ML042730093

Tech Spec Pages for Amendments 172 and 174 Regarding Direct Current Electric Power Systems

ML042730093
Person / Time
Site:	Diablo Canyon
Issue date:	09/20/2004
From:	NRC/NRR/DLPM
To:
Donohew J N, NRR/DLPM,415-1307
Shared Package
ML042710550	List: ML042710530 ML042730093
References
TAC MC0176, TAC MC0177
Download: ML042730093 (10)

Text

DC Sources - Operating 3.8.4 3.8 ELECTRICAL POWER SYSTEMS 3.8.4 DC Sources - Operating LCO 3.8.4 APPLICABILITY:

Three Class 1 E DC electrical power subsystems shall be OPERABLE.

MODES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One battery charger A.1 Restore battery terminal 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> inoperable.

voltage to greater than or equal to the minimum established float voltage.

AND A.2 Verify battery float 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> current - 2 amps.

AND A.3 Restore battery charger 14 days to OPERABLE status.

B. One battery inoperable.

B.1 Restore battery to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> OPERABLE status.

C.

One DC electrical power C.A Restore DC electrical 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> subsystem inoperable for power subsystem to reasons other than OPERABLE status.

Condition A or B.

D.

More than one full capacity D.1 Restore the DC 14 days charger receiving power electrical power simultaneously from a subsystem to a single 480 V vital bus.

configuration wherein each charger is powered from its associated 480 volt vital bus.

E. Required Action and E.1 Be in MODE 3.

6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> Associated Completion AND Time not met.

E.2 Be in MODE 5.

36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> I

I DIABLO CANYON - UNITS 1 & 2 TAB3.8-RX 18 3.8-18 Unit 1 - Amendment No. 43.572 Unit 2 - Amendment No. 435174

DC Sources - Operating 3.8.4 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.4.1 Verify battery terminal voltage is greater than or 7 days equal to the minimum established float voltage.

SR 3.8.4.2 Verify each battery charger supplies 2 400 amps at 24 months greater than or equal to the minimum established float voltage for 2 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

OR Verify each battery charger can recharge the battery to the fully charged state within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> while supplying the largest combined demands of the various continuous steady state loads, after a battery discharge to the bounding design basis event discharge state.

SR 3.8.4.3 NOTES

1. The modified performance discharge test in SR 3.8.6.6 may be performed in lieu of SR 3.8.4.3.

2.

This Surveillance shall not be performed in MODE 1, 2, 3, or 4.

Verify battery capacity is adequate to supply, and 24 months maintain in OPERABLE status, the required emergency loads for the design duty cycle when subjected to a battery service test.

DIABLO CANYON - UNITS 1 & 2 TAB3.8-RX 19 3.8-19 Unit 1 - Amendment No. 45, 172 Unit 2 - Amendment No. 435, 174

DC Sources - Operating 3.8.4 THIS PAGE NOT USED DIABLO CANYON - UNITS 1 & 2 TAB3.8 -RX 20 3.8-20 Unit 1 -Amendment No. 435,172 Unit 2 - Amendment No. 435, 174

DC Sources - Shutdown 3.8.5 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.5.1 NOTE-

=--

The following SRs are not required to be performed:

SR 3.8.4.2 and SR 3.8.4.3.

For DC sources required to be OPERABLE, the In accordance with following SRs are applicable:

applicable SRs SR 3.8.4.1 SR 3.8.4.2 SR 3.8.4.3.

I DIABLO CANYON - UNITS 1 & 2 TAB 3.8-RX 22 3.8-22 Unit 1 - Amendment No. 1-35,172 Unit 2 - Amendment No. 4-35,174

Battery Parameters 3.8.6 3.8 ELECTRICAL POWER SYSTEMS 3.8.6 Battery Parameters LCO 3.8.6 APPLICABILITY:

Battery parameters for the three Class 1E batteries shall be within limits.

When associated DC electrical power subsystems are required to be OPERABLE.

ACTIONS NOTE Separate Condition entry is allowed for each battery.

A____

CONDITION REQUIRED ACTION COMPLETION TIME A.

One battery with one or A.1 Perform SR 3.8.4.1.

2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> more battery cells with float AND voltage < 2.07 V.

A.2 Perform SR 3.8.6.1.

2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> AND A.3 Restore affected cell(s) 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> float voltage to 2 2.07 V.

B. One battery with float B.1 Perform SR 3.8.4.1.

2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> current > 2 amps.

AND B.2 Restore battery float 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> current to < 2 amps.

(continued)

DIABLO CANYON - UNITS 1 & 2 TAB 3.8-RX 23 3.8-23 Unit 1 - Amendment No. 435, 172 Unit 2 - Amendment No. 435, 174

Battery Parameters 3.8.6 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME NNOTE--

N T

Sg Required Action C.2 shall be Required Actions C.1 and C.2 are completed if electrolyte level only applicable if electrolyte level was below the top of the plates.

was below the top of the plates.

C.

One battery with one or C.1 Restore affected cell(s) 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> more cells with electrolyte electrolyte level to above level less than minimum the top of the plates.

established design limits.

AND C.2 Verify no evidence of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> leakage.

AND C.3 Restore affected cell(s) 31 days electrolyte level to greater than or equal to minimum established design limits.

