ML20214A898

Summary of 860129-30 Site Visit Re Implementation of Instrument & Control Sys Based on FSAR Descriptions & Electrical Schematics.Agenda & List of Participants Encl

ML20214A898
Person / Time
Site:	Vogtle
Issue date:	02/13/1986
From:	Mark Miller Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8602200440
Download: ML20214A898 (9)

Text

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s I Docket Jios. : 50-424 and 50-425 '

. FE8131986

, H APPLICNMT: Georgia Power Company FACILITY: Vogtle, Units 1 ands 2 l

SUMMARY

OF ELECTR!tAL INSTRUMENTATION AND' CONTROL SYSTEMS BRANCH SITE VISIT HELD JANUARY 29-30, 1986 p..

I On' January 29-30, 1986, the staff visited the Vogtle site in order to \

supplement the review of the instrumentation and control systems based on the FSAR descriptions and electrical schematics and elementary diagrams .,

by evaluating the actual implementation of the design as installed at the si te. Areas of review included the control room, instrument racks., con-tainment building, turbine building, remote shutdown panels, and diesel  :

generator rooms. The agenda of the visit is included as Enclosure 1. The l agenda items were selected so that the staff could evaluate both standard l review areas (e.g., physical separation between redur. dant safety-related j circuits with instrument cabinets) and special interest areas addressed .'

during the licensing review. Participants are listed in Enclosure 2.

The detailed summary of the visit is provided in Enclosure 3 and was pre-parec by Fred Burrows. The detailed sumary completes staff action on the Vogtla site visit discussed in SER Section 7.1.4.4. No additional itemsn were identified during the visit; therefore, no SER followup will be '

necessary as a result of the visit.

b Melanie A. Miller, Project Manager PWR Project Directorate Number 4 Division of PWR Licensing-A i -

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Enclosures:

As stated ,

I cc: See next page 1

D P M -A PWR#4/ PWR-A l l'1 r/mac BJYoungblood l

02//7/86 02/p/86

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c, i4 Mr. R. E. Conway l Georgia Power Company Vogtle Electric Generating Plant -

cc.

( 'Mr. L. T. Gucwa Resident Inspector l

Chief Nuclear Engineer Nuclear Regulatory Commission Georgia Power Company P. O. Box 572 P.O. Box 4545 Waynesboro, Georgia 30830 '

Atlanta, Georgia 30302 Mr. Ruble A. Thomas Deppish Kirkland, III, Counsel l Vice President - Licensing Office of the Consumers' Utility i

Vogtle Project Council Georgia Power Company / Suite 225 .;

Southern Company Services, Inc.= 32 Peachtree Street, N.W. ,

P.O. Box 2625 Atlanta, Georgia 30303 t

Birmingham, Alabama 35202 '

l James E. Joiner i

( Mr. Donald 0. Foster Troutman, Sanders, Lockeman, ',.

l . Vice President & P oject General Manager & Ashmore l Georgia Power Company Candler Building '

Post Office Box 299A, Route 2 127 Peachtree Street, N.E. i

! Waynesboro, Georgia 30830 Atlanta, Georgia 30303 .

Douglas C. Teper  !

Mr. J. A. Bailey i Georgians Against Nuclear Energy--

Project Licensing Manager 1253 Lenox Circle Southern Company Services, Inc. Atlanta, Georgia 30306 4 P.O. Box 2625 t Birmingham, Alabama 35202 Laurie Fowler, Esq.

( 218 Flora Avenue, N.W.

1 Ernest L. Blake, Jr. Atlanta, Georgia 30307 i Bruce W. Churchill, Esq.

Shaw, Pittman, Potts and Trowbridge Tim Johnson - --

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l. 1800 M Street, N.W. Executive Director i

. Washington, D. C. 20036 Educational Campaign for a Prosperous Geor  ;

.1083 Austin Avenue,gia Mr. G. Bockhold, Jr. N.E.

