ML16131A670

Davis-Besse, Unit 1 - Revision 04 to Procedureinternal Flooding, RA-EP-2880

ML16131A670
Person / Time
Site:	Davis Besse
Issue date:	04/30/2016
From:	Tyrie R FirstEnergy Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA-EP-2880, Rev 04
Download: ML16131A670 (18)

Text

D Copy Holder Number: 1665 Transmittal Number: DB-o4302016-252834 FE NOC Davis-Besse Power Station Transmittal Report Name: DOC. CONTROL DESK Location / Address: OFFSITE / USNRC DMSION OF EMERGENCY PREPAREDNESS One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Unit Document Number Doc Type Sheet/Section Revision Version Change Type Change Number Document Status DBl RA-EP-02880 DBl RA-EP-02880 PROC PROC 0003 APPROVED REVISED Data Date Time: 04/30/2016 08:59:20 AM Page 1of1 Transmittal Date: 4/30/2016 7:52:35 AM HC AC CD TOCl TOC2 Changes 0 0 0 0 EPON EPON Use this document transmittal to update the identified documents and remove the superseded documents from use.

\ Page 1of17 Davis-Besse Nuclear Power Station PROCEDURE RA-EP-02880 INTERNAL FLOODING REVISION04 Prepared by: Ron Tyrie Procedure OW11er: Superintendent

-Nuclear Operations Effective Date: 04/30/16 LEVEL OF USE: STEP-BY-STEP 2 INTERNAL FLOODING TABLE OF CONTENTS RA-EP-02880 Revision 04 1.0 PURPOSE .....................................................................................................................................

3

2.0 REFERENCES

...................... " ........................................................................................................

3 3.0 DEFINITIONS

..............................................................................................................................

3 4.0 RESPONSIBILITIES

....................................................................................................................

3 5.0 INITIATING CONDITIONS

........................................................................................................

3 6.0 PROCEDURE

...............................................................................................................................

4 6.1 Flooding in Areas that Affect Safe Shutdown Systems ..... : ............................................

.4 6.2 Flooding in the Emergency Feedwater Facility ..............................................................

.4 6.3 Flooding in All Other areas ..............................................................................................

4 6.3 Cleanup of the Affected Areas .........................................................................................

5 6.4 Equipment restoration

......................................................................................................

5 7.0 FINAL CONDITIONS

..................

...............................................................................................

6 8.0 RECORDS ....................................................................................................................................

6 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM ...............

7 ATTACHMENT 2: FLOODING AFFECTING THE CCW PUMP ROOM ......................................

10 ATTACHMENT 3: FLOODING AFFECTING THE ECCS ROOMS ..............................................

12 ATTACHMENT 4: POTENTIAL SOURCES OF INTERNAL FLOODING ...................................

14 ATTACHMENT 5: PIPE TUNNEL DRAINS ARRANGEMENT

....................................................

15 ATTACHMENT 6: FLOODING AFFECTING THE EFWF .............................................................

16

/ 3 1.0 PURPOSE

• RA-EP-02880 Revision 04 This procedure provides guidance for actions to be taken for internal flooding incidents.

2.0 REFERENCES

2.1 Developmental 2.1.1 Assessment of the Internal Flood Hazard for the Davis-Besse Nuclear Power Station, SAR OS, September 1989. 2.1.,2 INPO SOER 85-5, Internal Flooding of Power Plant Buildings, December 30, 1985. 2.1.3 ECP 13-0195, Emergency Feedwater Facility 2.1.:4 ECP 13-0196, Emergency Feedwater System 2.2 Implementation 2.2.1 RA-EP-01500, Emergency Classification 2.2.2 RA-EP-02720, Recovery Organization 2.2.3 NOP-SS-3300, FirstEnergy Enterprise Records Management Program 2.2.4 NORM-LP-7202, Davis-Besse Specifications for FLEX Equipment Out of Service 3.0 DEFINITIONS 3.1 INTERNAL FLOODING-Flooding that occurs from breaches of water systems that are located inside plant buildings and are connected to large water sources such as Intake Forebay or tanks. 4.0 RESPONSIBILITIES 4.1 The Shift Manager shall implement this procedure in the event of internal flooding that constitutes a threat to:

• Personnel Safety

• Safe Shutdown capability

• Power production capability

• Diverse And Flexible Coping Strategies capability (FLEX I EFW) 5.0 INITIATING CONDITIONS This procedure shall be implemented upon Control Room identification of internal flooding incidents that exceed the existing Station Drainage System's removal capability AND constitutes a threat to: (1) Personnel Safety, or (2) Safe Shutdown capability, or (3) Power production capability, or (4) Diverse And Flexible Coping Strategies capability (FLEX I EFW).

