ML18094B125

Proposed Tech Specs,Modifying 125 & 28-volt Battery Capacity Surveillance Requirements

ML18094B125
Person / Time
Site:	Salem
Issue date:	10/17/1989
From:	Public Service Enterprise Group
To:
Shared Package
ML18094B124	List: ML18094B123 ML18094B125
References
NUDOCS 8910200227
Download: ML18094B125 (14)

Text

,

ATTACHMENT 2

ELECTRlCAS.,,~WER SYSTEMS SURVE I Lt:Alett RE Cu rnEMENTS (Conti riued) aaonaa-.a...,... --..,... -. ** ~------aaaaaa**--**---.--.--***************~aa

2.

The pilot cell specific gravity, corrected to 77°F and full electrolyte level, is greater than or equal to l.200.

3. The pilot cell voltage is greater than or equal to 2.08 volts.

4.

The overall battery voltage is greater than or equal to 125 VO 1 ts.

b.

At least once per 92 days by verifying that:

d.

e.

l. The voltage of each connected cell fs greater than or equal to 2.13 volts under float-charge and has not decreased nnre than 0.27 volts from the value observed during the original accept-ance test.

2.

The specific gravity, corrected to 77°F and fu-11 electrolyte level, of each connected cell is greater than or equal to 1.200 and has not decreased ll1)re than 0.02 from the value ob-served during the previous test.

3.

The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c.

At least once per 18 ll1)nths by verifying that:

1.

The cells, cell plates and battery racks show no visual indi-cation of physical damage or abnormal deterioration.

2.

The ce 11-to -ca 11 and termi na 1 connections are c 1 ean, tight, and coated with anti-corrosion material.

3.

The resistance of each cell-to-cell and terminal connection is less than or equal to 0.01 ohms.

4.

T~e battery charger will supply at least 200 amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

OR SIMlh..ArEb Tl-/£ DES'16N Dv7YC'1'a.E.

At least once per 18 nonths, duri~

g shutdown, by verifying that.)

the battery capacity is adequate to supply and maintain fn ~

OPERABLE status all of the actual emergency loads for 8 Mtars when the battery is subjected to a battery service test.

At least once per 60 nonths, during shutdown, by verifying that the battery capacity is at least ~oi of the manufacturer's rating

• when subjected to a perfQrmance discharge test. Satisfactory completion of this perf()rmance discharge test shall al so satisfy the re~uirements of Specification 4.8.2.3.2.d if the performance discharge test is conducted during a shutdOwn where that test and the battery service test ~uld both be required.

SALEM -* UNIT 1 3/4 8-9 Amendment No. 70

E l£CTR ICA L POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2. The pilot cell specific gravity, corrected to 77°F, and full electrolyte level, is greater than or equal to 1.200.

3. The pilot cell voltage is greater than or equal to 2.08 volts.

4. The overall battery voltage is greater than or equal to 27 volts.

b.

At least once per 92 days by verifying that:

c.

1. The voltage of each connected cell is greater than or equal to 2.13 volts under float charge and has not decreased more than 0.27 volts from the value observed during the original acceptance test.

r 2.* The specific gravity, corrected to 77°F and full electrolyte level, of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.02 from the value observed during the previous test.

3. The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

At least once per 18 months. by ver1fyi ng that:

1. The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterio~ation.

2. The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.

3. The battery charger will supply at least 150 amperes at 2A volts

- for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

Oi. S1""1VLA'T'"ED THE 1)S1E.JJ 01Jr<( C"1'CL£

d.

At least once per nths, during shutdow, by verifying that the battery capacity i quate to supply and maintain in OPERABLE status all of the actual emergency loads for 8 he~r! 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 soi of the manufacturer's rating when subjected to a performance discharge test. Satisfactory completion of this performance discharge test shall also satisfy the requirements of Specification 4.8.2.5.2.d if the performance discharge test is conducted during a shutdown where that test and the battery service test would both be required.

