ML20154H203

Summary of 980910 Meeting with Util to Discuss Progress & Process Licensee Using to Resolve App R,Fire Protection Issues Since Closure of 980522 Confirmatory Action Ltr

ML20154H203
Person / Time
Site:	Quad Cities
Issue date:	10/06/1998
From:	Pulsifer R NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
References
NUDOCS 9810140102
Download: ML20154H203 (34)

Text

' bh-k /IV g

y % ,i UNITED STATES y

j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.c. 20666 4 001 4

9 . . . . . ,o October 6, 1998 l l

LICENSEE: Commonwealth Edison Company FACILITY: Quad Cities Nuclear Power Station, Units 1 and 2

SUMMARY

OF MEETING CONCERNING THE PROCESS OF RESOLVING APPENDIX R ISSUES AT QUAD CITIES NUCLEAR POWER STATION On September 10,1998, the staff met with representatives from Commonwealth Edison Company (Comed, the licensee) to discuss the progress and process the licensee is using to resolve fire protection (Appendix R) issues since the closure of the Confirmatory Action Letter (CAL) on May 22,1998. A list of the attendees is provided as Enclosure 1.

The objective of the meeting was for Comed to address their progress and process in evaluating the need to come into full compliance with 10 CFR Part 50, Appendix R. A copy of the licensee's presentation is included as Enclosure 2. Page 10a of the presentation was added on request of the staff during the meeting.

The licensee indicated that they are on schedule with this evaluation and that it will be completed in December 1998. The staff stated that the process outlined in Figure 1,"SSA

[ Safe Shutdown Analysis] Optimization Flowchart"(Enclosure 3) was an acceptable approach to improve fire protection and the post-fire safe shutdown capability at Ot.ad Cities. The licensee stated that the objective of the evaluation was to reduce manual actions and not abandon the control room and to make the station emergency diesel generators as the primary electrical source during a fire.

Additional handouts include the licensee's Project Team / Resources organization chart (Enclosure 4), a chart indicat'ng reactor inventory control equipment (Enciesure 5), and Figures 2.2-1 to 2.2-4, shutdown areas showing fire area boundaries in the plant (Enclosure 6).

It was agreed that the technical specification Unresolved Safety Question (USQ) amendment requests dated March 31,1998, and April 13,1998, for Quad Cities should be placed on hold until Comed has advanced their evaluation to the point that it will be known whether these requests will still be needed. The staff noted that the CAL closure letter stated that if the appropriate compensatory measures are maintained, the revised Safe Shutdown Analysis and associated implementing procedures provide an interim safe shutdown methodology that is acceptable in the short-term while corrective actions are being developed to achieve full compliance with Appendix R.

~

9810140102 981006 PDR ADOCK 050002 4 m{j Nc. j i

, a :wu 7 ep q .- ,y y o i=t .t q gg ;f

u j l

i LICENSEE: Commonwrith Edison Company FACILITY: Quad Cities Nuclear Power Station, Units 1 and 2

SUMMARY

OF MEETING CONCERNING THE PROCESS OF RESOLVING APPENDIX R ISSUES AT QUAD CITIES NUCLEAR POWER STATION On September 10,1998, the staff met with representatives from Commonwealth Edison 4 Company (Comed, the licensee) to discuss the progress and process the licensee is using to l resolve fire protection (Appendix R) issues since the closure of the Confirmatory Action Letter (CAL) on May 22,1998. A list of the attendees is provided as Enclosure 1.

The objective of the meeting was for Comed to address their progress and process in i evaluating the need to come into full compliance with 10 CFR Part 50, Appendix R. A copy of l_ the licensee's presentation is included as Enclosure 2. Page 10a of the presentation was  ;

l added on request of the staff during the meeting.  !

The licensee indicated that they are on schedule with this evaluation and that it will be completed in December 1998. The staff stated that the process outlined in Figure 1, "SSA l

[ Safe Shutdown Analysis] Optimization Flowchart"(Enclosure 3) was an acceptable approach ',

l to improve fire protection and the post-fire safe shutdown capability at Quad Cities. The '

l licensee stated that the objective of the evaluation was to reduce manual actions and not abandon the control room and to make the station emergency diesel generators as the primary electrical source during a fire.

