ML20209C151

Proposed Tech Specs Pages Re Amend to License NPF-80, Changing TSs 3.3.2 & 3.7.8 Allowing All Fuel Handling Bldg Exhaust Air Sys Components to Be Inoperable for Period of 8 Hours to Facilitate Repair of Train B Exhaust Booster Fan

ML20209C151
Person / Time
Site:	South Texas
Issue date:	07/01/1999
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20209C149	List: ML20209C151 NOC-AE-000578, Application for Amend to License NPF-80 to Change TSs 3.3.2 & 3.7.8 to Allow All Fuel Handling Bldg Exhaust Air Sys Components to Be Inoperable for Period Not to Exceed 8 Hours to Facilitate Repair of Train B Exhaust Booster Fan
References
NUDOCS 9907090185
Download: ML20209C151 (11)

Text

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4 NOC-AE-000578 i

Page 2 of 7 l

Annotated Technical Specification and Bases Pages The following Technical Specification and Bases pages are annotated with changes designated by change bars in the richt hand column.

Page 3/4 3/28 Page 3/4 7-19 Page B 3/4 7-4 with Insert 1

9907090185 990701 PDR ADOCK 05000499 p

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NOC-AE-000578 Page 3 of 7 TABLE 3.3-3 (Continued)

ACTION STATEMENTS (Continued)

ACTION 26-With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, declare the affected Auxiliary Feedwater Pt. np inoperable and take ACTION required by Specification 3.7.1.2.

9 ACTION 27-MODES 1,2,3,4: With the number of OPERABLE channels one less than the a

Minimum Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

MODES 5 and 6: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, restore the inoperable Channel to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or initiate and maintain operation of the Control Room Makeup and Cleanup Filtration System (at 100% capacity) in the recirculation and makeup filtration mode.

ACTION 28-MODES 1,2,3,4: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, within I hour isolate the Control Room Envelope and maintain operation of the ventilation system in the filtered recirculation mode.

MODES 5 and 6: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, within I hour initiate and maintain operation of the Control Room Makeup and Cleanup Filtration System (at 100% capacity) in the recirculation and makeup filtration mode.

ACTION 29*- MODES 1,2,3,4: With the number of OPERABLE channels one less than the l

Minimum Channels OPERABLE req'airement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or either initiate and maintain operation of the FHB exhaust air filtration system (at 100% capacity) or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

ACTION 30- With irradiated fuel in the spent fuel pool: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, fuel movement within the spent fuel pool or crane operation with loads over the spent fuel pool may proceed provided the FHB exhaust air filtration system is in operation and discharging through at least one train of HEPA filters and charcoal adsorbers.

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• With 2 or more FHB Exhaust Air actuation channels inoperable, restore the FHB Exhaust Air actuation channels to a condition that satisfies the ACrlON statement above within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN in the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

This exception is effective until July 14,1999 for Unit 2 only. The exception may be used twice during j

this time period.

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1 NOC-AE-000578 Page 4 of 7 PLANT SYSTEMS -

3/4 7 R FUEL MANDi.IliG BTIII DING (FHB) EXHAIIST AIR SYSTFM LIMITING CONDITION FOR OPERATION 3.7.8 The FHB Exhaust Air System comprised of the following components shall be OPERABLE:

a.

Two independent exhaust air filter trains, b.

Three independent exhaust booster fans, c.

Three independent main exhaust fans, and d.

Associated dampers.

APPLICABILITY: MODES 1,2,3, and 4.

k ACTION:

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- With less than the above FHB Exhaust Air System components OPERABLE but with at least one FHB exhaust air filter train, two FHB exhaust booster fans, two FHB main exhaust fans and associated dampers OPERABLE, restore the inoperable system to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.7.8 The Fuel Handling Building Exhaust Air System shall be demonstrated OPERABLE:

a.

At least once per 31 days on a STAGGERED TEST BASIS by initiating, from the control room, flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 10 continuous hours with the heaters operating with two of the three exhaust booster fans and two of the

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three main exhaust fans operating to maintain adequate air flow rate;

b. At least once per 18 months and (1) after any structural maintenance one the HEPA filter or charcoal adsorber housings, or (2) following painting, fire, or chemical release in any ventilation zone communicating with the system by.:

1) Verifying that the cleanup system satisfies the in-place penetration and bypass leakage testing acceptance criteria of less than 0.05% for HEPA filter banks and 0.10% for charcoal adsorber banks and uses the test procedure guidance in Regulatory Positions C.S.a. C.5.c, and C.5.d of Regulatory Guide 1.52, Revision 2, March 1978, and the system flow rate is 29,000 cfm t 10%;

2) ' Verifying, within 31 days after removal, that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52,

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NOC-AE-000578 Page 5 of 7 I

• With ALL FHB Exhaust Air System components inoperable, restore the FHB Exhaust Air System to a condition that satisfies the ACTION statement above within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN in the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. This exception is j

effective until July 14,1999 for Unit 2 only. The exception may be used twice during this time period.