SA LE~ - UN IT 1 3/j 8-12 4

Amendment No. 88

- *~.....

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQJIREMENTS (Continued)

aa...----a*--------------*-----sw.... _....._..............

~asazaaaasa*

2.

The pilot cell specific gravity, corrected to 77°F and full electrolyte level, is greater than or equal to 1.200.

3. The pilot cell voltage is greater than or equal to 2.08 volts.

4.

The overall battery voltage is greater than or equal to 125 volts.

b.

At least once per 92 days by verifying that:

1. The voltage of each connected cell 1s greater than or equal to 2.13 volts under float charge and has not decreased nnre than 0.27 volts from the value observed during the original accept-ance test.

2.

The specific gravity, corrected to 77°F and full electrolyte level, of each connected eel 1. is greater than or equal to 1.200 and nas not decreased nnre than 0.02 from the value*_ ob-served during the previous test.

3.

The electrolyte level of each connected cell is between the minimum and maxil!lUm level indication Marks.

c. At least once per 18 nnnths by verifying that:

1. The cells, cell plates and battery racks show no visual indi-cation of physical damage or abnormal deterioration.

2.

The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.

3.

The resistance of each* cell-to-cell and terminal connection is less than or equal to 0.01 ohms.

4.

The-battery charger will supply at least.200 amperes at *125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

d.

At le~st once per 18 nnnths, during shutdown, by verifying that oR. S1"'1IA.ATED r

THE DES.ti.Al Dvrr CYO-£ the battery capacity is adequate supply and maintain in OPERABLE status all of the actual emergency loads for 8 AetH'S when the battery is subjected to a battery service *test.

e.

At least once per 60 nnnths, during shutdown~ by verifying that the battery capacity is at least soi of the manufacturer's rating when subjected to a performance discharge test. Satisfactory completion of this performance discharge test shal 1 al so satisfy the requirements of Specif*ication 4.8.2.3.2.d if the performance discharge test is conducted during a shutdown where that test and the battery service test ~uld both be required.

SALEM - UN IT 2 3/4 8-J 1 Amendment No. 45

. I

• E L.ECTR ICA L POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

b.

2. The pilot cell specific gravity, corrected to* 77°F, and full electrolyte level, is greater than or equal to 1.200. *

3. The pilot cell voltage is greater than or equal to 2.08 volts.

4. The overall battery voltage is greater than or equal to 27 volts.

At least once per 92 days by verifying that:

1. The voltage of each connected cell is greater than or equal to 2.13 volts under float charge and has not decreased more than 0.27 volts from the value observed during the ~riginal acceptance test.

2. The specific gravity, corrected to 77°F and full electrolyte l_evel, of each connected cell is greater than or equal,to 1.200-and has not decreased more than 0.02 from the value observed during the previous test.

3. The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c.

At least once per 18 months by verifying that:

1. The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2. The cell-to-cell and terminal connections are clean, tight, and rna~!~ w~t~ !~ti-corrosion material.

3. The battery charger wi 11 supply at least 150 amperes at 28 vol ts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

OR StMVl..AIEO

~ Tit£ [)f:.'Sl~N DvT'r" CYCt.£

d.

At least once per 18 months, during shutdown, by verifying that the battery capacity i adequate to supply and maintain 1 n OPE RAB LE status all of the actual emergency loads for 8 ~ours 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 manufacturer's rati ng when subjected to a performance discharge test. Satisfactory completion ot this performance discharge test shall also satisfy the requirements of Specification 4.8.2.5.2.d if the performance discharge test is conducted during a shutdown where that test and the battery servi ce test wou ld bot h be required.

SA LEM - UN IT 2 3/.% 8-14 I/

Amendment No.

61

r ATTACHMENT 3

ELECTRICAL POWER ~TEMS SURVEILLANCE REQUIREMENTS (Continued)

2.

The pilot cell specific *gravity, corrected to 77°F and full electrolyte level, is greater than or equal to 1.200.

3.

The pilot cell voltage is greater than or equal to 2.08 volts.

