ML20126M369

Forwards Part 4 of Response to Question 021.32 Which Describes Approach to Remote Shutdown from Control Room Due to Control Fire,Per 810527 Meeting W/Nrc

ML20126M369
Person / Time
Site:	Fermi
Issue date:	06/15/1981
From:	Colbert W DETROIT EDISON CO.
To:	Kintner L Office of Nuclear Reactor Regulation
References
EF2-53-675, NUDOCS 8106170086
Download: ML20126M369 (6)

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June 15, 1981 EF2 - 53,675 Mr.

L.

L.

Kintner Division of Project Management Office of Nuclear Reactor Regulation U.

S.

Nuclear Regulatory Commission Washington, D.

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20$55

Reference:

Enrico Fermi Atomic Power Plant, Unit 2 NRC Docket No. 50-341

Subject:

Transmittal of Response to Part 4 of Question 021.32 Attached herewith is Part 4 of Edison's response to Question 021.32.

This section describes Edison's approach to remote shutdown from the control room due to control room fire, as described in the May 27, 1981 meeting with your Staff.

Very truly yours, Yf W.

F.

Colbert Technical Director Fermi 2 Project WFC/RCA:j1 cc:

Mr.

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Little CO!

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Fermi 2 will be using a method of rencte shutdown from the. control roca if a cont rol room panel fire causes the need to evacuate the control room. The design basis for such a fire is that the control'rocm panel fire would be extinguished before damage could occur to core than one panel. 'The smoke from such a fire could cause the evacuation of the operating personnel after a limited annunt of operation is performed.

To address such a scenario, Fermi 2 will have two divisional rennte shutdown panels.

Table 021.32-1 lists the systems necessary for shutdown and vital support to achieve het and cold shutdown frcm the control rocm. Table 021.32-5 lists the instrumentation and manual equipment control provided en the renote shutdown panels.. Because the control panel fire will leave one of the two redundant divisions intact, credit is taken for the aute=atic operatien of equipment in the functienal division. The divisicn I remote shutdown panel is provided to meet GDC 19 and is provided with equignent to achieve hot and cold shutdown. Although cold shutdown can be achieved from this panel, the control rcom habitability would be re-established before'the need to go to cold shutdcwn.- The division II remote shutdcwn panel will include instruments and controls necessarj to perform the

. manual operating functions to achieve hot shutdown.

Fermi 2 is providing rerote shutdown capability to bypass any control room operating panel. The cable entry to the centrol recm panels is bottom fed from the cable spreading rccm.

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Table 021.32-1 SYSTD'S RECUIRED EDR SHtJ"DCid Syste~s Recuired for Hot and Cold Shutdcwn C11'.

Control Pod Drive - Manual Scram Circuits Only B21 Main Steam Isolation Valves (manual closure only)

T50 Suppre sion Pool Te:gerature obnitoring B21 Reactor Vessel Pressure Instrumentation T41 Control ~ Center HV7C ESFhanCoilUnits,forAreasServicingShutdcunSystems

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P44-EECN P45 EESW R30-01 ' Emergency Diesel Generators and Auxiliaries X41-03 EDG and EDG Switchgear Rocm HVIC R32 ESF CC System "R30, R14~, R16 ESF AC Distribution System, for Shutdown System Eqai r.ent i

E11-51 PRPSW System Ell-56 PER Ccolir.g Tcwers Systems Recuired Cniv for Hot Shutdown ESl RCIC-(Div. I)

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Safety Relief Valves (Div. I)

E41 HECI (Div. II)

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RHR, Containment Cooling Mode 1

Systems Recuired Only for Cold Shutdcwn Ell RHR, Shutdown Ccoling Mcde B31 Recirc. (Iricard Isolation Valves Only)

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NO.

SERVICE DIV.

DEVICE RCIC SYSTEM 1

E51-C002.

Trip throttle valve I

BLPB 2

E51-C002 Trip throttic valve position

~I BLDS Manual initiation of RCIC I

Round PB 3

(Bypass low Reactor Water level) 4 E51-F045 Steam to turbine I

BLPB 5

E50-R613 Flow indicator I

Beckman VSA RHR SYSTEM 6

Ell-C001A RHR Service Water Pump I

CMC Sw 7

Ell-C001C RHR Service Water Pump I

CMC Sw 8

Ell-C002A RHR Pump I

CMC Sw 9

Ell-F024A Containment Spray M.O.'V.

I BLPB o,

10 Ell-F028A Containment Spray M.O.V.

I BLPB 11 E11-F048A Hx Shell Side Bypass M.O.V.

I BLPB 12 Ell-F068A Cont. Cooling Hx Discharge M.O.V.

I BLPB 13 Ell-F008 RHR Suction Cooling (OUTER)

II BLPB 14 Ell-F009 RHR Suction Cooling (INBD)

I BLPB

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15 Ell-F006A Shutdown Cooling M.O.V.

I BLPB 16 Ell-F015A RHR Injection M.O.V.

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, BLPB 17 Ell-F004A RHR Pump Suction M.O.V.

I BLPB c

18 Ell-F017A RHR Outboard M.O.V.

I BLPB 19 Ell-R604A RHR Flow Indicator I

Beckman V5A i y

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DEVICE NUCLEAR BOILER SYSTEM 20 B21-R605A Reactor Level Indicator I

Beckman V5A 21 B21-R005A Reactor Pressure I Indicator I

Foxboro 6400C 22 B21-F013D Manual Relief Valve I

BLPB 23 B21-F013H Manual Relief Valve I

BLPB RECIRCULATION SYSTEM 24 B31-F023A Recirc Pump Suction Valve I

BLPB MISCELLANEOUS d,

25 E1156C001-A. Mech. Draft Cooling Tower Fan A I

CMC Sw 26' 'E1156C001-C Mech. Oraft Cooling Tower Fan C I

CMC Sw 27 'Cll-C001A CRD Pump I

CMC Sw 28 HPCI Manual Trip II Selector Sw C1tler 29 Hammer Drywell Press Indicator I

Foxboro 6400HC 30 Suppression Pool Water Temp.

I Weston Indicator Off Temp Element T50N405A 1316 31 Transfer Switch Logic Power I

Type SBM Model For 64B BRKR Cont 10AA50 32 Transfer Switch Logic Power I

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