4 6.0 PROCEDURE 6.1 . Flooding in Areas that Affect Safe Shutdown Systems RA-EP-02880 Revision 04 6.1.1 Service Water Pump Room and Adjacent Areas; GO TO ATTACHMENT 1, FLOODING AFFECTING THE SERVICE WATER PUMP ROOM. 6.1.2 Component Cooling Water.Pump Room; GO TO ATTACHMENT 2, FLOODING AFFECTING THE CCW PUMP ROOM. 6.1.3 Emergency Core Cooling Systemroom(s);

GO TO ATTACHMENT 3, FLOODING AFFECTING THE ECCS ROOMS. 6.2 Flooding in Areas that Affect the Diverse and Flexible Coping Strategies 6.2.1 Emergency Feedwater Facility, GO TO ATTACHMENT 6, FLOODING AFFECTING THEEFWF. 6.3 Flooding in All Other areas 6.3.l Symptoms

• High sump level alarms.

• High flow (low pressure) indications for affected systems.

• Automatic system response to high flow rates.

• High or low tank level indications.

NOTE6.3.2 Attachment 4 contains the areas analyzed to be susceptible to internal flooding.

WARNING 6.3.2 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

6.3.2 Determine the source of flooding, REFER TO ATTACHMENT 4, POTENTIAL SOURCES OF INTERNAL FLOODING.

J

• Monitor Control Room indications to assist in identifying the flooding source.

• Dispatch an operator to investigate the source of the problem.

5 NOTE 6.3.3 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required.

6.3 .3 Leak isolation may be performed by:

• Manual or remote isolation of affected piping.

• Shutdown of pumps NOTE6.4 Water to be removed after a flooding incident may be 'contaminated, contain oil, or other chemicals subject to legal release limitations.

6.4 Cleanup of the Affected Areas 6.4.1 IF the water to be removed is:

• Potentially contaminated

• Contains oil

• Contains other chemicals subject to legal discharge limits, RA-EP-02880 Revision 04 THEN notify Radiation Protection and/or Chemistry to obtain assistance in determining how to dispose of the water and determine if external notifications are required.

6.4.2 Notify Maintenance if additional resources are required to remove the water and/or clean the area. 6.4.3 Notify the appropriate maintenance group to inspect equipment that appears to have been submerged or sprayed during the incident.

6.5 Equipment restoration 6.5 .1 WHEN potentially effected equipment has been inspected and released by the responsible organizations, THEN return the equipment to service as necessary.

6 7.0 FINAL CONDITIONS RA-EP-02880 Revision 04 Use of this procedure shall be terminated when one of the following conditions are applicable:

7 .1 The flooding condition has been corrected, cleanup is completed, and necessary equipment is restored or removed from service for corrective maintenance.

7.2 Cleanup and restoration is being conducted as a part ofRA-EP-02720, Recovery Organization.

8.0 RECORDS 8.1 The following quality assurance records are completed by this procedure and shall be listed on the Records List, captured and submitted to Records.Management in accordance with NOP-SS-3300, FirstEnergy Enterprise Records Management Program: 8.1.1 None 8.2 The following non-quality assurance records are completed by this procedure and shall be listed on the Records List, captured and submitted to Records Management in accordance with SS-3300, FirstEnergy Enterprise Records Management Program: 8.2.1 None 7 RA-EP-02880 Revision 04 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM Page 1 of3 1.0 Symptoms 1.1 High sump level alarm from: 1.1.1 Diesel fire pump room 1.1.2 Service water valve room 2 1.2 High flow (low pressure) indications for affected systems: 1.2.1 Service water system 1.2.2 Water treatment system 1.3 System's automatic response to high flow rates (low pressure):

