ML20073G290

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Proposed Tech Specs Change to Revise Shutdown Ac Source TS to Allow one-time Extension from 7 to 14 Days of AOT for Class 1E Emergency Power Source
ML20073G290
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 09/23/1994
From:
BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20073G246 List:
References
NUDOCS 9410040082
Download: ML20073G290 (5)
v • d • e


Text

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3/4.7 PLANT SYSTEMS 3/4.7.6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM LIMITING CONDITION FOR OPERATION 3.7.6.1 The Control Room Emergency Ventilation System shall be OPERA 8LE with:

a. Two filter trains,
b. Two air conditioning units,
c. Two isolation valves in each Control Room outside air intake duct,
d. Two isolation valves in the common exhaust to atmosphere duct, and
e. One isolation valve in the toilet area exhaust duct.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

a. With one filter train inoperable, restore the inoperable train to n , OPERABLE status within 7 days r be in at least HOT STAND 8Y within the'next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and n 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 />. p
b. With one air conditioning unit inope ble, restore the inoperable unit 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 />.
c. With one isolation valve per Control Room outside air intake duct inoperable, operation may continue provided the other isolation valve in the same duct is maintained closed; otherwise, be in at least NOT STANDBY within 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 />.
d. With one common exhaust to atmosphere duct isolation valve inoperable, restore the inoperable valve to OPERABLE status within 7 days or be in at least NOT 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 />.
e. With the toilet area exhaust duct isolation valve inoperable, restore the inoperable valve to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-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 within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

Add IW6ar4 estvraT CLIFFS - UNIT 1 3/4 7-16 Amenc:en: No. 186 f 9410040082 DR 940923 ADOCK 05000317 PTOR

{

INSERT A i l

During the No. 21 emergency diesel generator upgrade in the 1995 Unit 2 refueling  ;

outage, the time to restore No.12 filter train or air conditioning unit to OPERABLE l status may be extended to 30 days (for loss of emergency power only) if the following is I performed:

1. A temporary diesel generator shall be demonstrated available by starting it at least f once per 7 days.
2. If ACTION 1 is not met, restore compliance with the ACTION within 7 days or  !

be in at least IIOT 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  ;

SIlUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. l t

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ATTACilMENT 2 UNIT 2 TECIINICAL SPECIFICATION REVISED PAGE 3/4 8-7 3/4 8-12

. 3/4.8 ELECTRICAL POWER SYSTEMS .

LIMITING CONDITION FOR OPERATION (Continued)

3. All containment penetrations providing direct access from the (

containment atmosphere to the outside atmosphere shall be <,

either closed by an isolation valve, blind flange, or manual valve, or be capable of being closed by an OPERABLE automatic

( >

purge valve. A minimum of one door in each airlock shall be ( '

closed and the equipment door shall be closed and held in <

I place by a minimum of four bolts.

b. With less than the above minimum required A.C. electrical power sources OPERABLE for the performance of Surveillance**Requirement 4.8.1.1.2.d.1 on No. 12 emergency diesel generator:
1. Verify either two 500 kV offsite power circuits or a 500 kV offsite power circuit and the 69 kV SMECO offsite power circuit are available and capable of being used. This  :

availability shall be verified prior to removing the OPERABLE emergency diesel generators and once per shift thereafter,

2. Suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel and movement of heavy loads over irradiated fuel,
3. All containment penetrations providing direct access from the 2 containment atmosphere to the outside atmosphere shall be g either closed by an isolation valve, blind flange, or manual )

valve, or be capable of being closed by an OPERABLE automatic purge valve. A minimum of one door in each airlock shall be

(

(

closed and the equipment door shall be closed and held in  ? ,

place by a minimum of four bolts. /

4. An emergency diesel generator shall be OPERABLE and aligne to provide power to the emergency busses within seven days'
5. Within two weeks prior to the planned unavailability of an OPERABLE emergency diesel generator, a temporary diesel  ;

generator shall be demonstrated available.

6. A temporary diesel generator shall be demonstrated available by starting it at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.  ;
7. If ACTIONS b) I through b) 6 are not met, restore compliance with the ACTIONS within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or restore an OPERABLE j ergency diesel generator within the next 4 hou '

$ kRhay +he 89C (hH 2. Refuel % Ohy, M weQMCf O"*l$'"#

&ll be OPEUke" ad affNef h PRea ?ewee lo w emeyerkij bus -

M&c Ac4cca days.

The provisions of ACTION b) are no longer applicable following the installation of two additional emergency diesel generators.

CALVERT CLIFFS - UNIT 2 3/4 8-7 AmendmentNo./7/ l i

, --. l

. 3/4.8 ELECTRICAL POWER SYSTEMS LIMITINGCONDITIONFOROPERATION(Continued)

b. With less than the above minimum required A.C. electrical power sources OPERABLE for the performance of Surveillance Requirement 4.8.1.1.2.d.1 on No.12 emergency diesel generator:"
1. Verify either two 500 kV offsite power circuits or a 500 kV offsite power circuit and the 69 kV SMECO offsite power circuit are available and capable of being used. This availability shall be verified prior to removing the OPERABLE emergency diesel generators and once per shift thereafter,
2. Suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel and movement of heavy loads over irradiated fuel,
3. All containment penetrations providing direct access from the $

containment atmosphere to the outside atmosphere shall be  %

either closed by an isolation valve, blind flange, or manual 4 '

valve, or be capable of being closed by an OPERABLE automatic $

purge valve. A minimum of one door in each airlock shall be ( ,

closed and the equipment door shall be closed and held in place by a minimum of four bolts. (6

4. An emergency diesel generator shall be OPERABLE and alignem to provide power to the emergency busses within seven days (dU
5. Within two weeks prior to the planned unavailability of an OPERABLE emergency diesel generator, a temporary diesel generator shall be demonstrated available.
6. A temporary diesel generator shall be demonstrated available by starting it at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
7. If ACTIONS b) I through b) 6 are not met, restore compliance with the ACTIONS within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or restore an OPERABLE emergency diesel generator within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.2 The specified A.C. busses shall be determined OPERABl.E and i energized from A.C. sources other than the diesel generators ut least once per 7 days by verifying correct breaker alignment and indicated power availabilit

  • Dak %e /Wud/4 Refseli lufiON emenyNey diese/yivrealtz 6/l be CPRAble da/igned 4 PM: pu>ee vb on emaym.y L uc &M ekeudnyr. l The provisions of ACTION b. are no longer applicable following the  !

J installation of two additional emergency diesel generators.

CALVERT CLIFFS - UNIT 2 3/4 8-12 AmendmentNo.4%1' l

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t ATTACHMENT 3 PRE-OUTAGE AND POST SPLICE BOX ELECTRICAL r DISTRIBUTION CONFIGURATIONS FIGURES ;

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e ATTACIIMENT (3)

PRE-OUTAGE ELECTRICAL ,

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