Add ltional handouts include the licensee's Project Team / Resources organization chart (Enclosure 4), a chart indicating reactor inventory control equipment (Enclosure 5), and Figures 2.2-1 to 2.2-4, shutdown areas showing fire area boundaries in the plant (Enclosure 6).

It was agreed that the technical specification Unresolved Safety Question (USQ) ndment requests dated March 31,1998, and April 13,1998, for Quad Cities should be ced on hold until Comed has advanced their evaluation to the point that it will be known ether these requests will still be needed. The staff noted that the CAL closure letter s ed that if the appropriate compensatory measures are maintained, the revised Safe utdown Analysis and associated implementing procedures psovide an interim safe shutdow methodology that is acceptable in the short-term while corrective actions are being dev ped to achieve full compliance with Appendix R.

Further discussions will be held at the plant on October 8,19 , during the Quad Cities management meeting and another working meeting will be cheduled for late October or early November.

Docket Nos. 50-254,50-265

Enclosures:

As stated cc w/encls.: See next page DISTRIBUTION: See next page DOCUMENT NAME: G:\CM\ QUAD \Q910MTG.SU l To RECElvE A COPY oF THis DOCUMENT INDICATE IN THE Bok:"C" = COPY WITHouT ENCLOSURES "E" = COPY WITH ENCLOSURES "N" OFFICE PM:PD3-2 j 'LA:k3h / Q ~ NRR:SPLB ,

6 D:PD3-2 O NAME RPulsife[ k[ SWest h SRichards gk DATE 9/ 30 /98 9/ h /98' (D{ 0\ /98 bQO h * /98 OFFICIAL RECORD COPYV

.- L .-- - - - .

- . =. . .. - . . . - . . - - . . - - - . - . - - .-

1-Further discussions will be held at the plant on October 8,1908, during the Quad Cities management meeting and another working meeting will be scheduled for late October or early November.

s t

Robert M. Pulsifer, Prrdect Manager Project Directorate lil '.'

Division of Reactor Pro ects-lll/IV t

Office of Nuclear Reaciar Regulation l

I Docket Nos. 50-254,50-265 I

Enclosures:

As stated l

cc w/encls.: See next page

]

I l

I

v.- .. ,

9 October 6, 1998 Further discussions will be held at the plant on October 8,1998, during the Quad Cities management meeting and another working meeting will be scheduled for late October or early November.

ORIG. SIGNED BY Robert M. Pulsifer, Project Manager Project Directorate lll-2 Division of Reactor Projects-Ill/IV Office of Nuclear Reactor Regulation Docket Nos. 50-254,50-265

Enclosures:

As stated cc w/encis.: See next page DISTRIBUTION Docket File PUBLIC PD3-2 r/f RPulsifer OGC ACRS i E-MAIL SCollins/FMiraglia (SJC1/FJM)

BBoger (BAB2)

EAdensam (EGA1)

SRichards (SAR)

CMoore (ACM)

SWest (KSW)

PMadden (PMM)

DChyu (DXC)

CMiller (CLM1)

TMarsh (LBM)

TMartin (e-mail to SLM)

THiltz (TGH) i MRing, Rlli (MAR) l DOCUMENT NAME: G:\CM\ QUAD \Q910MTG. SUM See previous concurrence

• T3 RECEIVE A COPY OF THIS DOCUMENT,1NDICTTE IN THE box: "C" = COPY WITHOUT ENCLOSURES "E" = COPY WITH ENCLOSURES "N" OFFICE PM:PD3-2 g- L A:hq3; 2 6 NRR:SPLB D:PD3-2 (/

NAME- RPulsifer*: s(( hek SWest* SRichards DATE 9/30/98 /0 M 10/ ) /98 10/01/98 10/h/98 '

OFFICIAL RECORD COPY l

' e, l

l Quad Cities Nuclear Power Station .