1.3 .1 Fire suppression system Auto. pump start( s) 1.3 .2 Cooling tower makeup pump trip 1.3 .3 Service water isolation of secondary loads 2.0 Determination of the flowing source I 2.1 Monitor Control Room indications to assist in identifying the flooding source. 2.2 The following areas have the potential to flood the Service Water Pump Room. 2.2.1 Room 51, Diesel fire pump room flooding sources:

• Fire suppression piping

• Screen wash piping 2.2.2 Room 52, Service water pump room flooding sources:

• Service water piping

• Fire suppression piping

• Cooling tower makeup piping 8 RA-EP-02880 Revision 04 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM (Continued)

Page 2 of3 2.2.3 Room 53, Service water valve room flooding sources:

• Service water piping

• Fire suppression piping

• Water treatment piping

• Cooling tower makeup piping WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE 3.1 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required.

3 .1 Leak isolation may be performed by: * -Manual or remote isolation.

of affected piping

• Shutdown of pumps 3.2 Non-isolable flooding may occur in the service water valve room. A break in the service water return line piping may result in back leakage from the forebay or intake structure.

9 RA-EP-02880 Revision 04 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM (Continued)

Page 3 of3 NOTE 3.3 For the maximum postulated flood it will take approximately 20 minutes to reach the level at whfoh drain plugging is not feasible.

3 .3 WHEN the flooding is in the service water valve room, THEN plug the floor drains in the service water pump room and the diesel fire pump room. REFER TO Attachment 5, Pipe Tunnel Drain Arrangement.

3.4 REFER TO RA-EP-01500, Emergency Classification, to determine' any required Emergency Action Levels. 3.5 For plant restoration GO TO Step 6.3. \

10 RA-EP-02880 Revision 04 ATTACHMENT 2: FLOODING AFFECTING THE CCW PUMP ROOM Page 1 of2 1.0 Symptoms 1.1 High/low tank level alarm from: 1.1.1 Miscellaneous Waste Drain Tank (high) 1.1.2 CCW surge tank (low) 1.2 High flow (low prt:ssure) indications for affected systems: 1.2.1 Service Water system 1.2.2 Component Cooling Water system 1.3 System's automatic response to high flow rates (low pressure):

1.3 .1 Fire suppression system Auto pump start( s) 1.3 .2 Service water isolation of secondary loads 1.4 Automatic header isolation due to lowering CCW surge tank level. 2.0 Determination of the flooding source 2.1 Monitor Control Room indications to assist in identifying the flooding source. NOTE2.2 The CCW System has detectable activity, RP assistance may be , required.

2.2 The following systems have the potential to flood the CCW Pump Room:

• Component Cooling Water system

• Fire Protection system

• Service Water system 11 RA-EP-02880 Revision 04 ATTACHMENT 2: FLOODING AFFECTING THE CCW PUMP ROOM (Continued)

Page 2 of2 WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE3.l The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required.

3 .1 Leak isolation may be performed by:

• Manual or remote isolation of affected piping

• Shutdown of pumps 3.2 REFER TO RA-EP-01500, Emergency Classification, to determine any required Emergency Action Levels. " 3.3 For plant restoration GO TO Step 6.3.

12 ATTACHMENT 3: FLOODING AFFECTING THE ECCS ROOMS Page 1 of2 1.0 Symptoms 1.1 High sump level alarm from: 1.1.1 ECCS room 1 1.1.2 ECCS room2 1.1.3 Decay Heat Cooler pit. 1.2 High/low tank level alarm from: 1.2.1 Miscellaneous Waste Drain Tank (high) 1.2.2 CCW surge tank (low) 1.2.3 BWST (low) RA-EP-02880 Revision 04 1.2.4 Low makeup tank level and automatic alignment of the makeup pump suction to the BWST. 1.3 High flow (low pressure) indications for affected systems: 1.3.1 Service water system 1.3.2 Control room alarm on high makeup system pump flow depending on pipe rupture location.

1.4 System's automatic response to high flow rates (low pressure):

1.4.1 Fite suppression system Auto pump start(s) l .4\2 . Service water isolation of secondary loads. 1.5 Automatic non-essential header isolation due to lowering CCW surge tank level. 1.6 Low flow (low pressure) indications for affected systems: 1.6.1 Control room alarm on low makeup system pump flow depending on pipe rupture location.

