ML20094G927

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Proposed Tech Specs Re one-time Only Ac Sources AOT Extension
ML20094G927
Person / Time
Site: Millstone Dominion icon.png
Issue date: 11/02/1995
From:
NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20094G919 List:
References
NUDOCS 9511130263
Download: ML20094G927 (4)
v • d • e


Text

Docket No. 50-336

, B15422 Attachment 2 Millstone Nuclear Power Station, Unit No. 2 Proposed Revision to Technical Specifications One-Time Only A.C. Sources Allowed Outage Time Extension Marked-up Pages November 1995 YDR h

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6/14/94

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3/4.8 ELECTRICAL POWER SYSTDi$

y4.3.1 A.C. SOURCES 2

SPDIATING

. LINITING COWITION FOR OPDIATION 3.8.l.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a. Two physically independent circuits between the offsite trans-mission network and the switchyard, and
b. Two separate and independent diesel generators each with a separate fuel oil supply tank containing a minimum of 12,000 gallons of fuel. ,

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

ACIl0N:

a. With one offsite circuit inoperable, demonstrate the OPERABILITY '

of the remaining A.C. sources by perfoming Surveillance Requirement 4.8.1.1.1 within I hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. If either diesel generator has not been successfully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstrate its OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.2 separately for each such diesel generator within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. I Restore the offsite circuit to OPERABLE status within 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />  :

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 I 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 />. l

b. With one diesel generator inoperable, demonstrate the OPERABILITY of the A.C. offsite sources by performing Surveillance Requirement 4.'8.1.1.1 within I hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the diesel generator became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generator by performing Surveillance 4

Requirement 4.8.1.1.2.a.1 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> *; restore the diesel generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least i

HDT 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 followino .

! # Excep+ bt once. clurin ne 64illsbe. Wi+ No.1 C ele.15 Refwelin Ouh e.' Oii, ~72. hour Allowaci o h 3e Me. cem he ex4en d to '7 clays .

  • This test is re utred to be completed regardless of when the inoperable j diesel generator s restored to an OPERABLE status.

RILLSTONE - 181IT 2 3/48-1 Amendment No.#,

177, i

i t' * ,

Dpcket No. 50-336  !

B15422  ;

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Attachment 3 Millstone Nuclear Power Station, Unit No. 2 Proposed Revision to Technical Specifications One-Time Only A.C. Sources Allowed Outage Time Extension Retyped Version of Current Technical Specifications "

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November 1995

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a. Two physically independent circuits between the offsite trans-mission network and the switchyard, and
b. Two separate and independent diesel generators each with a separate fuel oil supply tank containing a minimum of 12,000 i gallons of fuel.

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

ACTION:

a. With one offsite circuit inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. If either diesel generator has not been successfully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstrate its J OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.2 separately for each such diesel generator within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Restore the offsite circuit to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ** l

. 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 />.

b. With one diesel generator inoperable, demonstrate the OPERABILITY of the A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the diesel generator became inoperable due to any cause other than preplanned preventative maintenance or testing,

) demonstrate the OPERABILITY of the remaining 0PERABLE diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.2 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> *; restore the diesel generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least H0T 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 />.

  • This test is required to be completed regardless of when the inoperable diesel generator is restored to an OPERABLE status.
    • Except that once during the Millstone Unit No.1 Cycle 15 Refueling Outage, this 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> Allowed Outage Time can be extended to 7 days.

MILLSTONE - UNIT 2 3/4 8-1 Amendment No. M . 177, 0221

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