Units 1 and 2 cc:

Mr. O. Kingsley, President Commonwealth Edison Company Nuclear Generation Group Site Vice President - Quad Cities Commonwealth Edison Company 22710 206th Avenue N.

Executive Towers West lll - Cordova, Illinois 61242-9740 l 1400 Opus Place, Suite 500 l Downers Grove, Illinois 60515 Vice President- Law and Regulatory Affairs .

Michael 1. Miller, Esquire MidAmerican Energy Company Sidley and Austin One River Center Place One First National Plaza 106 E. Second Street l

Chicago, Illinois 60603 P.O. Box 4350 Davenport, Iowa 52808 Commonwealth Edison Company Quad Cities Station Manager Document Control Desk-Licensing 22710 206th Avenue N. Commonwealth Edison Company Cordova, Illinois 61242-9740 1400 Opus Place, Suite 400 Downers Grove, Illinois 60515 U.S. Nuclear Regulatory Commission .

l Quad Cities Resident inspectors Office Mr. David Helwig l 22712 206th Avenue N. Senior Vice President l Cordova, Illinois 61242 Commonwealth Edison Company Executive Towers West 111 l Chairman 1400 Opus Place, Suite 900 Rock Island County Board Downers Grove,IL 60515

! of Supervisors 1504 3rd Avenue Mr. Gene H. Stanley Rock Island County Office Bldg. PWR's Vice President Rock Island, Illinois 61201 Commonwealth Edison Company Executive Towers West lli Illinois Department of Nuclear Safety 1400 Opus Place, Suite 900 l Office of Nuclear Facility Safety Downers Grove,IL 60515 1035 Outer Park Drive

' Springfield, Illinois 62704 Mr. Steve Perry BWR's Vice President Regional Administrator Commonwealth Edison Company U.S. NRC, Region ill Executive Towers West lil 801 Warrenville Road 1400 Opus Place, Suite 900 Lisle, Illinois 60532-4351 Downers Grove,IL 60515 William D. Leach Mr. Dennis Farrar Manager- Nuclear Regulatory Services Manager MidAmerican Energy Company Commonwealth Edison Company

. 907 Walnut Street Executive Towers West lli P.O. Box 657 1400 Opus Place, Suite 500 Des Moines, Iowa 50303 Downers Grove,IL 60515

Quad Cities Nuclear Power Plant .

Units 1 and 2 Ms. Irene Johnson, Licensing Director Nuclear Regulatory Services

' Commonwealth Edison Company Executive Towers West lli 1400 Opus Place, Suite 500 Downers Grove, Illinois 60515 Commonwealth Edison Company Reg. Assurance Supervisor- Quad Cities 22710 206th Avenue N.

Cordova, Illinois 61242-9740

Mr. Michael J. Wallace Senior Vice President Commonwealth Edison Company Executive Towers West til 1400 Opus Place, Suite 900 -

Downers Grove,IL 60515 l

l l

l l

l r

1 ___ . _ . . _ . .

2 .s QUAD CITIES APPENDlX R (FIRE PROTECTION)

MEETING - SEPTEMBER 10.1998 l

NAME AFFILIATION PHONE Robert Puisifer NRC 301-415-3016 l R.M. Krich Comed 630 663-7330 l Michael S. Tucker Comed 630-663-7648

!. Charles H. Furlow Comed 630-663-7264 l

John R. Garrity Comed 309-654-2241 X2582 l Bob Rybak Comed 630-663-7286

! Charles Peterson Comed 309-654-2241 X3609

Roger Gavankar Comed 630-663-7930 l Ron Kirven Sargent & Lundy 781-649-1377 l Nick Floravante TMCS, Inc. 301-253-8677 j Tony Raimondo NISYS 770-497-8818 David C. Tubbs MidAmerican 319-333-8192 Stuart Richards NRC 301-415-1395 Pat Madden NRC 301-415-2854 Doris Chyu NRC 630-829-9616 Chris Miller NRC 309-654-2227 Steven West NRC 301-415-1220 L.B. (Tad) Marsh NRC 301-415-2873 I

e i-l ENCLOSURE 1

(

s J

4

m .

