ML18054B111

Proposed Tech Specs Incorporating New Requirements Into Section 3.7 Re Electrical Sys,Including Increase in Min Amount of Fuel Oil Required to Be Available for Plant Diesel Generators That Will Ensure Fuel Oil Supply at All Times

ML18054B111
Person / Time
Site:	Palisades
Issue date:	11/13/1989
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18054B110	List: ML18054B109 ML18054B111
References
NUDOCS 8911220293
Download: ML18054B111 (22)

Text

...

A'ITACHMENT 1 Consumers Power Company Palisades Plant Docket 50-255 PROPOSED TECHNICAL SPECIFICATION PAGE CHANGES November 13, 1989 5 Pages

i3. 7 ELECTRICAL SYSTEMS Applicability

-Applies to the availability of electrical power £or the operation of plant components.

- Objective To define those conditions of electrical power availability necessary to provide for safe reactor operation and the continuing availability of engineered safety features.

3.7.1 Specifications The primary coolant system shall not be heated or maintained at temperatures above 325°F if the f~llowing electrical systems are not operable:

a. Two physically independent circuits between the off-site I transmission network and the on-site Class lE distribution system I via the following transformers: -I I

1. Safeguards Transformer 1-1 I 2.. Startup Transformer 1-2 I I

b. Deleted I -

c. 2400 V engineered safeguards buses le and lD.

d. 480 V distribution buses 11 and 12.

e. MCC No 1, 2, 7 and 8.

f. 125 V d-c buses No 1- and 2.

g. Four preferred a-c buses.

h. Two station batteries and the d-c systems including at least one battery charger on each bus.

i. Both diesel generators, with. a minimum of 2500 gallons of fuel in each day tank and a minimum of 21,500 gallons of I fuel in the underground storage tank.

j. Switchyard battery and the d-c system with one battery charger.

k. 240 V a~c power panels No 1 and 2, and their associated ACB breaker distribution systems.

1. 2400 V bus lE.

3_. 7. 2 The requirements of Specification 3.7.1 may be modified to the extent that one of the following conditions will be allowed after the reactor has been made critical. If any of the provisions of those exceptions are violated, the reactor shall be placed in a hot shutdown condition within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. If the violation is not corrected within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the* reactor shall be placed in a cold shut_down condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3-41 f/Jt!t!iit Amendment No.

TSP1189-0005-NL02

ELECTRICAL SYSTEMS (Contd)

a. With less than two of the required off-site power circuits I available, operation may continue for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> provided I the operation of both diesel generators is demonstrated _ -/

inunediately. Continued operation beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> is permissible f provided that capability exists to backfeed power to the Class -I IE buses via the delayed access circuit (Station-Power Transformer/

I-2) and provided that a report is sent to the NRC inunediately I with an outline of the plans for restoration and the additional I precautions to be taken while the circuit is out of service. I

b. Deleted I

c. 2400 V engineered safeguards bus IC or ID may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided the operability of the diesel generator associated with the operable bus is demonstrated immediately and there are no inoperable engineered safety feature components associated with the operable bus.

d. 480 V distribution bus II or I2 may be inoperable for up to 8'hours provided there are no inoperable safety feature components associated with the operable bus.

e. MCC No. I and 7 or 2 and 8 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with the operable pair of MCC.

f. I25 V d-c bus No. I or 2 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with ,the operable bus and adequate portable emergency lighting is available during the inoperability of the No 2 bus.

_g. One of the four preferred a-c buses may be inoperable for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided the reactor protection and engineered safety feature systems supplied by the remaining three buses are all operable.

h. One of the station batteries may be inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, providing both battery chargers on the affected bus are in operation.

i. One of the diesel generators may be inoperable for up to 7 days (total for both) during any month, provided the other diesel is started to verify operability, shutdown and the controls are left in the automatic mode, and there are no inoperable engineered safety feature components associated with the operable diesel generator. -

3-42 f/Jttttr.at Amendment No. SS, TSP I I89-0005_-NL02

3.7 e

ELECTRICAL SYSTEMS (Contd)

j. 240 V a-c power panel No I or power panel No 2 may be.

inoperable provided that the associated ACB breakers are maintained operable by other means. If the ACB breakers are not maintained operable, either power panel niay be inoperable for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided that the associated ACB breakers are.in the "open" position.

k. The switchyard battery may be inoperable for 24. hours provided both battery chargers are operable.

