ML18139B997

Proposed Tech Specs 4.6-2 & Tables 3.7-2,3.7-4 & 4.1-1 Re Degraded Voltage Protection Sys

ML18139B997
Person / Time
Site:	Surry
Issue date:	08/17/1982
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18139B996	List: ML18139B995 ML18139B997
References
NUDOCS 8208230284
Download: ML18139B997 (4)

Text

"D"DCD OPJ

oo co TABLE 3.7-2

]>PJ OtJ 00 ENGINEERED SAFEGUARDS ACTION OPJ

,:I INSTRUMENT OPERATING CONDITIONS 0

UICD g~, 1 2 3 4 om "D(IJt,,6 000"""1 OPERATOR ACTION

oo IF CONDITIONS OF DEGREE COLUMN 1 OR 2 MIN. OF EXCEPT AS CONDI-OPERABLE REDUN- PERMISSIBLE BYPASS TIONED BY COLUMN 3 FUNCTIONAL UNIT CHANNELS DANCY CONDITIONS CANNOT BE MET

d. Station Blackout Start Motor Driven Pump 2 0 Restore inoperable channel within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in hot shutdown within next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the follow-ing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

e. Trip of Main Feedwater 1/Pump 1/Pump Restore inoperable Pumps channel within 48 Start Motor Pumps hours or be in hot shutdown within next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the follow-ing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

e

4. LOSS OF POWER 1-i

a. 4.16 KV Emergency 2/Bus 1/Bus Place inoperable channel Cl)

Bus Undervoltage in tripped condition within .

l,.)

(Loss of Voltage). one hour. -...J

.....I 0-,

b. 4.16 KV Emergency 2/Bus 1/Bus Place inoperable channel Bus Undervoltage in tripped condition within (Grid Degraded Voltage) one hour.

TABLE 3.7-4 ENGINEERED SAFETY FEATURE SYSTEM INITIATION LIMITS INSTRUMENT SETTING FUNCTIONAL UNIT CHANNEL ACTION SETTING LIMIT NO.

6. AUXILIARY FEEDWATER

a. Steam Generator Water Level Low-Low Aux. Feedwater Initiation ~5% narrow range S/G Blowdown Isolation

b. RCP Undervoltage Aux. Feedwater Initiation ~ 70% nominal c.

d.

e.

Safety Injection Station Blackout Main Feedwater Pump Trip Aux. Feedwater Initiation Aux. Feedwater Initiation Aux. Feedwater Initiation All S. I. setpoints

> 46. 7% nominal N.A.

7. LOSS OF POWER

+l.,

I\ a. 4.16 KV Emergency Bus Emergency Bus 75_ % volts with a 1

Undervoltage Seperation and

• (Loss of Voltage) Diesel start 2+5,-0.l second time delay

b. 4.16 KV Emergency Bus Undervoltage Emergency Bus Seperation and 90~\:g% volts with.

(Degraded Voltage) Diesel start 60+3.0 second time delay (Non CLS, Non SI) 7+.35 second time delay (CLS or SI Conditions)

TABLE 4.1-1 (Continued)

CHANNEL DESCRIPTION CHECK CALIBRATE TEST REMARKS

35. LOSS OF POWER

a. 4.16 KV Emergency Bus N.A. R M undervoltage (Loss of voltage)

h. 4.16 KV Emergency Bus N.A. R M undervoltage (Degraded voltage) 91 I

\0

, , - - - -- - ~ - - - _._ ___ -

TS 4.6-2

.. ) .

b. Automatic start of each diesel generator, load shedding, and restoration to operation of particular vital equipment, initiated by a simulated loss of off-site power together with a simulated safety injection signal. Testing will also demonstrate that the loss of voltage and degraded voltage protection is defeated whenever the emergency diesel is the sole source of power

_/

to an emergency bus and that this protection is automatically reinstated when the diesel output breaker is opened. This test will be conducted during reactor shutdown for refueling to assure that the diesel generator will start wi"thin 10 sec and assume load in less than 30 sec after the engine starting signal.

c. Availability of the fuel oil-transfer system shall be verified by operating the system in conjunction with the monthly test.

d. Each diesel~generator shall be given a thorough inspection during each refueling interval utilizing the manufacturer's recommenda-tions for this class of stand-by service.

2. Acceptance Criteria The above tests will be considered satisfactory if all applicable equipment operates as designed.

B. Fuel Oil Storage Tanks for Diesel Generators

1. A minimum fuel oil storage of 35,000 gal shall be maintained on-site to assure full power operation of one diesel generator for seven days.