1.6.2 Control room alarm on RCP low seal water flow.

.. 13 RA-EP-02880 Revision 04 ATTACHMENT 3: FLOODING AFFECTING THE ECCS ROOMS (Continued)

Page 2 of2 2.0 Determination of the flowing source 2.1 Monitor Control Room indications to assist in identifying the flooding source. NOTE2.2 Contamination is likely in these rooms, RP assistance will be required.

2.2 The following systems have the potential to flood the ECCS Pump Room: .'

• Borated Water Storage Tank system

• Component Cooling Water system

• Fire Protection system

• Service Water system

• Makeup system

• Emergency Feedwater WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE 3.1 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions maybe required.

3.1 Leak isolation may be performed by:

• Manual or remote isolation of affected piping.

• Shutdown of pumps 3.2 REFER TO RA-EP-01500, Emergency Classification, to determine any required Emergency Action Levels. 3.3 For plant restoration GO TO Step 6.3 ROOM # 50 101 202 208 209 225 227 236 237 238 240 252 253 260 EFWF 303 304 312 314 318 319 14 RA-EP-02880 Revision 04 ATTACHMENT 4: POTENTIAL SOURCES OF INTERNAL FLOODING Page 1of1 SCRN MFW& MN ROOM NAMES SW WASH FP BWST COND DW STM MAKEUP Screen Pump Room x x x Pipe Tunnel x Pioe Way Area Mechanical Penetration Room No. 1 x x* Corridor to Mechanical Penetration x x x x Room No. 1 Make-up Pump Room x Passage to Mechanical Penetration x RoomNo.2 Mechanical Penetration Room No. 2 x Auxiliary Feed Pump Room No. I x Auxiliary Feed Pump Room No. 2 x Boric Acid Addition Tanks Room Main Feedwater Pumps Room (West x Condenser Pit) Condensate Pumps Pit x Circ Water Pump House Substructure Area EFW Pump Room x Mechanical Penetration Room No. 3 x x Corridor to Mechanical Penetration x x Room No. 3 Spent Fuel Pool Pump Room x -Mechanical Penetration Room No. 4 x x x Emergency Diesel Generator Room x x No. I Emergency Diesel Generator Room x x No.2 ccw DH cw BF x x x x x x x x x x x x x x '

• Floor Drain (8) e Equipment Drain (1) 0 Plugs and 0 Tools I

• I

• 15 RA-EP-02880 Revision 04 ATTACHMENT 5: PIPE TUNNEL DRAINS ARRANGEMENT Page 1of1 ::======:::>8

--. -* -I F12C I 1 111 I 111111 I I I I I I I I I I I I I I I I I I I I SWP#1 CTMU # 1 SW# 3 CTMU#2 SWP#2 *

• 16 ATTACHMENT 6: FLOODING AFFECTING THE EFWF Page 1 of2 1.0 Symptoms 1.1 "EFW SYSTEM TRBL" 10-6-G

• Low EWST Level -T89

• EFWF Sump Level Alarm 1.2 High/low tank level alarm from: 1.2.1 T89 EWST ("EFW SYSTEM TRBL" 10-6-G) 1.3 System's automatic response to high flow rates (low pressure):

1.4.1 Fire suppression system Auto pump start(s) RA-EP-02880 Revision 04 1.4 Low flow (low pressure) indications with EFW system in operation could be indicative of a pipe break. 2.0 Determination of the flowing source 2.1 Monitor T89 EWST level indications to assist in identifying the flooding source. NOTE 2.2 NORM-LP-7202 lists required notifications when FLEX or EFW equipment is unavailable to perform its required functions. 2.2 The following systems have the potential to flood the EFW Facility:

• Emergency F eedwater system

• Fire Protection system 17 ATTACHMENT 6: FLOODING AFFECTING THE EFWF Page 2 of2 WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE 3.1 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required. 3.1 Leak isolation may be performed by:

• Manual or remote isolation of affected piping.

• Shutdown of pumps RA-EP-02880 Revision 04 3.2 REFER TO RA-EP-01500, Emergency Classification, to determine any required Emergency Action Levels. 3.3. WHEN the leak is isolated, THEN review required specifications for any affected FLEX Program Equipment, AND EFW System Equipment.

REFER TO NORM-LP-7202, Davis-Besse Specifications for FLEX Equipment Out of Service. 3.4 For plant restoration GO TO Step 6.3.

