ML20035E778

Forwards Response to GL 92-08 Re Thermo-Lag 330-1 Fire Barriers.List of Commitments as Result of Submittal Also Encl

ML20035E778
Person / Time
Site:	Sequoyah
Issue date:	04/15/1993
From:	Fenech R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-92-08, GL-92-8, NUDOCS 9304190236
Download: ML20035E778 (20)

Text

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i Temssee vawy autnoniy post once 80,2aao swey ovsy. Te,nessee 3 37>2000 April 15, 1993 Robert A. Fenech Vece Presioent. Sequoyah % clear Plant l

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l U.S. Nuclear Regulatory Commission l

ATlW: Document Control Desk i

l Washington, D.C. 20555 Gentlemen:

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In the Matter of

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Docket Nos. 50-327 Tennessee Valley Authority

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50-328 SEQUOYAH NUCLEAR PLANT (SQN) - GENERIC LETTER (GL) 92 THERMO-LAG 330-1 FIRE BARRIERS i

The purpose of this letter is to provide TVA's response for SQN to the subject GL. provides a detailed response to each requested item. A list of commitments made as a result of this submittal is provided in Enclosure 2.

Please direct questions concerning this issue to W. C. Ludwig at (615) 843-7460.

i Sincerely,

<. A i

Robert A. Fenech Sworn to and subscr bed before me I

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this / FIN day of..

1993

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Notary Publ'ic

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My Commission Expires

/f/97 j*'

t 1900Gi-m 9304190236 930415 t

PDR ADOCK 05000327 P

PDR ff f.

U. S. Nuclear Regulatory Commission Page 2 April 15, 1993 Enclosures cc (Enclosures):

i Mr. D. E. LaBarge, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North i

11555 Rockville Pike t

Rockville, Maryland 20852-2739 a

NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road

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Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission i

Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-0199 i

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i ENCLOSURE 1 i

SEQUOYAH NUCLEAR FIANT (SQN) UNITS 1 AND 2 f

RESPONSE TO NRC GENERIC LETTER (GL) 92-08 THERMO-LAG 330-1 FIRE BARRIERS I

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The following is a direct response to each reporting requirement listed in NRC GL 92-08.

Reporting _ Requirement:

"1.

State whether Thermo-Lag 330-1 barriers are relied upon (a) to meet 10 CFR 50.48, to achieve physical independence of electrical l'

systems, (b) to meet a condition of a plant's operating license, or (c) to satisfy a licensing commitment.

If applicable, state that l

Thermo-Lag 330-1 is not used at the facility. This generic letter applies to all 1-hour and all 3-hour Therno-Lag 330-1 materials and barrier systems assembled by any assembly m thod such as by j

assembling preformed panels and conduit shapes, as well as spray, trowel and brush-on applications."

Ress nEni Item 1.(a)

Thermo-Lag 330-1,1-hour barriers have been installed at SQN Units 1 and 2 and are relied upon to meet nuclear power plant fire-protection requirements for electrical systems as specified in 10 CFR 50.48.

The material has been used to achieve compliance with 10 CFR 50, Appendix R, Section III.G requirements for SQN Units 1 and 2.

No 3-hour-rated, Thermo-Lag fire barriers have been installed at SQN.

Item 1.(b)

Thermo-Lag 330-1 fire barriers are utilized to meet License Condition 2.0 (13) e of SQN Unit 2 operating license.

License Condition 2.C (13) c requires compliance with Sections III.G, III.J, III.L, and III.0 of Appendix R of 10 CFR 50, except where.the NRC has approved deviations, on a schedule consistent with that required for y

other operating reactors.

This condition was not included in the Unit 1 operating license.

Item 1.(c)

TVA is committed in Reference 3 to comply with the same 10 CFR 50 Appendix R, sections and conditions as described above in the Item 1.(b) response. This commitment applies to both Units 1 and 2.

REDRI11pg Requireman11 r

"2.

If Thermo-Lag 330-1 barriers are used at the facility, (a) State whether or not the licensee has qualified the Thermo-Lag 330-1 fire barriers by conducting fire endurance tests in accordance with the NRC's requirements and guidance or licensing commitments."

