ML20104A869

Proposed TS 3.9 & 4.9 Re Auxiliary Electrical Sys

ML20104A869
Person / Time
Site:	Cooper
Issue date:	09/02/1992
From:	NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20104A865	List: ML20104A863 ML20104A869
References
NUDOCS 9209140200
Download: ML20104A869 (2)

Text

___ _ _ _ _ _ _ _ _ -

LIfi1 TING CONDITIONS FOR OPERAT102 S,URVEILIANCE REOUIREMENTS 3.9 AUXILIARY ELECTRICAL SYSTEM 4.9 MEILI ARY ELECTRICAL SYSTFM Applicability:

Applic ab.1L11y:

Applies to the auxiliary electrical Applies to the periodic testing power system, requirements of the auxiliary electrical systems.

Obiective:

Obiective:

To assure an adequate supply of Verify the operability of the electrical power for operation of auxiliary electrical system.

those systems required for sefety.

Epecification:

Specification:

A.-

Auxiliary Electrical Eaulement A.

Auxiliary Electrica] Eautoment 1.

The reactor shall not be made 1.

Emergency Buses Undervoltage Relays critical from a

Cold Shutdown Condition unless all of the a.

Loss of voltage relays following conditions are satisfied:

Once every 18 months, loss of a.

Both off site sources (345 KV and voltage on emergency buses is 69 PV) and the startup transformer simulated to demonstrate the and emergency transformer are load shedding from emergency available and capable of buses and the automatic start automatically supplying power to the of diesel generators.

4160 Volt emergency buses IF and 1G.

b.

Undervoltage relays b.

Both diesel generators shall be operable and there shall be a once every 18 months, low

\\

minimum of 48,000 gal, of diesel voltage on emergency buses is fuel in the fuel oil storage tanks, simulated to demonstrate disconnection of the emergency c.

The 4160V critical buses IF and 1G buses from the offsite power and the 480V critical buses IP and source.

Tne

>, der-voltage 1G are energized, relays shall be calibrated once every 18 months.

1.

The loss of voltage relays and their auxiliary relays 2.

Diesel Generators are operable.

a.

Each diesel-generator shall be 2.

The underveltage relays and storted manually and loaded to their auxiliary relays are not less than 50% of rated 2

operable.

load for no less than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> once each month to demonstrate d.

The fcur unit 125V/250V batteries operational readiness, and their chargers shall be operable.

The power monitoring system for the e.

inservice RFS MG set or alternate source shall be operable.

9209140200 920902 PDR ADOCK 05000297 P

paa

_193

LIMITING CONDITIONS FOR OPERAUON SURVEILIANCE REQUIREMENTS 3.9.A 4.9.A.2 (cont'd)

During. the anonthly generator test the diesel generator starting air compressor shall be checked for operation and its ability to recharge air receivers.

The operation of the diesel fuel oil transfer pumps and fuel oil day tank level switches shall be

' demonstrated, and the diesel starting time to reach rated voltage and frequency shall be logged.

b.

Once every 18 months the condition under which the diesel generator is required will be simulated and a test conducted to demonstrate that i

it will start and accept the emergency load within the specified' time sequence. The results shall be logged.

c.

Specification 4.9.A.2.c deleted, d.

Once a Inonth the quantity of diesel fuel available shall be logged, e.

Every three months and upon delivery a sample of diesel-fuel shall be -

checked for quality and the 'results

. logged. The quality shall be within the acceptable limits specified in Table

.1 of ASTM D975-1989a for Nos. 1D or 2D: for those fuel oil properties directly related to engine performance.

f.

At least once per 18 months, during

shutoown, each diesel generator shall be given an inspection in accordance with instructions based on

.the manufacturer's recommendations.

-3.

125 VDC Unit' Batteries 1

~a.-

Every week, the following parameters -

shall be verified.

The actual values shall be measured.and logged:

1.

.The total -battery terminal voltage' on float charge is equal to.

or greater than 125 volts.

2.

The electrolyte level of each pilot cell is between the minimum ana' maximum level indication marks, 194-

.