ML20212F694

From kanterella
Jump to navigation Jump to search
Proposed Tech Specs,Increasing Required Vol of Stored Fuel in Diesel Fuel Oil Storage Tank
ML20212F694
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 09/21/1999
From:
VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20212F682 List:
References
NUDOCS 9909280320
Download: ML20212F694 (7)
v • d • e


Text

r

  • ~

VERMONT YANKEE NUCLEAR POWER CORPORATION Docket No. 50-271 BVY 99-119 Attachment 3 Vermont Yankee Nuclear Power Station Proposed Technical Specification Change No.198 Diesel Fuel Oil Storage Tank Minimum Volume Marked-up Version of the Current Technical Specifications 9

I J

VYNPS 3.10 LIMITING CONDITICNS FOR I

4.10 SURVEILLANCE REQUIREMENTS OPERATION

4. 480 V Uninterruptible_ 4. 480 V Uninterruotible Power Systems Power Systems From and after the date When it is determined that one that one Uninterruptible Power Uninterruptible Power System or itsll System or its associated Motor associated Motor control Center are made Control Center is or found to be inoperable, the inoperable for any requirements of reason, the Specification 4.5.A.4 requirements of shall be satisfied.

Specification 3.5.A.4 shall be satisfied.

5. RPS Power Protection From and after the date that one of the two redundant RPS power protection panels on an in-service RPS MG set or alternate power supply is made or found to be inoperable, the associated RPS MG set or alternate supply will be taken out of service until the panel .

is restored to operable status.

C. Diesel Fuel C. Diesel Fuel There shall be a minimum of 1. The quantity of diesel

';5,00 Qusable gallons of generator fuel shall be diesel fuel in the diesel logged weekly and after fuel oil storage tank. each operation of the unit.

h ooo Once a month a sample 2.

of diesel fuel shall be taken and checked for quality. The quality

-shall be within the applicable limits specified on Table I of ASTM D975-68 and logged.

218 Amendment No. GG, 212

I . .

VYNPS BASES: 3.10 (Cont'd)

In the event that one off-site power source and one emergency diesel generator are unavailable, adequate power is available to operate both emergency safeguards buses.from the operable off-site power source and to operate 100% of the minimum emergency safeguards loads from the operable diesel generator. In addition, the station blackout alternate ac source of power is capable of supplying power to the bus with the inoperable diesel generator. Therefore, continued operation l is permitted for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with one off-site power source and one  !

emergency diesel generator unavailable.

Either of the two station batteries has enough capacity to energize the vital buses and supply d-c power to the other emergency equipment I for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> without being recharged. In addition, two 24 volt ECCS Instrumentation batteries supply power to instruments that provide automatic initiation of the ECCS and some reactor pressure and level indication in the Control Room.

Due to the high reliability of battery systems, one of the two batteries may be out of service for up to three days. This minimizes the probability of unwarranted shutdown by providing adequate time for reasonable repairs. A station battery, ECCS Instrumentation battery, or an Uninterruptible Power System battery is considered inoperable if one cell is out of service. A cell will be considered out of service if its float voltage is below 2.13 volts and the specific gravity is below 1.190 at 77'F.

The Battery Room is ventilated to prevent accumulation of hydrogen gas. With a complete loss of the ventilation system, the accumulation of hydrogen would not exceed 4 percent concentration in 5 days.

Therefore, on loss of Battery Room ventilation, the use of portable ventilation equipment and daily sampling provide assurance that potentially hazardous quantities of hydrogen cas will not accumulate.

C. M 54 889 The minimum diesel fuel supply of(20,000)gallons will supply one diesel generator for a minimum of seven days of operationjfliiaIying

  • h- leed requirr ente far th: :;;;;ti:n :: th; :: :;; r:: equir :nt Additional Iuel can be obtained and delivered to the site from nearby sources within the seven-day period.

& $l4r-4 g mo sw.

