ML18043A831

Responds to IE Bulletin 79-06B Supplementing 790605 Response.Submits Info Concerning Containment Penetrations & Valves

ML18043A831
Person / Time
Site:	Palisades
Issue date:	06/07/1979
From:	Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 7907190336
Download: ML18043A831 (6)

Text

consumers

• Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 Jme 7, 1979 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear RegulatorJ Commission 799 Roosevelt Road Glen Ellyn, IL 60137 tOCKET 50-255 - LICENSE DPR PALISADES PLANT - ADDITIONAL ACTIONS REQUESTED OF THE LICEN~EE REGARDING IE BULLETIN 79-06B Our response dated June 5, 1979, was transmitted without attachments. Enclosed are Attachments 1 and 2 which pertain to our June 5, 1979, submittal .

David P Hoffman (Signed)

David P Hoffman Assistant Nuclear Licensing Administrator CC: Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement

.V 11 1979

CONTAINMENT PENETRATIONS AND VALVES Penetration Item Class Service Valve(s) Type & Acutation Remarks 1 Al Containment Purge 2 Automatic Valves, Closed by Closed During Power Operation Air Supply Containment Isolation Signal 2 Al Containment and/or 3 Automatic Valves, in a Containment Purge Exhaust Air Room Purge Series-Parallel Arrangement, Closed During Power Operation.

Exhaust Closed by Containment Isola- Air Room Purge Exhaust May Be tion Signal Open During Power Operation to Permit Entry of Personnel to Air Room 3 Cl Main Steam Line 1 Automatic Check, Closed by Normally Open, Missile Isolation Low Steam Generator Pressure Protected 4 C2 Steam Generator 2 Automatic Valves, Closed by Normally Closed, Not Missile Bottom Blowdown Containment Isolati~n Signal Protected 5 Cl Steam Generator Top 1 Automatic Valve, Closed by Normally Open, Missile Blowdown Containment Isolation Signal Protected 6 C2 Component Cooling 1 Automatic Valve Closed by Normally Open Water Supply Safety Injection Signal, 1 Check Valve 7 C2 Component Cooling 2 Automatic Valves Closed by Normally Open Water Return Safety Injection Signal 8 C2 Shield Cooling Surge 1 Automatic Valve Closed by Normally Open Tank Condensate Containment Isolation Signal, 1 Check Valve

2 Penetration Item. Class Service Valve(s) Type & Actuation Remarks 9 C2 Containment Vent 2 Automatic Valves Closed by Normally Open Header Containment Isolation Signal 10 C2 Clean Waste Re- 2 Automatic Valves Closed by Normally Open ceiver Tank Vent Contaimnent Isolation Signal 11 C2 Vacuum Degasifier 1 Automatic Valve Closed by Normally Open Pumps Discharge Containment Isolation Signal, 1 Check Valve 12 C2 Clean Waste Receiver 2 Automatic Valves Closed by Normally Closed Tanks Circ Pump Containment Isolation Signal Suction

~

c+

pl 13 C2 Clean Waste Receiver 1 Automatic Valve Closed by Normally Closed ()

Tanks Circ Pump Containment Isolation Signal, §

<D Discharge 1 Check Valve  ;:s c+

f-'

1!1 C2 Clean Waste Receiver 2 Automatic Valves Closed by Normally Closed Tanks Pumps Suction Containment Isolation Signal 15 C2 Nitrogen 1 Automatic Valve Closed by Normally Closed Containment Isolation Signal, 1 Check Valve 16 Al Containment Air 2 Automatic Valves Closed by Normally Closed Sample Containment Isolation Signal 17 Bl Reactor Coolant 1 Automatic Valve Closed by Closed During Power Operation Letdown Containment Isolation Signal, 1 Manual Valve 18 C2 Primary System Drain 2 Automatic Valves Closed by Normally Open Tank Pump Suction Containment Isolation Signal

3 Penetration Item Class Service Valve(s) Type & Actuation Remarks 19 C2 Primary System Drain 1 Automatic Valve Closed by Normally Closed Tank Recirc Containment Isolation Signal, 1 Check Valve 20 C2 Demineralized Water 1 Automatic Valve Closed by Normally Closed Containment Isolation Signal, 1 Check Valve 21 C2 Reactor Coolant Pumps 1 Automatic Valve Closed by Normally Open Controlled Bleed Off Containment Isolation Signal, 1 Manual Valve 22 Al Containment Sump 2 Automatic Valves Closed by Normally Closed Drain Containment Isolation Signal CHR and by the SI Signal 23 Bl Reactor Coolant 2 Automatic Valves Closed by Normally Closed System Samples Containment Isolation Signal C2 Quench Tank Vapor 2 Automatic Valves Closed by Normally Closed Sample Containment Isolation Signal

• ATTACHMENT 2 (1) Class Al These pipe penetrations include those systems that are normally open or may be open to the containment atmosphere during power operation. These penetrations have two valves in series which close automatically when re-quired. Check valves are considered automatic and, with their exception, ali valves can be remotely closed from the main control room.

(2) Class A2 These pipe penetrations include those systems that are normally closed to the containment atmosphere during power operation, with the exception of the service air line which may be infrequently opened. If a line is part of a closed system outside the containment which is designed for pressure equal to or greater than containment design pressure, the line contains one normally closed manual valve. If a line is part of a system extern~l to the containment which is either an open system or a closed system whose design pressure is less than containment design pressure, the line contains two

• (3) normally closed manual valves or one normally closed manual valve and a blind flange in series. A mechanical lock on each valve will insure the valve is not left open or inadvertently opened during power operation.

Class Bl Penetrations in this class include those systems that are normally open or may be open to the primary coolant system during power operation. These lines contain two valves in series. If a line is part of a closed system external to the containment which is designed for pressure equal to or greater than containment design pressure, at least one of the valves must automatically close when required. If a line is part of a system external to the containment which is either an open system or a closed system whose design pressure is less than containment design pressure, both valves must automatically close. Check valves are considered automatic and, with their exception, all valves can be remotely closed from the main control room.

(4) Class B2 Penetrations in this class include those systems that are connected to the primary coolant system but are never opened during power operation. These lines contain two normally closed manual valves in series. A mechanical lock on each valve will insure the valve is not left open or inadvertently opened during power operation.

( 5) Class Cl

• Penetrations in this class include those systems that are not connected to either the containment atmosphere or to the primary coolant system and are normally open or may be opened during power operation. These lines are

2

• protected from missiles originating inside the containment and the lines themselves form the boundary of the containment. One automatic isolation valve is provided in each line. Check valves are considered automatic and, with their exception, all valves can be remotely closed from the main control room.

( 6) Class C2 Penetrations in this class include systems that are not connected to either the containment atmosphere or to the primary coolant system and are normally open or may be opened during power operation. These lines are not missile protected. If a line is part of a closed system external to the containment which is designed for pressure equal to or greater than contain-ment design pressure, the line contains one automatic isolation valve. If the line is part of a system external to the containment which is either an open system or a closed system whose design pressure is less than containment design pressure, the line contains two automatic isolation valves in series.

Check valves are considered automatic and, with their exception, all valves can be remotely closed from the main control room.

( 1) Class C3 Penetrations in this class include those systems that are not connected to either the containment atmosphere or to the reactor coolant system and are never opened during power operation. These lines contain two normally closed manual valves in series. A mechanical lock on each valve will insure the valve is not left open or inadvertently opened during power operation.

(8) Class X Penetrations in this class include those that are not covered or assigned to any of the above classes. these include penetrations for engineered safe-guards, equipment access opening, personnel access air locks, and electrical penetrations .