-1 Quad Cities Nuclear Power Station Briefing for NRC Staff Fire Protection Improvement H Project - Technical Meeting t

Rockville, MD u

September 10,1998 l

4 A Unicom Company i Page 1 ENCLOSURE 2

?

comed .

i Briefing Objective f

1

[

e Reach a mutual understanding of Comed's plan to improve fire protection and the post-fire safe shutdown capability at Quad Cities. t i

i i

l, t

I I,

A Unicom Company Page 2 4

Agenda i

o Comed Commitments j

i

--John Garrity t e Fire Protection improvement Plan Initiatives  !

j

--John Garrity/ Charles Furlow / Mike Tucker  !

e Compliance Matrix i jt

--John Garrity e Multiple Spurious Operations Study .

--John Garrity/Ron Kirven i

, o Summary  !

i t

A Unicom Company Page 3 t

i i

comed

~

i Comed Commitments of April 20 and May 22,1998 i

-- John Garrity t

i e Plant Modifications e Fire Protection Improvements l

> Reduce Control Room Evacuation

> Improve Availability of 125 Vdc Breaker Control e Compliance Matrix e Multiple Spurious Operations Study A Unicom Company Page 4

comed .

Status of Modifications

-John Garrity e In-Progress Modifications i

> Fuel Oil Transfer Pump

> ADS inhibit Switch

! > Reactor Feed Pump Trip Logic a Reactor Recirculation Pump Fuses SBO Cable Reroute e Modifications Being Re-Evaluated

> 250 Vdc Switches

> RHR Valve (5 per unit) Hot Short issue

> HPCI Room Penetrations A Unicom Company Page 5

l ~

ComEcl .

l Fire Protection Improvement Plan (FPIP) Initiatives

-John Garrity/ Charles Furlow / Mike Tucker e FPIP Objective

> Improve Compliance

> Strengthen overall fire protection and safe shutdown capabilities e SSA Optimization Study

> Reduce inter-Unit Dependencies

> Increase Availability of 125 Vdc

> Reduce Evacuating the Control Room o GE Thermal-Hydraulic Analysis e Fire Risk Model e Additional Fire Protection Improvement Efforts A Unicom Company Page 6

't Fire Protection improvement Plan (FPIP) Initiatives j

-John Garrity/ Charles Furlow / Mike Tucker o SSA Optimization Study Objective: Perform Comprehensive Safe Shutdown Analysis with the following Goals

- Compliance with Appendix R, Ill.G.2

- Reduce the number of fire areas which require the evacuation of the control room

- Reduce the inter-unit dependencies .

- Reduce the number of exemptions

- Improve the availability of 125 Vdc t

A Unicom Company Page 7 i i

i Fire Protection improvement Plan (FPIP) Initiatives

--John Garrity/ Charles Furlow / Mike Tucker e SSA Optimization Study (cont'd)

> Approach

- Identify additional systems that could be used to meet the i safe shutdown requirements (HPCI, ADS, Core Spray, RHR (LPCI Mode) and the Emergency Diesel ,

Generators)

- Develop an equipment list for each system

- Identify cables, including associated cables, and routing for each identified cable

- An evaluation will be completed for each fire area to  !

determine the equipment that is affected by a fire j i

t i

A Unicom Company Page 8  ;

_ _ _ _ _ _ _ _ . _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ^

' i

~

Corned .

Fire Protection Improvement Plan (FPIP) Initiatives

--John Garrity/ Charles Furlow / Mike Tucker e SSA Optimization Study (cont'd)

> Approach 1

- Perform a review on the systems / equipment that will be utilized for shutdown to determine if the proposed shutdown method complies with ill.G.2 l

- If the requirements of Ill.G.2 are not met, evaluate options: .

a) Reroute cables b) Wrap cables in fire rated barriers c) Create new fire areas '

d) New tie-ins for mechanical systems e) Procedure changes

- Proposed changes will be ranked based on compliance, risk benefit, and cost li A Unicom Company Page 9 e

6 i Comed

~

c:

Fire Protection Improvement Plan (FPIP) Initiatives

--John Garrity/ Charles Furlow / Mike Tucker i e SSA Optimization Study (cont'c!)