D Copy Holder Number: 1665 Transmittal Number: DB-o4302016-252834 FE NOC Davis-Besse Power Station Transmittal Report Name: DOC. CONTROL DESK Location / Address: OFFSITE / USNRC DMSION OF EMERGENCY PREPAREDNESS One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Unit Document Number Doc Type Sheet/Section Revision Version Change Type Change Number Document Status DBl RA-EP-02880 DBl RA-EP-02880 PROC PROC 0003 APPROVED REVISED Data Date Time: 04/30/2016 08:59:20 AM Page 1of1 Transmittal Date: 4/30/2016 7:52:35 AM HC AC CD TOCl TOC2 Changes 0 0 0 0 EPON EPON Use this document transmittal to update the identified documents and remove the superseded documents from use.

\ Page 1of17 Davis-Besse Nuclear Power Station PROCEDURE RA-EP-02880 INTERNAL FLOODING REVISION04 Prepared by: Ron Tyrie Procedure OW11er: Superintendent

-Nuclear Operations Effective Date: 04/30/16 LEVEL OF USE: STEP-BY-STEP 2 INTERNAL FLOODING TABLE OF CONTENTS RA-EP-02880 Revision 04 1.0 PURPOSE .....................................................................................................................................

3

2.0 REFERENCES

...................... " ........................................................................................................

3 3.0 DEFINITIONS

..............................................................................................................................

3 4.0 RESPONSIBILITIES

....................................................................................................................

3 5.0 INITIATING CONDITIONS

........................................................................................................

3 6.0 PROCEDURE

...............................................................................................................................

4 6.1 Flooding in Areas that Affect Safe Shutdown Systems ..... : ............................................

.4 6.2 Flooding in the Emergency Feedwater Facility ..............................................................

.4 6.3 Flooding in All Other areas ..............................................................................................

4 6.3 Cleanup of the Affected Areas .........................................................................................

5 6.4 Equipment restoration

......................................................................................................

5 7.0 FINAL CONDITIONS

..................

...............................................................................................

6 8.0 RECORDS ....................................................................................................................................

6 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM ...............

7 ATTACHMENT 2: FLOODING AFFECTING THE CCW PUMP ROOM ......................................

10 ATTACHMENT 3: FLOODING AFFECTING THE ECCS ROOMS ..............................................

12 ATTACHMENT 4: POTENTIAL SOURCES OF INTERNAL FLOODING ...................................

14 ATTACHMENT 5: PIPE TUNNEL DRAINS ARRANGEMENT

....................................................

15 ATTACHMENT 6: FLOODING AFFECTING THE EFWF .............................................................

16

/ 3 1.0 PURPOSE

• RA-EP-02880 Revision 04 This procedure provides guidance for actions to be taken for internal flooding incidents.

2.0 REFERENCES

2.1 Developmental 2.1.1 Assessment of the Internal Flood Hazard for the Davis-Besse Nuclear Power Station, SAR OS, September 1989. 2.1.,2 INPO SOER 85-5, Internal Flooding of Power Plant Buildings, December 30, 1985. 2.1.3 ECP 13-0195, Emergency Feedwater Facility 2.1.:4 ECP 13-0196, Emergency Feedwater System 2.2 Implementation 2.2.1 RA-EP-01500, Emergency Classification 2.2.2 RA-EP-02720, Recovery Organization 2.2.3 NOP-SS-3300, FirstEnergy Enterprise Records Management Program 2.2.4 NORM-LP-7202, Davis-Besse Specifications for FLEX Equipment Out of Service 3.0 DEFINITIONS 3.1 INTERNAL FLOODING-Flooding that occurs from breaches of water systems that are located inside plant buildings and are connected to large water sources such as Intake Forebay or tanks. 4.0 RESPONSIBILITIES 4.1 The Shift Manager shall implement this procedure in the event of internal flooding that constitutes a threat to:

• Personnel Safety

• Safe Shutdown capability

• Power production capability

• Diverse And Flexible Coping Strategies capability (FLEX I EFW) 5.0 INITIATING CONDITIONS This procedure shall be implemented upon Control Room identification of internal flooding incidents that exceed the existing Station Drainage System's removal capability AND constitutes a threat to: (1) Personnel Safety, or (2) Safe Shutdown capability, or (3) Power production capability, or (4) Diverse And Flexible Coping Strategies capability (FLEX I EFW).

