and nuclear safety capability assessment, on a fire area basis, for all fire areas that could affect the nuclear safety or radioactive release performance criteria defined in NFPA 805 Chapter 1.
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REVIEW CHECKLIST Verify that the licensee has stated in the LAR that each analysis, NFPA 805, Section Yes Discussed in Section 4.7.3 of Transition Report calculation, or evaluation performed was independently 2.7.3.1 reviewed.
Verify that the LAR has identified acceptable draft or final RG 1.200 Yes Discussed in Section 4.5.2 of Transition Report standards as well as draft or final regulatory guides (or similar regulatory guidance) that served as a basis for addressing non-compliances through a fire PRA.
Verify that the LAR has identified acceptable draft or final PRA RG 1.200 No LAR does not adequately address Fire PRA quality standards used to determine that the fire PRA is of sufficient technical quality to support addressing non-compliances during transition to NFPA 805.
Verify that licensee has submitted documentation for staff RG 1.200 No Staff Review/Peer Review Findings/F&Os have not review, in accordance with the guidance outlined in Section 4.2 been fully addressed in the submittal. There is no of Regulatory Guide 1.200, for NRC review as they apply to discussion of the extent of condition, or of what NFPA 805 LARs. For example, the non-pilot plants must provide changes were made to address the staff-identified all Significant Facts & Observations (Findings) from the peer deficiencies.
review(s) conducted for the Fire PRA, their resolution (or plan for resolution, with schedule and commitments) and a list of all The staff and industry peer review of the fire PRA Significant Facts and Observations (F&Os) from the internal identified elements of the ANS standard which are met events PRA peer reviews, (including supplemental or focused- at capability category I - in many cases, these are scope reviews) that have the potential to impact the Fire PRA, dispositioned in Table 4-5 as "Cat. I is acceptable" with and their resolutions The submittal shall also include significant no further basis.
findings from assessments against the endorsed PRA Quality Standards and their resolutions, if the peer reviews were not conducted in conformance with the endorsed standards and RG 1.200.
Verify that the LAR provides information about the processes NFPA 805, Section Yes Discussed in Section 4.7 of Transition Report that the licensee has established in order to ensure that PRA 2.7.1.1 and fire modeling calculations in support of changes that it may choose to implement after transitioning to the NFPA 805 licensing basis remain valid.
For each item of non-compliance that is carried forward to NFPA 805, Section No Modifications credited in the LAR are not sufficient to NFPA805 licensing basis as a risk-informed, performance-based 2.4.4.1 bring risk down to acceptable levels. Modifications yet change, verify that the licensee has provided the difference in RG 1.205 to be postulated have not been integrated into the CDF and LERF for the plant, with and without the item being in calculations so that they reflect accurate CDF and compliance. LERF values.
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REVIEW CHECKLIST For each item of non-compliance that is carried forward to NFPA 805 Section Yes Discussed in Section 4.5.2.4 of Transition Report NFPA805 licensing basis as a risk-informed, performance-based 4.2.4.2 change, verify that the licensee has addressed defense-in-depth RG 1.205 and safety margins as required by Sections 4.2.4.2 of NFPA 805 NEI 04-02, Section 5.3 Code.
If necessary, verify that licensee has provided the total CDF and RG 1.205 No No risk details have been provided in the LAR. The LERF (internal events and external events) of the plant as it will RG 1.174 LAR does not officially reference the supporting be configured upon completion of the transition, including all NEI 04-02, Section 5.3 calculations.
modifications to which the licensee commits in the LAR (licensee may use guidance provided in RG. 1.174 to use qualitative and quantitative information), to enable NRC staff to make decisions with respect to acceptability of plant changes using criteria provided in RG 1.174.
Verify that the baseline PRA model for the post-transition plant RG 1.205 No Submittal does not provide a sufficient risk justification has incorporated (a) completed or planned modifications, and NEI 04-02, Section 5.3 for non-compliances being carried forward.
procedural changes that address non-compliances with respect to current licensing basis, (b) completed or planned modifications including which the licensee has implemented to reduce risk, and (c) non-compliances (with respect to current licensing basis) that have been carried forward without plant changes, during the transition, with risk justifications.
Item (c) above should generally consist of III.G.2 Operator RG 1.205 Yes Discussed in Appendix G of Transition Report Manual Action, Hemyc or other fire barriers which do not meet NEI 04-02, Section 5.3 the acceptance criteria, and deviation from the assumption of multiple-spurious actuations. Item (c) may consist of any other non-compliances with deterministic requirements that are carried forward to the post-transition plant Verify that the licensee has provided the cumulative change in NFPA 805, Section No No risk details have been provided in the LAR. The CDF and LERF associated with all non-compliances (credit for 2.4.4.1 LAR does not officially reference the supporting non-fire-related decreases in CDF and LERF may be taken as RG 1.205 calculations.
per Regulatory Guide 1.205, but only during the transition),
relative to the base line CDF and LERF for the fully compliant plant.
