ML20127N943

Informs of 850521-23 Site Visit for Verification of Proper Implementation of Design Criteria Re Physical Identification,Separation & Independence of Redundant safety-related Electrical Sys.Proposed Agenda Encl

ML20127N943
Person / Time
Site:	Braidwood
Issue date:	05/14/1985
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Farrar D COMMONWEALTH EDISON CO.
References
NUDOCS 8505230656
Download: ML20127N943 (4)

Text

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• MAY 141985 Docket Nos. : STN 50-456 and -STN 50-457 Mr. Dennis L. Farrar Director of Nuclear Licensing Commonwealth Edison _ Company P. O. Box 767 Chicago,LIllinois 60690

Subject:

Site Visit to Braidwood Station, Units 1 and 2 A site visit to Braidwood Station is required, as specified in the Braidwood SER, for verification of proper implementation of the design criteria con-cerning physical identification, separation, and independence of redundant safety-related electrical systems..;;The site visit is scheduled for May 21 through 23, 1985, as previously discussed with the applicant. The proposed agenda for this visit is enclosed.

During the site visit, the areas listed on the agenda will be surveyed. Also, discussions will be held with the applicant and architect / engineer concerning the electrical cable. separation issues identified during the Braidwood Construction Appraisal 1 Team (CAT). inspection. The site visit will be concluded with an exit meeting where the NRC findings and follow-up actions, if any, will be summarized. For further information or clarification, contact the Braidwood Project Manager, J. A. Stevens -at (301) 492-7144.

l B. J. Youngblood, Chief i Licensing Branch.1 )

Division of-Licensing '

Enclosure:

Site Visit Agenda Distribution:

-tDocket Fuep~ JStevens NRC PDR OELD, Attorney

. Local PDR ACRS (16)

PRC System JPartlow NSIC BGrimes >

LB#1 R/F EJordan i

'MRushbrook cc: See next page LBf1/DLCO LB JStevensi/mac BJ lood 05//3/85 05 85 8505230656'850514 PDR ADOCK 05000456 A PDR

AIAY 141985 BRAIDWOOD Mr. Dennis L. Farrar 1 Director of. Nuclear Li. censing Commonwealth Edison Company Pest Office Box'767 Chicago, Illinois 60690 cc: Mr. William Kortier Ms. Lorraine Creek

' Atomic-Power Distribution Route 1, Box 182 Westinghouse Electric Corporation Manteno, Illinois 60950 Post Office Box 355 Pittsburgh, Pennsylvania 15230 Jane M. Whicher, Esq.

109 N. Dearborn Street Joseph Gallo, Esq. Chicago, Illinois 60602 Isham, Lincoln & Beale 1120 Connecticut Ave., N. W. Rebecca J. Lauer, Esq.

. Suite 840 Isham, Lincoln & Beale Washington, D. C. 20036 Three First National Plaza Suite 5200 C. Allen Bock, Esq. Chicago, Illinois 60602 Post Offices Box 342 Urbana,-Illinois 61801 Erie Jones, Director Illinois Emergency Services Thomas J. Gordon, Esq. and Disaster Agency Waaler, Evans & Gordon - 110 East Adams 2503 S. Neil- Springfield, Illinois 62705 Champaign, Illinois 61820 Ms. Bridget Little Rorem ,

Appleseed Coordinator .

117 North Linden Street Essex, Illinois 60935 Mr.' Edward R. Crass N0 clear Safeguards and Licensing Division Sargent & Lundy Engineers

• 55 East Monroe Street Chicago, Illinois 60603 U. S. Nuclear Regulatory Commission Resident Inspectors Office RRel, Box 79 Braceville, Illinois 60407 Mr. James G. Keppler U. S. NRC Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 e

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ENCLOSURE

. . BRAIDWOOD UNITS 1 AND 2 AGENDA SITE-VISIT

1. Control Room

a. General layout

.b. Diesel control board, D/G inoperable status alarm

c. Cabling in control room (separation)

d. ESF initiation and bypass switch arrangement and status panel-

e. Annunciator panel

'f. . DC. system monitoring and alarm

g. Nuclear and reactor protection instrument cabinet arrangement, separation and identi.fication 2.. Cable Runs and Cable Spreading

a. . General layout

b. Degree of separation

c. Tray or wireway density (percentage fill)

d. Penetrations and cable terminations

e. Identification of cables and raceways

3. Switch Gear Rooms

a. General. layout

b. Physical and electrical separation or redundant units

c. Cable installation .

4. Battery and Charcer Installations -

a. -General layout

b. Physical and electrical separation c - Ventilation independence

d. Monitoring instrumentation and alarms

5. Di'esel Generator .

a. General layout

b. Physical and electrical separation of redundant units

c. Fuel supply systems

d. D/G local control panels, instruments and control

e. ' Auxiliary systems-starting air, combustion air, ventilation, engine cooling

6. Switch Yard 1

a. General layout

b. Physical and electrical separation of transmission lines, buses, breakers

c. Relay house

d. Control power supplies (AC and DC)

7. Reactor Buildino

a. General layout

b. Separation of piping and cabling to redundant equipment

8. S' team Line:

Flow path.below MSIV's - source of control (local, control room etc.)

~

9. Shutdown Dutside Control' Room

a. Remote shutdown panel arrangement, separation and layout

- b. Identification of control and monitoring equipment

10. ' ESF Systems and Pump Rooms

a. General layout

b. Physical and electrical separation of redundant equipment

c. Cable and raceway layout

d. Identification of cables, raceways and equipment

11. Vital Instrumentation Power Supply Installation

a. General layout

b. Physical and electrical separation

c. Monitoring instrumentation

d. Cable and raceway layout

e. Identification of cables, raceways and equipment O e 9

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