4.

The overall battery voltage is greater than or equal to 125 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge and has not decreased more than 0.27 volts from the value observed during the original acceptance test.

2.

The specific gravity, corrected to 77°F and full electrolyte level, of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.02 from the value observed during the previous test.

3.

The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c.

At least once per 18 months by verifying that:

1.

The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2.

The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.

3.

The resistance of each cell-to-cell and terminal connection is less than or equal to 0.01 ohms.

4.

The battery charger will supply at least 200 amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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 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 manufacturer's rating when subjected to a performance discharge test. Satisfactory completion of this performance discharge test shall also satisfy the requirements of Specification 4.8.2.3.2.d if the performance discharge test is conducted during a shutdown where that test and the battery service test would both be required.

SALEM - UNIT 1 3/4 8-9 Amendment No. 70

ELECTRICAL POWER ~TEMS SURVEILLANCE REQUIREMENTS (Continued)

2.

The pilot cell specific gravity, corrected to 77°F, and full electrolyte level, is greater than or equal to 1.200.

3.

The pilot cell voltage is greater than or equal to 2.08 volts.

4.

The overall battery voltage is greater than or equal to 27 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge and has not decreased more than 0.27 volts from the value observed during the original acceptance test.

2.

The specific gravity, corrected to 77°F and full electrolyte level, of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.02 from the value observed during the previous test.

3.

The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c.

At least once per 18 months by verifying that:

1.

The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2.

The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.

3.

The battery charger will supply at least 150 amperes at 28 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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 manufacturer's rating when subjected to a performance discharge test. This performance discharge test shall be performed subsequent to the satisfactory completion of the required battery service test.

SALEM - UNIT 1 3/4 8-12 Amendment No. 28

ELECTRICAL POWER.TEMS SURVEILLANCE REQUIREMENTS (Continued)

2.

The pilot cell specific gravity, corrected to 77°F and full electrolyte level, is greater than or equal to 1.200.

3.

The pilot cell voltage is greater than or equal to 2.08 volts.

4.

The overall battery voltage is greater than or equal to 125 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge and has not decreased more than 0.27 volts from the value observed during the original acceptance test.

2.

The specific gravity, corrected to 77°F and full electrolyte level, of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.02 from the value observed during the previous test.

3.

The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c.

At least once per 18 months by verifying that:

1.

The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2.

The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.

3.

The resistance of each cell-to-cell and terminal connection is less than or equal to 0.01 ohms.

4.

The battery charger will supply at least 200 amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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 manufacturer's rating when subjected to a performance discharge test.

Satisfactory completion of this performance discharge test shall also satisfy the requirements of Specification 4.8.2.3.2.d if the performance discharge test is conducted during a shutdown where that test and the battery service test would both be required.

SALEM - UNIT 2 3/4 8-11 Amendment No. 45

ELECTRICAL POWER.TEMS SURVEILLANCE REQUIREMENTS (Continued)

2.

The pilot cell specific gravity, corrected to 77°F, and full electrolyte level, is greater than or equal to 1.200.

3.

The pilot cell voltage is greater than or equal to 2.08 volts.

4.

The overall battery voltage is greater than or equal to 27 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge and has not decreased more than 0.27 volts from the value observed during the original acceptance test.

2.

The specific gravity, corrected to 77°F and full electrolyte level, of each connected call is greater than or equal to 1.200 has not decreased more than 0.02 from the value observed and during the previous test.

3.

The electrolyte level of each connected call is between the minimum and maximum level indication marks.

c.

At least once per 18 months by verifying that:

1.

The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2.

The cell-to-cell and terminal connections are clean, tight, and coated with anti-corrosion material.

3.

The battery charger will supply at least 150 amperes t 28 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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 manufacturer's rating when subjected to a performance discharge test.

Satisfactory completion of this performance discharge test shall also satisfy the requirements of Specification 4.8.2.5.2.d if the performance discharge test is conducted during a shutdown where that test and the battery service test would both be required.

