ML20196L489

Documents Results of Page by Page Review of Tech Specs,Per K Heitner Request Following Initial Review of Proposed 880420 License Amend.No Technical Differences Between Util & NRC Tech Specs Exist.Word Processing Formats Different

ML20196L489
Person / Time
Site:	Fort Saint Vrain
Issue date:	07/01/1988
From:	Robert Williams PUBLIC SERVICE CO. OF COLORADO
To:	Calvo J Office of Nuclear Reactor Regulation
References
P-88232, TAC-67933, NUDOCS 8807070529
Download: ML20196L489 (15)

Text

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P.O. Box 840 Denver, CO 80201- 0840 July 1, 1988 R.O. WILLIAMS, JR.

Fort St. Vrain VICE PRESIDENT NUCLEAR OPERATIONS Unit No. 1 P-88232 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Attention: Mr. Jose A. Calvo Director, Project Directorate IV Docket No. 50-267

SUBJECT:

FSV Technical Specification Review

REFERENCES:

1) NRC Letter, Wagner to Lee, dated 3/21/83 (G-83127)

2) PSC Letter, Williams to Calvo, dated 4/20/88 (P-88116)

Dear Mr. Calvo:

The purpose of this letter is to document the results of a page by page review of the Fort St. Vrain (FSV) Technical Specifications.

The review was conducted at the request of Mr. K. Heitner following his initial review of the propcsed license amendment submitted by Reference 2. Mr. Heitner identified a possible discrepancy between the proposed amendment and Amendment No. 34 to the FSV Technical Specifications (Reference 1). PSC has confirmed that the discrepancy between the NRC copy of the Technical Specifications and the PSC pages submitted by Reference 2 is a word processing difference only.

Since PSC uses a computerized word processing system for its Technical Specifications, information is re-formatted as amendments to the Technical Specifications are issued. The PSC format provides a page to page consistency in appearance and computerized word search capability.

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8807070529 DR 8807o1 ADOCK 05000267 PDC

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P-88232 July 1, 1988 The review compared a PSC copy and the NkC copy of the FSV Technical Specifications. .As an example of differences, the note in the _NRC's Amendment 34 '(page 4.6-1 of Reference 1) is now found on page 4.6-6

, of PSC's copy of the Technical Specifications. No other changes were associated with this amendment request.

Other minor differences noted in LC0 4.6.1 were as a result.of the re-formatting. No technical differences exist.-

The remainder of the FSV Technical Specifications was reviewed with only minor differences noted in such areas as: .

. Format (including page heading).

2. Two' sided copies versus one sided copies- I

3. Placement / existence of revision markers.

.c 4. Latest Amendments (58 and 59) not in NRC copy.

5. Page numbering discrepancy (FSV copy, Section 4.2).

Gased on the nature of the differences noted in the review, it is concluded that no safety concerns or safety issues exist since there are no discrepancies in technical content.

PSC's plan to implement the Upgraded Technical Specifications during i' startup following the 4th refueling will ensure consistency between r the NRC and PSC copies of the Technical Specifications. (At present, ~

the startup is planned for mid-June, 1989,) To avoid recurrence of the identified differences, PSC will work closely with the NRC to 1

ensure that pages unaffected by future amendment proposals retain ,

their existing format.

For NRC reference, attached to this letter is page 4.6-1 of Amendment 34 (Reference 1). Also, attached are pages 4.6-1 through 4.6-9 of  :

PSC's re-formatted Technical Specifications. PSC believes this should clarify the discrepancies and permit completion of NRC's  ;

review of the amendment request submitted in Refr ence 2. ,

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P-88232 July 1, 1988 If you have any questions or comments concerning the enclosed information, please contact Mr. M. H. Holmes at (303) 480-6960.

Very truly yours, ,

R. O. Williams, Jr.

Vice President, Nuclear Operations R0W/DLF/ lmb Attachments cc: Regional Administrator, Region IV ATTN: Mr. T. F. Westerman, Chief Projects Section B Mr. Robert Farrell Senior Resident Inspector Fort St. Vrain Albert J. Hazle Colorado Department of Health 1

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b PAGE 4.6-1 0F AMENDMENT 34

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. . 4.6-1 4.6 AUXILIARY El.ECTRIC POWER SYSTEM - LIMITING CONDITIONS FOR OPERATION __

Applicability Applies to the minimum operable equipment supplying electric power to the plant auxiliaries.

Objective .

To ensure that the capability of supplying electric power to the plant auxiliaries is maintained by defining the minimum operable equipment.