Vogtle Plant Manager Atlanta, Georgia 30307 i Georgia Power Company '

I Route 2 Box 299-A Billie Pirner Garde Waynesboro, Georgia 30830 Citizens Clinic Director

,, Government Accountability Project ,

l Regional Administrator, Region II 303 10th Street j U.S. Nuclear Regulatory Comission Augusta, Georgia 30901 *

101 Marietta Street, N.W., Suite 2900 I l

Atlanta, Georgia 30323 .

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O e ENCLOSURE 1 ELECTRICAL INSTRUMEiiTATION AND CONTROL SYSTEMS BRANCH SITE VISIT AGENDA FOR V0GTLE

1. Preliminary Discussions

a. Confirmatory items

2. Control Room

a. Instrument arrangement, cable separation within panels

b. Bypass / Inoperable status indication

c. R.G.1.97 display

- 3. Instrument Rooms

a. Protection system racks and panels, cable separation

b. Testing features, discussion of typical test sequence for channel calibration, channel operational test logic test, master rela) l test, slave relay test i l

c. Installation for P-4 interlock testing

d. Modification for slave relay testing

4. Containment Buildino/ Auxiliary Feedwater Pump House

a. Instrument arrangement and separation

b. Test features for instruments

c. Hot and cold leg RTD installation

d. ECCS accumulator isolation valves

e. Reactor coolant low flow instruments

f. Auxiliary feedwater System

5. Turbine Building

a. Turbine stop valve, cable routing and. separation *

b. Low auto step oil pressure transducers, cable routing and separation

c. Turbine electro-hydraulic contro1' system

d. Turbine trip on reactor trip, cable routing'and separation

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, 6. Remote Shutdown Panels

a. Panel arrangement, cable separation within panels

7. Outside Tanks and Instrument Sensing Lines

a. Freeze protection

8. Diesel Generator Bu'ilding

a. Diesel generator r

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j ENCLOSURE 2 PARTICIPANTS hRC BECHTEL GEORGIA POWER COMPANY M. Miller S. Cereghino K. Pointer F. Burrows C. Bennett W. Cheatwood J. Knight J. Holmes A. Abdallah J. Rogge F. Legaspi M. Briney J. Thompson J. Haratyk R. Burns S. Hayter G. Spell G. Lee WESTINGHOUSE SOUTHERN CC",PANY SERVICES C. Benton -

J. Bailey

. R. Morrison. K. Kopecky G. Lang K. Knight J. Mesmeringer

R. Kareis i

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. ENCLOSURE 3 DETAILED

SUMMARY

OF ELECTRICAL INSTRUMENTATION AND CONTROL SYSTEM 5 V0GTLE SITE VISIT HELD l JANUARY 29-30, 1986 INTRODUCTION The results of the electrical, instrumentation and control systems (EICS) site visit are provided in the following discussion.

Each building / room is listed followed by a discussion of-the observations and conclusions made by the staff. In general, the physical arrangement and in-sta11ation of the instrumentation and control systems appeared to be in accordance with the applicable design criteria. No concerns were identified 3- during the site visit.

DISCUSSION

1. Preliminary Discussions Currently, Chapter 7 of Vogtle SER contains 5 confirmatory items. Several of these confirmatory items require design changes before they can be con-sidered closed. Although preliminary design information was available during the site visit, the staff requested the applicant to provide final design documentation for its review. The applicant, in response, committed to provide final engineering change packages for the appropriate confirmatory items at a later date.

2. Control Room

~The staff reviewed the general layout of the control room including the main contral boards, annunication, and controls. Cable separation was reviewed within one main control board panel. The internal cabinet wiring was found to conform to the separation criteria defined in the Vogtle FSAR (metal barriers or 6 inch minimum separation distance). '

The staff reviewed the bypass and inoperable status panel and verified that the panel is designed to satisfy the requirements of IEEE-STD-279 and Regulatory Guide 1.47 as discussed in the SER. The staff was unable to re-view the.R.G.1.97 display because the installation was incomplete. ' Detailed staff review of this installation is in progress and the results of that review will be documented in a supplement'to the SER.

3. Instrument Rooms

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The staff reviewed the internal cabinet wiring within several protection system racks (process, input, logic, output). The Vogtle protection system racks are typical Westinghouse 7300 Series design composed mainly of separate

, bays dedicatea to individual channels or logic trains. Where redundant

circuits existed within a cabinet or bay (input), the staff verified that i

the internal wiring conformed to the separation criteria defined in the FSAR.