> Current Status

- The equipment list for the new systems to be used has been generated

- Identification and routing of cables for the components on the equipment list has been initiated A Unicom Company Page 10

A u -_ a e m.

ConnEst  :

Fire Protection improveme.nt Plan (FPIP) Initiaties 125 Vdc Availability

-- Michael Tucker e Concerns

. Loss of 125 Vdc control power due to fire damage in many fire areas a Extensive manual actions outside the main control room o Objectives .

n improve separation of 125 Vdc n improve Emergency Diesel Generator availability n improve Service Water availability n No loss of control power on " unaffected" unit e Key Project Elements n 125 Vdc cable mapping a identify 125 Vdc service versus fire area to identify vulnerabilities Determine enhancements e implementation - based on cost, compliance, and risk benefit A Unicom Company Page 10a

M .

FIRE PROTECTION IMPROVEMENT PLAN PROCESS

--John Garrity i

June through October November December 1999-Forward Studies i SSA Optindzation Study Timeline Review i Fit Risk Model - Integrate Risk Based Present Implement 125 Vdc Study - /* Decisions on ---> Improvements to

• Improvements f Improvements Management Multiple Spurious Operations Study i Additional Fire Protection Improvement Efforts (Independent issues to be completed by 12/31/98) t Life Safety Issues Fire Penetration Seal Project Minimize Fire Watches Resolution of Red Stripe issue

{'

Combustible Load Calculations Separate Hot & Cold S/D Procedures i

A Unicom Company Page 11

M Comed -

Compliance Matrix

-John Garrity '

I l e Compliance Matrix Objective

> Provide a roadmap to identify where documentation exists that demonstrates compliance with Appendix R ,

o Methodology / Technical Approach

> Same as for TB-Il

> Comments documented e Site Nuclear Oversight Review l

i r

r A Unicom Company Page 12  !

I

. r

t comed

~

Compliance Matrix

-John Garrity e Results

) Completed for remaining alternate shutdown fire areas (RB-i 1N, RB-1S, RB-2N, RB-2S, TB-l, TB-lil, SB-l, 13-1,24-1)

> No additional issues were discovered beyond the issues raised at the inspection (multiple spurious operations, loss of 125Vdc control power)

> 13 PIFs generated (9 administrative / documentation weaknesses,4 technical) l

> Available for review i

~

A Unicom Company Page 13

~

COmEcl . .

i Multiple Spurious Operations Study

-John Garrity/Ron Kirven e Objective

> Identify equipment whose fire-induced operation could adversely impact the capability to achieve and maintain safe  :

shutdown l

l l'

l A Unicom Company Page 14 ,

l -

~

comed -

"l; Multiple Spurious Operations Study

-John Garrity/Ron Kirven  :

l i

l e Study Criteria

> All unprotected components / cables within a fire area ,

> Fire-induced failures considered grounds, open circuits, shods or hot shods i

3 Electrical power assumed to be available t

r t

A Unicom Company Page 15

COMId ,

Multiple Spurious Operations Study

-John Garrity/Ron Kirven m.

e Study Criteria (cont'd)

> The following conditions were evaluated:

- Reactor coolant inventory loss Damage to SSD equipment

- Diversion of required flow

- Draining of required tanks / vessels

- Isolation of required instrumentation

- Lack of room coolers with pumps operating A Unicom Company Page 16

g .

~

Multiple Spurious Operations Study

--John Garrity/Ron Kirven t 1

e Methodology / Technical Approach

> Review of flow paths to identify components  ;

> Identified cables and cable routing

> Highlighted " common" fire areas from cable routing Reviewed MOV's for possible mechanical damage

> Transient analysis based on Generic Letter 86-10 i

A Unicom Company Page 17

~

comed l

2 Multiple Spurious Operations Study

-John Garrity/Ron Kirven i . .

