ML20210P550

Provides List of Locations Where Specific Deviations from FSAR Separation Criteria for Control Panel Wiring Observed, in Response to Util 821104 Request

ML20210P550
Person / Time
Site:	Diablo Canyon
Issue date:	11/30/1982
From:	Krechting J STONE & WEBSTER ENGINEERING CORP.
To:	Harold Denton, Engelken R, Maneatis G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V), Office of Nuclear Reactor Regulation, PACIFIC GAS & ELECTRIC CO.
Shared Package
ML20209B723	List: ML20209B717 ML20209B726 ML20210P155 ML20210P192 ML20210P260 ML20210P450 ML20210P482 ML20210P515 ML20210P536 ML20210P550 ML20210P557 ML20210P575 ML20210P591
References
FOIA-86-151 DCS-177, NUDOCS 8702130415
Download: ML20210P550 (6)

Text

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V ACGehr JRoesset Mr. G.A. Manmatis Senior Vice President November 30, 1982 Far411 ties Development J.O. No. 14296 Pacific Gas and Electric Company DCS-177 77 Beale Street San Francisco, CA 94106 Mr. H.R. Denton, Director

' Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 7920 Norfolk Avenus Bethesda, MD 20114 Mr. R.H. Enga n=a, Regional Administrator Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suita 210 Walnut Creek, CA 94956 Docket No. 50-275 Diablo Canyon Unit 1 License No. DPR-76 Dear Sirst CONTROL PANEL WIRING SEPARATION REQUEST POR INFORMATION l

T m nTNE ENGINEERING SERVICES l

DIABLO CANTON NUCLEAR POWER PLANT - UNIT 1 l

PG&E requested additional information on EDI 8057 at the IDVP/DCP meeting on l

. November 4, 1982. The additional information requested was for a list of specific _

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deviations ftom FSAR separation criteria for control panel wiring. The following list provides locations where specific deviations were observed. Field verification t

i of panels was limited to random sampling (within) each of the associated panels of l

the systems under review, therefore, there may be other instances of separa-l tion critaria violations within the same as well as other panels.

l Separation Criteria Location of Violation A.

Circuits of mutually redundant l'. Control relay cabinet No. 2 systems shall not be connected 2.

Control room ventilation auxiliary to the same terminal block relay panel 8702130415 870203 PDR FOIA y

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Separation Criteria Location of Violation B.

Exposed wiring at and connections 1.

Ect shutdown panel to devices and instruments shall 2.

Main control board VB-3 be separated by at least 5 inches 3.

Main feedpump control panel 4.

Control room ventilation chlorine and radiation monitor rack 5.

Control room ventilation auxiliary relay panel C.

Mutually redundant circuits in 1.

Hot shutdown panel panels shall be separated by one 2.

Main feedpump control panel of the eight methods listed in 3.

Control room ventilation and radiation FSAR section 8.3.3 monitoring panel b

If'you have any questions concerning the above, please do not hesitate to contact me.

Very truly yours, b

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h echt roject Engineer, Diablo Canyon Nuclear Power Plant 4

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/HSchierling (2) b ACGehr JRoesset Mr. G.A. Maneatis, Senior Vice President November 30, 1982 Pae414 ties Development J.O. No. 14296 Pacific Gas and Electric Company DCS-177 77 Beale Street San Francisco, CA 94106 Mr. B.R. Denton, Director Office of Nuclear Reactor Regulation U.S. lenet... Regulatory Co e sion 7920 Norfolk Avenue Bethesda, MD 20114 Mr. R.R. Eng=11==, Regia==1 Administrator Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, CA 94956 Docket No. 50-275 Diablo Canyon Unit 1 License No. DPR-76

Dear Sirs:

CONTROL PANEL WIRING SEPARATION REQUEST POR INFORMATION TELEDYNE ENGINEERING SERVICES DIABLO CANYON NUCLEAR POWER PLANT - UNIT 1 PG&E requested additional information on EDI 8057 at the IDVP/DCP meeting on November 4, 1982. The additional information requested was for a list of specific -

deviations from FSAR separation criteria for control panel wiring. The following list provides locations where specific deviations were observed. Field verificatlon of panels was limited to random sampling (within) each of the associated panels of l

the systems under review, therefore, there may be other instances of separa-tion criteria violations within the same as well as other panels.

l Separation Criteria Location of Violation A.

Circuits of mutually redundant l'. Cotitrol relay cabinet No. 2 i

systems shall not be connected 2.

Control room ventilation auxiliary to the same terminal block relay panel 1d

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Separation Criteria Location of Violation B.

Exposed wiring at and connections 1.

Hot shutdown panel to devices and instruments shall 2.

Main control board VB-3 be separated by at least 5 inches 3.

Main feedpump control panel 4.

Control room ventilation chlorine and radiation monitor rack 5.

Control room ventilation auxiliary relay panel C.

Mutually redundant circuits in 1.

Hot shutdown panel panels shall be separated by one 2.

Main feedpump control panel of the eight methods listed in 3.

Control room ventilation and radiation FSAR section 8.3.3 monitoring panel If 'you have any questions concerning the

above, please do not hesitate to contact me.

Very truly yours,

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scht oject Engineer, Diablo Canyon Nuclear Power Plant i

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P105-4 December 1, 1982 Mr. Roy Fray Diablo Canyon Verification Coordinator Pacific Gas and Electric Company 45 Fremont Street 23rd Floor, Section A-17 San Francisco, CA 94105

Dear Mr. Fray:

Enclosed please find a proposed agenda for the first IDVP design office verification.

This verification will be limited to the

. control of spectra within the DCP mechanical group.

For administrative and scheduling purposes, the date and topic

-.have been discussed with E. Connell, III dnd yourself from the DCP, W. Cooper from TES and P. T. Kuo and J. Knight from the NRC.

Your confirmation of the proposed date is awaited.

Since ely yours,

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EdwardDenison(

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W. Cooper F. Sestak R. Reedy H. Schierlit.g v' J. Knight P. T. Kuo Enclosure q7,Y I

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IDVP Desion Office Verification

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Date: December 20, 1982

~ Time: 9:00 AM to 12:00 PM, 1:00 PM to 5:00 PM Place: DCP Offices, San Francisco Purpcse:- RLCA will conduct the first IDVP Design office Verification in accordance with ITR #8 (Verification Program for PGandE Corrective

• Action),. Revision G.

Subject:

This design. office verification will~be limited to the mechanical group's control of.the Hosgri (DCM C-17, Revisions 0 through 4)' and non-Hosgri (DCM C-25, Revision 0 and DCM C-30, Revisions 0 and 1) spectra. This includes seismic inputs into qualification analyses and discussions with supervisors and engineers responsible for the work. These discussions will focus

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solely on technical interface control.

Completed work to be examined:

Calculation M-144, Revisions 0 and 1 (DCM C-17, Revisions 0 and 1).

In progress work to be examined:

M-144 type calculations for DCM C-17, Revisions 2.through 4, DCM C-15, Revision 0, and DCM C-30, Revisions 1 and 2.

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