ML20198H247
| ML20198H247 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 08/26/1997 |
| From: | Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML20046D759 | List: |
| References | |
| NUDOCS 9709170097 | |
| Download: ML20198H247 (5) | |
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Document Control' Dock LR-N97528
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t REVISED TECHNICAL SPECIFICATION BASES PAGES FOR HOPE CREEK _
TECHNICAL ~ SPECIFICATION AMENDMENT NO. 101-1 Page 1 of 1 9709170097 970826 PDR ADOCK 05000354 P
3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1.1. 3/4 p.2 and 3/4.B.3-A.C. SOURCES.
D.C.
SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C.
and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for (1) the safe shutdown of the facility and (2) the mitigation and control of accident conditions within the facility.
The minimum specified independent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A"
to 10 CFR 50.
The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation.
The OPERABILITY of the power sources are consistent with the initial condition assumptions of the safety analyses and are based upon maintaining at least one-of the onsite A.C. and the corresponding D.C. power sources and associated distribution systems j
OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. or D.C. source.
The A.C. and D.C. source allowable out-of-service times are based on Regulatory Guide 1.93, " Availability of Electrical Power Sources", December 1974 as modified by plant specific analysis and diesel generator manufacturer recommendations.
When two diesel generators arc inoperable, there is an additional ACTION requirement to verify that all required systems, subsystems, trains, components and devices, that depend on the remaining OPERABLE diesel generators as a source of emergency power, are also OPERABLE.
This requirement is intended to provide assurance that a loss of offsite power event will not result in a complete loss of safety function of critical systems during the period two or more of the diesel generators are inoperable.
The term verify as used in this context means to administratively check by examining logs or other information to determina if certain components are out-of-service for maintenance or other reasons.
It does not mean to perform the surveillance requirements needed to demonstrate the OPERABILITY of the component. The 14 day AOT for the "C" and "D" EDGs is based upon the following conditions being met:
1.
Hope Creek should verify through Technical Specifications, procedures or detailed analyses that the systems, subsystems, trains, components and devices that are required to mitigate the consequences of an accident
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are available and operable before removing an EDG for extended preventative maintenance (PM).
In addition, positive measures should be provided to preclude subsequent testing or maintenance activities on these systems, subsystems, trains, components and devices while the EDO is inoperable.
HOPE CREEK B 3/4 8-1 Amendment No. 101
3/4.8 ELECTRICAL POWER SYSTEMS BASES *(Cont nued) 2.
The overall unavailability of the EDG should not exceed the performance criteria developed for implementation of 10CFR50.65 requirements as described in NUMARC 93-01, " Industry Guideline for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants", as endorsed by Regulatory Guide 1.160, " Monitoring the Effectiveness of Maintenance at Nuclear Power Plants", June 1993.
3.
When the "C" or "D" EDG is removed from service for an extended 14 day AOT, any two of the remaining EDGs must be capable, operable and available to mitigate the consequences of a LOOP condition.
The removal from service of safety systems and important non-safety 4.
equipment, including offsite power sources, should be minimized during the extended 14 day AOT.
l 5.
Entry into this LCO should not be abused by repeated voluntary entry into and exit from the LCO.
The primary intent of the extended EDG AOT is that the extended EDG AOT from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days may be needed to perform preplanned EDO maintenance such as teardowns and modifications that would otherwise extend beyond the original 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> AOT.
l 6,
Any component testing or maintenance that increases the likelihood of a plant transient should be avoided.
Plant operation should be stable during the extended 14 day AOT.
7 Voluntary entry into this LCO action statement should not be acheduled if adverse weather conditions are expected.
The OPERABILITY of the minimum specified A.C. and D.C.
power sources and associated distribution systems during shutdown and refueling ensures that (1) the facility can be maintained in the shutdown or refueling condition for extended time periods and (2) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.
For proper operation of the standby EDGs, it is necessary to ensure the proper quality of the fuel oil.
USNRC Regulatory Guide 1.137 addresses the recommended fuel oil practices as supplemented by ANSI N195-1976.
The fuel oil properties governed by these surveillance requirements are the water and sedicent content, the kinematic viscosity, specific gravity (or API gravity) and impurity level.
The initial conditions of Design Basis Accident (DBA) and transient analyses in the UFSAR, Chapter 6 and Chapter 15, assume Engineered Safety Feature (ESP) systems are operable. The EDGs are designed to provide sufficient capacity, capability, redundancy and reliability to ensure the availability of necessary power to ESF systems so that fuel, reactor coolant system and containment design limits are not exceeded.