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i Resoonse:

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l Item 2.(a)

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f TVA has not qualified the Thermo-Lag 330-1 Iire barriers installed at SQN j

I by conducting fire endurance tests in accordance with NRC's_ requirements and guidance or licensing commitments.

Instead, TVA procured, reviewed, l

and relied upon the vendor's acceptance tests supplied by Thermal Science l

Incorporated (TSI) and training for TVA insulators as part of-the Thermo-Lag contract. At the time of procurement.and installation, this l

practice was considered acceptable, and IVA believed that the barriers had been qualified-to existing NRC guidance.

References 1 and 2 provided TVA responses to NRC Bulletin 92-01 and NRC

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Bulletin 92-01, Supplement 1, respectively. These responses affirmed the i

installation of Thermo-Lag 330-1 fire barriers.

Included in the i

referenced responses was information on the development of an industry l

program being coordinated by NUMARC to verify or restore fire barrier' l

operability. The industry program will' establish a test data base, j

develop generic installation guidance, and coordinate additional testing j

as appropriate. The option of TVA developing its own program for resolution of the Thermo-Lag issue was mentioned in the referenced l

responses.

Ir. these bulletin responses, TVA committed to apply the results of the TVA-developed. program or the industry program being coordinated by NUMARC'to the.Thermo-Lag installations.

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TVA is currently conducting fire endurance testing of Thermo-Lag 330-1.

j fire barriers at Omega Point Laboratories in San Antonio, Texas.. This i

testing is being perfomed in accordance with Watts Bar Nuclear Plant's (WBN) position on electrical fire barrier testing as previously presented to NRC.

Testing to this point has included WBN's configurations of j

1-hour fire barriers; where it is determined to be appropriate, TVA will j

apply the results of this testing at SQN.-

Preliminary test results indicate that the acceptance criteria were satisified for the 1-hour, l

Thermo-Lag fire barriers installed on 4-inch and 5-inch conduits.

Additionally, testing on fire barriers for smaller conduit sizes with barrier configurations cor.sisting of additional 3/8-inch-thick, preshaped sections over 5/8-inch sections has indicated positive results.

Emporting Requirement:

"2.

o) State (1) whether or not the fire barrier configurations installed in the plant represent the materials, workmanship, methods of assembly, dimensions, and configurations of the qualification test assembly configurations; and (2) whether or

'not the licensee has evaluated any-deviations from the' tested configurations."

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e Rttspans.el-Item 2.(b)(1)

The Thermo-Lag 330-1 fire barriers installed at SQN represent the materials, workmanship, method of assembly,. dimensions, and configurations of the qualification test assembly configurations ~provided l

in TSI Technical Note 20684, "Thermo-Lag 330 Fire Barrier System l

Installation Procedures Manual Power Generating. Plant. Applications, j

Revision V, November 1985." Deviations to TSI Technical Note 20684 are addressed in the response to Item 2.(b)(2).-

l Fire barrier installation work relied exclusively on this TSI. instruction manual for fire barrier configuration, assembly methods, and material i

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. requirements. These modifications were required to achieve Appendix R I

J general compliance at SQN.

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Materials purchased by TVA included 1-hour-rated. Thermo-Lag 330-1 preformed conduit shapes; preformed panels; and subliming trowel grade'

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material. TSI fire barrier materials and installation methods' have been l

used exclusively for fabrication of 1-hour-rated conduit and cable tray

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I fire barrier systems at SQN.

Additionally, the purchase contract for the aforementioned material j

included the requirement for furnishing the services of a TSI engineer to i

supervise and/or train field personnel in the installation of TSI Thermo-Lag fire" barriers. - TVA-installation and inspection personnel were provided certification training on proper installation techniques by the TSI engineer. TVA personnel that installed the Thermo-Lag 330-1 fire l

barrier systems were trained and certified by TSI.

Estapsnsel Item 2.(b)(2)

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TVA has'not evaluated deviations from the tested fire barrier configurations and installation methods provided by TSI. When deviations 5

from the configurations detailed in the TSI instruction manual were required during installation, they were transmitted to TSI for t

evaluation. Results of these evaluations were documented by TSI, addressing the particular deviation requested by TVA.

j Reporting Requirement:

i "2.