4 e Results

> 78 Potential Problems with 38 Resolved by Current Procedures

> ADS i

- Inhibit switch to isolate ADS signal

- Positive means provided to isolate all valves

> MSIVs

- Redundant circuits electrically separated

- Positive means provided to isolate at least one valve

> Possible equipment / pump damage due to inadequate flow

> Possible diversion of flow from torus / vessel i

A Unicom Company Page 18

comed

~

ll Multiple Spurious Operations Study

-John Garrity/Ron Kirven i

e Summary Ongoing efforts as a result of the study -Identifying possible solutions such as mods, procedure changes, reanalysis Comed is sensitive to NRC concerns and is acting in good faith to resolve the issue: '

- Evaluating combinations of spurious operations

- Working closely with the industry (BWROG)

- Compensatory measures currently in place A Unicom Company Page 19

. . .,. ~.. . . . - . .

Figure 1 SSA Optimizauon Flowchart

==*r === see====am ew malhedoleer

+

=any pawn er= = = aen=

meet SJD reosomeres la Mb Fet eeth eM W M seemed sensment het-

+

p o.us,e any e i.w eguemesu ses te vesvy seaweer le acomem *

, est seawom? O Yes 1 r MefWy ceWee Ingsbed t sperat Sie acomere = ihet sows eneet aparaten of sie egulpsms 4 .

Une ineopensenes Sedy N

% = eso .een se

+

For each Ere ame, desemwie sie equervunnt met is eAssad Dr a tie (e44 Alas souneus spemmen and cocus teaure ensfrees) .

1V Deesmune vie syneenmAssuoment to uthee fur normal ahnessum m each due eres r

\.

m osv. noms

• A ~ s  ?,

s y - r .- - . - - . -

j -

t Project Team / Resources Vice President Engineering Site Engineering Manage- !

Bob IIolbrook l Bill Bohlke Vice President Licensing Rod Krich  ;

Steering Committee R. Gavankar B. Burchill R Rybak Project Manager J hn Garrity i T. Thorsell S. Chingo S. Hunsader Consultant T. Raimondo i

Consultant N. Faravanti l I I I I l l Appendix R Mods ManagedTask Administrator Fire Risk Model Improvement Project Controls Licensing Support j M. Mills C. Furlow K. Zee D. McCullough S. Darin M. Wagner ,

i t i 1 .

I i 1 4 Managed Task Mods B. Lamb D. Bucknell SSA Opt 1125 VDC J. VanPelt Corporate Support as

!l Jerry Bednarczyk P. Cretens M. Humphrey P. Martinez Required i D. Bianchini I. Hussaim G. Henry M. Launi D. Mershon AJ. Mohr  ;

i t l R. Schivoni M. Ponsetto g Comed Mods R. Kirven T. Lelonek B. Porter R. Williams 4

f2 i 8 Timeline Review /GE k E. Beaumont

k . . _ . f t

L, 1

0 actorInventory Control v v v v V i 2 3 4 5 6 ADS / Core ADS /RHR RCIC SSMP HPCI Spray (LPCIJVk.de) .

v v i i 7 8 .

II I * ~

Local Control

{ Control Room

.e ,!

l Typical for AI! Systems l llll llllllllljjjj!ll l ;;

2

]

9 P

Pn

!E m

, 4 i i 't i't  : Y , r >. I ,, . l . , ,i i l1 ![ r' ,,i! l :ji

. '4 .,; .

6" 6 s 0 0 d n 0

' ' u -

0 6 r 3 5o 4

. 6 4 2 9r s 9

6 6 6 5G 5 2 -

2 BS 1

1 R1 _

BS 1

2 _

1 1 R1 _

S S

_ h t 1 1 u 1 -

o S 1 B

N 5 N 4 N 3 N 2-N 1 R

6 1 1 1 1 '-

1 1 1 1 -

_. 1 B

B 1

B B

B 1 1 1 -

1 R

1 R

1 R

1 R R h N N t

r 1 1 o 1 -

N B 1

R

_ 1 m.