HOPE CREEK B 3/4 8-la Amendment No. 101
3/4.8 ELECTRICAL POWER SYSTE,MS j
BASES '(continued) a Stored diesel fuel oil is required to have sufficient supply for 7 dayr.
cf full load operation.
It is also required to meet specific standards for 4
quality. Additionally, sufficient lube oil supply must be available to ensure the capability to operato at full load for 7 days.
This requirement, in conjunctfon with an ability to obtain replacement supplies within 7 days, papports the availability of EDGs required to shut down the reactor and to maintain it in a safe condition for an anticipated operational occurrence (AOO) or a postulated DBA with loss of offsite power.
EDG day tank fuel oil requirements, as well as trancter capability from the storage tanks to the day tank, are addressed in LCO 3.8.1, "AC Sources - Operating", and LCO 3.8.2, "AC Sources - Shutdown."
i The AC sources (LCO 3.8.1 and LCO 3.8.2) are required to ensure the availability of the required power to shut down the reactor and maintain it in a safe shutdown condition after an ADO or a postulated DBA, Because stored diesel supports LCO 3.8.1 and LCO 3.8.2, the stored diesel fuel oil is required to be within limits when the associated EDG is required to be
{
For specification 6.8.4.e, the tests listed are a means of determining whether new fuel oil is of the appropriate grade and has not been contaminated 3
with substances that would have an immediate detrimental impact on diesel j
engine combustion.
If results from these tests are within acceptable limits, the 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.
The tests, limits and applicable ASTM standards are as Collows:
Sample the new fuel oil in accordance with ASTM D4057-81; a.
b.
Verify in accordance with the tests specified in ASTM D975, that the sample has an absolute specific gravity at 60/60' F of a 0.83 and s 0.89 or an API gravity at 60'F of a 27 and s 39, a kinematic viscosity of 40*C of a 1.9 centistokes and s 4.1 centistokes, and a flash point of e 125'F and c.
Verify that the new fuel oil bulk water and sediment are within limits for ASTM 2 D fuel oil.
Failure to meet any of the above limits is cause for rejecting the new fuel oil, but does not represent failure to meet the LCO concern since the fuel oil is not added to the storage tanks.
Within 31 days following the initial new fuel oil sample, the new fuel oil is analyzed to establish that the other properties specified in Table 1 of ASTM D975-94 are met for the new fuel oil when tested in accordance with ASTM D975-94, except that the analysis for sulfur may performed in accordance with ASTM D1552-64.
The 31 day period is acceptable because the fuel oil properties of interest, even if they were not within stated limits, would not have an immediate effect on EDG operation.
This surveillance ensures the availability of high quality fuel oil fot the EDGs.
HOPE CREEK B 3/4 8-lb Amendment No. 101 l
l 3/4.8 ELECTRICAL POWEP SYSTEMS BASE 9 'fcontinued)
Fuel oil degradation during long term storage shows up as an increase in particulate, mostly due to oxidation.
The presence of particulate does not mean that the fuel oil will no; burn properly in a diesel engine.
- However, the particulate can cause fouling of filters and fuel oil injection equipment, which can cause engine failure.
Particulate concentration should be determined in accordance with ASTM D2276.*4, Method A.
This method involves a gravimetric determination of total particulate concentration in the fuel oil and has a limit of 10 mg/1.
The 0.8 micron filters specified in ASTM D2276-94 may be replaced with membrane filters up to 3.0 microns, This is acceptable since the closest tolerance fuel filter in the HC EDGs is a five micron particle retention _ duplex filter on the engine driven fuel oil pump.
It is acceptable to obtain a field sample for subsequent laboratory testing in lieu of field testing.
The total volume of stored fuel oil contained in two or more interconnected tanks must be considered and tested separately.
The frequency of this test takes into consideration fuel oil degradation trends that indicate the particulate concentration is unlikely to change significantly between frequency intervals.
The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations for Regulatory Guide 1.9, " Sol >ction of Diesel Generator Set Capacity for Standby Power Supplies", March 10, 1971, Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants", Revision 1, August 1977 and Regulatory Guide 1.137 " Fuel-Oil Systems for Standby Diesel Generators", Revision 1, October 1979 as modified by plant specific analysis, diesel generator manufacturer's recommendations, and Amendment 59, to the Facility Operating License, issued November 22, 1993.
HOPE CREEK B 3/4 Balc Amendment No. 101 l
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