1. The 2400 V bus IE may be inoperable up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

m. The I25 V d-c power panel No I or power panel No 2 may be

• inoperable provided the associated ACB breakers are maintained operable by other means *. If. the ACB breakers are not maintained operable, either power panel may be inoperable for up* to 24* hours provided that the associated ACB breakers are in the "open" position.

Basis The A.C. power system consists of two off-site power sources I (preferred power) and two on-site standby power sources (diesel I generator units). I I

The design of the A.C. power system provides independence and I redundancy to ensure an available source of power to the Engineered I Safety Feature (ESF) systems. Two independent circuits between the I off-site transmission network and the on-site Class IE distribution I system and two independent standby diesel generators are normally I required. These ensure availability of the required power to I shutdown the reactor and maintain it in a safe shutdown condition I after an anticipated operational occurrence or a postulated design I basis accident. I I

The on-site A.C. safeguards power system consists of two independent I 2.4 kv ESF distribution systems with their respective 480-volt. l load centers and.motor control centers, and the I20~volt preferred I A.C. power system. Each 2.4 kv ESF bus is normally connected to I off-site power via Safeguards Transformer I-I. Upon loss of this I preferred source to the 2.4 kv ESF buses, a fast transfer to an I alternate preferred source of power (Startup Transformer I-2) is I provided. Upon loss of both imniediate access off-site power sources, I the ESF buses are energized from the diesel generators. Bus load I shedding, transfer to the diesel generator ay~)energization of

• I critical loads are performed automatically.

• Capability is

• I provided to restore off-site power via the.delayed access off-site I power circuit (Station Power Transformer I-2). I 3-43 ¢tttf.:ltat Amendment No.

TSPII89-0005-NL02

3.l ELECTRICAL SYSTEMS (Contd)

With Safeguards Transformer 1-1 out of service, capability is I provided to. connect the 2.4 kv ESF buses to St~ticm Power */

Transformer 1-2. When connected to Station Power Transformer 1-2 I a reactor and/or generator trip will result in a fast transfer of I ESF loads to the startup source (Startup Transformer 1-2). I Continued operation beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> with one of the independent I off-site circuits out of service is based on the capability I provided for backfeeding the Class lE buses via the delayed access I circuit (Station Power Transformer 1-2). The design of the delayed I access circuit allows for establishing this source of supply within l one hour. The Station Blackout coping duration, determined in I compliance with 10CFR50.63, has been established as four hours. I Thus, the one hour time period required to establish the delayed I access circuit provides that this circuit would be available in I sufficient time,. following a loss of all on-site AC power supplies I

• and the other off-site AC power circuits, to assure that specified I acceptable fuel desig'n limits and design conditions of the reactor I coolant pressure boundary are not exceeded. I Equipment served by auxiliary buses and MCC is arranged so that loss of an enti{~)bus does not compromise safety of the plant during DBA conditions. For example, if 2400 V bus lD is lost, two service water pumps, one containment spray pump and three containment air cooler recirculation fans are lost. This leaves two containment spray pumps, one containment air cooler recirculation fan and one service water pump, which is more than sufficient to control containment pressure below the design value during the DBA.

The requirements for MCC No 1, 2, 7 and 8 and 480 V distributions buses 11 and. 12 will assure availability of safety equipment such as charging pumps, boric acid pump.s and safety injection valves.

The 125 V d-c buses No 1 and No 2 are required for critical instrument and control operations.

• The.total day tank capacity of 2700 gallons on each diesel is considered more than adequate since approximately 28 hours3.240741e-4 days <br />0.00778 hours <br />4.62963e-5 weeks <br />1.0654e-5 months <br /> running time (worst case loading) is available before transfer to fuel oil from the 30,000-gallon underground storage tank is mandatory. Two 20-gpm diesel oil transfer pumps with each being fed from a different diesel are availab.le for transferring fuel oil from the storage tank to the day tanks. In addition, a connection is available outside the diesel rooms to pump oil directly into the day tanks from an oil tanker truck.

The 24,000 gallons total in the storage tank and the day tank-will I supply one diesel generator for a miriimum period of 7 days I 3-44 0tlr/,lii.il Amendment No *.