(c) State (1) whether or not the as-built Thermo-Lag 330-1 barrier j

configurations are consistent with the barrier configurations used'during the ampacity derating tests relied upon by the' licensee for the ampacity derating factors used for all raceways protected by Thermo-Lag 330-1-(for fire protection of safe shutdown capability or to achieve physical independence of electrical systems) and (2) whether or not the ampacity.

derating test results relied'upon by the licensee are correct and applicable to the plant design."

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EenpDDSRI Item 2.(c)(1)

The as-built, 1-hour, Thermo-Lag 330-1 conduit fire barrier configurations at SQN are similar to the barrier configuration used during the ampacity derating test documentation provided by TSI to TVA in the original purchase contract. This ampreity test report supplied by TSI is Technical Note 111781, " Engineering Report on Ampacity Test f or 600 Volt Power Cables Installed In A Five Foot Length of Two Inch Conduit Protected With Thermo-Lag 330-1 Subliming Coating Envelope System." The conduit in the above test was coated with 1/2-inch-minimum dry film thickness of Thermo-Lag 330-1 subliming coating. Whereas, the SQN

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conduits are protected with 1-hour-rated, preformed conduit shapes or 1/2-inch-thick preformed panels. Based on TS1 Technical Note 20684, the trowel coating used in the test is identical to the preformed shapes after it has cured.

l Item 2.(c)(2)

At the time of procurement and installation, TVA believed the ampacity j

derating test results were correct and applicable to the plant design.

The results of these tests were supplied by TSI and documented in TSI Technical Note 111891. Since the receipt of Thermo-Lag ampacity derating factors and subsequent test results, concerns have been raised and TVA

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has initiated in-house testing to independently verify the adequacy of Thermo-Lag installations in regard to cable ampacity. Preliminary test results indicate cable ampacities are consistent with industry guidance, however, a final determination has not been made at this time.

Reportine Requirement:

"3.

With respect to any answer to items 2(a), 2(b), or 2(c) above in the negative, (a) describe all corrective actions needed and include a schedule by which such actions shall be completed and (b) describe all compensatory measures taken in accordance with the technical specifications or administrative controls. When corrective actions have been completed, confirm in writing their completion."

Response

Item 3.(a)

As stated in response to item 2(a), TVA has not independently qualified the 1-hour-rated, Thermo-Lag fire barriers installed at SQN.

Originally, fire endurance test reports supplied by TSI were reviewed and relied upon for qualification of the fire barriers.

The corrective actions needed to qualify Thermo-Lag installations at SQN have not been determined at this time. However, information obtained from the industry program being coordinated by NUMARC and independent testing being conducted on the WEN Thermo-Lag installations will be utilized as appropriate to verify or restore operability to the installed Thermo-Lag 330-1 fire barrier systems at SQN.

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! j TVA will evaluate the results of the independent testing at WBN and the i

NUMARC industry-generic testing programs for fire testing and cable l

ampacity and will provide a corrective action schedule for SQN within 120 i

days following receipt of the NUMARC test results..

P Item 3.(b) l As previously reported in TVA's responses to NRC Bulletin 92-01 and l

Supplement 1 to that bulletin, TVA has an hourly, fire watch patrol j

program in place that includes the required conduits and cable trays l

protected by Thermo-Lag.

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Reporting Requirementi

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"4.

List all Thermo-Lag 330-1 barriers for which answers to item 2-cannot be provided in the response due within 120 days from the date of this' generic letter, and include a schedule-by which answers 3

shall be provided."

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Resppasel i

Item 4 l

A detailed listing of the installed Thermo-Lag 330-1 fire barrier systems at SQN is attached as part of this enclosure. As previously discussed in l

the response to 3.(a), TVA will provide a corrective action schedule within 120 days following receipt of the NUMARC test'results.