SALEM - UNIT 2 3/4 8-14 Amendment No. 61

ATTACHMENT 4

I.

Summary A.

The calculation consists of three (3) interrelated calculations.

The first is a determination of the load profile for each battery.

The plant conditions, during which this conditions during which this determination was made and the methods used are specified within the calculation documentation.

B.

The second calculation consists of a short circuit study of the DC system, to determine the maximum short circuit currents available at the main bus and distribution cabinets.

c.

Using the load profile data obtained above, a third calculation is performed to investigate the voltage profiles at various locations in the DC systems.

II.

Assumptions and Data A.

It is assumed that the batteries are fully charged prior to any event (e.g. short circuit, or loss of AC power causing a battery discharge).

B.

No consideration is given to any emergency interties between DC systems.

c.

The scenario for battery discharge calculations is that a loss of AC power occurs coincident with a loss of coolant accident (LOCA).

D.

For (2) hours immediately following the coincident loss of AC power/LOCA evant, battery chargers are not available.

E.

During the second time interval (1-120 minutes) offsite power becomes available and the 4160V group buses (non-vital) are manually re-connected to this source of AC power.

F.

The 4160V vital buses continue to obtain power from their respective diesel generators for the entire (2) hour period of interest.

G.

The voltage drop due to the resistance of voltmeter shunts and connections between battery cells is negligible.

H.

No consideration was given to any inrush currents associated with spring charging motors in circuit breakers or solenoid operated valves.

I.

For the voltage profile calculation, cable resistance is calculated for an ambient temperature of 40 c, and a cable temperature calculated using the currents calculated in the voltage profile calculation.

J.

For the short circuit calculation, cable resistence is calculated for a cable temperature of 25 c.

K.

All existing data on related drawings has been verified by PSE&G procedures.

L.

The voltage drop due to wiring connecting circuit components located outside the distribution cabinets or switchgear is negligible.

M.

For the purposes of determining load, where the identity of a particular relay was indeterminable but the function was established, the relay was taken to be identical to relays identified elsewhere in the system having the same function.

N.

Where a circuit contained many unidentifiable relays, lights and other unknown circuit components, the load due to this circuit was taken to be 80% of the rating of the breaker supplying the circuit.

o.

Wherever a relay was found whose operation was indeterminable, it was taken to be energized for the entire (2) hours.

P.

The vital buses are energized by the diesel generators within (14) seconds and then the vital instrument inverter loads are sequenced back onto their respective vital AC bus.

III. DC Load Evaluation Criteria A.

The purpose of the load calculation is to determine the load each battery must supply to safely shutdown their respective units following the worst case postulated accident.

B.

An engineering assessment of the load for each of the batteries is made based primarily upon a review of the drawigs associated with each of the various circuits connected to the batteries.

c.

For this purpose, the following accident scenario has been chosen; a unit undergoes a coincident loss of offsite power (LOP) and a large break LOCA while both of the battery chargers associated with each battery are out of service for (2) hours.

It is assumed that at the inception of the accident, the batteries are fully charged.

D.

According to the SGS-UFSAR, PSE&G's commitment is to size batteries in support of a loss of AC power (i.e.

loss of offsite power for 2 consecutive hours).

However, all other analyzed design scenarios described in Chapter 15 will be mitigated by the active support of the diesel generators beyond one minute, including a single failure of one vital battery system.

This study is conducted to establish, conservatively, all possible loads that might be supported from the vital buses under an unlikely concurrent event of a LOP, a LOCA and a loss of all battery chargers (uncommitted operating condition) for two hours.

E.

The two hour time period is divided into two segments.

The first segment is the time between inception of the postulated accident and the first minute (0-1 minute).

This time period is critical since many automatic systems will respond to the accident situation.

The second time interval (1-120 minutes) identifies the time to safely shutdown the planto During the 1-120 minute time interval, for the purpose of this calculation, a return of offsite power is anticipated, allowing the manual restoration of power to the group buses (non-vital).