TSP1189-0005-NL02

• 3.7 ELECTRICAL SYSTEMS (Contd) assuming atsfdent loading conditions and fuel conservation /

practices. It is recognized that both diesel generators would I start during most accident conditions increasing the init_ial rate_ I of fuel consumption. With actions to conserve fuel .initiated after ./

an assumed delay of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, however, the volume of fuel available I to support diesel generator operation is still considered adequate. ./

It is considered incredible not to be able to secure fuel oil from I

• one of several sources within a radius of 70 miles in less than I three days under the worst of weather conditions. I One battery charger on each battery shall be operating so that the batteries will always be at full charge in anticipation of loss-of-ac power incident. This insures that adequate d-c power will be available for starting the emergency generators and other emergency uses. Each battery has two battery chargers available rated at 200 amperes each. Except for the first minute following a OBA, th'e capacity of the two battery chargers will handle all required loads~

The second battery continues to be available in the event of a OBA to pick up the(~~ad from its half of the installed engineered .

safeguards. Each of the reactor protective system channels and the engineered safeguards instrumentation channels is supplied by one of the preferred a-c buses. The removal of one of the preferred a-c buses is permitted as the 2-of-4 logic can be chay~1d to a 2-of-3 or 1-of-2 logic without compromising reactor safety *.

Reliable switchyard operation requires the availability of the d~c system in the switchyard for breaker controls and the 240 V a-c system for air compressor operation.

• The power and air requirements are small, however, and readily adaptable to temporary hookup to alternate power panels or air compressors, so continued operation without the time limitations is permitted provided the affected ACB breakers can be restored to operability through such temporary hookups. In all such situations, restoration to normal conditions shall be accomplished as soon as practicable.

The 2400 V bus lE is required to assure.availability of the pressurizer heaters.

To attain a high degree.of ~eliability for starting and assuming load, the unit will be started to prove operability and shutdoWn.

with the controls left in the automatic "start" position.

References (1) FSAR, Section 8.1.2.

(2) Deleted I (3) FSAR, Section 8.3.2.

(4) Deleted I (5) FSAR, Section 8.4.1.

(6) FSAR, Section 8.4.2.

(7) FSAR, Section 8.3.5.

3-45 0tt'l,-/.iit .

Amendment No.

TSP1189-0005-NL02

ATTACHMENT Consumers Power Company

• Palisades Plant Docket 50-255 MARKED UP TECHNICAL SPECIFICATION PAGES November 13, 1989 17 Pages OC1189-0005-NL02

3.7 ELECTRICAL SYSTEMS Applicability Applies to the availability of.electrical power for the operation of plant components.

Objective To define those conditions -of electrical power availability necessary to provide for safe raactor*operation and the continuina availability of engineered safety features.

3.7.1 Specifications The primilry coolant system shalt not be heated or ..intained at*

temperatures above 325°F if the folloving electrical syatems are not operable:

power transformer 1-2 (2400 V).

b. Start-up transformer l-2 (2400 V).

c. 2400 V engineered safeguards buses lC and lD.

d. 480 V distribution buses 11 and 12.

e. MCC No 1, 2, 7 and 8.

• f. 125 V d-c buses No 1 and 2.

g. Four preferred a-c buses.

h. Two station batteries and the d-c systems including at least one battery charger on each bus. *

i. Both diesel generators, with a aini*19 of 2500 gallons of fuel in each.day tank and a minimum of 16,000 gallons of fuel in the underground storage tank.

j. Switchyard battery and the d-c system with one battery charger.

k. 240 V a-c power panels No 1 and 2, and their associated ACB

. breaker distribution systems.

1. 2400 V bus lE.

3.7.2 ~e requirements of Specification 3.7.1 may be modified to th* extent that one of the following conditions will be allowed after th~ reactor has been made critical. If any of the provisions of those exceptions are violated, the reactor shall be placed ~ a hot shutdown condition within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. If the violation is not corrected within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,

. the reactor shall be placed in a cold shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3-41 TSP0585-0208A-NL04

Change A.

a. Two physically independent circuits between the off-site transmission network and the on-site Class 1E distribution system via the following transformers:

1. Safeguards Transformer 1-1

2. Startup Transformer 1-2

• )

OC1189-0005-NL02

3.7 ELECTRlcAL SYSTEMS Applicability Applies to the availability of electrical power for the operation of plant components.

• Objective To define those conditions of electrical power availability necessary to provide for safe reactor operation and the continuing availability of engineered safety features.

