ML13331A786

Proposed Tech Spec Changes Re Emergency Diesel Generator Testing

ML13331A786
Person / Time
Site:	San Onofre
Issue date:	02/14/1985
From:	SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML13331A784	List: ML13331A783 ML13331A785 ML13331A786
References
TAC-55900, TAC-60370, NUDOCS 8502190350
Download: ML13331A786 (13)

Text

ENCLOSURE I 1.0 DEFINITIONS The defined terms of this section appear in capitalized type and are applicable throughout these Technical Specifications.

ACTION 1.1 ACTION shall be that part of a Specification which prescribes remedial measures required under designated conditions.

CHANNEL CALIBRATION 1.2 A CHANNEL CALIBRATION shall be the adjustment, as necessary, of the-channel such that it resoonds with the required range and accuracy to known values of input.

The CHANNEL CALIBRATION shall encompass the entire channel including the sensors and alarm, interlock and/or trip 83 functions and may be performed by any series of sequential, 11/2/84 overlapping, or total channel steps such that the entire channel is calibrated.

CHANNEL CHECK 1.3 A CHANNEL CHECK shall be the qualitative assessment of channel behavior during operation by observation.

This determination shall include, where possible, comparison of the channel indication and/or status with other indications and/or status derived from independent instrument channels measuring the same parameter..

CHANNEL TEST 1.4 A CHANNEL TEST shall be the injection of a simulated signal into the channel to verify its proper response including, where applicable, alarm and/or trip initiating action.

CONTAINMENT INTEGRITY 1.5 CONTAINMENT INTEGRITY shall exist when:

(1)

All non-automatic containment isolation valves (or blind flanges) are closed.

(2)

The equipment door is properly closed.

(3)

At least one door in each personnel air lock is properly closed.

(4)

All automatic containment isolation valves are operable.

8502190350 850214 PDR ADOCK 05000206 P

PDR 1-1 Revised:

11/16/84

CORE XLTERATION 1.6 CORE ALTERATION shall be the movement or manioulation of any 93 component within the reactor-pressure vessel with the vessel head 11/2/84 removed and fuel in the vessel.

Suspension of CORE ALTERATION shall not preclude comoletion of movement of a component to a safe conservative position.

CORRELATION CHECK 1.7 A CORRELATION CHECK shall be an engineering analysis of an incore 17 flux map wherein at least one ooint along the incore versus excore 12/20/7 correlation data plot is obtained.

CORRELATION VERIFICATION 83 1.8 A CORRELATION VERIFICATION shall be the engineering analysis of 11/2/84 incore flux maps wherein multiple points along the incore versus excore 17 correlation data plot are obtained.

12/20/7 DOSE EQUIVALENT 1-131 1.9 DOSE EQUIVALENT 1-131 shall be that concentration of 1-131 (microcurie/gram) which alone would produce the same thyroid dose as the quantity and isotopic mixture of 1-131, 1-132, 1-133, 1-134, and 83 1-135 actually present. The thyroid dose conversion factors used for 11/2/84 this calculation shall be those listed in Table III of TID-14844, "Calculation of Distance Factors for Power and Test Reactor Sites."

FIRE SUPPRESSION WATER SYSTEM 1.10 A FIRE SUPPRESSION WATER SYSTEM shall consist of a water source(s), pump(s), and distribution piping with associated isolation 40 valves (i.e., system header, hose standpipe and spray header isolation 3/8/78 valves).

FREQUENCY NOTATION 1.11 The FREQUENCY NOTATION specified for the performance of 83 Surveillance Requirements shall corresoond to the intervals defined in 11/2/84 Table 1.1.

GASEOUS RADWASTE TREATMENT SYSTEM 1.12 A GASEOUS RADWASTE TREATMENT SYSTEM is any system designed and installed to reduce radioactive gaseous effluents by collecting primary coolant system offgases from the primary system and providing for delay or holdup for the purpose of reducing the total radioactivity prior to release to the environment.