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References:

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IVA letter to NRC dated September 30, 1992, " Response to NRC Bulletin

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92-01, Supplement 1, Failure of Thermo-Lag Fire Barrier System to~

Perform Its Specified Fire Endurance Function, Sequoyah Nuclear Plant l

(SQN) and Browns Ferry Nuclear Plant (BEN)"

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TVA letter to NRC dated July 31,-1992, " Response to NRC Bulletin 92-01, ' Failure of Thermo-Lag 330 Fire Barrier System to Maintain-Cabling in Wide Cable Trays and Small Conduits Free From Fire Damage'

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- Sequoyah Nuclear Plant (SQN) and Browns: Ferry Nuclear Plant (BFN)"

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Letter from L. M. Mills, TVA, to H. R. Denton, NRC, dated May 26, 1981 l

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i CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R No.

4A-1PL 4982 B 4

Same 749-A7 38/39 091-1 4A-1PL 4985 B 4

Same 749-A7 38/39 091-1 41-1PP 750 A 4

Same 749-A7& ABA 38/39 091-1 41-IPP 759 A 4

Same 749-A7& ABA 38/39 091-1 4A-1PL 4982 B 4

Same 759-Al 38/39 091-2 4A-1PL 4985 B 4

Same 759-Al 38/39 091-2 749-A10 38/39 091-3 4A-2PL 4978 A 4

Same 4A-2PL 4975 A 4

Same 749-A10 38/39 091-3 4A-PP 590 B 4

Same 749-A16 38/39 091-3 4A-PP 591 B 4

Same 749-A16 38/39 091-3 4A-2PL 4975 A 4

Same 759-A3 38/39 091-4 4A-2PL 4970 A 4

Same 759-A3 38/39 091-4 PN-A, PO-A, PM-A 4X18 B774 734-Al 38/39 092-1 Tray 4A-1PP 762 B 4

Same 734-A2 38/39 092-1 4A-1PP 753 B 4

Same 734-A2 38/39 092-1 4A-1PP 765 B 4

Same 734-A2 38/39 092-1 2.5A-1B 29 II 2.5 1B 25II/1B 30II 734-A4 38/39 092-1 l

4A-2PP 759 A 4

Same 734-A24 38/39 092-3 4A-2PP 750 A 4

Same 734-A24 38/39 092-3 4A-2PP 756 A 4

Same 743-A24 38/39 092-3

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2.5I-23 20 III 2.5 2B11 III/

734-A22 38/39 092-3 2B16 III PO-A B77A 734-Al 38/39 092-3 3A-MC 1130 A 3

PP302A, PP304A, 714-Al 38/39 093-1 PP306A, PP310A, PP312A, PP328A 4I-2PP 785 B 4

Same 690-Al 38/39 094-1 4I-1PP 785 B 4

Same 690-Al 38/39 094-1 11-1V 4005 B 1

IV2100B 734-A2 1,2,4, 102-1 5,6&9 lI-1V 4009 B 2

1V2101B,1V2103B 734-A2 1,2,4, 102-1 1V2771B,1V2774B 5,6&9

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CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

PN-A IV207-5A,2763A, 734-Al 1,2,4, 102-1 PM-A 1PL6127A 5,6&9 l

3A-2PL 4734 B 3

Same 734-A9 1,2,4, 102-1 5,6&9 3R-2P 4733 B 3

Same 734-A9 1,2,4, 102-1 5,6&9 l

4 21-1PV 150 II 2

1PV135II 714-Al 1,2,4, 103-1

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5,6&9 2I-1PV 30 I 2

1PV161 714-Al 1,2,4, 103-1 5,6&9 1.5I-1V 4008 B 1.5 1V2103B 714-Al 1,2,4, 103-1 i