3.7.1 Specifications The primary coolant system ahall not be heated or ..intained at temperatures above 325*p if the following electrical syateas are not operable:

a:..*__:S~t::a::t:.:i:.::o.::.n--'pr_:o~v:.:e:.:r:..._:t~r~an~s~f~o~~_..-"-'2~(~2400 V) *

b. Start.;.up transformer 1-2 (2400 V). J)e.le.4-e. t '"'"b<Z.V-\- C. hCl..v\.~e. ~;

~~~~~~~~~~~~~~~~~--

c. 2400 V engineered safeguards buses lC and ID.

d. 480 V distribution buaes 11 and 12.

e. MCC No 1, 2, 7 and 8.

f. 125 V d-c buses No 1 and 2.

g *. Four preferred a-c buses.

h. Tvo station batterie* and the d-c systems including at least one battery charger on each bua.

i. Both diesel generatora, vith a 11fni** of 2500 gallons of fuel in each day tank and a llinimum of 16,000 gallons of fuel in the underground storage tank *.

j. Switchyard battery and the d-c system vith one battery charger.

k. 240 V a-c power panels No 1 and 2, and .their associated ACB breaker diatribution systems.

1. 2400 V bus IE~

3. 1.* 2 . The requirement a of Specification 3. 7 .1 may be modi£ ied to the extent that one of the following conditions will be allowed after_the reactor haa been made critical. If any of the provisions of thoae exceptions are violated, the reactor shall be placed in a hot shutdown condition within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. If the violation is not corrected within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the reactor shall be placed in a cold shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. . ,

3-41 TSP0585-0208A-NL04

3.7 ELECTRICAL SYSTEMS (Contd) j) e \e.+c:. 'i. Station power transformer 1-2 (2400 V) may be inoperable for up l >'\ :,a.< t- C..ho..~e. 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s- provided the operabil~ty of both.diesel generators is emonstrated immediately.

b. Start-up transformer 1-2 (2400 V) may be inoperable for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided the operability of both diesel generators is demonstrated immediately. Continued operation beyond 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is permissible provided that a report is sent to the NRC immediately with an outline of the plans for prompt restoration of the start-up transformer and the additional precautions to be taken while the transformer is out of service, and continue operating until notified differently by the NRC. .I

c. 2400 V engineered safeguards bus lC or lD may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided the operability of the diesel generator associated with the operable bus is demonstrated immediately and there are no inoperable engineered safety feature components associated with the operable bus.

d. 480 V distribution bus 11 or 12 may be .inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with the operable bus.

e. MCC No. 1 and 7 or 2 and 8 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with the operable pair of MCC.

f. 125 V d-c bus No. 1 or 2 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with the operable bus .and adequate portable emergency lighting is available during the inoperability of the No 2 bus.

g. One of the four preferred a-c buses may be inoperable for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided the reactor protection and engineered safety feature systems supplied by the remaining three buses are all operable.

h. Ona of the station batteries may be inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, providing both battery chargers on the affected bus are in operation.

i. One of the diesel generators may be inoperable for up to 7 days*

(total for both) during any month, provided the other diesel is started to verify operability, shutdown and the controls are left in the automatic mode, and there are no inoperable engineered safety feature components associ'ated with the operable diesel generator.

• 10 days one time only, for th~ mottth of May 1985.

t>fl.g1.-A41.

Amendment No. 88 3-42 June 5, 1985 TSP0585-0208A-NL04

Change c.

a. With less than two of the required off-site power circuits available, operation may continue for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> provided the operation of both diesel generators is demonstrated immediately. Continued operation beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> is permissible provided that capability exists to backf eed power to the Class lE buses via the delayed access circuit (Station Power Transformer 1-2) and provided that a report is sent to the NRC immediately with an outline of the plans for restoration and the additional precautions to be taken while the circuit is out of service.

