ML20135A449
| ML20135A449 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 11/25/1996 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20135A387 | List: |
| References | |
| NUDOCS 9612030226 | |
| Download: ML20135A449 (5) | |
Text
- _...- -.
ELICTRICAL POWER SYSTEMS
' SURVEILLANCE RE0VIREMENTS (Continued) b.
By removing accumulated water:
1)
From the day tank at least once per 31 days and after each occa-sion when the diesel is operated for greater than I hour, and 2)
From the storage tank'at least once per 31 days.
By sampling new fuel oil in accordance with ASTM D4057-81 prior to
{
c.
addition to the storage tanks and:
1)
By verifying in accordance with the tests specified in ASTM D975-81 prior to addition to the storage tanks that the sample has:
a)
An API Gravity of within 0.3 degrees at 60*F or a specific gravity of within 0.0016 at 60/60*F, when compared to the i
supplier's certificate or an absolute specific gravity i
at 60/60*F of greater than or equal to 0.83 but less than or 1
equal to 0.89 or an API gravity at 60*F of greater than or equal to 27 degrees but less than or equal to 39 degrees.
b)
A kinematic viscosity at 40'C of greater than or equal to 1.9 centistokes, but less than or equal to 4.1 contistokes, if gravity was not determined by comparison with the supplier's certification.
j i
l c)
A flash point equal to or greater than 125'F and d)
A clear and bright appearance with proper color when tested in accordance with ASTM D4176-82.
2) 8y verifying within 31 days of obtaining the sample that the other properties specified in Table 1 of ASTM D975-81 are met when tested in accordance with ASTM D975-81 except that the analysis for sulfur may be performed in accordance with,,
ASTM D1552-79 or ASTM D2622-82.
d.
At least once every 31 days by obtaining a sample of fuel oil from the storage tanks in accordance with AS'N D2276-78, and verifying that total particulate contamination is less than 10 mg/ liter when checked in accordance with ASTM D2276-78, Method A, except that the filters specified in ASTM D2276-78, Sections 5.1.6 and 5.1.7, may have a nominal pore size of up to three (3) microns.
l e.
At the following frequency by:
i l
1.
Every 18 months subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service.
2.
Every verify the diesel generetor capab ect a load of greater 1 to that ump Motor (992 Kw) for each diesel generator in voltage at 4285 2 420 i
/
volts and freque
. 2 hz and a tate conditions I i
SeelNSERT'A l
are r age is maintained at 4280 120 vol s.
i LIMERICK - UNIT 1 3/4 8-4
!=d-at No. 32, 7!,101 9612030226 961125 Q2IE PDR ADOCK 05000352 P
s ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES. D.C. SOURCES. and ONSITE POWER DISTRIBUTION SYSTEMS (Continued)
" Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977 except for paragraphs C.2.a(3), C.2.c(1), C.2.c(2), C.2.d(3) and C.2.d(4), and the periodic testing will be perfomed at least once per 24 months. The exceptions to Regulatory Guide 1.108 allow for gradual loading of diesel generators during testing and decreased surveillance test frequencies (in response to Generic Letter 84-15).
The surveillance requirements for demonstrating the OPERABILITY of the units batteries are in accordance with the recommendations of Regulatory Guide i
1.129 " Maintenance Testing and Replacement of Large Lead Storage Batteries for l
Nuclear Power Plants," February 1978 and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations," except that certain tests will be performed at least once every 24 months.
l l
Verifying average electrolyte temperature above the minimum for which the l
battery was sized, total battery teminal voltage on float charge, connection l
resistance values and the performance of battery service and discharge tests l
ensures the effectiveness of the charging system, the ability to handle high l
discharge rates and compares the battery capacity at that time with the rated l
capacity.
l i
Table 4.8.2.11 specifies the normal limits for each designated pilot I
cell and each connected cell for electrolyte level, float voltage and specific gravity. The limits for the designated pilot cells float voltage and specific i
gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low i
value, is characteristic of a charged cell with adequate capacity. The normal j
limits for each connected cell for float voltage and specific gravity, greater l
than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific gravity with an average specific gravity of all the connected cells I
not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.
l l
Operation with a battery cell's parameter outside the normal limit but l
within the allowable value specified in Table 4.8.2.1-1 is permitted for up to i
7 days. During this 7-day period:
(1) the allowable value for electrolyte level ensures no physical damage to the plates with an adequate electron i
transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's recommended full charge specific gravity ensures that the decrease in rating will be less than the safety margin provided in sizing; (3) the allowable value for an individual cell's specific gravity, ensures that an individual cell's specific gravity will not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual i
cell's float voltage, greater than 2.07 volts, ensures the battery's capa-bility to perform its design function.
l l
LIMERICK - UNIT 1 B 3/4 8-2 Amendment No. 40. 71 corrected by letter dated June 19, 1995
. ~ - -
ILECTRICAL POWER SYSTEMS'-
- SURVEILLANCE REOUIREMENTS (Continued)
^
~
b.