4 6.0 PROCEDURE 6.1 . Flooding in Areas that Affect Safe Shutdown Systems RA-EP-02880 Revision 04 6.1.1 Service Water Pump Room and Adjacent Areas; GO TO ATTACHMENT 1, FLOODING AFFECTING THE SERVICE WATER PUMP ROOM. 6.1.2 Component Cooling Water.Pump Room; GO TO ATTACHMENT 2, FLOODING AFFECTING THE CCW PUMP ROOM. 6.1.3 Emergency Core Cooling Systemroom(s);

GO TO ATTACHMENT 3, FLOODING AFFECTING THE ECCS ROOMS. 6.2 Flooding in Areas that Affect the Diverse and Flexible Coping Strategies 6.2.1 Emergency Feedwater Facility, GO TO ATTACHMENT 6, FLOODING AFFECTING THEEFWF. 6.3 Flooding in All Other areas 6.3.l Symptoms

• High sump level alarms.

• High flow (low pressure) indications for affected systems.

• Automatic system response to high flow rates.

• High or low tank level indications.

NOTE6.3.2 Attachment 4 contains the areas analyzed to be susceptible to internal flooding.

WARNING 6.3.2 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

6.3.2 Determine the source of flooding, REFER TO ATTACHMENT 4, POTENTIAL SOURCES OF INTERNAL FLOODING.

J

• Monitor Control Room indications to assist in identifying the flooding source.

• Dispatch an operator to investigate the source of the problem.

5 NOTE 6.3.3 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required.

6.3 .3 Leak isolation may be performed by:

• Manual or remote isolation of affected piping.

• Shutdown of pumps NOTE6.4 Water to be removed after a flooding incident may be 'contaminated, contain oil, or other chemicals subject to legal release limitations.

6.4 Cleanup of the Affected Areas 6.4.1 IF the water to be removed is:

• Potentially contaminated

• Contains oil

• Contains other chemicals subject to legal discharge limits, RA-EP-02880 Revision 04 THEN notify Radiation Protection and/or Chemistry to obtain assistance in determining how to dispose of the water and determine if external notifications are required.

6.4.2 Notify Maintenance if additional resources are required to remove the water and/or clean the area. 6.4.3 Notify the appropriate maintenance group to inspect equipment that appears to have been submerged or sprayed during the incident.

6.5 Equipment restoration 6.5 .1 WHEN potentially effected equipment has been inspected and released by the responsible organizations, THEN return the equipment to service as necessary.

6 7.0 FINAL CONDITIONS RA-EP-02880 Revision 04 Use of this procedure shall be terminated when one of the following conditions are applicable:

7 .1 The flooding condition has been corrected, cleanup is completed, and necessary equipment is restored or removed from service for corrective maintenance.

7.2 Cleanup and restoration is being conducted as a part ofRA-EP-02720, Recovery Organization.

8.0 RECORDS 8.1 The following quality assurance records are completed by this procedure and shall be listed on the Records List, captured and submitted to Records.Management in accordance with NOP-SS-3300, FirstEnergy Enterprise Records Management Program: 8.1.1 None 8.2 The following non-quality assurance records are completed by this procedure and shall be listed on the Records List, captured and submitted to Records Management in accordance with SS-3300, FirstEnergy Enterprise Records Management Program: 8.2.1 None 7 RA-EP-02880 Revision 04 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM Page 1 of3 1.0 Symptoms 1.1 High sump level alarm from: 1.1.1 Diesel fire pump room 1.1.2 Service water valve room 2 1.2 High flow (low pressure) indications for affected systems: 1.2.1 Service water system 1.2.2 Water treatment system 1.3 System's automatic response to high flow rates (low pressure):

1.3 .1 Fire suppression system Auto. pump start( s) 1.3 .2 Cooling tower makeup pump trip 1.3 .3 Service water isolation of secondary loads 2.0 Determination of the flowing source I 2.1 Monitor Control Room indications to assist in identifying the flooding source. 2.2 The following areas have the potential to flood the Service Water Pump Room. 2.2.1 Room 51, Diesel fire pump room flooding sources:

• Fire suppression piping

• Screen wash piping 2.2.2 Room 52, Service water pump room flooding sources:

• Service water piping

• Fire suppression piping

• Cooling tower makeup piping 8 RA-EP-02880 Revision 04 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM (Continued)

Page 2 of3 2.2.3 Room 53, Service water valve room flooding sources:

• Service water piping

• Fire suppression piping

• Water treatment piping

• Cooling tower makeup piping WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE 3.1 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required.