OC1189-0005-NL02

3.7 ELECTRICAL SYSTEMS (Contd)

a. Station power transformer 1-2 (2400 V) may be inoperable for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided the operability of both diesel generators is demonstrated immediately.

tart-up transformer 1-2 (2400 V) may be inoperable for up to lk..~te. {. 1"'~e:r 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided the operability of both diesel generators is demonstrated immediately~ Continued operation beyond 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is *

(_ k.a.."' ~e. 'U . permissible provided that a report is sent to the NRC immediately with an outline of th* plan* for prompt reatoration of the start-up transformer and the additional precautions to be taken while the transformer is out of service, and continue operating until notified differently by the NRC.

c. 2400 V engineered safeguards bus lC or lD may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided the operability of the diesel generator associated with the operable bus is demonstrated immediately and there are no inoperable engineered safety feature components associated with the operable bua.

d. 480 V distribution bus 11 or 12 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with the operable bus.

e. MCC No. 1 and 7 or 2 and 8 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable safety feature components associated with the operable pair of KCC.

f. 125 V d-c bus No. 1 or 2 may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided there are no inoperable aafety feature components associated with the operable bus and adequate portable emergency lighting is available during the inoperability of the No 2 bus.

g. One of the four preferred a-c buses may be inoperable for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> provided the reactor protection and engineered safety feature systems supplied by the remaining three buses are all operable.

h.

• One of the station batteries may be inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, pr~iding both.battery chargers on the affected bus are in operation.

i. *0ne of the diesel generators may be inoperable for up to 7 days*

(total for both) during any month, provided the other diesel is started to verify operability, shutdown and the controls are left in the automatic mode, and there are no inoperable engineered safety feature components assocfated with the operable diesel generator.

• 10 days one time only, for the mo~th of May 1985.

• r/Jttt,l:M.t.

Amendment No. 88 3-42 June 5, 1985 TSP0585-0208A-NL04

BLlm!tl'CAL S!B&B ( Ocm4)

3. 2llO 1' a-o ,.._. J1U91- lo 1 or poNI' pael. lo 2 97' be 1DOpaUl9 pro-Tid9I t11n tile auodatm ACI ~ an ..atat-4 ~-

CJUi. w . rt tlle ACI blnlDln an not a1lrta1Jia4 operable, *1tber paRI' pae1 aia7 be iDoperable* tr. ap to 2i. baar8 prcmcle4 that tJllt aa80date4 ACl*bz Hkan an 1D tbl *opea* pOattioa* *

k. '1'bl m.tc!QU'4 b&ttu7 ~ b9 1-perable tor 24 ~ prond8d both mttft7 cbatpn an opaa'19.

1. '!'mt 211oc> y . . 1B 87 'be 1Dopftabl.e ap to 24 hoan.

m. '!'be 125 Y 4-c power JIU91 lo 1 ar pavv pmel So 2 87 be taopenble pronded ti. auod&W ACI 'br nan an miuta1De4 openbl* ~.other.

mew. u the ACI bz111bn an mn milltaiDecl operable, ettber power pael _,.be 1DDprtsbl* tor ap to 24 baan.. prD"f'1d84 tat the*auo-ctatecl ACB .'breaten are 1D tbl **opm

• poa1t1on.

Bui*

'l'be eleetricsl. 17ft* equipment 1* &Z'NllpCl IO that no .tacle c:ma-ttngeq ean tnac:ti*te eaoap ~ eqmi-ut to Jeopudize the pJ.aat iateq.. !he 1tao v equipmlt 1. ~ an t111o lNM..* 'l'be 2llOO Y equipaeat &l..8o i* nppUe4 t.ral t'l.o bu.a.

'!'be uor-.1 source ot amil1&17 JIOllV*vtt1a U. plant at power 19 tram tlMt station power trautormn being tecl trm ta a1D &91Wrator V1th stan4b,- Pciver trm the atart-up tnutormer &n4 eMrpDCJ paver tl'm ettber on ot tvo 41nel generaton. (l) '1'o npplement the staa4b7 paver 10arce, a qare 345 kV/'22 tnmatomer would be aftilabl* vbicb,

.1A cmbinat1oa vi th otmr mbUe tnutonwr* i could 'be connec:tecl to tab tbl place~ tbe Rart:-gp tnutomer. rt 1* eati.Mted that it

. coul4 take approzbiateJ.7 dz veeu to .,.,. aU ~ the r9qmre4 equipe ment oa *1te u4 to place 1t 1D *mce. <2 > 'bre an two m_zpaaq