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,4 I While at the protection system racks, the applicant presented a brief ,

, discussion of the test sequence for the channel, logic and relay. tests.

3 The tests discussed for Vogtle are typical of the current Generation of Westinghouse NSSS plants and will conform to the surveillance require-ments of the Vogtle. Technical Specifications which are being developed i i

in line with the Westinghouse Standard Technical- Specifications.

, As stated in Section 7.3.3.2 of the SER, the applicant-is permanently

installing a voltage indicator with a switch (on-off) to measure the P-4 i

interlock during testing at the reactor trip breaker cabinets. During the site visit, the staff was unable to review this modification because l it was not installed. Further review will be conducted by the staff when -

l the installation details are available in order to resolve this confirmatory item.

The applicant is modifying the on-line test circuitry for the master and slave relays. During the site visit, the staff was unable to review the.r modification because .it has not been implemented. Further review will be

conduct *d by the staff when installation details are available.

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4. Containment Building / Auxiliary Feedwater Pump House The staff reviewed several safety-related instrument installations in-cluding the steam generator level, hot and cold leg RTDs, and reactor t coolant flow instruments. In addition, the staff reviewed the ECCS accumulator valves, the pressurizer PORY installation (valves were not 3 installed), the main steam isolation valves, the steam generator PORVs, and the main feedwater isolation and control valves.

During the tour of the containment, th'e staff reviewed the test features .

-(test valves, connections, etc.) of a typical safety-related differential pressure transmitter. A typical test sequence was discussed with the

applicant.

i The staff reviewed the auxiliary feedwater system including the auxiliary

j. feedwater pumps, flow-control valves, flow transmitters, and piping.

5. Turbine Building The staff reviewed the turbine stop valve and the turbine electro-hydraulic control system. Special attention was given to the routing and separation of the safety-related cables associated with the turbine stop valve limit-switches and low auto stop oil pressure switches which provide inputs into.

the reactor protection system (SER Section 7.2.1). Although the. turbine.

building is a nonsafety-related building, the applicant has trfated these cables as' safety-related (color coding, mounting, separate conduits, etc)-

within the structure.

I Also the staff reviewed the cable routing.and separation of the redundant

. circuits which trip the turbine following a reactor trip (SER Section i l 7.2.2.2). The staff's review indicates that the licensee provided an individual conduit for each circuit and separated the conduits by at least

one inch within the turbine building up to.the turbine pedestal.

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6. Remote Shutdown Panels t The two redundant remote shutdown panels are each located in separate locked l rooms which provides the physical separation for each train. . During the site visit, the staff reviewed the panel arrangement and cable separation within the panels of one of the remote shutdown panel rooms. Where redundant cir-cuits existed within a panel, the staff verified that the internal wiring conformed to the separation criteria defined in the FSAR.

7. Outside Tanks and Instrument Sensing Lines The staff reviewed several outside storage tanks including the refueling water storage tank and the condensate storage tanks. Special attention was given to the use of heat tracing applied to instrument sensing lines such as those for sensing tank levels (SER Section 7.5.2.6). Although at the time of the site visit only temporary heat tracing had been installed, the staff reviewed a local heat tracing control panel which will be used with the permanently (future) installed heat tracing. r

8. Diesel Generator Building The staff reviewed one diesel generator room during this site visit.

Current testing and problems with the diesel generators were discussed.

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MEETING

SUMMARY

DISTRIBUTIONS FEg 131986i

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- NRC Pa ticipants YR dPg. , < - ,

L PDR. F. Burrows < '

U , NSIC .' LJ. Knight.' '

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-Y-PRC~ System. ~

J . ~ Rogge .'

.  ; ,s Ph'R#4 Reading File J. Thompson Project Manager M. Miller =

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~M. Duncan

. Attorney, OELD -

I J. Partlow-E.' Jordan B;-Grimes' c- t ACRS.(10)

OTHERS i

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bec: L'icensee & Service List 4

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