ML20214J491

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Interim Significant Deficiency Repts 87-16 & 87-17 Re Conduit Sealing of 50 Class 1E Items.All Physical Work Re Re Environ Qualification Program Complete W/Exception of Four Bisco Seals
ML20214J491
Person / Time
Site: Beaver Valley
Issue date: 05/25/1987
From: Carey J
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
2NRC-7-142, 87-16, 87-17, TAC-62897, NUDOCS 8705280069
Download: ML20214J491 (4)


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'A Duqu@esne Light (412)393 7546 Beaver Valley No. 2 Unit Project Organization Telecopy 1412) 393-7889 SgGeoBl 8 2NRC-7-142 Shippingport, PA 15077 7

United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

SUBJECT:

Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Significant Deficiency Reports 87-16 and 87-17

REFERENCE:

2NRC-7-132, dated May 13, 1987 Gentlemen This letter provides information regarding the above Significant Deficiency Reports (SDR's) on conduit sealing of 50 BVPS-2 Class lE items as mentioned in the reference. The attached information indicates that (1) The nineteen (19) RDF RTD's were not affected by these SDR's, (2) The four (4) Reed position indicators on the pressurizer PORV's (2 indicators per PORV) now have an alternate qualified sealing method installed, (3) For the ten (10) Target Rock SOV's inside containment, the installation of qualified seals has been completed. The seals located outside containment are now installed in accordance with the existing installation specification.

The above information and attachment is provided to address recent NRC concern on Significant Deficiency Reports 87-16 and 87-17. As indicated in the reference, a written report on these items will be provided to the NRC.

This completes all physical work associated with the Environmental Qualification Pr] gram with the exception of four (4) Bisco Seals around cable terminations to be located at the reactor vessel head solenoid operated vent valves 2RCS*SOV200A&B and 201A&B. The reactor vessel head must be in place prior to final determination of the conductor length and determining the exact location of the seal. This activity will be completed during Mode 5 and prior to entering Mode 4 - Hot Shutdown at the completion of initial core loading. Reactor remote head venting capability is not needed prior to this time.

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o United States Nuclear Regulatory Commission Mr. Harold R. Denton Significant Deficiency Reports 87-16 and 87-17 Page 2 The completion of all documentation associated with the Environmental Qualification Program was certified in our letter 2NRC-7-132 dated May 18, 1987.

Should there be any questions regarding the above, please contact our Mr. K. E. Woessner at 412/393-7739.

DUQUESNE LIGHT COMPANY J. J. Carey Vice President, Nuclear Group KEW/ bib MCE/KEW/SIG/DEF AR/NAR Attachment cc: Mr. P. Tam, NRC Project Manager Mr. J. Beall, NRC Sr. Resident Inspector Dr. T. E. Murley, NRC Region I Administrator INPO Records Center

United States Nuclear Regulatory Connission Mr. Harold R. Denton Significant Deficiency Reports 87-16 and 87-17 i Page 3 ..

COMMONWEALTH OF PENNSYLVANIA )

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COUNTY OF BEAVER )

On this I [ day of [hleV , /((7 , before me, a Notary Public in and for said Commondalth and County, personally appeared J. J. Carey, who being duly sworn, deposed and said that (1) he is Senior Vice President of Duquesne Light, (2) he is duly aut.horized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set forth in the Submittal are true and correct to the best of his knowledge, flLA.lt2/ kh itMd

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Attachment This attachment provides a brief description of BVPS-2 equipment items relative to Significant Deficiency Reports 87-16 and 87-17. ,

SDR 87-16 involves installation of BISCO LOCA SEAL (conduit sealant) over braided wires as a deviation from field installation specifications. SDR 87-17 involves installation of conduit seals for PORV position indicators without SQC verification of graphoil tape installation.

The effect of these SDR's on DVPS-2 Equipment is discussed below.

19 RDF RTDS (SDR 87-16) (Inside Containment)

The method of conduit sealing of the RTD's does employ the j pouring of BISCO LOCA SEAL over inline butt splices, covered with Raychem sleeves, not continuous braided wire. This sealing method is in accordance with field installation specification 931 and is acceptable and qualified for BVPS-2 applications.

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27 Target Rock SOV's (SDR 87-16) (Inside/Outside Containment)

Target Rock SOV's have been installed with BISCO LOCA SEAL (conduit sealant) poured and set over braided wires. This installation is not in strict accordance with field specification 931. Ten affected SOV's inside containment have been reworked and now comply with the specification. Although the "as

installed" (BISCO over braided wire) is acceptable for SOV's installed outside containment due to low pressure (< l.00 psi) accident conditions, DLC has decided to rework the conduit seals to be in strict accordance with the field installation specification. All rework has now been completed. Only, the four seals associated with the reactor vessel head vent remain to l be installed.

4 Reed Position Indicators (SDR 87-17) (Inside Containment)

The SOC verification of graphoil tape on 4 conduit connections (2 connections each on PORV 2RCS*RV551A and 2RCS*RV551C had not been made as documented by N&D 39292. An alternate qualified seal has been provided and installed per N&D 39292 Rev. A disposition on all 4 of these indicators.

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