1-2 Revised:

11/16/84

• e 0

MEM4BER(S)

OF THE PUBLIC

1. 13 MEMBER(S)

OF THE PUBLIC shall include all individuals who by virtue of their occupational status have no formal association with the plant. This category shall include nonemployees of the licensee who are permitted to use portions of the site for recreational, occupa tional, or purposes not associated with plant functions.

This category shall not include nonemployees such as vending machine servicemen or postmen who, as part of their formal job function, occasionally enter an area that is controlled by the licensee for purposes of protection of individuals from exposure to radiation and radioactive materials.

OFFSITE DOSE CALCLUATION MANUAL (ODCM) 1.14 An OFFSITE DOSE CALCULATION MANUAL (ODCM) shall contain the current methodology and parameters used in the calculation of offsite doses due to radioactive gaseous and liquid effluents, in the calculation of gaseous and liquid effluent monitoring alarm/trip setpoints, and in the conduct of the environmental radiological monitoring program.

OPERABLE -

OPERABILITY 1.15 A system, subsystem, train, component or device shall be OPERABLE or have OPERABILITY when it is capable of performing its specified 83 function(s), and when all necessary attendant instrumentation, 11/2/81 controls, electrical power, cooling-or seal water, lubrication or other auxiliary equipment that are required for -the system, subsystem, train, component, or device to perform its function(s) are also capable of performing their related support function(s).

OPERATIONAL MODE -

MODE 1.16 An OPERATIONAL MODE (i.e., MODE) shall correspond to any one 61 inclusive combination of core reactivity condition, power level, and 6/11/81 average reactor coolant temperature specified in Table 1.2..

PROCESS CONTROL PROGRAM 1.17 The PROCESS CONTROL PROGRAM shall contain the current formula, sampling, analysis, and formulation determination by which SOLIDIFI CATION of radioactive wastes from liquid systems is assured.

PURGE-PURGING 1.18 PURGE or PURGING is the controlled process of discharging air or 83 gas from a confinement to maintain temperature, pressure, humidity, 11/2/8L concentration or other operating condition, in such a manner that replacement air or gas is required to purify the confinement.

1-3 Revised:

11/16/84

RATED THERMAL POWER 1.19 RATED THERMAL PO ER shall be a total reactor core heat transfer rate to the reactor coolant of 1347 Mwt.

83 REPORTABLE EVENT 11/2/8 1.20 A REPORTABLE EVENT shall be any of those conditions specified in Section 50.73 to 10 CYR Part 50.

RESIDUAL HEAT REMOVAL (RHR)

TRAIN 1.21 An RHR TRAIN shall be a train of components that includes:

one RR pump aligned with one RHR heat exchanger; one component cooling water pump aligned with the same RHR heat exchanger and with one 80 component cooling water heat exchanger; and one salt water pump aligned 10/4/8' with the same component cooling water heat exchanger.

SHUTDOWN MARGIN 1.22 SHUTDOWN MARGIN shall be the instantaneous.amount of reactivity by which the reactor is subcritical or would be subcritical from its 83 present condition assuming all rod cluster assemblies (shutdown and 11/2/8Z control) are fully inserted except for the single rod cluster assembly of highest reactivity worth which is assumed to be fully withdrawn.

SITE BOUNDARY 1.23 The SITE BOUNDARY shall be that line beyond which the land is not owned, leased, or otherwise controlled by the licensee%

SOLIDIFICATION 1.24 SOLIDIFICATION shall be the conversion of wet wastes into a form that meets shipping and burial ground requirements.

SOURCE CHECK 1.25 A SOURCE CHECK is the qualitative assessment of a channel 86 response when the channel sensor is exposed to a radioactive source.

1/1/85 STAGGERED TEST BASIS 1.26 A STAGGERED TEST BASIS shall consist of:

83 11/2/84

a.

