ML032230433

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Amendment No. 249, Technical Specifications, Re. Emergency Diesel Generator Allowable Outage Time
ML032230433
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 08/08/2003
From: Alexion T
NRC/NRR/DLPM/LPD4
To: Anderson C
Entergy Operations
Alexion T W, NRR/DLPM, 415-1326
Shared Package
ML032240055 List:
References
TAC MB6361
Download: ML032230433 (5)
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Text

3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES 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 transmission network and the onsite Class IE distribution system and
b. Two separate and Independent diesel generators each with:
1. A day fuel tank containing a minimum volume of 280 gallons of fuel (equivalent to 50% of indicated tank volume),
2. A separate fuel storage system containing a minimum volume of 22,500 gallons of fuel (equivalent to 100% of indicated tank level),

and

3. A separate fuel transfer pump.

APPLICABILITY: MODES 1, 2,3 and 4.

ACTION:

a. With one offsite A.C. circuit of the above required A.C. electrical power sources Inoperable, perform the following:
1. Demonstrate the OPERABILITY of the remaining offsite A.C. circuit by performing Surveillance Requirement 4.8.1.1.1.a 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
2. Restore the offsite AC. 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 /> 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 />. Startup Transformer No. 2 may be removed from service for up to 30 days as part of a preplanned preventative maintenance schedule. The 30-day allowance may be applied not more than once Ina 10-year period. The provisions of Specification 3.0.4 are not applicable to Startup Transformer No. 2 during the 30-day preventative maintenance period.

AR1<ANSAS - UNIT 2 13/4 8-1 Amendment No. 444,246,234,249

ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES LIMITING CONDITION FOR OPERATION

b. With one diesel generator of the above required A.C. electrical power source inoperable, perform the following:
1. Demonstrate the OPERABILITY of both the offsite A. C. circuits by performing Surveillance Requirement 4.8.1.1.1.a 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
2. Demonstrate the OPERABIUITY of the remaining OPERABLE diesel generator within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by:
i. Determining the OPERABLE diesel generator is not inoperable due to a common cause failure, or ii. Perform Surveillance Requirement 4.8.1.1.2.a.4 unless:
a. The remaining diesel generator Is currently in operation, or
b. The remaining diesel generator has been demonstrated OPERABLE within the previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and
3. Restore the diesel generator to OPERABLE status within 14 days (See Note 1) 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 />.

Note 1 - If the Alternate AC. Diesel Generator (AACDG) Is determined to be inoperable during this period, then a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> restoration period Is applicable until either the AACDG or the diesel generator Is returned to operable status (not to exceed 14 days from the Initial diesel generator Inoperability).

ARKANSAS - UNIT 2 314 8-l1a Amendment No. 249 I

ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES LIMITING CONDITION FOR OPERATION

c. With one offsite A.C. circuit and one diesel generator of the above required A.C. electrical power sources Inoperable, perform the following:
1. Demonstrate the OPERABILITY of the remaining offsite A.C. circuit by performing Surveillance Requirement 4.8.1.1.1.a 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,
2. If the diesel generator became Inoperable due to any cause other than preplanned preventive maintenance or testing, then
i. Demonstrate the OPERABILITY of the remaining OPERABLE diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> except when:
a. The remaining diesel generator Is currently In operation, or
b. The remaining diesel generator has been demonstrated OPERABLE within the previous 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, and
3. Restore at least one of the Inoperable sources to OPERABLE status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-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 />, and
4. Restore the remaining Inoperable A.C. Source to an OPERABLE status (Offsite AC.

Circuit within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or Diesel Generator with 14 days (see b.3, Note 1)) based on the time of the initiating event that caused the inoperability or be Inat 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 />.

d. With two offsite A.C. circuits of the above required A.C. electrical power sources inoperable, perform the following:
1. Perform Surveillance Requirement 4.8.1.1.2.aA on the diesel generators within the next 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> except when:

I. The diesel generators are currently In operation, or iI. The diesel generators have been demonstrated OPERABLE within the previous 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, and

2. Restore one of the Inoperable offsite A.C. circuits 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 />, and
3. Restore both AC. circuits within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> of the Initiating event 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 />. -

ARKANSAS - UNIT 2 3/4 8-2 Amendment No. 441,234, 249

ELECTRICAL POWER SYSTEMS 314.8.1 A.C. SOURCES LIMITING CONDITION FOR OPERATION

e. With two diesel generators of the above required A.C. electrical power sources inoperable, perform the following:
1. Demonstrate the OPERABILITY of the two offsite AC. circuits by performing Surveillance Requirement 4.8.1.1.1.a 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
2. Restore one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be In a 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 />, and
3. Restore the remaining inoperable diesel generator within 14 days (see b.3, Note 1) of the Initiating event 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 />.

ARKANSAS - UNIT 2 314 8-2a Amendment No. 444,234, 249 1

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required Independent circuits between the offste transmission network and the onsite Class I E distribution system shall be:

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and
b. Demonstrated OPERABLE at least once per 18 months during shutdown by transferring (manually and automatically) unit power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE: (Note 1)

a. At least once per 31 days on a STAGGERED TEST BASIS by:
1. Verifying the fuel level Inthe day fuel tank.
2. Verifying the fuel level in the fuel storage tank.
3. Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank.
4. Verifying the diesel starts from a standby condition and accelerates to at least 900 rpm In < 15 seconds. (Note 2?
5. Verifying the generator Is synchronized, loaded to an indicated 2600 to 2850 Kw and operates for 2 60 minutes. (Notes 3 & 4)
6. Verifying the diesel generator Is aligned to provide standby power to the associated emergency busses.
b. At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank obtained Inaccordance with ASTM-D270-65, Is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sediment.

Note 1 All planned diesel generator starts for the purposes of these surveillances may be preceded by prelube procedures.

Note 2 This diesel generator start from a standby condition in < 15 sec. shall be accomplished at least once every 184 days. All other diesel generator starts for this surveillance may be in accordance with vendor recommendations.

Note 3 Diesel generator loading may be accomplished in accordance with vendor recommendations such as gradual loading.

Note 4 Momentary transients outside this load band due to changing loads will not invalidate the test. Load ranges are allowed to preclude over-loading the diesel generators.

ARKANSAS - UNIT 2 314 8-2b Amendment No. 444,23Z, 249 I

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