SOUTH TEXAS - UNITS 1 & 2 3/4 7-19 i

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NOC-AE-000578 Page 6 of 7 PLANT SYSTEMS BASES The limitations on minimum water level and maximum temperature are based on i

providing a 30-day cooling water supply to safety-related equipment without exceeding its design basis temperature and is consistent with the recommendations of Regulatory Guide 1.27, " Ultimate Heat Sink for Nuclear Plants," March 1974.

3/4.7.6 (Not used) 3/4.7.7 CONTROL ROOM MAKEUP AND CLEANUP FILTRATION SYSTEM The OPERABILITY of the Control Room Makeup and Cleanup Filtration System ensures that: (1) the ambient air temperature does not exceed the allowable temperature for continuous-duty rating for the equipment and instrumentation cooled by this system, and (2) the control room will remain habitable for operations personnel during and following all credible accident conditions. Operation of the system with the heaters operating for at least 10 continuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the adsorbers and HEPA filters. The OPERABILITY of this system in conjunction with control room design provisions is based on limiting the radiation exposure to personnel occupying the control room to 5 rems cr less whole body, or its equivalent. This limitation is consistent with the requirements of General Design Criterion 19 of Appendix A,10 CFR Part 50. ANSI N510-1980 will be used as a procedural guide for surveillance testing.

3/4.7.8 FUEL HANDLING BUILDING EXHAUST AIR SYSTEM The OPERABILITY of the Fuel Handling Building Exhaust Air System ensures that radioactive materials leaking from the ECCS equipment within the FHB following a LOCA are filtered prior to reaching the environment. Operation of the system with the heaters operating for the least 10 continuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the adsorbers and HEPA filters. The operation of this system and the resultant effect on offsite dosage calculations was assumed in the safety analyses. ANSI N510-1980 will be used as a procedural guide for surveillance testing.

(INSERT) 3/4.7.9 (Not Used)

SOUTH TEXAS - UNITS 1 & 2 B 3/4 7-4 Unit 1 - Amendment No. 48,109 Unit 2 - Amendment No. 9 96

f NOC-AE-000578 i.

Page 7 of 7 Insert to page B3/4 7-4 l'

l Insert For Unit 2 only, from the date of amendment issuance through July 14,1999, the limited allowc2 outage time is allowed for all of components of the Fuel Handling Building Exhaust Air System to be out of service in recognition of the fact that there are common plenums and the repair to the exhaust booster fan requires opening or entry into these plenums. This is acceptable based on the low probability of a design basis event in the brief allowed outage time ar.d because administrative controls are imposed on the activities that provide for compensatory action to restore integrity of the system.

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NOC-AE-000573 Page 1 of 5 ATTACHMENT 7 Technical Specification and Bases Pages with Proposed Changes Incorporated i

NOC-AE-000578 Page 2 of 5 l

Technical Specification and Bases Pancs with Proposed Changes Incorporated i

The following Technical Specification ezd Bases pages, which incorporate the proposed changes in Attachment 6, are provided for NRC use in review of this submittal.

Page 3/4 3/28 Page 3/4 7-19 Page B 3/4 7-4 4

TABLE 3.3-3 (Continued) l l

ACTION STATEMENTS (Continued)

AGION 26-With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, declare the affected Auxiliary Feedwater Pump inoperable and take ACTION required by Specification 3.7.1.2.

AGION 27-MODES 1,2,3,4: With the number of OPERABLE channels one less than the Minimum Channels OPERA 3LE requirement, restore the inoperable channel to l

. OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

- MODES 5 and 6: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, restore the inoperable Channel to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or initiate and maintain operation of the Control Room Makeup and Cleanup Filtration System (at 100% capacity) in the recirculation and makeup filtration mode.

AGION 28-MODES 1,2,3,4: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, within I hour isolate the Control Room Envelope and maintain operation of the ventilation system in the filtered recirculation mode.

MODES 5 and 6: With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirement, within I hour initiate and maintain operation of the

)

Control Room Makeup and Cleanup Filtration System (at 100% capacity) in the recirculation and makeup filtration mode.

AGION 29*- MODES 1,2,3,4: With the number of OPERABLE channels one less than the l

Minimum Channels OPERABLE requirement, restore the inoperable channel to i

OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or either initiate and maintain operation of the FHB exhaust air filtration system (at 100% capacity) or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

AGION 30- With irradiated fuel in the spent fuel pool: With the number of OPERABLE channels less t%n the Minimum Channels OPERABLE requirement, fuel movement within the spen. Tuel pool or crane operation with loads over the spent fuel pool may proceed provided the FHB exhaust air filtration system is in operation and discharging through at least one train of HEPA filters and charcoal adsorbers.