_ 4

. 2 BN 1

1 R1 3 -

2 BN 1

1 R1 3 -

BN I

C 1 P

i s

e r

H 1

1 R1 a

d n

u o

b a

e r

a e

r i

f w

o h

s 9945 " 4>4- Oz s c25" ,. -,M e

i n

l d

l o

n5C$a'.

2 .

b '

h e Ic!oNj E m 'Osx.

T oc>9Ej cz; '- -

o-@3 m' a2m Dm- -

E38 m M owcm~ T .

+ c.

'4 1.1.1.6 I

a e RB-1N  :

I 690*- 6" t 1.1.2.5 t

t RB-2N  :

666*- 6" i The bold lines show fire area bounderlos 1.1.2.4  ;

RB-2N  !

647'- 6" 1.1.2.3  ;

b RB-2N O

623'- 0" ha s j i.i.2.2 El5 g 9  :

cn n o tiz 890 as i z  :

m mE c Eijf @ "s!: RB-2N

sa a-~ .m RB-1/2 ,

m z

n z c>

z G - U)

A N )>4 - HPCI .

595*- 0" '

r- gn -4 Ground i North 11.3.4 113.3 Ng -

O 11.1.4 11.3.1 11.3.2 South 5 1.1.2.1 S 1.1.2.1 N l RB- RB- RB- RB- RB-7 2S 2S RB-2S RB-2N 2N 2N 2S m

554'- 0"

-_.._.-...__...-.._..._..._...-_..._.._.m. _ _...._.m.. _m.. _. .

. -g *

• i l f

i I

k I 3 L E

~

E  !

Units 1&2 ,

I hTh W 8.2.8.E Turbine Operating Floo, TB-IV 8.2.8A 13-1 24-1 8.2.8D 14-1 maii 8.2.88 82.8C m i 23.i 23-1 Div I 13-1 Div N 24-1 639'- 0*

7' S,B-l 7.'

TB-Ill TB-Il TB-l ,,,... .

623'- 0"

~~

6.1.B 6.1.A 8.2.7.A and B 8.2.7.C 8.2.7.D and E 6.2.A 6.2.8 SB-l .i5 - .-

3.0 C.S.R.

"'-*' TB-Ill TB-ll TB-1 SB-l 9.1 8.2.6.A and B 8.2.6.C 8.2.6.D and E 9.2 6.3 & 4.0 SSP AEER & Com. R. 595*- 0" Ground TB-Ill TB-l a 2.5 unn 2 Cani.runn.

588*- 0" i

O 8.2.4 Unit 1 Cable Tunnei l 11.1.2.8 11.1.2.C 8.2.1.B c B"r C 588*-8* 11.1.2.A E55 g- c5 TB-1 TB-1 TB-1 TB-1 z68 m g _o 8.2.1.A 11.1.1.A 11.1.1.B 11.1.1.C 54T - 0" gEi!!

_ u)

E yd m TB-Ill TB-lli TB-V TB-Ill 54T - 0*

"E EC$

-Zm N m go (/)

.N

'E B5 g q;$ O Mh g g Tn.noidiin .no.ii,.ar nound.d g? 5mx o

o Z l

i l

? - ..

l 1-6.

f .

l I

a r B

, I ,

t i

Unit 1 Turbine TB-IV unit 2 Tumine i

)

i i

l

w C 1 1 3 t 9' MG Set MG Set MG Set MG Set z

m ggg 8 14-1 13-1 24-1 23-1

o05

-*O 7 Ce o 4 kV Swgr 4 kV Swgr 4 kV Swgr 4 kV Swgr

$9od& si C 2 0 Q -4

- i i~

Q c*n Z M ft) Hi q 3 c g to a f/3 19 18 29 28  :

4 Q Oz m io go (/) l

p FgA wy 480 V Swgr 480 V Swgr S 3 ",, o m -l Elevatiort 639'- 0*

g

%z 3 o t m Z i G The bold Neues show fire area boueularies  ;

o

)

i ,

O i

& 33 7 l

w }

,,- - . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __