ML20043G762

Proposed Tech Specs Re Performance Discharge Testing of 125-volt Dc Station Battery & LPCI Motor Operated Valve Independent Power Supplies

ML20043G762
Person / Time
Site:	FitzPatrick
Issue date:	06/11/1990
From:	POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:
Shared Package
ML20043G757	List: ML20043G756 ML20043G759 ML20043G762
References
NUDOCS 9006210101
Download: ML20043G762 (11)

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I ATTACHMENT I 1

PROPOSED TECHNICAL SPECIFICATION CHANGES REGARDING PERFORMANCE DISCH ARGE TESTING OF THE 125 VDC STAW5N TATTUiVIR5Trik LPCI MOV INDEPENDENT POWER SUPPUES l

(JPTS-89 033) 1 l

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New York Power Authority JAMES A. FITZPATRICK NUCLEAR POWER PLANT Docket No. 50-333 DPR-59

.9006210101-900611 i,

PDR ADOCK 05000333' ll

.P PNUjg 1

JAFNPP .

4.9 (cont'd) -

3.9 (cont'd)

3. From and after the time that both batteries are made or

3. h M pa% @ M to mW 18 ne h found to be inoperable for any reason, the reactor shall be Mats We M M @M to a serwce M in a cold condition within 24 hrs.

cy&)tW.

4. Once each 5-year interval the stabon batteries shall be subjected to a performance discharge (capacdy) test. .' l S. Each battery charger shall be visually *mspected weeldy and a performance test conducted each operating cycle -

not to exceed 18 months.

6. Once/ month: open the battery charger output breakers one at a time and observe performance for proper operation.

Amendment No. [

222

JAFNPP- .

3.9 (cont'd) 4.9 (cont'd) .

F. LPCI MOVIndependent Power Supplies F. t_PCI MOV Independent Power Supplies

1. Every week the specific gravity, voltage and temperature of each pilot ceH, and overan battery voltage shall be measured and chargers and inverters snall be wsually inspected.

2. Every three irciti6 the following rneasurements shall be made:

a. Voltage of each cell to the nearest of 0.01v:

b. Specific gravity of each cell; c.

Temperature of every fifth cell.

3.

Once battery each shall be@ dis 6g to subjected cycle not (duty a serwce to exceed 18 months th cycle) test.

4. Once each 5-year interval the battery shall be subjected to ,

a performance discharge (capacity) test. l

5. Each battery charger and inverter shall be visually inspected weeldy and a paiwirsce test conducted each operating cycle not to exceed 18 iruiti6.

6. Once/ month: open the battery charger output breakers one at a time and observe peihT&.ce for proper operation.

L Amendment No.

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JAFNPP .

4.9 BASES (cont'd) -

D. Battery System Measurements and electrical tests are conducted at specified Intervals to provide irxhcation of cell condition and to determine the discharge capability of the batteries. Performance and service tests - are conducted in accordance with the recommendations of IEEE 450-1987. .

E. LPCI MOVIn& pendent Power Supply Measurement and electrical tests are conducted at si&I+3 intervals to provide indication of cell condition, to determine the '

discharge capability of the battery. Performance and service tests are conducted in accordance with the reevinnwidations ,

of IEEE 450-1987.

F. Reactor Protection Power Supplies

Functional tests of the electncal protection esserriAies are conducted once each six (6) rreitis utilizing ~a built-in test device and once per operating cycle by perfvining an i instrument calibration which verifies operation within the limits of Section 4.9.G.

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Amendment No. [,7[,1[

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PAGES MARKED TO SHOW ACTUAL CHANGES I

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1 New York Power Authority .

JAMES A. FITZPATRICK NUCLEAR POWER PLANT Docket No. 50-333 DPR 59 4

f_)? () .s g..

3.9 (cont'd) JAPMP 4.9 (cont'd) [ )

3. Frau and after the time that 3. Once each o rating cycle not to .

both tritteries are ande or exceed la nths the station ha found to le inoperable for any - t 1 reason, the reactor shall be in asrvicejt t.a; / .T;.m  ;.. N . l MA ' '?" ("z tte d c;). '

a cold condition within 24 hrs. -

4. Once endt 5-year interval t1e ,

station tetteries shall be um sub-_ w ,7c a r _,.m t, C f~ ^.O.d . .;d 1.. M . O " U _

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5. Eadt battery chartyrr shall be visually ingmeted seAly mi a  !

perfoiwnnou test oanductal cadi l

operating cycle not to excee<l .,

' ' 18 months.