A test schedule for n systems, subsystems, trains, or other designated components.obtained by dividing the specified test interval into n equal subintervals,

b.

The testing of one system, subsystem, train, or other designated component at the beginning of each subinterval.

1-4 Revised 1/1/85

4.4 EMERGENCY ?OWER SYSTEM PERIODIC TESTING APPLICA3ILITY:

Applies to testing of the Emergency Power System.

82 11/7/84 OBJECTIVE:

To verify that the Emergency Power System will respond promptly and properly when required.

SPECIFICATION:

k. The required offsite circuits shall be determined 84 OPERABLE at least once per 7 days by verifying correct 11/14/84 breaker alignments and power availability.

B. The required diesel generators shall be demonstrated OPERABLE:

1. At least once per 31 days on a STAGGERED TEST BASIS by:

a. Verifying the diesel starts from ambient conditions,

b. Verifying a fuel transfer pump can be started and transfers fuel from the storage system to the day tank, 34 4/1/77

c. Verifying the diesel generator is synchronized and running at >4422 kW for >60 minutes,

d.

Verifying the diesel generator is aligned to provide standby power to the associated emergency buses,

e. Verifying the day tank contains a mir4mum of 290 gallons of fuel, and

f. Verifying the fuel storage tank contains a minimum of 37,500 gallons of fuel.

2. At least once per 3 months by verifying that a sample.of diesel fuel from the required fuel 84 storage tanks is within the acceptable limits as 11/14/84 specified by the supplier when checked for viscosity, water and sediment.

C. AC Distribution

1. The required buses specified in Technical Specification 3.7, Auxiliary Electrical Supply, shall be determined OPERABLE and energized from AC 34 sources other than the diesel generators with tie 4/1/77 breakers open between redundant buses at least once per 7 days by verifying correct breaker alignment and power availability.

4-51 Revised:

11/28/84

D. The required DC power sources specified in Technical 84 Specification 3.7 shall meet the following:

11/14/84

1. Each DC Bus train shall be determined OPERABLE and energized at least once per 7 days by verifying 34 correct breaker alignment and power availability.

4/1/77

2. Each 125 volt battery bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:

(1) The parameters in Table 4.4-1 meet the Category A limits, and (2) The total battery terminal voltage is greater than or equal to 129 volts on float charge.

b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above

.84 150 volts, by verifying that:

11/14/84 (1) The parameters in Table 4.4-1 meet the Category 8 limits, (2) There is no visible corrosion at either terminals or connectors, or the connection resistance of these items is less than 150 x 10 ohms, and.

(3) The average electrolyte temperature of ten connected cells is above 61 0F for battery banks associated with DC Bus No.

I and DC Bus No. 2 and above 480F for the UPS battery bank.

c. At least once per 18 months byverifying that:

(1) The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration, 34 (2) The cell-to-cell and terminal connections 4/1/77 are clean, tight and coated with anti corrosion material, (3) The resistance of each cell-to-cell and 84 terminal con ection is less than or equal 11/14/84 to 150 x 10

ohms, 4-52 Revised:

11/28/84

(4)

The battery charger for 125 volt DC Bus No. 1 will suoply at least 800 amps DC at 130 volts DC for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, (5) The battery charger for 125 volt DC Bus No. 2 will supply at least 45 amps DC at 130 volts DC for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, and (6) The battery charger for the UPS will supply at least 10 amps AC at 480 volts AC for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> as measured at the output of the UPS inverter.

d.

At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual or simulated emergency loads for the design duty cycle when the battery is subjected to a battery service test.

e.

At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 80% of the manufacturers rating when subjected to a performance discharge,test. Once per 60 month interval, this perfor~mance discharge test may be performed in lieu of the battery service test required by Surveillance Requirement 84 4.4.D.2.d.

11/14/84

f.

Annual performance discharge tests of battery capacity shall be given to any battery that shows signs of degradation or has reached 85% of the service life expected for the application.