Amendment No. 64, 44, 444, ""Y DS-52, BVY 99-55 221a

^

VERMONT. YANKEE NUCLEAR POWER CORPORATION Docket No. 50-271 BVY 99-119 Attachment 4 Vermont Yankee Nuclear Power Station Proposed Technical Specification Change No.198 -

Diesel Fuel Oil Storage Tank Minimum Volume Retyped Technical Specification Pages 9

r.

- VERMONT YANKEE NUCLEAR POWER CORPORATION  !

BVY 99-119 / A;tachment 4 / Page 1 4

i i

Listing of Affected Technical Specifications Pages Replace the Vermont Yankee Nuclear Power Station Technical Specifications pages listed below

. with the revised pages. The revised pages contain vertical lines in the margin indicating the areas ofchange.

I Remove Insert i 218- 218 l 221a 221a i

l l

j

F .

1

)

e ,; ., <

VYNPS.

i

'3.10? LIMITING CONDITIONS FOR 4.10 SURVEILLANCE REQUIREMENTS OPERATION'

4. 480 V Uninterruptible 4. 480 V Uninterruptible Power Systems- Power Systems
From and after the date When it is 'etermined d

that'one Uninterruptible that one Uninterruptible Power System or its Power System or its associated Motor Control associated Motor Control

. Center are made or found . Center is inoperable, to be inoperable'for any. the requirements of reason,Lthe' requirements Specification 4.5.A.4

of Specification 3.5.A.4 shall be satisfied.

. shall be satisfied. I i

.5, RPS Power Protection .

-From ano after'the date- l that one of the two l l

redundant RPS power

, protection panels on an I

in-service RPS MG set or

! -alternate power supply  !

l' is made or found to be inoperable, the associated RPS MG set or alternate supply will be taken out of service until the panel is restored to operable j status'.

l .

1

.C. Diesel Fuel-  ;

C. Diesel Fuel There shall be a minimum of 36,000 usable gallons of 1. The quantity of diesel diesel fuel in the diesel generator fuel shall be fuel oil storage tank. logged weekly and after  ;

each operation of the  ;

unit.

2. Once a month a sample of diesel fuel shall be ,

taken and checked for quality. The cuality shall be within the applicable limits specifieo on Table I of i ASTM D975-68 and logged.

Amendment No..G4, 444 218 j

VYNPS BASES: 3.10 (Cont'd)

In the event that one off-site power source and one emergency diesel generator are unavailable, adequate power is available to operate both emergency safeguards buses from the operable off-site power source and to operate 100% of the minimum emergency safeguards loads from the operable diesel generator. In addition, the station blackout alternate ac source of power is capable of supplying power to the bus with the inoperable diesel generator. Therefore, continued operation is permitted for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with one off-site power source and one emergency diesel generator unavailable.

Either of the two station batteries has enough capacity to energize the vital buses and supply d-c power to the other emergency equipment for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> without being recharged. In addition, two 24 volt ECCS '

Instrumentation batteries supply power to instruments that provide automatic initiation of the ECCS and some reactor pressure and level indication in the Control Room.

Due to the high reliability of battery systems, one of the two batteries may be out of service for up to three days. This minimizes the probability of unwarranted shutdown by providing adequate time for l reasonable repairs. A station battery, ECCS Instrumentation battery, or an Uninterruptible Power System battery is considered inoperable if I

one cell is out of service. A cell will be considered out of service if its float voltage is below 2.13 volts and the specific gravity is below 1.190 at 77'F.

The Bettery Room is ventilated to prevent accutuulation of hydrogen i gas. With a complete loss of the ventilation system, the accumulation l

of hydrogen would not exceed 4 percent concentration in 5 days.

Therefore, on loss of Battery Room ventilation, the use of portable ventilation equipment and daily sampling provide assurance that potentially hazardous quantities of hydrogen gas will not accumulate.

l The minimum diesel fuel supply of 36,000 gallons will supply one C.

diesel generator for a minimum of seven days of operation at its continuous duty rating of 2750kW. Additional fuel can be obtained and delivered to the site from nearby sources within the seven-day period.

l 1

{

Amendment No. &G, 64, 466, "vY OS-52, EVY 00-55 221a J

Retrieved from "https://kanterella.com/w/index.php?title=ML20212F694&oldid=3100275"