Soecification LCO 4.6.1 - Auxiliary Electric Svstem. Limitino Conditions for Operation The :eactor shall not be operated at power unless the following conditions are satisfied:

l a)* Both the Unit Auxiliary and Reserve Auxiliary Transformers are operable.

The Unit Auxiliary Transformer o,r the Reserve Auxiliary Trans-fomer can be made inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided both diesel generator sets (two engines and associated generator per set) are started imediately prior to taking the affected transfomer 4

out of service to verify their operability, are shut down ard their controls left in the automatic mode and all three 480 volt a-c essential buses are operable.

b) 4160 V a-c Bus 1B must be operable.

4160 V a-c Bus 1B may be made inoperable for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> providing the 480 V a-c essential buses and both diesel generator sets are operable, operability to be proved as in a) above.

• The requirements of LCO 4.6.1 a) that both the Unit Auxiliary and Reserve Auxiliary Transfomers be operable are waived for the Unit Auxiliary Transfomer for the period from March 10, 1983, thrtugh midnight March 20, 1983, provided both diesel generator sets are verified operable end returned to the automatic mode at least once each 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and reactor power is maintained at less than 30% rated power.

Amendment No. 34 1

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1 PAGES 4.6-1 THROUGH 4.6-9 0F PSC's RE-FORMATTED TECHNICAL SPECIFICATIONS

Fort St. Vrain #1 l Technical Specifications Amendment #34 - 3/21/83 i Page 4.6-1  !

4.6 AUXILIARY ELECTRIC POWER SYSTEM - LIMITING CONDITIONS FOR OPERATION Applicability Applies to the minimum operable equipment supplying electric power to the plant auxiliaries. .

Objective To ensure that the capability of supplying electric power to the plant auxiliaries is maintained by defining the minimum operable equipment.

Specification LCO 4.6.1 - Auxiliary Electric System. -

Limitino' Conditions for Operation The reactor shall not be operated at power unless the following conditions are satisfied:

I a) *Both the Unit Auxiliary and Reserve Auxilia ry Transformers are operable.

The Unit Auxiliary Tran sformer or the Reserve Auxiliary Transformer can be made inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided both diesel generator sets (two engines and associated generator per set) are started immediately prior to taking the affected transformer "See Page 4.6-6 i

Fort 5%. Vrain #1 Technical Specifications Amendment #34 - 3/21/83 Page 4.6-2 ,

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out of service to verify their operability, are shut down and their controls left in the automatic mode and all three 480 volt a-c essential buses are operable.

b) 4160 V a-c Bus 1B must be operable.

4160 V a-c Bus IB may be made inoperable for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> providing the 480 V a-c Essential busas- and both diesel generator sets are operable, cperability to be proved as in a) above.

c) The auxiliary power 480 V a-c essential buses 1A,1B, and 1C must be operable.

Each essential bus may be inoperable for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> provided the follcwing conditions are satisfied:

1) Only one 480 V essential bus is inoperable at a time.

2) 4160 V a-c bus IB is operable.

3) Engine Driven Fire Pump 13 operable.

4) Emergency Cor.densate Header is operable.

5) The diesel generator set (s) supplying the remaining operable 480 V a-c essential buses are operable.

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Fort St. Vrain #1 Technical Specifications Amendment #34 - 3/21/83 Page 4.6-3

6) All equipment supplied by the operable essential buses, associated with Safe Shutdown Cooling must be operable,

7) Reactor building exhaust fans supplied from the operable essential buses must be operable.

d)- Both the Jiesel generator sets are operable, including the following:

1) One fuel oil transfer pump from the diesel fuel oil storage tank to the diesel fuel oil day tanks.

2) One starting air compressor and receiver per diesel generator set.

3) Associated automatic load shedding, load programming, and auto diesel-generator set starting equipment. ,

4) 325 gallons of fuel in each day tank.

One diesel generator set may be inoperable for up to 7 days (total for both) during any month provided the operability of the other diesel-generator set is demonstrated immediately as in a) above and all essential buses are operable.

e) The two station batteries and their associated D.C.

buses and battery chargers are oper ble. One battery ,

Fort St. Vrain #1 1 Technical Specifications l Amendment #34 - 3/21/83 l Page 4.0-4  ;

charger or battery may be inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided conditions 1 through 4 below are satisfied.

1) The other station battery and its associated battery charger and both D.C. buses are operable.

2) The D.C. bus tie breaker is closed. .

3) Both diesel generators and their associated ,

essential 480v buses are operable.

4) The PPS battery and battery charger / inverter are operable.

A battery and battery charger- disconnected from a D.C.

bus to overcharge the battery is not considercd inoperable if the overcharge period does not exceed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, provided conditions 1) through 4) above are met.

