ML20046C514

Proposed Tech Specs Requesting to Increase EDG Reliability Availability by Reducing Number of Fast Start Tests

ML20046C514
Person / Time
Site:	Vermont Yankee
Issue date:	08/04/1993
From:	VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20046C507	List: ML20046C506 ML20046C514
References
NUDOCS 9308110093
Download: ML20046C514 (3)

Text

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3.10 Lif1ITIllG C0ffDITIOflS FOR OPERAT10ft 4.10 SURVEILLAfiCE REQUIRE?tEllTS

'@j 3.10 Aux il ia ry_E l e c t ric al_Enwe r_Sy s t,e ms 4.10 ouxiliary _El ect rical_fowe r Sys t erns x0 3 Applicability opplicabil.ity 3> -

OO Applies to the attxlllary electrical power systems. Applies to the periodic testing requirements of yd the auxiliary electrical power systems.

o4 uir.J Objective Objective OO OED my To assure an adequate supply of electrical power for operation of those systems required for To verify the operability of the auxiliary electrical power systems.

reactor safety, f) Specilication Specification A.  !!armaLoperation A. tformaLoveration The reactor shall not be made critical unless 1. Dies _cl Generators all of the following conditions are satisfled.

- Reh-d iesel-gene ro be r-shal-1--he

1. DicSel_.GcnerQLQrs g sta& Lad-and Loaded-onca =anLh Lo a

/ demonstrata-opa mtional-seadinogn Both emergency diesel generators shall The-tent-sha14--eent4nce m t i ! the be operabic and capable of starting and d iese4-e n g4*e-e n4-t he-g ener-a t-o e-o re reaching rated voltage and frequency in a L-equ144hr444se-teenperatet not more than 13 seconds, en pected-ma ulmum-eme rgeney-4en d i n g-m- -not te en ecd the-eent-inuous rat 4ng r---Due4 ng--this--t+9bi --the-Note: All diesel generator starts may be preceded by an diml-staMng-time-twach-ra Led engine prelube and warmup procedures. vo tta g,_-a nd-f-r-e q u en cy-s ha 14-h e-

a. Monthly logged-end-the sii camp. esser str:rH r be-e h ec ked-fo r-o pe ra tion-e nd-i te-

, I a b 144 by-to-reeharge-n+r-reee4 ve re .

1. Each diosci generator sha'l be manually started using the 14 The-diese4-f uel-oi4-benns fer tump*

undervoltage, automatic starting circuit, the speed increased

[ sha44-hehnted 4n-aeeorenea-wi4h-from idle to synchronous and then gradually loaded to l Spee4 f-lee t-icr. ^ . 5.E.

Amendmentflo./M expected maximum emergency loading not to exceed the / 173 continuous rating to demonstrate operational readiness. The

(, test shall continue for a minimum period of one hour.

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3.10 LIMITING CONDITIONS FOR OPERATION 4.10 SURVEILLANCE REQUIREMENTS y.

- ~. - ~ -- n The-undervoltago-aata=wLla-starring

. b. Doeratina Cycle Test eiceuit of neh-diesel reneen+er-sha+1' M be-tented-onee-a-menhh,

1. The actual conditions under which the diesel generators are required to start automatically will be simulated and a .

nm n per-operat-4ng-eyele r -the--eetel-test conducted to demonstrate that they will start within 13 eend i t-io ne-u nd e r-w h ieh-4 he-4Eenel seconds and accept the emergency loads and start each load generatece-erc rcquired-to-start-within the specified starting time. The results shall be . auto m tically d 11 be simuloted-and-w logged. test-condueted te & nat-rate-that-they will-s t e r t-w i t h in-13-c eeend e-and-n ecep t-

c. Each diesel fuel oil transfer pump shall be tested in the-emergeney-load-n nd-s to rt-ench-load-accordance with Specification 4.0.E. wi+hin-the-epee 4fied -: art 4cg t i. %

reculte chat! '- icgged,

2. Battery Systems 2. Battery Systems The following battery systems shall be a. Every week the specific gravity, operable: temperature, icvel, and voltage of the pilot cell and overall battery voltage

a. The four Neutron Monitoring and Process shall be measured and logged.

Radiation Batteries, associated chargers, and 24 VDC Distribution Pancis. b. Every three months the voltage, temperature, level, and specific gravity of each cell, and overall battery

b. The two main station battery systems voltage shall be measured and logged.

consisting of:

c. Once per operating cycle each ECCS

1. Battery A1, Battery Charger A or battery, Alternate Shutdown AS-2 Spare Charger AB and Bus DC-1. battery, and Main Station battery shall be subjected to'n Service (Load Profile)

2. Battery B1, Battery Charger B or discharge test. The specific gravity Spare Charger AB and Bus DC-2. and voltage of each cell shall be measured after the recharge at the end l c. Two Switchyard Batteries each with one of the discharge test and logged.

associated charger and its associated DC disMibution panel.

Amendment No. 58[/[ 174 l

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