IV2771B 5,6&9 l

lI-1V 4005 B 1

1V2100B 714-Al 1,2,4, 103-1 5,6&9 i

IV 4009 B 2

IV2101B,1V2103B 714-Al 1,2,4, 103-1 IV2774B 5,6&9 21-1V 4007 B 2

1V2101B,1V2774B 714-Al 1,2,4, 103-1 5,6&9 2I-IV 4007 B 2

1V2101B,1V2774B 714-Al 1,2,4, 103-1 5,6&9 lI-1PL 3011 B 1

Same 714-Al 1,2,4, 103-1 5,6&9 lI-1PL 3013 B 1

Same 714-Al 1,2,4, 103-1 5,6&9 lI-1PV 255 III 1

Same 714-Al 1,2,4, 103-3 5,6&9 i

11-1PL 3011 B 1

Same 690-A26,A24 1,2,4, 104-1 A1 5,6&9 11-1PL 3013 B 1

Same 690-A26,A24 1,2,4, 104-1 A1 5,6&9 11-1V 4003, A 1

1V4001A 690-A1,A2 1,2,4, 104-1 &

A9 5,6&9 104-2 1.51-1PP 564 B 1.5 Same 690-Al 1,2,4, 104-1 5,6&9 4I-1PP 562 B 4

Same 690-A1, 1,2,4, 104-1 &

669-Al 5,6&9 105-1 1.51-1PL 3018 B 1.5 1PL3013B 690-Al 1,2,4, 104-1 1PP564B 5,6&9

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CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

2.5A-1PL 4725 A 2.5 Same 690-Al 1,2,4, 104-1 i

5,6&9 2.5A-1PL 4726 A 2.5 Sane 690-Al 1,2,4, 104-1 5,6&9 1A-1PL 4731 A 1

Sane 690-Al 1,2,4, 104-1 5,6&9 4

II-IV 4002 B 1

1V4000B 690-Al &

1,2,4, 104-1 &

A7 5,6&9 104-2 11-1V 4004 B 1

1V2774B 690-Al 1,2,4, 104-1 &

5,6&9 104-2 31-1PL 3130 B 1

1V2774B 690-Al &A6 3,2,4, 104-1 &

5,6&9 104-2 1.5I-1V 2045 B 1.5 1V2101B 690-Al &A6 1,2,4, 104-1 &

IV2777B 5,6&9 104-2 2I-1V 2009 B 2

IV2100B 690-Al &A6 1,2,4, 104-1 &

5,6&9 104-2 11-1V 2774 B 1

Same 690-A6 &

1,2,4, 104-2 A9 5,6&9 1.51-1PL 3018 B 1.5 1PL3013B 669-Al 1,2,4, 105-1 1PP564B 5,6&9 lI-1PL 3011 B 1

Sane 669-Al 1,2,4, 105-1 5,6&9 PO-A*

4X18 2V2075A 734-Al 1,2,3, 112-1 Tray 2V2763A 4,5,6&

2PL6127A 9

3A-2PL 4734 B 3

Sane 734-A9 1,2,3, 112-1

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4,5,6&

9 3A-2PL 4733 B 3

Same 734-A9 1,2,3, 112-1 4,5,6&

9 PO-A*

4X18 2V2075A 734-Al 1,2,3, 112-3 Tray 2V2763A 4,5,6&

2PL627A 9

11-2V 4014 A 1

2V2070A 734-A24 1,2,3, 112-3 4,5,6&

9 2V 4016 A 3

2V203A 734-A25 1,2,3, 112-3 2V2073A 4,5,6&

2V2761A 9

2V2764A

CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

PO-A*

4x18 2V2075A 734-A27 1,2,3, 112-3 Tray 2V2763A 4,5,6&

2PL6127A 9

2PV 150 II 2

2PV135II 714-Al 1,2,3, 113-1 4,5,6&

9 2PV 30 1 2

2PV161 714-Al 1,2,3, 113-1 4,5,6&

9 2V 4015 A 2

2V2073A 714-Al 1,2,3, 113-3 2V2761A 4,5,6&

9 11-2V 4014 A 1

2V2070A 714-Al 1,2,3, 113-3 4,5,6&

9 l21-2V 4012 A 2

2V2071A 714-Al 1,2,3, 113-3 2V2704A 4,5,6&

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3I-2V 4016 A 3

2V2073A 714-Al 1,2,3, 113-3 2V2761A 4,5,6&

2V2071A 9

2V2764A 11-2PL 3001A 1

Same 714-Al 1,2,3, 113-3 4,5,6&

9 lI-2PL 3003 A 1

Same 714-Al 1,2,3, 113-3

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4,5,6&

9 2PV 255 III Same 714-Al 1,2,3, 113-3 4,5,6&

9 4I-2PP 550 A 4

Same 690-Al 1,2,4, 114-1 5,6&9 1.5I-2PP 552 A 1.5 Same 690-Al 1,2,4, 114-1 5,6&9 3A-2PM 2094 III 3