I 6. Once/ month: open the battery charger output breakers one at a time and observe performance for

' proper operation.  !

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Amendment 41 222

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J'WP 3.9 (mnt'd) 4.9 (cont'd)

P. Irct KW Independent Power Supplies F. IFCI MCW Iruleperuht her Supplies '

1. Every weelt the specific gravity, voltage and tesugeraturei of each pilot cell,and overall battery voltags diall be sensured arut dergers arut inverters siesti be visually Jerspected.

2. Every Quee ponths the following measuremients si:all im sande:

a. Voltage of eadi cell to the nearest of 0.01 v:

b. f4ecific gravity of each mil;

c. Temperature of every fif th mil. -

3. Once each operating cle NM not to ex)ceed 18 months the batt shall Intsu -

ec ed to a ser ice stes AT"..a "m rey. unie I .IM 'Ltu. "o).

4. Once eads 5-year interval tie lettery 11 1m 7d=,

sediergegtesCL::-.-:La,.  :

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5. Each batteryThh and inverter shall be visually inspected weekly and a performance test conducted each operating cycle not to exceed'18 months.

6. Once/sonth: Open the hattery charger output breakers one at a time and observe performance for proper operatio:1.

~ Aneminent 41 222a m

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JAFNPP .

i 4S BASES (cont'd) i D. Ba'tery System Measurements and 6;ec^uicie tests are conducted at specified intervals to provide indicahon of cell cu Gani and to determine the discharge cacatwTity of the batteneg[Fabnw.ce and gm service tests as conducted in Ems.sw.ce with the recommendabons ofIEEE 450-1987y E. LPCI MOV Indepeixkint Power Supply Measurement and electncal tests are conducted at specified intervals to provide indicabon of cell condition, to determine the discharge capatWity of the batte[ Performance and service ests are conducted in accordance with the recuinrwidations MM of IEEE 450-1987[.-

F. Reactor erotection Power Supplies Functional tests of the electrical protection assemblies are conducteo once each six (6) incnitiis utilizing a built-in test device and once per operating cycle by pubning an instrument calibration wtuch verifies operation within the limits of Section 4S.G.

s Amendment No. 30,76,134 226

ATTACHMENT 11 SAFETY EVALUATION FOR PAOPOSED TECHNICAL SPECIFICATION CH ANGES REGARDING PERFORMANCE 615DHARGE TESTING OF TITE 125VbT&TAYl5HTATftWr AND THE LPCI MOV INDEPlNDENT N (JPTS 84033) i l

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New York Power Authority JAMES A. FITZPATRICK NUCLEAR POWER PLANT Docket No. 50-333 DPR 59

1 Attachment 11 SAFETY EVALUATION Page 1 of 4

1. DESCRIPTION OF THE PROPOSED CHANGES The proposed changes to the James A. FitzPatrick Technical Specifications revise Surveillance Requltoments 4.9.E, ' Station Batteries,' and 4.9.F, *LPCI MOV Independent Power Supplies,* on pages 222 and 222a and Bases 4.9.D,

• Battery System," and 4.9.E, *LPCI MOV Indepondent Power Supply,' on page 226. The changes are as follows:

1. Surveillance Requirement 4.9.E.3 on page 222 >

Delete the words, *as defined in Reg. Guide 1.129 (Batteries)

• Surveillance Requirement  !

4.9.E.3 now reads, *Once each operating cycle not to exceed 18 months the station batteries j shall be subjected to a service (duty cycle) test.'

2. Survoittance Requiremont 4.9.E.4 on page 222 1

Delete the words, 'as determined in Reg. Guide 1.129 (Batteries)." Surveillance Roquirement  !

4.9.E.4 now roads, *Once each 5 year interval the station batteries shall be subjected to a i performance discharge (capecity) test."

3. Surveillanco Requiremont 4.9.F.3 on page 222a )

l Doloto the words, 'as defined in Reg. Guide 1.129 (Batteries).* Surveillance Requiremont 1 4.9.F.3 now reads, "Or,ce each operating cycle not to exceed 18 months the battery shall be subjected to a service (duty cycle) test.' ,

4. Surveillance Requiremont 4.9.F.4 on page 222a ,

Delete the words, *as defined in Reg. Guide 1.129 (Batteries).* Surveillance Roquirement 4.9.F.4 now reads, "Once each 5-year interval the battery shall be subjected to a performanco discharps (capacity) test.'

