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 ]>PJ OtJ 00 OPJ ,:I 0 UICD g~, om "D(IJt,,6 000"""1 ;;oo 4. d. e. FUNCTIONAL UNIT Station Blackout Start Motor Driven Pump Trip of Main Feedwater Pumps Start Motor Pumps LOSS OF POWER a. 4.16 KV Emergency Bus Undervoltage (Loss of Voltage).

b. 4.16 KV Emergency Bus Undervoltage (Grid Degraded Voltage) 1 MIN. OPERABLE CHANNELS 2 TABLE 3.7-2 ENGINEERED SAFEGUARDS ACTION INSTRUMENT OPERATING CONDITIONS 2 DEGREE OF 3 REDUN-PERMISSIBLE BYPASS DANCY CONDITIONS 0 1/Pump 1/Pump 2/Bus 1/Bus 2/Bus 1/Bus 4 OPERATOR ACTION IF CONDITIONS OF COLUMN 1 OR 2 EXCEPT AS TIONED BY COLUMN 3 CANNOT BE MET 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 ing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. 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 ing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Place inoperable channel in tripped condition within one hour. Place inoperable channel in tripped condition within one hour.

• e 1-i Cl) l,.) . -...J I ..... 0-,

TABLE 3.7-4 ENGINEERED SAFETY FEATURE SYSTEM INITIATION LIMITS INSTRUMENT SETTING NO. FUNCTIONAL UNIT 6. AUXILIARY FEEDWATER

a. Steam Generator Water Level Low-Low b. RCP Undervoltage

c. Safety Injection

d. Station Blackout e. Main Feedwater Pump Trip 7. LOSS OF POWER I \ a. b. 4.16 KV Emergency Bus Undervoltage

• (Loss of Voltage) 4.16 KV Emergency Bus Undervoltage (Degraded Voltage) CHANNEL ACTION Aux. Feedwater Initiation S/G Blowdown Isolation Aux. Feedwater Aux. Feedwater Aux. Feedwater Aux. Feedwater Emergency Bus Seperation and Diesel start Emergency Bus Seperation and Diesel start Initiation Initiation Initiation Initiation SETTING LIMIT ~5% narrow range 70% nominal All S. I. setpoints

-> 46. 7% nominal N.A. +l., 75_1% volts with a 2+5,-0.l second time delay 90~\:g% volts with. 60+3.0 second time delay (Non CLS, Non SI) 7+.35 second time delay (CLS or SI Conditions)

CHANNEL DESCRIPTION

35. LOSS OF POWER a. 4.16 KV Emergency Bus undervoltage (Loss of voltage) h. 4.16 KV Emergency Bus undervoltage (Degraded voltage) CHECK N.A. N.A. TABLE 4.1-1 (Continued)

CALIBRATE TEST R M R M REMARKS 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 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. _/