2PM1086 III 690-Al 1,2,4, 114-3 5,6&9 i

CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

3A-2PM 2080 III 3

2PM1041I 690-Al 1,2,4, 114-3 5,6&9 3A-2PM 2087 II 3

2PM1071II 690-Al 1,2,4, 114-3 5,6&9 l

4I-2PP 550 A 4

Same 690-Al 1,2,4, 114-3 (A18) 5,6&9 1.5I-2PP 552 A 1.5 Same 690-Al 1,2,4, 114-3 (A18) 5,6&9 l

11-2V 4006 B 1

2V2774B 690-Al 1,2,4, 114-3 (A18) 5,6&9 1.5I-2V 4004 B 1.5 2V2774B 690-Al 1,2,4, 114-3 2V4000B (A18) 5,6&9 lI-2PL 3003 A 1

2PL3008A 690-Al 1,2,4, 114-3 (A18) 5,6&9 1.5I-2PL 3008 A 1.5 2PL3003A 690-Al 1,2,4, 114-3 2PP552A (A18) 5,6&9 lI-2PL 3001 A 1

Same 690-Al 1,2,4, 114-3 (A18) 5,6&9 i

21-2V 4012 A 2

2V2071A 690-Al 1,2,4, 114-3 2V2764A (A18) 5,6&9 2I-2V 4011 A 2

2V2071A 690-Al 1,2,4, 114-3 l

2V2764A 5,6&9 2V4001A j

1.51-2V 4009 A 1.5 2V4001A 690-Al 1,2,4, 114-3 l

2V2764A 5,6&9 2V 4010 A 2

2V2071A 690-Al 1,2,4, 114-3 5,6&9 lI-2V 4013 A 1

2V4001A 690-Al 1,2,4, 114-3 5,6&9 3A-2V 2034 A 3

2V2071A 690-A19 1,2,4, 114-4 2V2767A 5,6&9 1.51-2V 1995 A 1.5 2V2070A 690-A19 1,2,4, 114-4 i

5,6&9 1.5I-2V 4009 A 1.5 2V4001A 690-A20 1,2,4, 114-4 2V2764A 5,6&9 1.5I-2V 4004 B 1.5 2V2774B 690-A20 1,2,4, 114-4 2V4000B 5,6&9

d CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

PO-A 734-Al 4 &5 122-1 PN-A PM-A lI-IV 4005 B 1

1V2100B 734-A2 4 &5 122-1 1V 4009 B IV2101B 734-A2 4 & 5 122-1 1V2103B IV2771B f

IV2774B PO-A 734-Al 4 & 5 122-3 1.5I-1V 4008 B 1.5 1V2103B 714-Al 4 &5 123-1 IV2771V

)

IV 4009 B 1V2101B 714-Al 4 &5 123-1 1V2103B i

IV2771B IV2774B 11-1V 4005 B 1

1V2100B 714-Al 4 &5 123-1 21-1V 4007 B 2

1V2101B 714-Al 4 & 5 123-1 IV2774B i

II-IV 4003 A 1

1V4001A 690-Al & A9 4 & 5 124-1 2I-IV 2009 B 2

1V2100B 690-Al 4 & 5 124-1 1.5I-1V 2045 B 1.5 1V2101B 690-Al 4 &5 124-1 IV2777B llI-IV4002B 1

1V4000B 690-Al 4 & 5 124-1 lI-IV 4004 B 1

1V2774B 690-Al 4 & 5 124-1

!31-1PL3130B 3

1V2774B 690-Al 4 &5 124-1

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lI-IV 4002 B 1

IV4000B 690-A6 & A7 4 &5 124-2 l1.51-1V2045B 1.5 3V2101B 690-A6 4 &5 124-2 l

IV2777B 21-1V 2009 B 2

1V2100B 690-A6 4 &5 124-2 ij3I-1PL 3130 B 3

1V2774B 690-A6 4 &5 124-2 llI-IV2775B 1

Same 690-A6 4 &5 124-2 PO-A 4X18 2V2763A 734-Al 4 &5 132-1 Tray 2V2075A PO-A 4X1B 2V2763A 734-Al 4 & 5 132-3 Tray 2V2075A II-2V 4014 A 1

2V2070A 734-A24 4 &5 132-3

CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX i

CABLES R NO.