.paver 10arcea on *1ta vhicb do not req,a11'9 outatdo power or ue ot tm n.n-ap tnutormr. Upoa lou ot amw.l !:!!! ~ pover _IOm'cea, tm 2i.oo Y *'ba8M an energ1zecl tZ"Cll tbe 41eMl pneraton. Bu load

• h*Miac, *trauter to thll cl1eM1 ~tor an4 picbp ~- critical. load.a.

are c:am.ect out a=c:-tt~. (3) . .- . -

When tm tu:rld.ne gnerator 1* out ot Mrrtce tor an atea.ded penod.,

the generator c:an be 110lated. ~the removal ot llnU ill the bu be_.

tween the generator ancl tbe Ja1n tnnatormr, &llcv1ng th9 a1D tnm*-

tormr - t11e nat1on -  :::--- to be - . . . - to H"1ce~Oi~iRillllD CtlPl

e e

'(_..., .,.

3.7 tvo 416o V bun *ch provide paver tor tvo pr1ar7 coolJmt IQIP9 aml a cocd8uate pmp.< 4> Operat10ll ~tile plant coal4 coat1mae 1r

+~ oae ot theM bwle* vere not available u lone u pcJlill9I' leftl, etc, 0

v were in accordallce With Sectioaa 2 Ul4 3.2.2 ~ thue *pec:1ftcat1oaa.

l..u The de*isn ~ the electrical a19tem bu beea carried. out vitla reli-II)

'T7 ability u a pr1M conaiderat1on. Station paver 1* proTi.decl flom

~

~ three independent sources. The outage ot &111' two sourcea vill DOt *

\)

cause interl'Uption ~ eernce to the st&tiaa paver SQPq 2la0o Vo

, doVll to and. illCluding 125 V 4-c ~*

BquipnRt served bf auz:111&r7 buea and ICC is arranged. ao tmt lou ot an ent1l"e baa does not ccup:c\lil18e atet7 ~ the .pl.ant dar1Dg IJM conditiollS. (3) Por uamplel i t 24oo V bua lD 1* lon, two serrice water pumpa, one coatainmnt &PN7. pump ad. tbree co~ air cooler recirculation t&D8 are lost. 'l!l1a leafta tvo coataiDllent 8Jll"&T pumpa, one ccatainment air cooler rec:1rcul.&t1on taD aa4 one *"1.ce water pump, which la mere than'autticient to c:mtrol conta1nmnt prea-sure belov the .deeigo value during the DM *.

The requi~ta tor MCC 1lo 1 1 2, 1 and 8 and. 480 V d1stri'but1ona ba.ees 11 and l2 vUl uaure avallabillt)' ~ aatety equipment such u c:barg1ng pumps, boric acid pumps and. atet7 111Jection Val.vee. The 125 V 4-c buaea lo. 1 and. llo 2 ~ required tor cZ'1 ti cal iutrumnt aa4 control .

operat1ona.

The total day tank ca:;acit7 ot 2700 sa1J.ona oa *ch 41eael ia COl18i4-ere4 mere tmn adequate eince &pprm:lmat*l.7 28 houre running t1me'

• ( vo~ cue loading) ia aftilable before t1'8D8ter to tuel oil .trcim the 30,000-gallora underground storage tank 1* mandatOl"f. 'l'llo. 20-gpa diesel oil tnnater pam:p9 with each being ted trom a ditterent diesel are availabl* tor tl'allaterring ta.el oil trom the storage.tank to the day tanka *. Ia_addition; a connection la available outaide the 41eael rooms to pump oil 41rectl7 illto the da7 taDka troll an oU .tanker tnck-.

The 16,ooo galloria in the storage tank in acld1t1onto the d&y tank Will provide a diesel operation 1.111der*required loac11ng con4it1ona*tor a mi~ period ot 1 da79~(5}. It 1a ccmaidered illc:ndible not to be able to secure ~l oil trcm om ot several aourcee Within a rsdiua or 70 DU.lea in lee* tban tbree daJ'B ander the vorst.ot' weather coaditiona.

One batte%"7 cbarger OD *ch batt917 shall be operating so that the 3-44

u Change E.

The A.C. power system consists of two off-site power sources (preferred power) and two on-site standby power sources (diesel generator units).

The design of the A.C. power. system provides independence and.

redundancy to .ensure an available source of power to the Engineered Safety Feature (ESF) systems. Two independent circuits between the off-site transmission network and the on-site Class lE distribution system and two independent standby .diesel generators are normally required. These *ensure availability of the required power to shutdown the reactor and maintain it in a safe shutdown condition after an anticipated operational occurrence or a postulated design basis accident.

The on-site A.C. safeguards power system consists of two independent 2.4 kv ESF distribution systems with their respective 480-volt load centers and motor control centers, and the 120-volt preferred A.C. power system. Each 2.4 kv ESF bus is normally connected to off-site power via Safeguards Transformer 1-1. Upon loss of this preferred source to the 2.4 kv ESF buses, a: fast transfer to an alternate preferred source of power (Startup Transformer 1-2) is provided. Upon loss of both immediate access off-site power sources, the ESF buses are energized from the diesel generators. Bus load shedding, transfer to the diesel generator a~~)energization of .

