ML20134P863
| ML20134P863 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/14/1997 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20134P306 | List: |
| References | |
| NUDOCS 9702260149 | |
| Download: ML20134P863 (2) | |
Text
. _
. 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:
J a.
Two physically independent circuits between the offsite transmission i
network and the onsite Class IE distribution system, and b.
Four separate and independent diesel generator sets each with:
1 1.
Two diesels driving a common generator 2.
Two engine-mounted fuel tanks containing a minimum volume of 250 gallons of fuel, per tank A. separate fuel storage system containing a minimum volume cf 62,000 gallons of: fuel, i
j 4.
A separate fuel transfer pump, and 5.
A separate 125-volt D.CJ distribution panel,125-volt D.C.
battery bank and associated charger.
APPLICABILITY: MODES 1,;2, 3 and 4.
, GJTLE:
a.
With one offsite' A.C. circuit of the above required A.C. electrical R209 g
power sources inoperable, demonstrate the OPERABILITY of the remain-g ing offsite A.C. circuit by performing Surveillance Requirement 4.8.1.1.1.a within one 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.
yM Restore at least two offsite circuits 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
@, tp 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 />.
' 9 R209 l
b.# With diesel generator set (s) 1A-A and/or 2A-A or 1B-B and/or 2B-B of kg F the above required A.C. electrical power sources inoperable, demon-bt 1
strate the OPERABILITY of the remaining A.C. sources by performing f
Surveillance Requirement 4.8.1.1.1.a within one hour and at least b
once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter, and determining OPERABLE diesel genera-R209 NQ tor sets are not inoperable due to common cause failure or performing 9
Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; restore at
') % l.s least four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />
- gi41 Dr 9
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 />.
- The 72-hour action statement may be extended for an additional 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> for tw
the performance of Surveillance Requirement 4.8.1.1.2.f.l.
A temporary fuel supply must be connected to the diesel generator set that is having the 1
associated fuel tanks cleaned.
- Required actions, to verify OPERABLE diesel generator sets are not inoperable R209
- k 5
due to common cause failure or perform SR 4.8.1.1.2.a.4, :ihall be completed if this action is entered.
W 9702260149 970214 June 29, 1995 ADOCK 0500 7
Amendment No. 100, 132, 137,
[SEQUOYAH-UNIT 1
{DR
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 transmission network and the onsite Class IE distribution system, and b.
Four separate and independent diesel generator sets each with:
1.
Two diesels driving a common generator 2.
Two engine-mounted fuel tanks containing a minimum volume of 250 gallons of fuel, per tank 3.
A separate fuel storage system containing a minimum volume of 62,000 gallons of fuel, 4.
A separate fuel transfer pump, and 5.
A separate 125-volt D.C. distribution panel,125-volt D.C.
battery bank and associated charger.
APPLICABILITY: MODES 1, 2, 3 and 4.
ACTION:
R195 e
S a.
With one offsite A.C. circuit of the above required A.C. electrical kD power sources inoperable, demonstrate the OPERABILITY of the remain-Q&
ing offsite A.C. circuit by performing Surveillance Requirement 4.8.1.1.1.a within one 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, k
Restore at least two offsite circuits 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 s
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 />.
R195 K 34
{
3 b.# With diesel generator set (s) 1A-A and/or 2A-A or IB-B and/or 28-B of l
g{
the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by 9
performing Surveillance Requirement 4.8.1.1.1.a within one hour and R195 4
R 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 determining OPERABLE diesel k'
generator sets are not inoperable due to common cause failure or performing Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; y
restore at least four diesel generator sets to OPERABLE status within ik 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 R123 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 />.
{4E
-a b *The 72-hour action statement may be extended for an additional 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> for i3
\\ one train of diesel generators (either IA-A and 2A-A, or IB-B and 28-B) during W
the performance of Surveillance Requirement 4.8.1.1.2.f.1.
A temporary fuel supply must be connected to the diesel generator set that is having the
.N(
R195 associated fuel tanks cleaned.
- Required actions, to verify 0PERABLE diesel generator sets are not inoperable k
0-due to common cause failure or perform SR 4.8.1.1.2.a.4, shall be completed if this action is entered.
June 29, 1995 I
SEQUOYAH - UNIT 2 3/4 8-1 Amendment No. 89, 119, 123, 195 f