3I-2V 4016 A 3

2V2071A 734-A24 4 &5 132-3 2V2761A 2V2073A 2V2764A j

2V 4015 A 2

2V2073A 714-Al 4 &5 133-3 2V2761A II-2V 4014 A 1

2V2070A 714-Al 4 & 5 133-3 2I-2V 4012 A 2

2V2071A 714-Al 4 &5 133-3 2V2764A l

31-2V 4016 A 3

2V2073A 714-Al 4 &5 133-3 l

2V2761A 2V2071A 2V2764A l

21-2V 4012 A 2

2V2071A 690-Al &

4 &5 134-3 2V2764A A18 II-2V 4006 B 1

2V2774B 690-Al &

4 &5 134-3 A18 lI-2V 4013 A 1

2V4001A 690-Al 4 &5 134-3 21-2V 4011 A 2

2V2071A 690-Al 4 & 5 134-3 l

2V2764A 2V4001A i

1.51-2V 4004 B 1.5 2V2774B 690-Al 4 &5 134-3 2V4000B I 3A-2V 2034 A 3

2V2071A 690-A19 4 &5 134-4 2V2767A 1.5I-2V 1995 A.

1.5 2V2070A 690-A19 4 &5 134-4 1.5I-2V 4009 A 1.5 2V4001A 690-A19 &

4 &5 134-4 2V2764A A20 1.51-2V 4004 B 1.5 2V2774B 690-A19 &

4 & 'S 134-4 2V4000B A20 PO-A 734-Al 7&8 142-1 f

PN-A PM-A l

PO-A 734-Al 7 & B 142-3 PO-A 4X18 2V4425A 734-Al 7 & 8 152-1 Tray 2V4437A i

2V4477A j

I 2V4492A 2V4507A l

4 b

l CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX l

CABLES R NO.

f Same Same Same Same Same 152-3 PO-A 4X18 1V1020A 734-Al 11 202-1 Tray IV1028A thru IV1050A 16 1V1058A 1PV107A IISame Same Same Same Same 202-3 21-1PV 150 II 2

1PV135II 714-Al 11 203-l' thru 16 21-1PV 30 I 2

1PV16I 714-Al 11 203-1 thru 16 21-1PV 259 III 2

1PV254III 714-Al 11 203-3 l

thru 16 PO-A 4X18 2V1056A,2V1082A 734-Al 11 212-1 I

Tray 2V1062A, 2M811A thru 2V1085A,2V1084A 16 2V1065A,2V1064A 2V1063A,2PV107A l

2V1026A,2V1051A 2V1083A PM-A 4X18 Same 734-Al 11 212-1 Tray thru 16 PO-A 4X18 Same 734-Al 11 212-3 Tray thru r

16 2PV 150 II 2

2PV135II 714-Al 11 213-1 thru 17 l

2PV 30 I 2

2PV16I 714-Al 11 213-1 thru 17 2PV 267 III 2

2PV268III 714-Al 11 213-3 thru 17

!2I-1PV 150 II 2

1PV147II 714-Al 25&26 303-1 2I-1PV 30 I 2

1PV28I 714-Al 25&26 303-1 I

4 I

CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

2I-1PV 259 III 2

1PV254III 714-Al 25&26 303-3 2PV 150 II 2

2PV147II 714-Al 25&26 313-1 2PV 30 I 2

2PV28I 714-Al 25&26 313-1 2PV 267 III 2

2PV268III 714-Al 25&26 313-3 2PM 2084 I 2

2PM1335I 690-Al 26 314-3 2PM1474I 2PM15951 2PM1715I Box 749-A16 28 401-3 PM-A 4X18 1PP802A 734-Al 28 402-1 Tray IV5612A PN-A 4X18 1PP802A 734-Al 28 402-1 Tray PO-A 734-Al 28 402-3 II-IV 5596 B 1

