ML20204J129

From kanterella
Jump to navigation Jump to search
Proposed Tech Specs Bases Pages B 3/4 8-1,B 3/4 8-1a, B 3/4 8-1b,B 3/4 8-1c & B 3/4 8-1d,correcting Editorial Errors That Occurred During Implementation of Hope Creek License Amends 100 & 101
ML20204J129
Person / Time
Site: Hope Creek PSEG icon.png
Issue date: 03/22/1999
From:
Public Service Enterprise Group
To:
Shared Package
ML20204J122 List:
References
NUDOCS 9903300008
Download: ML20204J129 (6)


Text

.

I i

g I

Attachment Revised Bases Pages

'~

9903300008 990322 PDR ADOCK 0500035a P

PDR

c 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1, 3/4.8.2 and 3/4.8.3 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 tmon vaintainio; at least one of the onsite I..C.

an. the correspc m '.,g C.

power soutees and associated distribution systems OPERABi,

u ring accident concli.

ns coincident with an assumed loss of

.fsite power and single failure of the other onsite A.C. or D..C.

source.

The A.C.

and D.C.

source allowable out sf-service times are based on Regulatory Guide 1.93, " Availability of Electrical Power 1ources", December 1974 as modified by plant specific analysis and diesel generator manufacturer recommendations.

When two diesel generators are 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 determine 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:

HOPE CREEK B 3/4 8-1 Amendment No. 101

c.;

3/4.8 ELECTRICAL POWER SYSTEMS BASES. * (Continued) i

'.1.

Hope Creek should verify through Technical Specifications, j

procedures or detailed analyses that the systems, i

subsystems, trains,. components andfdevices that are required to mitigate the consequences of an accident 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, j

trains, components and devices while the EDG is inoperable.

2.

The overall unavailability of the EDG should not exceed the performance criteria developed for implementation of 110CFR50.65 requirements'as described in NUMARC 93-01,

" Industry Guideline for Monitoring the Effectiveness of j

. Maintenance at Nuclear Power Plants", as endorsed by Regulatory Guide 1.160, " Monitoring the Effectiveness of Maintenance at Nuclear Power Plants", June 1993.

j 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.

4.

The removal from service of safety systems and important non-safety equipment, including offsite power sources, ld be minimized duringLthe extended 14 day AOT.

v 5.

atry into this LCO should not be abused by repeated ie,luntary entry into and exit from the LCO.

The primary inten. of the extended EDG AOT is that the extended EDG AOT from 72 hcars to 14 days'may be needed to perform preplanned EDG 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.

]

6.

Any component testing or maintenance that increases the likelihood of a plant transient should be avoided.

Plant i

operation should be stable during the extended 14 day AOT.

i 7.

Voluntary entry into this LCO action statement should not be scheduled if adverse weather conditions are expected.

HOPE CREEK B 3/4 8-la Amendment No. 101 L

E 4

3 L3/4.8 ELECTRICAL POWER SYSTEMS BASES- (Continued)

. For' proper operation of the standby EDGs' it is'necessary to ensureLthe proper quality of the fuel oil.

USNRC Regulatory-Guide-1.1371 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 sediment content,-thefkinematic 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 (ESF) 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.

. Stored diesel fuel oil is required to have sufficient supply for 7 days of full load operation..It is alca required to meet specific standards for quality.

. Additionally, sufficient lube cil supply must be available to ensure the capability to operate--

at' full load for 7 days.

This~ req irement, in conjunction with an' ability to obtain replacement supplies within 7 days, supports 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.

EDGLday tank fuel oil requirements, as well as transfer 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."

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 AOO 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 operable.

HOPE CREEK B 3/4 8-lb Amendment No. 100 I

l i

i)

E

.r.

T,'t.8 ELECTRICAL POWER SYSTEMS, BASES '(Continued)-

l

'For' specification 6;.8.4.e, the tests listed are a means of determining whether new fuel oil is of the appropriate grade and hasinot 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 fuel

{

oil may_be~added to the storage tanks without concern for

-contaminating the entire volume of fuel =oi) in the storage tanks.

These teststare.to be conducted prior to adding the new fuel to the storage tanks.

The-tests, limits. aid applicable. ASTM standards are'as follows:

4 a.

Sample the new fuel' oil in accordance with ASTM D4057-81; I

b.

Verify in accordance with ;he tests specified in ASTM D975, that the sample has an absolute specific gravity at 60/60 F of 2 0.83 and 5 0.89 or an API gravity at 60 F of 2 27 and s 39, a kineme. tic viscosity of.40 C of 21.9 centistokes and 5 v.3 centistokes, and a flash point of 2 125*F; and

)

c.

Verify that the new fuel oil bulk water and sediment are Lwithin 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 a failure to meet the

. LCO concern since the fuel oil is not added to the storage tanks.

i Within 31 days following the initial new fuel oil sample, the 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 j

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

.i limits, would not have immediate effect on EDG operation.

-l This surveillance enra es the availability of high' quality fuel oil for the'EDGs.

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 not burn l

properly in a diesel engine.

However, the particulate can cause fouling.of filters and fuel oil injection equipment, which can cause' engine failure.

HOPE CREEK B 3/4 8-1c Amendment No. 100

3/4.8 ELECTRICAL POWER SYSTEMS BASES '(Continued)

Particulate concentration should be determined in accordance with ASTM D2276-94, Method A.

This method involves a gravimetric i

determination of total particulate concentration in the fuel oil l

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 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.

The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations for Regulatory Guide 1.9,

" Selection of Diesel Generator Set Capacity for Standby Power Supplies", March 10, 1971, Regulatory Suide 1.108, " Periodic Testing of Diesel Generator Units U.ied 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 8-1d Ame: dment No. 100 1