Degradation is indicated when the batteky capacity drops more than 10% of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.

E. The required Safety lnjection System Load Sequencers shall be demonstrated OPERABLE at least once per 31 days on a staggered test basis, by simulating'SISLOP*

conditions and verifying that the resulting interval between each load group is within + 10% of its design interval.

F. The required diesel generators and the Safety Injection System Load Sequencers shall be demonstrated OPERABLE at least once per 18 months during shutdown by:

1. Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturers recommendations for this class of standby service.

4-53 Revised:

11/28/84

2. Simulating SISLOP *,

and:

a.

Verifying operation of circuitry which locks out non-critical equipment,

b.

Verifying the diesel starts from ambient condition on the auto-start signal, energizes the emergency buses with permanently connected loads and the auto connected emergency loads through the load sequencer (with the exception of the feedwater, safety injection, charging and refueling water pumps whose respective breakers 84 may be racked-out to the test position) and 11/14/34 operates for >5 minutes while its generator is loaded with the emergency loads,

c.

Verifying that on the safety injection actuation signal, all diesel generator trips, except engine overspeed and generator differential, are automatically bypassed, and

d.

Verifying the diesel generator operates for >60 minutes while loaded to >4422 kW.

3. Verifying the generator capability to reject a load of 2611 kW without tripping.

• SISLOP is the signal generated by coincident loss of offsite power (loss of voltage on Buses IC and 2C) and demand for safety injectiom.

4-54 Revised:

11/28/84

TABLE 4.4-1 BATTERY SURVEILLANCE REQUIREMENTS CATEGORY A~l)

CATEGORY B(2 )

Parameter Limits for each Limits for each Allowable (3) designated pilot connected cell value for each cell connected cell Electrolyte

>Minimum level

>Minimum level Above top of Level indication mark, indication mark, plates, and and <1/4" above and <1/4" above not overflowing maximum level maximum level indication mark indication mark Float

>2.13 volts

>2.13 volts (c)

>2.07 volts Voltage

>1. 200(b)

>1.195 Not more than

.020 below the 84 average of all 11/14/84 connected cells Specific ()

Gravity Average of all Average of all connected cells connec cells

>1.205

>!.195 (a) Corrected for electrolyte temperature and level.

(b) Or battery charging current is less than 2 amps when on charge.

(c) Corrected for average electrolyte temperature in accordance-with IEEE STD 450-1980.

(1) For any Category A parameter(s) outside the limit(s) shown, the battery may be considered OPERABLE provided that within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> all the Category B measurements are taken and found to be within their allowable values, and provided all Category A and B parameter(s) are restored to within limits within the next 6 days.

(2) For any Category B parameter(s) outside the limit(s) shown, the battery may be considered OPERABLE provided that the Category B parameter(s) are within their allowable values and provided the Category B parameter(s) are restored to within limits within 7 days.

(3) Any Category B parameter not within its allowable value indicates an inoperable battery.

4-55 Revised:

11/28/84

Basis:

The normal plant Emergency Power System is nor "ly in continuous operation, and periodically tested.

The tests specified above will be completed without any preliminary preparation or repairs which might influence the results of the test.

34 4/1/77 The tests will demonstrate that components which are not normally required will respond properly when required.

The surveillance requirements for demonstrating the OPERABILITY of the station batteries are based on the recommendations of Regulatory Guide 1.129, "Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations."

Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltage on float charge, connection resistance values and the performance of batter/ service and discharge tests ensure the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity-at that time with the rated capacity.

Table 4.4-1 specifies the normal limits for each designated pilot cell and each connected cell for electrolyte level, float voltage and specific gravity.

The Limits for the designated pilot cells.float viltage and specific gravity, greater than 2.13 volts and.020 below normal full charge specific gravity or a battery charger current that has stabilized at a low value, is characteristic of a charged cell with adequate capacity.