critical loads are performed automatically. Capability is provided to restore offsite power via the delayed access off-site power circuit (Station Power Transformer 1-2).

With Safeguards Transformer 1-1 out of service, capability is provided to connect the 2.4 kv ESF buses to Station Power Transformer 1-2. When connected to Station Power Transformer 1-2 a reactor and/or generator trip will result in a fast transfer of ESF loads to the startup source (Startup Transformer 1-2).

Continued operation beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> with one of the independent off-site circuits out of service is based on the capability provided for backfeeding the Class lE buses via the delayed access circuit (Station Power Transformer 1-2). The design of the delayed access circuit allows for establishing this source of supply within one hour. The Station Blackout coping duration, determined in compliance with 10CFRS0.63, has been established as four hours. Thus, the one hour time period required to establish the delayed access circuit provides that this circuit would be available in sufficient time, following a loss of all on-site AC power supplies and the other off-site AC power circuits, to assure that specified acceptable fuel design limits and design conditions of the reactor coolant pressure

• boundary are not exceeded.

OC1189-0005-NL02

3.7 ELECTRICAL SYSTEMS Applicability Applies to the availability of electrical power for the operation of plant components.

Objective To define those conditions of electrical power availability necessary to provide for safe reactor operation and the continuing availability of engineered safety features.

3.7.1 Specifications The primary coolant system shall not be heated or maintained at temperatures. above 325°F if the following electrical systems are not operable:

a. Station power transformer 1-2 (2400 V).

b. Start-up transformer 1-2 (2400 V).

c. 2400 V.engineered safegliards buses lC and lD.

d. 480 V distribution buses 11 and 12.

e. MCC No 1, 2, 7 and 8.

f. 125 V d-c buses No 1 and 2.

g. Four preferred a-c buses.

h. Two station batteries and the d-c systems including at least one battery char er on Both diesel generators, with a minimum of 2500 gallons of fuel each day tank and.a minimum of 16,000 gallons of fuel in the underground storage tank. .

• J* Switchyard battery and the d-c system with ~ne battery charger.

k. 240 V a-c power panels No 1 and 2, and their associated ACB breaker distribution systems.

1. 2400 V btis lE~

3.7.2 The requirements of Specification 3.7.1 may be modified to the extent that one of the following conditions will be allowed after the reactor has been made critical. If any of the provisions of those exceptions are violated, the reactor shall be placed in a hot shutdown condition within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. If the violation is not corrected within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the reactor shall be placed in a cold shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3-41 TSP0585-0208A-NL04

Change F.

i. Both diesel generators, with a minimum of 2500 gallons of fuel in each day tank and a minimum of 21,500 gallons of fuel in the underground storage tank.

• OC1189-0005-NL02

3 *7 ELECTRICAL SYST1!JllS (Contd)

The tvo 416o V bwles each provide Power f'or tvo Primar7 coolant pmapa

( 4) . .

aad a ccmdeuate pmap. Operation ot the plallt could continue it oae ot these buses were aot available as long as power level, etc,

• were ia accordance vtth Sect1ol18 2 and 3.2.2 ot these spec:1t1cationa.

Tbe design ot the electrical &)'Stem bu been carried out vith re~

ab111 ty as a prime co11Siderat1on. Station power is providSd tram three independent sources. *The outqe ot 8D7 tvo sources Will not cause intaT11ptiou ot serri.ce to the station paver supp.17 2la0o V or below, down to and inclwling 125 V d-c ~.

F.quipnent served b7 auxil1&17 bwses and. MCC is arranged so that loaa ot an entire bas does not caap:rom1ae safet7 ot the plant during DBA

. cond1tio11S. (3) Por aample, 1t 24oo V bus lD is lost, t1lo serrtce water pumps, *one containment spra7. pump BDcl three coa:taimaaut air cooler recirculation f'BDS are lost. 'l!lia leaves tvo containment spray pumps, one containment air cooler recirculation f'on aad one aer'lice

• vater pump, vh1ch is more than"sutticient to control containment pres~