Verify that the licensee has properly utilized the Fire PRA ASME-RA-S-2007 No Although discussed in Section 4.5.1.2 of the Transition standard in establishing the required quality for the application of Report, there is no detailed discussion of Capability the Fire PRA in the change evaluations. This should involve Category for individual supporting requirements in establishing those Supporting Requirements (SRs) that are order to demonstrate acceptable quality to support needed and the Capability Category that must be met for each of change evaluations.
those SRs.
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REVIEW CHECKLIST Section 5.3 of NEI 04-02 describes one acceptable approach to NEI 04-02, Section 5.3 Yes Described in Section 4.5.2 of the Transition Report providing information to the NRC in the LAR for staff evaluation of the plant change process. NRC Staff has endorsed Section 5.3 of NEI 04-02.
10 CFR 50.48(c) endorsed Section 2.7.2.2 Supporting NFPA 805, Section Yes Discussed in Section 4.7.2 of Transition Report Documentation, of NFPA 805 without exceptions. Section 2.7.2.2 2.7.2.2 states that detailed supporting documentation shall be NEI 04-02, Section 4.5 retrievable records. Section 4.5 of Appendix H NEI-04-02 also of Appendix H states licensees responsibilities with respect to program RG 1.200, Section 4.1 documentation. The reviewer should verify that the licensee has stated that it complied with 10 CFR 50.48(c) with respect to archival documentation per guidance provided in Section 4.1 of Regulatory Guide 1.200 or other acceptable standard.
Only fire models that are acceptable to the authority having NFPA 805, Section No Acceptable fire models are not discussed in the LAR jurisdiction shall be used in fire modeling calculations. The 2.4.1.2.1 or the Transition Report. Specific fire models used are models currently evaluated by the NRC for use in NFPA 805 discussed in the Supporting Material provided.
transition are as follows:
- Fire Dynamics Tools (FDT) as documented in NUREG-1805
- Fire-Induced Vulnerability Evaluation (FIVE), Revision 1
- Consolidated Fire Growth and Smoke Transport Model, CFAST
- MAGIC
- Fire Dynamics Simulator (FDS)
Verify that the licensee has identified the fire modeling tools that they have used The reviewer should verify that the licensee has stated that the NFPA 805, Section Yes Discussed in Section 4.7.3 of the Transition Report fire models used have been used within the scope, limitations 2.4.1.2.2 and assumptions prescribed for that method. The reviewer should use NUREG-1824 in making this determination.
The five fire models that have been approved for use by the NFPA 805, Section Yes Discussed in Section 4.7.3 of the Transition Report NRC have been verified and validated by a joint effort by NRC 2.4.1.2.3 Research and the Electric Power Research Institute (EPRI). This NUREG-1824 verification and validation effort has been documented in NUREG-1824/EPRI 1011999.
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REVIEW CHECKLIST Verify that the licensee has stated and/or provided NFPA 805, Section Yes Discussed in Section 4.7.3 of the Transition Report documentation that personnel performing fire modeling are 2.7.3.4 competent in that field and experienced in the application of these methods as they relate to nuclear power plants, nuclear power plant fire protection and power plant operations.
Verify that the licensee has used core damage frequency (CDF) NFPA 805, Section No LERF calculations were not performed. Section and Large Early Release Frequency (LERF) as measures for 2.4.4.1 4.5.2.4 states that LERF calculations were not risk. performed; that delta-LERF was estimated using the ratio of delta-CDF to delta-LERF Verify that the licensee has addressed the risk contribution NFPA 805, Section Yes Fire PRA was based on NUREG/CR-6850 methods, associated with all potentially risk-significant fire scenarios by 2.4.3.2 which should address all potentially risk-significant fire reviewing the methods and approaches, and/or sample of scenarios.
calculations provided by the licensee in its LAR.
Section 2.7.3.5 of NFPA 805 Code requires licensee to perform NFPA 805, Section Yes Discussed in HNP-F/PSA-0081 an uncertainty analysis to provide reasonable assurance that the 2.7.3.5 performance criteria have been met. NEI 04-02, Section 5.3.4.5 Verify that the levels of availability, reliability and performance NFPA 805, Section Yes Described in Section 4.6 of the Transition Report established by the licensee are acceptable by evaluating the 2.6.1.
approaches used by the licensee to establish them.
Verify that the licensee has included a statement in the LAR NFPA 805, Section Yes Described in Section 4.6 of the Transition Report verifying that methods to monitor availability, reliability and 2.6.2 performance have been established. These methods shall consider the plant operating experience and industry operating experience.
Section 2.6.3 of NFPA 805 requires the licensee to establish NFPA 805, Section Yes Described in Section 4.6.2 of the Transition Report appropriate corrective actions, if the established levels of 2.6.3 availability, reliability and performance are not met, to return to the established levels. It also requires the licensee to establish monitoring to ensure that the corrective actions are effective.
Verify that the licensee has provided a statement in the LAR confirming that it has established procedures at the site to meet requirements of Section 2.6.3.
NFPA 805 Section 4.2.4.1.6 requires the licensee to provide NFPA 805, Section No There is only a general reference to feasibility.
guidance to plant personnel that details the credited success 4.2.4.1.6 path(s) for each fire area, including the performance of recovery actions and repairs.
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