ML17353A240
| ML17353A240 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 06/19/1995 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17353A239 | List: |
| References | |
| NUDOCS 9506290253 | |
| Download: ML17353A240 (5) | |
Text
ELECTRICAL POWER SYS E
~
SURVEILLANCE RE UIREHENTS Continued 2) shall be maintained within these limits during this test.
Within 5 minutes after completin this 24-hour test,-
~
~
\\
~
~
~
~
~
s 8)
Verifying that the auto-connected loads to each diesel generator do not exceed 2500 kW (Unit 3),
2874 kW (Unit 4);
9)
Verifying the diesel generator's capability to:
a)
Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a
simulated restoration of offsite power, b)
Transfer its loads to the offsite power source, and c)
Be restored to its standby status.
10)
Verifying that the diesel generator operating in a test
- mode, connected to its bus, a simulated Safety Injection signal overrides the test mode by:
(1) returning the diesel generator to standby operation, and (2) automatically energizing the emergency loads with offsite power; I
11)
Verifying that the fuel transfer pump transfers fuel from the fuel storage tank (Unit 3), fuel storage tanks (Unit 4) to the day tanks of each diesel associated with the unit via the installed cross-connection lines; 12)
Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within a 10'f its design interval; 13)
Verifying that the diesel generator lockout relay prevents the diesel generator from starting; h.
At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting all required diesel generators simultaneously and verifying that all required diesel generators provide 60 t 1.2 Hz frequency.and 4160 i 420 volts in less than or equal to 15 seconds; and i.
At least once per 10 years by:
1)
Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank.
For Unit 4 only, performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASHE Code in accordance with Section XI of the ASHE Boiler and Pressure Vessel Code and applicable Addenda.
rQ
""IfSpecification 4.8.1.1.2.g.~ is not satisfactorily completed it is not necessary to repeat the 24-hour test.
- Instead, the diesel gener or may be operated between 2300-2500 kM Unit 3, 2650-2850 kM (Unit 4) for -
hou or until operating temperature has stabilized, TURKEY POINT - UNITS 3 4 4 3/4 8-8 AHENDHENT NOS245 AND 140 95062ggi025'5 950619 PDR ADQCK 05000250 P
~
~
~
~
P j1
~r
ELECTRICAL POMER SYS EMS B S u d Mith both startup transformers inoperable, the unit(s) are required to be shutdown consecutively, after 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
A consecut1ve shutdown is used because a unit w1thout its associated transformer must perform a natural circulation cooldown.
By placing one unit in COLD SNJTDOXN before starting shutdown of the second unit, a dual unit natural circulat1on cooldown is avoided.
The term verify means to administrat1vely check by examining logs or other information to determine if required components are out-of-service for maintenance or other reasons.
It does not meah to perform the surveillance requirements needed to demonstrate the OPERABILITY of the component.
The EDG Surveillance testing requires that each EDG be started from normal conditions only once per 184 days with no additional warmup procedures.
Normal conditions in this instance are defined as the pre-start temperature and lube oil conditions each EDG normally experiences with the continuous use
- Q of prelube systems and itmwrsion heaters.
The fuel supply specified for the Unit 3 EDG's is based on the original criteria and design bases used to 11cense the plant.
The specified fuel supply will ensure sufficient fuel for either EDG associated with Unit 3 for at least a week.
The fuel supply specified for the Unit 4 EDG's is based on the criter1a provided in ANSI NI95-1976 as endorsed by Regulatory Guide 1.137.
The specified fuel supply will ensure sufficient fuel for each EDG associated with Unit 4 for at least a week.
DIESEL FUEL OIL E
ING PROGRAll In accordance with TS 6.8.4, a diesel fuel oil test1ng program to implement required test1ng of both new fuel oil and stored fuel oil shall be established.
For the intent of this specif1cat1on, new fuel oil shall represent diesel fuel oil that has not been added to the Diesel Fuel 011 Storage Tanks.
Once the fuel oil is added to the Diesel Fuel Oil Storage Tanks, the diesel fuel oil is considered stored fuel oil, and shall meet the Technical Specification requirements for stored diesel fuel oil.
The tests listed below are a means of determining whether new fuel oil 1s of the appropriate grade and has not been contaminated with substances that would have an immediate detrimental impact on diesel engine combustion.
If results from these tests are within acceptable limits, the new fuel oil may be added to the storage tanks without concern for contaminating the entire volume of fuel oil in the storage tanks.
These tests are to be conducted prior to adding the new fuel to the storage tanks, but in no case is the t1me between receipt of the new fuel oil and conducting the tests of Surveillance Requirement 4.8.1.1.2e.
to exceed 30 days.
The tests, limits, and applicable ASTN standards being used to evaluate the condition of new fuel oil are:
1.
By obtaining a composite sample of new fuel o11 1n accordance with ASTN-D4057 prior to addition of new fuel oil to the diesel fuel oil storage tanks and:
TURKEY POINT - UNITS 3 K 4 B 3/4 8-4 NENDNENT NOS,169 AND 163
L-95-163 Attachment 3
Insert A verify the diesel starts and accelerates to reach a generator voltage and frequency of 4160
+ 420 volts and 60
+ 1.2 Hz within 15 seconds after the start signal."
Insert B
verification of the diesel's ability to restart and accelerate to a generator voltage and frequency of 4160
+ 420 volts and 60
+
1.2 Hz within 15 seconds following the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> operation test of Insert C
(whichever is greater)
. Following the 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />s/operating temperature stabilization run, the EDG is to be secured and restarted within 5 minutes to confirm its ability to achieve the required voltage and frequency within 15 seconds.
Insert D
Surveillance Requirement 4.8.1.1.2.g.7) demonstrates that the diesel engine can restart from a hot condition, such as subsequent to shutdown from normal surveillances, and achieve the required voltage and frequency within 15 seconds.
The 15 second time is derived from the requirements of the accident analysis to respond to a design large break Loss of Coolant Accident (LOCA).
By performing this SR after 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (or after two hours, in accordance with the proposed revised footnote),
the test is performed with the diesel sufficiently hot.
The load band is provided to avoid routine overloading of the EDG. Routine overloads may result in more frequent teardown inspections in accordance with vendor recommendations in order to maintain EDG OPERABILITY. The requirement that the diesel has operated for at least two hours at full load is based on NRC staff guidance for achieving hot conditions.
Momentary transients due to changing bus loads do not invalidate this test.
0
~
V 4