sure below the design value during the DBA.

The requirements tor MCC No l, 2, 1 and 8 BDcl 48o V distributions buses ll and 12 will assure availability ot satety equipment such as charg1ng pumps, boric acid pumps and aatet7 1.nJectioa valves. The 125 V d-c bwsea No 1 and. 1'o 2 &re required tor critical iastrument and control operatioaa.

b total day tank capacity of' 2700 gallons on each diesel is consid-ered mere tmn adequate since approx:lmate17 28 hours3.240741e-4 days <br />0.00778 hours <br />4.62963e-5 weeks <br />1.0654e-5 months <br /> running time .

(worst caae loading) is available before transfer to tuel oil troll the 30,000-gallon underground stOrage tank is mandatoey. Two 20-gpm d1ese.l oil transfer pumps with each being ted trom a ditterent diesel*

are available tor tnmsterring tuel oil trom the storage tank to the day tanks. In addition, a connection is aftilable outside the diesel rooms to pump oil direct into the da7 tanks trom an oil tanker truck.

mi-The 16,000 gallons in the storage tank in addition to the day tank Will provide a diesel operation under required loading conditions tor a period ot 7 days.(5). It is considered incredible not to be able to secure.fuel oil t%'Om one ot several sources Within a radius ot 70 miles in lese tban three da19 under the worst of weather conditi

• One battel"7 charger on each 'batter,r shall be operating so that the 3-44

.. u

\ *II

'\

-~.,.--r(_ *. ~ ~

Change G, The 24,000 gallons total in the storage tank and the day tank will supply one.diesel generator for a minimum period of 7 days at~yming accident loading conditions and fuel conservation practices. ** It is recognized that both diesel generators would start during most accident conditions increasing.the initial rate of fuel consumption. With actions to conserve fuel initiated after an assumed delay of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, however, the volume of fuel available to support diesel generator operation is still considered adequate. It is considered incredible not to be able to sec*ure fuel oil from one of several* sources within a radius of 70 miles in less than three days under the worst of weather conditions *

. OC1189-0005-NL02

,1 ci e e

. r.,

)

-~IL_-; .

• '(__..,*,.::,

3.1

~~- -

!:UC'!llCAL SYST!MS ( Co:td.)

~ttciu Vil!. &lV'q"S be at tu.ll e~ 1A ui.t!c_i.,atiCIZl at loH-ot-.c *

~- 1acidallt. _ '?hi* iuura tat &deq,u&te d.-c ~ *will be a~- -

bl* ~or ~ tu emraaq puraton azid otU: ~ ga**

~ battu7 ua nil) bat'te.""7 c:.az.pn an11 *l:ile rs.tee! &'t 200. lllDC'9*

ea=. Em~ tor* the tint m.:ut* to.ll.owUlc a OJA.. th~ cap&c:it7 at the two b&ttU"T ebarpn vill ha4le all requind lc&da. 'l:htt Hcazad.

b&ttCT eOAtizmu to be am 1 *bl* 1A ta. eftllt at a DIA to pick up tae lOad :rem it* l1&l.: at the i:st&Ue4 ueiAeveci 1ate~ .. (a) :.:ac!l at the reactor prctectin ITSt* eh*=*la azid the aq:!.:lffZ'H 1atecuazd,I iutrwtation chtnnel1 i* su;plie4 bT cu ot the pnterncl &-c buses. the removal ot * =* ot tm pretv:-ed. a-c lNa** 1* ~tted.

u the 2-ot~ lolie cu be c~ to a 2-ot-3 or l-ot-2 lalir:

vithcut campz omiai:sg reactor l&t8t7. ( 1)

Reuahl.e 1Vitclz7V4 opent!on req,uiru the an.11 aM' ftJ' ot ~ d.-c.

17St* i : tu nit~ tor bnUc'.c~ ~~ta..2~.v &-c 11ft*

!or &:1: ca::pzHIOI' open.ticA. '?he ;icwu" ad&!:' req,~* &..... mll *. ~

ad ned 117 &d&pt&bl.8 to taporV7 =c1m; to &l.tu--&t* pov9Z' ~

Panel*

ta~!ona or *-

&:1r c:cmp1"eHon, 10 C0211:izlue4 op~ticZL,Yi~!:out the tim9 li:l:l.-

1* pend.tted. ~cied. the attec:4:ecl Ag m-.&en ca. be reston4 to oper~ilitJ' tbrougA lucll temponl7 booku;**. Iza a:.i_ au.cl:!- litiat!om, restoration to =r.l&l c:ozicUtiom sh&U be accampli1he4 u ICOZl u practicable.

?:e 2400 V bua l ! 11 requ!..-.d. to uaun an", *l:iili~ ot 4:h.e p=e11U:"i:e:

lie&tU'S.

To attain.& hieh degree at reliability :~r stani:c &114 u~ load, the u:it vill be started to ~ opvabilit7 Ul.d. 1h11td.cml Vi~rthe colltrola left 1A the autcmat!c "start" poaiC.=..,

aetenncH ci>  !'SAi, Secti.oA a.1.a *. De. le.Je. t l *'\ ~e<"' +

c2> 1'SAB, Ame""~ 10. 14, ch~~e. rt (3) rsa. s.cti= a.3.a.

C4> 11Wl, Sec:ti= a.3.1.

rsAa, Sct1= a.4.l.

'SA.ll. Sectiozi 8.4.2.

FSAa, S~iOll 8.3.~ t~;i\i\\U.l\l t\lf1

. 3~5

Change H.

References (1) FSAR, Section 8.1.2.

(2) Deleted

.(3) FSAR, Section 8.3.2.

(4) Deleted (5) FSAR, Section 8.4.1.

(6) FSAR, Section 8.4.2.

(7) FSAR; Section 8.3..5.

OC1189-0005-NL02