5. Basos 4.9.D and 4.9.E on page 226 Add the following sentonce to the end of the paragraph for each Bases, *Porformance and service tests are conducted in accordance with the recommendations of IEEE 4501987.*

ll. PURPOSE OF THE PROPOSED CHANGES The purpose of the proposed changes is to revise the Technical Specifications, in accordance with the Authority's commitment in response to an SSFl team concem (Reference 4, item 4.7.3). These changes make the Technical Specifications for the station batteries and the LPCI MOV indopondent

, power supply batteries consistent with actual plant practice and IEEE 4501987. A battery equalizing charge will be completed more than 3 days and less than 7 days prior to conducting the

. performance discharge (capacity) test.

l Surveillance Requirements 4.9.E and 4.9.F require that performanco dischargo (capacity) tests and service (duty cyclo) tests be performed on the station batteries and the LPCI MOV indopondent

power supply batteries in accordance with Regulatory Guido 1.129. Regulatory Guido 1.129 r endorses IEEE 450-1975 which does not allow an equalizing charge to be given to the batteries before conducting these tests. Current plant procedures, however, specify that an equalizing l

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. SAFETY EVALUATION Page 2 of 4 charge be applied to the station batteries more than 3 days and less than 7 days prior to the start of the performance discharge (capacity) test.

The station batteries and LPCI MOV Independent Power Supply Batteries are subjected to two ,

major tests.  ;

1. A service test, also called a duty cycle test, is pedormed at 18 month intervals. The battery is subjected to a duty cycle (load-current versus time profile) which simulates the application, removal, and duration of battery loads during design basis accident conditions. This test is -i performed on the batteries in an *as found* condition (i.e., without any preconditioning) and I demonstrates that the batteries will perform their intended safety function.

2. A performance discharge test, also called a capac!!y test, is porformed at 60 month intervals. i This test measures battery capacity in ampere hours to ensure that the battery moots its t design rating, it is run at a constant current load equal to the manufacture's 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> rating. 1 Test data is used to trend battery aging and to enable personnel to anticipate when i replacement will be necessary. To provide accurate and consistent trend data, the tost is started from a consistent level of battery charge state.

Current plant practice does not require inat an equalizing charge be appfled to the LPCl MOV independent power supply batteries, only to the station batteries. The procedures for the LPCI MOV independent power supply batteries will be revised to require completion of an equalizing charge more than 3 days and less than 7 days prior to the stad of the test. This wil! make the 4 performance discharge (capacity) test' procedures for the two battery systems consistent, j

System Description 125 V DC Power System The station batteries along with the associated chargers, distribution equipment and Interconnecting cabling make up the 125 V DC Power System. The safety objective of the 125 V DC Power System is to pr ovide independent sources of 125 V DC power to all DC loads for normal ,

operating conditions and for safe shutdown of the plant following abnormal operational transients and postulated accidents. The chargers are sized to maintain the batteries at a fully charged state while supplying steady state loads for normal functions. Transient demands, due to emergoncy loads, in excess of charger capacities, are supplied from energy stored in the charged battories.

This stored energy supplies all 125 V DC demands during charger maintenance periods or loss of l AC charger power supply (Reference 1).

System Description LPCI MOV Independent Power Supply System The safety objective of the LPCI MOV independent power supply system is to provide an l independent power source for the operation of three motor operated valves in each of the two L rodundant Residual Heat Removal Low Pressure Coolant injection System loops and two motor operated valves in each of the two reactor water recirculation loops during a loss of offsite power coincident with a design basis LOCA. The LPCI MOV independent power supply system is I

comprised of two separate and independent uninterruptible power supplies, each consisting of a battery, an inverter, a rectifier / charger, a transformer and associated circuit breakers. Each of the two rectifier / chargers normally supplies power to the associated MOV bus through an inverter whl!o maintaining the associated battery at full charge. On a LPCI actuation signal, however, the associated battery will supply power to the MOV bus (Reference 2).

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SAFETY EVALUATION j Page 3 of 4 l

lil. IMPACT OF THE PROPOSED CHANGES i

i The proposed changes are not a significant hazards consideration, as they revise the Technical Specifications to be consistent with actual plant practice and IEEE 4501967.