• With 2 or more FHB Exhaust Air actuation channels inoperable, restore the FHB Exhaust Air actuation channels to a condition that satisfies the ACTION statement above within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN in the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

This exception is effective until July 14,1999 for Unit 2 only. The exception may be used twice during this time period.

SOUTH TEXAS - UNITS 1 & 2 3/4 3-28 5

PLANT SYSTEMS 3/4 73 FITFT HANDI ING RIIH nING (FHB) FYHAIIST AIR SYSTEM l

LIMITING CONDITION FOR OPERATION 3.7.8 The FHB Exhaust Air System comprised of the following components shall be OPERABLE:

a.

Two independent exhaust air filter trains, b.

Three independent exhauct booster fans, c.

Three independent main exhaust fans, and d.

Associated dampers.

APPLICABILITY: MODES 1,2,3, and 4.'

ACTION:

• l With less than the above FHB Exhaust Air System components OPERABLE but with at least one FHB sxhaust air filter train, two FHB exhaust booster fans, two FHB main exhaust fans and associated dampers OPERABLE, restore the inoperable system to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS i

1 4.7.8 The Fuel Handling Building Exhaust Air System shall be demonstrated OPERABLE:

. a.

At least once per 31 days on a STAGGERED TEST BASIS by initiating, from the control room, flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 10 continuous hours with the heaters operating with two of the three exhaust booster fans and two of the three main exhaust fans operating to maintain adequate air flow rate;

b. At least once per 18 mombs and (1) after any structural maintenance on the HEPA filter or I

charcoal adsorber housings, or (2) following painting, fire, or chemical release in any ventilation

. zone communicating with the system by:

1) Verifying that the cleanup system satisfies the in-place penetration and bypass leakage testing acceptance criteria of less than 0.05% for HEPA filt.er banks and 0.10% for charcoal adsorber banks and uses the test procedure guidance in Regulatory Positions C.5.a. C.5.c, i

and C.S.d of Regulatory Guide 1.52, Revision 2, March 1978, and the system flow rate is 29,000 cfm t 10%;

' 2) Verifying, within 31 days ater removal, that a laboratory analysis of a representative etirbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52,

• With ALL RIB Exhaust Air System components inoperable, restore the FHB Exhaust Air System to a condition that satisfies the ACTION statement above within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least ilOT STANDBY within the next 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

- and in COLD SHUTDOWN in the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. This exception is effective until July 14,1999 for Unit 2 -

. only.' The exception may be used twice during this time period.

SOUTH TEXAS - UNITS 1 & 2-3/4 7-19

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PLANT SYSTEMS BASES

- The limitations on minimum water level and maximum temperature are based on providing a 30-day cooling water supply to safety-related equipment without exceeding its design basis temperature and is consistent with the recommendations of Regulatory Guide 1.27, " Ultimate Heat Sink for Nuclear Plants," March 1974.

3/4.7.6 (Not used) 3/4.7.7 CONTROL ROOM MAKEUP AND CLEANUP FILTRATION SYSTEM The OPERABILITY of the Control Room Makeup and Cleanup Filtration System ensures that: (1) the ambient air temperature does not exceed the allowable temperature for continuous-duty rating for the equipment and instrumentation cooled by this system, and (2)

, the control room will remain habitablo for operations personnel during and following all credible accident conditions. Operation of the system with the heaters operating for at least 10 continuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the adsorbers and HEPA filters. The OPERABILITY of this system in conjunction with control room

' design provisions is based on limiting the radiation exposure to personnel occupying Lie control room to 5 rems or less whole body, or its equivalent. This limitation is consistent with the requirements of General Design Criterion 19 of Appendix A,10 CFR Part 50. ANSI N510-1980 will be used as a procedural guide for surveillance testing.

3/4.7.8 FUEL HANDLING BUILDING EXHAUST AIR SYSTEM The OPERABILITY of the Fuel Handling Building Exhaust Air System ensures that radioactive materials leaking from the ECCS equipment within the FHB following a LOCA are 1

filtered prior to reaching the environment. Operation of the system with the heaters operating for the least 10 continuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the adsorbers and HEPA filters. The operation of this system and the resultant effect on offsite dosage calculations was assumed in the safety analyses. ANSI N510-1980 will be used as a procedural guide for surveillance testing.

For Unit 2 only, from the date of amendment issuance through July 14,1999, the limited

)

allowed outage time is allowed for all of components of the Fuel Handling Building Exhaust Air System to be out of service in recognition of the fact that there are common plenums and the l repair to the exhaust booster fan requires opening or entry into these plenums. This is acceptable based on the low probability of a design basis event in the brief allowed outage time and because administrative controls are imposed on the activities that provide for compensatory action to restore integrity of the system.

3/4.7.9 (Not Used)

SOUTH TEXAS - UNITS 1 & 2 B 3/4 7-4.

Unit 1 - Amendment No. 49,109 Unit 2 - Amendment No. 9 96 1

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