3 .1 Leak isolation may be performed by: * -Manual or remote isolation.

of affected piping

• Shutdown of pumps 3.2 Non-isolable flooding may occur in the service water valve room. A break in the service water return line piping may result in back leakage from the forebay or intake structure.

9 RA-EP-02880 Revision 04 ATTACHMENT 1: FLOODING AFFECTING THE SERVICE WATER PUMP ROOM (Continued)

Page 3 of3 NOTE 3.3 For the maximum postulated flood it will take approximately 20 minutes to reach the level at whfoh drain plugging is not feasible.

3 .3 WHEN the flooding is in the service water valve room, THEN plug the floor drains in the service water pump room and the diesel fire pump room. REFER TO Attachment 5, Pipe Tunnel Drain Arrangement.

3.4 REFER TO RA-EP-01500, Emergency Classification, to determine' any required Emergency Action Levels. 3.5 For plant restoration GO TO Step 6.3. \

10 RA-EP-02880 Revision 04 ATTACHMENT 2: FLOODING AFFECTING THE CCW PUMP ROOM Page 1 of2 1.0 Symptoms 1.1 High/low tank level alarm from: 1.1.1 Miscellaneous Waste Drain Tank (high) 1.1.2 CCW surge tank (low) 1.2 High flow (low prt:ssure) indications for affected systems: 1.2.1 Service Water system 1.2.2 Component Cooling Water system 1.3 System's automatic response to high flow rates (low pressure):

1.3 .1 Fire suppression system Auto pump start( s) 1.3 .2 Service water isolation of secondary loads 1.4 Automatic header isolation due to lowering CCW surge tank level. 2.0 Determination of the flooding source 2.1 Monitor Control Room indications to assist in identifying the flooding source. NOTE2.2 The CCW System has detectable activity, RP assistance may be , required.

2.2 The following systems have the potential to flood the CCW Pump Room:

• Component Cooling Water system

• Fire Protection system

• Service Water system 11 RA-EP-02880 Revision 04 ATTACHMENT 2: FLOODING AFFECTING THE CCW PUMP ROOM (Continued)

Page 2 of2 WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE3.l The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required.

3 .1 Leak isolation may be performed by:

• Manual or remote isolation of affected piping

• Shutdown of pumps 3.2 REFER TO RA-EP-01500, Emergency Classification, to determine any required Emergency Action Levels. " 3.3 For plant restoration GO TO Step 6.3.

12 ATTACHMENT 3: FLOODING AFFECTING THE ECCS ROOMS Page 1 of2 1.0 Symptoms 1.1 High sump level alarm from: 1.1.1 ECCS room 1 1.1.2 ECCS room2 1.1.3 Decay Heat Cooler pit. 1.2 High/low tank level alarm from: 1.2.1 Miscellaneous Waste Drain Tank (high) 1.2.2 CCW surge tank (low) 1.2.3 BWST (low) RA-EP-02880 Revision 04 1.2.4 Low makeup tank level and automatic alignment of the makeup pump suction to the BWST. 1.3 High flow (low pressure) indications for affected systems: 1.3.1 Service water system 1.3.2 Control room alarm on high makeup system pump flow depending on pipe rupture location.

1.4 System's automatic response to high flow rates (low pressure):

1.4.1 Fite suppression system Auto pump start(s) l .4\2 . Service water isolation of secondary loads. 1.5 Automatic non-essential header isolation due to lowering CCW surge tank level. 1.6 Low flow (low pressure) indications for affected systems: 1.6.1 Control room alarm on low makeup system pump flow depending on pipe rupture location.

1.6.2 Control room alarm on RCP low seal water flow.

.. 13 RA-EP-02880 Revision 04 ATTACHMENT 3: FLOODING AFFECTING THE ECCS ROOMS (Continued)

Page 2 of2 2.0 Determination of the flowing source 2.1 Monitor Control Room indications to assist in identifying the flooding source. NOTE2.2 Contamination is likely in these rooms, RP assistance will be required.