The proposed changes do not involve the modification of any existing equipment, systems, or components; nor do they relax any administrative controls or limitations imposed on existing plant equipment. The changes do not alter the conclusions of the plant's accident analyses as

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documented in the FSAR or the NRC staff's SER. The procedures for the LPCI MOV Independent i power supply batteries will be revised to require completion of an equalizing charge more than 3  !

! days and less than 7 days prior to the start of the performance discharge (capacity) test. 1 i

IV. EVALUATION OF SIGNIFICANT HAZARDS CONSIDERATION  !

Operation of the James A. RtzPatrick Nuclear Power Plant in accordance with this proposed amendment would not involve a significant hazards consideration, as defined in 10 CFR 50.92, j since the proposed changes would not:

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1. involve a significant increase in the probability or consequences of an accident '

previously evaluated. The proposed changes delete the references to Regulatory Guide 1.129 in Surveillance Requirement. 4.9.E,

• Station Batteries," and 4.9.F, 'LPCI MOV Independent Power Supplies.* Surveillance Requirements 4.9.E and 4.9.F require that performance discharge (capacity) tests and service (duty cycle) tests be performed on the station batteries and the LPCI MOV independent power supply batteries in accordance with Regulatory Guide 1.129. Regulatory Guide 1.129 endorses IEEE 4501975 which does not allow an equalizing charge to be given to the batteries before l-conducting these tests. These changes, which are in accordance with current industry standards (i.e., IEEE 450-1987) allow an equalizing charge to be applied to the batteries prior to performing the 5 year battery performance discharge (capacity) test. In addition, the bases section has been revised to state th6t these tests are being performed in accordance with the recommendations of IEEE 450.

1 The safety objective of the 125 V DC Power System is to provide independent sources of 125 V DC power to all DC loads for normal operating conditions and for safe shutdown of the plant following abnormal operational transients and postulated accidents. The safety objective of the LPCI MOV independent power supply system is l to provide an independent power source for the operation of required motor operated ,

, valves in the Low Pressure Coolant injection System and the reactor water recirculation loops during a loss of offsite power coincident with a design basis LOCA. These safety l objectives are not affected by the proposed technical specification changes. The .

changes do not alter the conclusions of the plant's accident analyses as documented in l the FSAR or the NRC staff's SER. l

2. create the possibility of a new or different kind of accident from those previously  ;

evaluated. The Technical Specifications are being revised to be consistent with actual plant practice and IEEE 4501987. These changos do not involve the modification of any existing equipment, systems, or components. Applying an equalizing charge more than 3 days and less than 7 days prior to the start of the performance discharge  ;

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l Attachment 11 l l SAFETY EVALUATION Page 4 of 4 (capacity) test does not create the possibility of a new or different kind of accident from  !

those previously evaluated.

3. involve a significant reduction in the margin of safety. The changes do not involve a reduction in the margin of safety because the proposed changes are consistent with actual plant practice and with current industry standards (i.e., IEEE 450-1987).

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V. IMPLEMENTATION OF THE PROPOSED CHANGES implementation of the proposed changes will not impact the ALARA or Fire Protection Programs at the FitzPatrick Plant, nor will the changes impact the environment, i

CONCLUSION VI. l l

Those changes, as proposed, do not constitute an unreviewed safety question as defined in ,

10 CFR 50.59. That is, they:

a. will not increase the probabilliy of occurrence or the consequences of an accident or malfunction of equipment important to safety previously evaluated in the safety analysis report;

b. will not increase the possibility for an accident or malfunction of a different type from any evaluated previously in the safety analysis report; c, will not reduce the margin of safety as defined in the basis for any technical specification; and

d. Involve no significant hazards consideration, as defined in 10 CFR 50.92.

Vll. REFERENCES

1. James A. FitzPatrick Nuclear Power Plant Updated Final Safety Analysis Report, Section 8.7.

2. James A. FitzPatrick Nuclear Power Plant Updated Final Safety Analysis Report, Section 8. ;0,

3. James A. FitzPatrick Nuclear Power Plant Safety Evaluation Report (SER), dated November 20,1972 and Supplements.

4. NRC letter, B. A. Boger to W. Fernandez, 'NRC Safety System Functional Inspection (SSFI)*

Report No. 50-333/89-80, dated August 22,1989.

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