Same 714-Al 28 403-1 2I-1PV 150 II 2

1PV135II 714-Al 28 402-1 i

2I-1PV 30 I 2

1PV16I 714-Al 28 403 1 1PV2BI 31-1PM 4996 II 3

1PM481II 714-Al 28 403-1 1PM480I Conduit Bank 749-A16 28 411-3

, Wrapped PO-A 4X18 2PP802A 734-Al 28 412-1 Tray 2V5612A PM-A 4X18 2PP802A 734-Al 28 412-1

~

Tray 2V5612A PO-A 4X18 2PP802A 734-Al 28 412-3 Tray 2V5612A l

2PV 30 I 2PV161, 2PV281 714-Al 28 412-1 2PV 150 II 2

2PV135II 714-Al 28 413-1

!11-2V 5610 A 1

Same 714-Al 28 413-3 3A-2PM 2087 II 3

2PM595II 690-Al 28 414-3 l

2PM6911I 2PM784II 2PM8761I 3A-2PM 2080 I 3

2PM591I,2PM6861 690-Al 28 414-3 2PM778I,2PM8711

4 CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

1 PO-A 734-Al 20 502-1 PN-A Thru PM-A 24 PO-A 734-Al 20 502-3 i

PN-A Thru PM-A 24 PO-A 2B40A, 2V7601A 734-Al 20 512-1 2V7611A,2V7621A Thru 2V7631A,2V7603A 24 2V7623A,2V7633A 2V7613A j

PN-A 4X18 734-Al 20 512-1 i

Tray Thru 24 PM-A 4X18 734-Al 20 512-1 Tray Thru 24 PO-A 4X18 2B40A, 2V7601A 734-Al 20 512-3 Tray 2V7611A,2V7621A Thru 2V7631A,2V7603A 24 2V7623A,2V7633A 2V7612A PN-A 4X18 734-Al 20 512-3 Tray Thru 24 PM-A 4X18 734-Al 20 512-3 Tray Thru

{

24 l1.51-1NM 155 I' 1.5 1NM1413I 734-Al 29 692-1 l

1NM1414I 1NM1415I l11-2NM199II 1

2NM1395II 734-A2 29 692-1 l31-1NM 38 I 3

1NM14161 734-A10 29 692-2 2A-MC 1309 II 2PV131II 714-Al 29 693-1 1PV1331I i

l 2A-MC 1289 II 2

1PV131II 714-Al 29 693-1 1PV133II 2.5A-MC 2546 II 2.5 1PV131II 714-Al 29 693-1 1PV133II 2A-MC 1309 II 2

2PV131II 714-Al 29 693-3 2PV133II l

l l

l l

CONDUIT SIZE SAFE SHUTDOWN ROOMS KEYS APPENDIX CABLES R NO.

II-1NM 199 II 1

1NM1395II 690-Al 29 694-1 1.5I-1NM 345 II 1.5 1NM1390II 690-Al 29 694-1 1NM1391II 1NM1392II l

PO-A 4X18 B77A 734-Al 1,3,19 792-1 Tray PO-A 4X18 B77A 734-Al 1,3,19 792-3 j

Tray 3A-MC 1130 A 3

PP328A 714-Al 1,3,19 793-1 41-1PP 700 B 4

Same 690-Al 1,3,19 794-1 4I-1PP 712 B 4

Same 690-Al 1,3,19 794-1 4I-2PP 700 B 4

Same 690-Al 1,3,19 794-1 l 41-2PP 712 B 4

Same 690-Al 1,3,19 794-1 V 1246 A 1PL4527A 734-A5 37A &

892-1 370 1PL 3258 A 1PL4501A 734-A5 37A &

892-1 370 l1pL 4500 A 1PL4900A 734-A5 37A &

892-1 l

l 370 i

l O

ENCLOSURE 2 I

COMMITMENT TVA will evaluate the results of the independent testing at Watts Bar Nuclear Plant, the NUMARC industry generic fire testing and cable ampacity testing programs, and also provide a corrective action schedule within 120 days following receipt of the NUMARC test results.

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n l

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