ML20141J045
| ML20141J045 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/22/1997 |
| From: | Raghavan L NRC (Affiliation Not Assigned) |
| To: | Richard Anderson FLORIDA POWER CORP. |
| Shared Package | |
| ML20140G552 | List: |
| References | |
| GL-92-08, GL-92-8, TAC-M91772, NUDOCS 9705270218 | |
| Download: ML20141J045 (3) | |
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y' UNITED STATES g
j NUCLEAR REGULATORY COMMISSION O
2 WASHINGTON, D.C. 20066 4001
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May 22, 1997 Mr. Roy A. Anderson Senior Vice President, Nuclear Operations Florida Power Corporation ATTN: Manager, Nuclear Licensing Crystal River Energy Complex (SA2A) 15760 W Power Line Street Crystal River, Florida 34428-6708
SUBJECT:
CRYSTAL RIVER UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION REGARDING THERM 0-LAG RELATED AMPACITY DERATING ISSUES (TAC NO. M91772)
Dear Mr. Anderson:
By letter dated June 14, 1996, you submitted a response to the Nuclear Regulatory Commission (NRC) Request for Additional Information related to Generic Letter (GL) 92-08, "Thermo-Lag 330-1 Fire Barriers," for Crystal River i
Nuclear Plant, Unit 3.
Your submittal included an Underwriters Laboratory (UL) report entitled, "Ampacity Test Investigation of Raceway Fire Barriers for Conduit and Cable Tray Systems." The staff, in conjunction with its contractor, Sandia National Laboratories (SNL), has completed its initial review of your submittal. The enclosed SNL letter report, Rev. O, dated March 7,1997, to U.S. NRC documents the results of our review.
Based on its review, the staff has determined that the following open issues and concerns require clarification:
1)
The test ampacity value for the 4-inch conduit protected by the MTS-1 fire barrier system is questionable. The test is probably compromised by a false-high ampacity limit indication similar to the false-high indications of Test Article 1 and 2 (1-inch conduit - baseline tests).
For details, please see the enclosed SNL letter report Section 3.3.1.
Please comrrent and discuss the impact of the-alternate ampacity derating value (33%) as calculated by SNL on the existing ampacity margin for the 4-inch conduit protected by the MTS-1 fire barrier system.
Provide the available ampacity margins (i.e., after application of derating factors) for all applicable electrical raceways which are protected by fire barriers.
grot ji 21 RBC FE.E CEiiiiER COPY 9705270218 970522 PDR ADOCK 05000302 p
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f Mr. R. Anderson l 2)
The UL test report's drawings indicate that the cable trays for baseline ampacity tests did not possess solid tray covers; however, the tested configuration was not explicitly stated in the test documentation.
Please confirm that the cable tray baseline ampacity tests were all performed in the absence of any solid tray covers having been installed on the test items.
Please provide your response within 45 days of receipt of this letter.
Sincerely, Original signed by l
L. Raghavan, Project Manager Project Directorate II-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-302 l
Enclosure:
SNL Test, dated 03/07/97 cc w/ enclosure:
See next page Distribution Docket File-PUBLIC CR-3 r/f S. Varga J. Zwolinski ACRS OGC l
J. Calvo i
R. Jenkins T. Marsh S. West E. Connell l
G. Tracy l
i DOCUMENT NAME: G:\\ CRYSTAL \\91772.RAI To roceive a copy of this document, indicate in the box:
"C" - Copy without attachment / enclosure "E" - Copy with attachment / enclosure "N" = No copy l (,
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OFFICE PDil*3/PM l
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NAME LRagavan W' BClayton &
FHebdon k DAVE 05/7(/97 05/s\\/97 05/ 9 /97 OFFICIAL RECORD COPY
Mr. Roy A. Anderson CRYSTAL RIVER UNIT N0. 3 Florida Power Corporation cENERATING PLANT a
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cc:
Mr. R. Alexander Glenn Senior Resident Inspector Corporate Counsel Crystal River Unit 3 Florida Power Corporation U.S. Nuclear Regulatory Comission MAC-ASA 6745 N. Tallahassee Road P.O. Box 14042 Crystal River, Florida 34428 l
St. Petersburg, Florida 33733-4042 Mr. John P. Cowan i
Mr. Bruce J. Hickle, Director Vice President, Nuclear Production Nuclear Plant Operations (NA2C)
(SA2C) 4 Florida Power Corporation Florida Power Corporation Crystal River Energy Complex Crystal River Energy Complex l
15760 W. Power Line Street 15760 W. Power Line Street
]
Crystal River, Florida 34428-6708 Crystal River, Florida 34428-6708 Mr. Robert B. Borsum Regional Administrator, Region II l
B&W Nuclear Technologies U.S. Nuclear Regulatory Commission 1700 Rockville Pike, Suite 525 61 Forsyth Street, SW., Suite 23T85 Rockville, Maryland 20852 Atlanta, Georgia 30303-3415 i
Mr. Bill Passetti Mr. Kerry Landis Office of Radiation Control U.S. Nuclear Regulatory Commission l
Department of Health and 61 Forsyth Street, SW., Suite 23T85 Rehabilitative Services Atlanta, Georgia 30303-3415 1317 Winewood Blvd.
Tallahassee, Florida 32399-0700 Attorney General i
Department of Legal Affairs j
The Capitol Tallahassee, Florida 32304 4
i Mr. Joe Myers, Director j
Division of Emergency Preparedness i
Department of Community Affairs
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2740 Centerview Drive
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Tallahassee, Florida 32399-2100 1
Chairman j
Boat-
'ounty Commissioners Citru.
.Mity 110 North Apopka Avenue Iverness, Florida 34450-4245 Mr. David Kunsemiller, Director Nuclear Operations Site Support (SA2A)
Florida Power Corporation Crystal River Energy Complex 15760 W. Power Line Street Crystal River, Florida 34428-6708 s