3F1092-04, Responds to NRC Bulletin 92-001,Supplement 1, Failure of Thermo-Lag 330 Fire Barrier Sys to Perform Its Specified Endurance Function. Thermo-Lag 330 Not Used as Fire Barrier Matl on Walls or Ceilings at Plant
| ML20118C099 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 10/02/1992 |
| From: | Beard P FLORIDA POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 3F1092-04, 3F1092-4, IEB-92-001, IEB-92-1, NUDOCS 9210090258 | |
| Download: ML20118C099 (3) | |
Text
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Florida Power C O F1 ' O h A 1 t o to Crystal River th11t 3 Decket No. 50-302 October 2, 1992 3F1.092-04 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C.
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Subject:
Bulletiri 92-01, Supplement 1: Failure of Thermo lag 330 Fire Barrier System to Perform Its Specified Fire Endurance Function References A. NRC to FPC Bulletin 92-01 dated June 24, 1992 B. FPC to NRC "3F0792-12, Responds to NRC Bulletin 92-001, Failure of Thermo-Lag 330 Fire Barrier Sys to Maintain Cabling in Wide Cable Trays & Small Conduits Free from Fire Damage. List of Thermo-lag 330 Fire Barrier Matl Providing [[Topic" contains a listed "[" character as part of the property label and has therefore been classified as invalid. Encl|letter dated July 29, 1992]] C. NRC to FPC Bulletin 92-01, Supplement I dated August 28, 1992
Dear Sir:
Florida Power Corporation (FPC) hereby submits the information requested in NRC Bulletin 92-01, Supplement 1, " Failure of Thermo-lag 330 Fire Barrier System to Perform Its Specified Fire Endurance Feaction."
The information provided includes confirmation of fire area reviews for installed Thermo-lag (TSI) barrier material, a compensatory measures update, and actions planned to address the degraded fire barriers.
Identification of Plant Areas Containing TSI Material Areas within Crystal River Uait 3 that contain TSI material, and those areas that use this material for protection and separation of safe shutdown capability have been identified.
This includes TSI material used on conduits, cable trays, enclosures, junction boxes, and supports.
Thermo-lag 330 is not used as fire barrier material on walls or ceilings at Crystal River Unit 3.
During the follow-up review for this supplement, two additional conduits which use TSI as a fire barrier were found that were not identified in the original response to Bulletin 92-01. This information has been summarized and is available for on-site review by the NRC, 080043
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F Cynpens'atory Heasures Update All areas that use Thermo-lag 330 on cable trays, conduits, enclosures, junction boxes, atd supports as fire barrier material for protection and separation of safe shutdown functions are surveilled by one hour roving fire watches.
Each of these areas has fire detection capability.
This type of compcnsatory measure is consistent with CR-3's Technical Specifications and was established to s"pport the recommended actions of Bulletin 92-01 and Bulletin 92-01, Supplement 1.
FPC still considers that the TSI retains significant valho as a fire barrier material and continues to track breaches and replace or repair damaged barriers in accordance with plant procedures.
Measures Planned to Address Degraded Fire Barriers Restoration of the degraded TSI fire barrier material is being evaluated.
Appropriate actions to address restoration of the fire barrier material is being coord'iated by NUMARC.
Florida Power Corporation is continuing to monitor these generic industry activities and will continue to participate in the developmental process. We understand the NUMARC activities will include ev;1uation of test results, review of test acceptance criteria, evaluation of future TSI configuration testing, and development of an industry program plan.
We will support efforts to resolve the TSI fire barrier issue in a timely manner, and will apply the results of these efforts, when completed, to the TSI installations withir. the scope of Bulletin 92-01 and Supplement 1, as appropriate.
Summary Areas within Crystal River Unit 3 that contain TSI material, and those areas that use this material for protection and separation of safe shutdown capability have been identified.
Compensatory measures consistent with CR-3's Technical Specifications have been established to support the recommended actions of Bulletin 92-01 and Supplement 1, and these measures will remain in effect until the TSI fire barrier issues are resolved.
Florida Power Corporation will continue to evaluate the long term actions necessary to restore the degraded TSI fire barriers in question, and will provide addi'.ional information in support of these actions as appropriate.
Sincerely, h ' t/Y h P. M. Beard, Jr.
Senior Vice President Nuclear Operations PMB:REF xc: Regional Administrator, Region II NRR Project Manager Senior Resident Inspector
r STATE OF FLORIDA COUNTY OF CITRUS P.M. Beard, Jr. states that he is the Senior Vice President, Nuclear Operations
'or Florida Power Corporation; that ne is authorized on the part of said company to sign and file with the Nuclear Regulatory Commission the information attached hereto; and that all such statements made and matters set forth therein are true and correct to the best of his knowledge, information, and belief.
.W P.M. Beard, Jr.
Senior Vice President Nuclear Operations Subscribed and sworn to before me, a Notary Public in and for the State and County above named, this
'?nd day of October,1992.
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Nctary Public, State of Florida at Large My Conviission Expires: (/z//95 J:gt, o ;
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