D.

One battery with pilot cell D.1 Restore battery pilot cell 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> electrolyte temperature less electrolyte temperature than minimum established to greater than or equal design limits.

to minimum established design limits.

E. Two or more batteries with E.1 Restore battery 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> battery parameters not parameters for one within limits.

battery to within limits.

F.

Required Action and F.1 Declare associated Immediately associated Completion battery inoperable.

Time of Condition A, B, C, D, or E not met.

OR One battery with one or more battery cells float voltage < 2.07 V and float current > 2 amps.

DIABLO CANYON - UNITS 1 & 2 TAB 3.8 - RX 24 3.8-23a Unit 1 - Amendment No. 435 172 Unit 2 - Amendment No. 435, 174

Battery Parameters 3.8.6 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.6.1

-NOTE--

Not required to be met when battery terminal voltage is less than the minimum established float voltage of SR 3.8.4.1.

Verify each battery float current is s 2 amps.

7 days SR 3.8.6.2 Verify each battery pilot cell voltage is 2 2.07 V.

31 days SR 3.8.6.3 Verify each battery connected cell electrolyte level is 31 days greater than or equal to minimum established design limits.

SR 3.8.6.4 Verify each battery pilot cell temperature is greater 31 days than or equal to minimum established design limits.

SR 3.8.6.5 Verify each battery connected cell voltage is 92 days

> 2.07 V.

SR 3.8.6.6 NOTE This Surveillance shall not be performed in MODE 1, 2, 3, or4.

Verify battery capacity is 2 80% of the manufacturer's 60 months rating when subjected to a performance discharge AND test or a modified performance discharge test.

24 months when battery shows degradation or has reached 85% of expected life with capacity < 100%

of manufacturer's rating.

AND 24 months when battery has reached 85% of the expected life with capacity 2 100% of manufacturers rating.

DIABLO CANYON - UNITS 1 & 2 TAB 3.8 - RX 25 3.8-24 Unit 1 - Amendment No. 435, 172 Unit 2 -Amendment No. 435, 174

Battery Parameters 3.8.6 THIS PAGE NOT USED I

DIABLO CANYON - UNITS 1 & 2 TAB 3.8 -RX 26 3.8-25 Unit 1 -Amendment No. 435, 172 Unit 2 - Amendment No. 435, 174

Programs and Manuals 5.5 5.5 Programs and Manuals 5.5.15 Safety Function Determination Program (SFDP) (continued)

b.

A required system redundant to the system(s) in turn supported by the inoperable supported system is also inoperable; or

c.

A required system redundant to the support system(s) for the supported systems (a) and (b) above is also inoperable.

The SFDP identifies where a loss of safety function exists. If a loss of safety function is determined to exist by this program, the appropriate Conditions and Required Actions of the LCO in which the loss of safety function exists are required to be entered.

5.5.16 Containment Leakage Rate Testing Program

a.

A program shall be established to implement the leakage rate testing of the containment as required by 10 CFR 50.54(o) and 10 CFR 50, Appendix J, Option B, as modified by approved exemptions. This program shall be in accordance with the guidelines contained in Regulatory Guide 1.163, "Performance-Based Containment Leak-Test Program, dated September 1995." The ten-year interval between performance of the integrated leakage rate (Type A) test, beginning May 4, 1994, for Unit 1 and April 30, 1993, for Unit 2, has been extended to 15 years.

b.

The peak calculated containment internal pressure for the design basis loss of coolant accident, Pa, is 47 psig.

c.

The maximum allowable containment leakage rate, La, at Pa, shall be 0.10% of containment air weight per day.

d.

Leakage rate acceptance criteria are:

1.

Containment overall leakage rate acceptance criterion is

• 1.0 La. During the first unit startup following testing in accordance with this program, the leakage rate acceptance criteria are < 0.60 La for the Type B and Type C tests and

• 0.75 La for Type A tests;

2.

Air lock testing acceptance criteria are:

a)

Overall air lock leakage rate is < 0.05 La when tested at 2 Pa.

b)

For each door, leakage rate is

• 0.01 La when pressurized to 2 10 psig.

e.

The provisions of SR 3.0.2 do not apply to the test frequencies specified in the Containment Leakage Rate Testing Program.

f.

The provisions of SR 3.0.3 are applicable to the Containment Leakage Rate Testing Program.

(continued)

DIABLO CANYON - UNITS 1 & 2 5.0-24 Unit 1 - Amendment No. 435, 450,172 TAB 5.0 - RX 26 Unit 2 - Amendment No. 4-35, 4-,

174

Programs and Manuals 5.5 5.5 Programs and Manuals (continued) 5.5.17 Battery Monitoring and Maintenance Program This Program provides for restoration and maintenance, based on the recommendations of IEEE Standard 450, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications," or of the battery manufacturer, of the following:

a.

Actions to restore battery cells with float voltage < 2.13 V, and

b.

Actions to equalize and test battery cells that have been discovered with electrolyte level below the top of the plates.

DIABLO CANYON - UNITS 1 & 2 TAB 5.0 - RX 27 5.0-24a Unit 1 -Amendment No. 172 Unit 2 - Amendment No. 174