By removing accumulated water:
1)
From the day tank at least once per 31 days and after each occa-sion when the diesel is operated for greater than I hour, and 2)
From the storage tank at least once per 31 days.
c.
By sampling new fuel oil in accordance with ASTM D4057-81 prior to addition to the storage tanks and:
1)
By verifying in accordance with the tests specified in ASTM D975-81 prior to addition to the storage tanks that the sample has:
a)
An API Gravity of within 0.3 degrees at 60*F or a specific gravity of within 0.0016 at 60/60*F, when compared to the l
supplier's certificate or an absolute specific gravity at 60/60'F of greater than or equal to 0.83 but less than or l
equal to 0.89 or an API gravity at 60*F of greater than or equal to 27 degrees but less than or equal to 39 degrees.
b)
A kinematic viscosity at 40*C of greater than or equal to 1.9 centistokes, but less than or equal to 4.1 centistokes, if gravity was not determined by comparison with the supplier's certification.
l c)
A flash point equal to or greater than 125*F, and d)
A clear and bright appearance with proper color when i
tested in accordance with ASTM D4176-82.
l l
2)
By verifying within 31 days of obtaining the sample that the other properties specified in Table 1 of ASTM D975-81 are met l
when tested in accordance with ASTM D975-81 except that the analysis for sulfur may be performed in accordance with ASTM D1552-79 or ASTM D2622-82.
d.
At least once every 31 days by obtaining a sample of fuel oil from the storage tanks in accordance with ASTM D2276-78, and verifying i
that total particulate contamination is less than 10 mg/ liter when checked in accordance with ASTM D2276-78, Method A, except that the filters specified in ASTM D2276-78, Sections 5.1.6 and 5.1.7, may have a nominal pore size of up to three (3) microns.
e.
At the following frequency by:
1.
Every 18 months subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service.
2.
ths verifying the diesel generator capab ct a load of gre equal to that ump Motor (992 kW) for each diesel genera aining voltage at 4285 m See INSERT 'A' j 420 volts and f 2 1.2 Hz an d state l
con reached, voltage is maintained at 4280 SEP 21 1995 LIMERICK - UNIT 2 3/4 8-4 Anendment No. 34, 65 1
i.
J'
- ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES. D.C. SOURCES. and ONSITE POWER DISTRIBUTION SYSTEMS (Continued)
Supplies, " March 10, 1971, Regulatory Guide 1.137 " Fuel-Oil Systems for Standby Diesel Generators," Revision 1, October 1979 and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977 except for paragraphs C.2.a(3), C.2.c(1),
C.2.c(2), C.2.d(3) and C.2.d(4), and the periodic testing will be performed at least once per 24 months. The exceptions to Regulatory Guide 1.108 allow for gradual loading of diesel generators during testing and decreased surveillance test frequencies (in response to Generic Letter 84-15).
See INSEFIT *B' The surveillance requirements for demonstrating the OPERABILITY of the units batteries are in accordance with the recommendations of Regulatory Guide 1.129 " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978 and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations," except that certain tests will be performed at least once every 24 months.
Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltage on float charge, connection resistance values and the performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.
Table 4.8.2.1-1 specifies the normal limits for each designated pilot cell and each connected cell for electrolyte level, float voltage and specific gravity. The limits for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity. The normal limits for each connected cell for float voltage and specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific gravity with an average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.
Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8.2.1-1 is permitted for up to 7 days. During this 7-day period:
(1) the allowable value for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's recommended full charge specific gravity ensures that the decrease in rating will be less than i
the safety margin provided in sizing; (3) the allowable value for an individual l
cell's specific gravity, ensures that an individual cell's specific gravity
)
will not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 volts, ensures the battery's capa-bility to perform its design function.
LIMERICK - UNIT 2 B 3/4 8-2 Amendment No. 34 corrected by letter dated June 19, 1995
- - - _ - _.. = _...
l REVISED TECHNICAL SPECIFICATIONS l
WORDING FOR TSCR 96-22-0 l
l lNSERT "A" (into Technical Specifications Section 4.8.1.1.2.e.2) 1 "Every 24 months verify each diesel generator's capability to reject a load of greater than or equal to that of its single largest post-accident load while maintaining voltage at 42851420 volts and frequency at 60 i 1.2 hz and l
after steady state conditions are reached, voltage is maintained at 4280 i 120 volts."
l INSERT "B" (into Technical Specifications Bases 3/4.8, " Electrical Power Systems")
"The single largest post-accident load on each diesel generator is the RHR pump."
l l
t
.