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One D.C. bus may be inoperable for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> provided the following conditions are satisfied:

1) The station battery and the associated battery charger of the operable D.C. bus are opetab 1.

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2) Instrument power inverter supplied from the operable D.C. bus is operable.

3) Both diesel generators and their associated 480v essential buses are operable.

Fort St. Vrain #1 Technical Specifications Amencment #34 - 3/21/83 Page 4.6-5

4) The FPS battery and battery charger / inverter are operable.

5) Instrument bus No. 3 is supplied from the 480v essential bus associated with the out-of-servica D.C. bus.

f) The PPS batte ry charger / inverter and both the instrument inverters are operable. One inverter may be inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided the following conoitions are satisfied.

1) 480v essential buses IA and IC are operable.

2) Both diesel generator sets are operable.

3) The PPS or instrument bus associated with the out-of-service inverter is energized from its backup source.

g) A minimum of 20,000 gallons of fuel in underground storage. Upon reaching this minimum quantity, the auxiliary boiler shall be shut down.

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h) At least one Boiler Fuel Oil Pump operable between the auxiliary boiler fuel supply and the diesel fuel oil day tanks.

Both Boiler Fuel Oil Pumps 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 /> if at least 5,500 gallons are in the diesel oil storage tank and both fuel oil transfer pumps

For% SS. Vrain #8 Technical Specifications i Amendment #34 - 3/21/83  :

Page 4.6-6 between the diesel oil storage tank and the day tanks are operabie.

l "The requirements t' LCO 4.6.1 a) that both the Unit l Auxiliary and Reserve Auxiliary Transformers be I operable are waived for the Unit Auxiliary l Transformer for the period from March 10, 1983, l through midnight March 20, 1281, provided both diesel l generator sets are verified operable and returned 'to l the automatic mode at least once each 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and l reactor power is maintained at less than 30% rated l power.

Basis for Specification LCO 4.6.1 The objective of this specification is to assure that an adequate source of electrical power is available to operate the plant during normal operation, for cooling during shutdown, and for operation of engineered safeguards in emergency situations. There are three sources of power available for shutdown: unit auxiliary transfo rme r, reserve auxiliary transformer, and the standby diesel generator sets.

In the normal operating mode, the unit auxiliary transformer is in operation, reserve auxiliary transformer

Fort St. Vrain 01 Technical Specifications Amendment #34 '3/21/83 Page 4.6-7 i

l is energi:ed and the standby generator sets are operable.

(FSAR Section 8.2.3.3.)

The main turbine generator can be used as a source of auxiliary power in the event that outside electrical power is lost.

In the event of loss of all outside power and a turbine-generator trip, the diesel generator sets would come on automatically to provide the required energy necessary to safely shut down the plant.

In the event of the loss of the Reserve Auxiliary Transformer when the main turbine generator is out of service, links in the bus between the main turbine-generator and the rcain. power transformer can be removed, allowing the main power transformer and unit auxiliary transformer to be returned to service.

The essential 480v power source is supplied from three separate buses, any two of which can supply adequate power to shut the plant down. Under accident conditions, if the normal supply of power to these three essential buses should fail, the diesel generator sets would come on and energize them. Bus load shedding, breaker closing, and load sequencing on to the diesel generator sets is handled automatically.

. ForS SS. Vrain #1 Technical Specifications Amendment #34 - 3/21/83 Page 4.6-8 The station batteries supply power for-the instrument power inverters, protective devices and equipment operational control. During normal operation, d-c power is supplied by a-c to d-c rectifiers which also keep the batteries fully charged. (FSAR Section 8.2.2.4.)

Backup electric power for the non-interruptible a-c instrument loads is provided by bus ties from Instrument Bus No. 3 to Instrument Buses 1 and 2 which are normally fed by the two Instrument power Inverters. Bus No. 3 receives its power from redundant instrument transformers which are supplied from the essential 480 volt switchgear.

(FSAR Section 8.'2.2.3.)

A redundant source of electric power for the d-c instrument loads is available from a bus tie between the two d-c buses which allows one battery or a-c to d-c rectifier to supply both buses.

l These backups and redundancies pe rmit the temporary removal from service of an instrument power inverter, a battery, a d-c bus or an a-c to d-c rectifie".

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A diesel fuel storage capacity of 50,000 gallons is provided. A supply of 20,000 gallons of diesel fuel is adequate to provide for operation of the standby generators for at least seven days under required leading conditions. This allows adequate time to obtain

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Fort St. Vrain #1 l Technical Specifications 1 Amendment #34 3/21/83 Page 4.6-9 additional fuel and to make provisions to restore the standby source of power into the station.

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