2.2 The following systems have the potential to flood the ECCS Pump Room: .'

• Borated Water Storage Tank system

• Component Cooling Water system

• Fire Protection system

• Service Water system

• Makeup system

• Emergency Feedwater WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE 3.1 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions maybe required.

3.1 Leak isolation may be performed by:

• Manual or remote isolation of affected piping.

• Shutdown of pumps 3.2 REFER TO RA-EP-01500, Emergency Classification, to determine any required Emergency Action Levels. 3.3 For plant restoration GO TO Step 6.3 ROOM # 50 101 202 208 209 225 227 236 237 238 240 252 253 260 EFWF 303 304 312 314 318 319 14 RA-EP-02880 Revision 04 ATTACHMENT 4: POTENTIAL SOURCES OF INTERNAL FLOODING Page 1of1 SCRN MFW& MN ROOM NAMES SW WASH FP BWST COND DW STM MAKEUP Screen Pump Room x x x Pipe Tunnel x Pioe Way Area Mechanical Penetration Room No. 1 x x* Corridor to Mechanical Penetration x x x x Room No. 1 Make-up Pump Room x Passage to Mechanical Penetration x RoomNo.2 Mechanical Penetration Room No. 2 x Auxiliary Feed Pump Room No. I x Auxiliary Feed Pump Room No. 2 x Boric Acid Addition Tanks Room Main Feedwater Pumps Room (West x Condenser Pit) Condensate Pumps Pit x Circ Water Pump House Substructure Area EFW Pump Room x Mechanical Penetration Room No. 3 x x Corridor to Mechanical Penetration x x Room No. 3 Spent Fuel Pool Pump Room x -Mechanical Penetration Room No. 4 x x x Emergency Diesel Generator Room x x No. I Emergency Diesel Generator Room x x No.2 ccw DH cw BF x x x x x x x x x x x x x x '

• Floor Drain (8) e Equipment Drain (1) 0 Plugs and 0 Tools I

• I

• 15 RA-EP-02880 Revision 04 ATTACHMENT 5: PIPE TUNNEL DRAINS ARRANGEMENT Page 1of1 ::======:::>8

--. -* -I F12C I 1 111 I 111111 I I I I I I I I I I I I I I I I I I I I SWP#1 CTMU # 1 SW# 3 CTMU#2 SWP#2 *

• 16 ATTACHMENT 6: FLOODING AFFECTING THE EFWF Page 1 of2 1.0 Symptoms 1.1 "EFW SYSTEM TRBL" 10-6-G

• Low EWST Level -T89

• EFWF Sump Level Alarm 1.2 High/low tank level alarm from: 1.2.1 T89 EWST ("EFW SYSTEM TRBL" 10-6-G) 1.3 System's automatic response to high flow rates (low pressure):

1.4.1 Fire suppression system Auto pump start(s) RA-EP-02880 Revision 04 1.4 Low flow (low pressure) indications with EFW system in operation could be indicative of a pipe break. 2.0 Determination of the flowing source 2.1 Monitor T89 EWST level indications to assist in identifying the flooding source. NOTE 2.2 NORM-LP-7202 lists required notifications when FLEX or EFW equipment is unavailable to perform its required functions. 2.2 The following systems have the potential to flood the EFW Facility:

• Emergency F eedwater system

• Fire Protection system 17 ATTACHMENT 6: FLOODING AFFECTING THE EFWF Page 2 of2 WARNING2.3 Advise operators to use extreme caution when opening doors leading to rooms with potential internal flooding.

2.3 Dispatch an operator to investigate the source of the problem. 3.0 Isolation of the flooding source NOTE 3.1 The desired method of isolation will vary with the leak location and rate of leakage. Drastic actions may be required. 3.1 Leak isolation may be performed by:

• Manual or remote isolation of affected piping.

• Shutdown of pumps RA-EP-02880 Revision 04 3.2 REFER TO RA-EP-01500, Emergency Classification, to determine any required Emergency Action Levels. 3.3. WHEN the leak is isolated, THEN review required specifications for any affected FLEX Program Equipment, AND EFW System Equipment.

REFER TO NORM-LP-7202, Davis-Besse Specifications for FLEX Equipment Out of Service. 3.4 For plant restoration GO TO Step 6.3.