The normal limits for each connected cell for float 11/14/84 voltage and specific gravity, greater than 2.13 'Volts and not more than.020 below normal full charge specific gravity with an average specific gravity of all the connected cells not more than.010 below normal full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operating with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.4-1 is permitted for up to 7 days.

During this 7 day period:

(1) the allowable values for electrolyte level ensures no physical damage to the Dlates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than.020 below normal full charge specific gravity, ensures that the decrease in rating will be 4-56 Revised:

11/28/84

less than the safety margin provided in sizing; (3) the allowable value for an individual cell's specific gravity, ensures that an individual cell's specific gravity will 84 not be more than.040 below normal full charge specific 11/14/84 gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2..07 volts, ensures the battery's capability to perform its design function.

Reference:

(1) Supplement No. I to Final Engineering Report and Safety Analysis, Section 3, Questions 6 and 8.

4-57 Revised:

11/28/84

ENCLOSURE II I.

The following new definitions will be added to Section 1.0, DEFINITIONS, of the Appendix A Technical Specifications in the order indicated below and the remaining definitions will then be renumbered as necessary:

FAST START 1.10 A FAST START shall be an automatic or manual start of an emergency diesel generator in which the steady state voltage and frequency is achieved within 10 seconds.

SLOW START 1.25 A SLOW START shall be an automatic or manual start of an emergency diesel generator in which fuel injection restrictions are employed which are intended to avoid the rapid acceleration necessary to achieve rated operating conditions within 10 seconds.

II. Technical Specification 4.4.8.1 will be changed to read as follows:

1.

At least once per 31 days on a STAGGERED TEST BASIS by:

a. Verifying the diesel performs a SLOW START from standby conditions,

b. Verifying a fuel transfer pump can be started and transfers fuel from the storage system to the day tank,

c.

Verifying the diesel generator is synchronized and running at 4500 kW

• 5% for > 60 minutes,

d. Verifying the diesel generator is aligned to provide standby power to the associated emergency buses,

e. Verifying the day tank contains a minimum of 290 gallons of fuel, and

f. Verifying the fuel storage tank contains a minimum of 37,500 gallons of fuel.

III.

Technical Specification 4.4.F.2 will be changed to read as follows:

2. Simulating SISLOP*, and:

a. Verifying operation of circuitry which locks out non-critical equipment, SISLOP is the signal generated by coincident loss of offsite power (loss of voltage on Buses 1C and 2C) and demand for safety injection.

-2

b. Verifying the diesel performs a FAST START from standby conditions, energizes the emergency buses with permanently connected loads and the auto connected emergency loads*

through the load sequencer (with the exception of the feedwater, safety injection, charging and/or refueling water pumps whose respective breakers may be racked-out to the test position) and operates for > 5 minutes while its generator is loaded with the emergency loads,

c. Verifying that on the safety injection actuation signal, all diesel generator trips, except engine overspeed and generator differential, are automatically bypassed.

IV. The "Basis" to Section 4.4 of Appendix A will be revised by inserting a new paragraph after the third paragraph and adding a reference at the end of the "Basis" as shown below.

The normal plant Emergency Power System is normally in continuous operation, and periodically tested.( 1 )

The tests specified above will be completed without any preliminary repairs which might influence the results of the test except as required to perform the SLOW START test set forth in T.S. 4.4.B.l(a).

The tests will demonstrate that components which are not normally required will respond properly when required.

SLOW STARTS are specified for the monthly surveillances in order to reduce the cumulative fatigue damage to the engine crankshafts to levels below the threshold of detection under a program of augmented inservice inspection. Test loading of the generator to 4500 kW corresponds to an approximate engine brake mean effective pressure of 116 psig (2).

References:

1. Supplement No. 1 to Final Engineering Report and Safety Analysis, Section 3, Questions 6 and 8

2. Transamerica DeLaval Instruction Manual, Appendix IX, test curve dated 8/20/76 The sum of all loads on the engine shall not exceed 4500 kW + 5%.

IAA:3152F