ML060750452

Technical Specification Pages Re EDG Surveillance

ML060750452
Person / Time
Site:	Comanche Peak
Issue date:	03/15/2006
From:	Office of Nuclear Reactor Regulation
To:
Thadani M
Shared Package
ML060750048	List: ML060450516 ML060750452
References
TAC MC4912, TAC MC4913
Download: ML060750452 (10)

Text

AC Sources - Operating 3.8.1 3.8 ELECTRICAL POWER SYSTEMS 3.8.1 AC Sources -Operating LCO 3.8.1 The following AC electrical sources shall be OPERABLE:

a. Two qualified circuits between the offsite transmission network and the onsite Class 1E AC Electrical Power Distribution System;

b. Two diesel generators (DGs) capable of supplying the onsite Class 1E power distribution subsystem(s); and

c. Automatic load sequencers for Train A and Train B.

APPLICABILITY: MODES 1, 2, 3, and 4

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NOTE----------------------------------------------

One DG may be synchronized with the offsite power source under administrative controls for the purpose of surveillance testing.

COMANCHE PEAK - UNITS 1 AND 2 3.8-1 Amendment No. 64 124

AC Sources - Operating 3.8.1 ACTIONS

-NOTE-LCO 3.0.4.b is not applicable to DGs.

-- --- - - - -- - - -- - - -- - - - -- - - -- - - -- - - -- - - - -- - - -- - - -- - - -- - - - -- - - -- - - -- - --.- - -

CONDITION REQUIRED ACTION COMPLETION TIME A. One required offsite circuit A.1 Perform SR 3.8.1.1 for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable. required OPERABLE offsite circuit. AND Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter AND

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NOTE-----------------

In MODES 1, 2 and 3, the TDAFW pump is considered a required redundant feature.

A.2 Declare required 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from feature(s) with no offsite discovery of no power available offsite power to one inoperable when its train concurrent with redundant required inoperability of feature(s) is inoperable. redundant required feature(s)

AND A.3 Restore required offsite 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> circuit to OPERABLE status. AND 6 days from discovery of failure to l meet LCO (continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-2 Amendment No. 4-G9 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.4 Verify each day tank contains 2 1440 gal of fuel oil. 31 days SR 3.8.1.5 Check for and remove accumulated water from each day 31 days tank.

SR 3.8.1.6 Verify the fuel oil transfer system operates to 92 days automatically transfer fuel oil from storage tank to the day tank.

SR 3.8.1.7 -------------------------------- NOTE-----------------------------------

All DG starts may be preceded by an engine prelube period.

Verify each DG starts from standby condition and 184 days achieves:

a. in < 10 seconds, voltage 2 6480 V and frequency

Ž 58.8 Hz; and

b. steady state, voltage Ž 6480 V and < 71 50V, and frequency 2 58.8 Hz and < 61.2 Hz.

SR 3.8.1.8 -------------------------------- NOTE-----------------------------------

This Surveillance shall nDt normally be performed in MODE 1 or 2. However, this Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify automatic and manual transfer of AC power 18 months sources from the normal offsite circuit to each alternate required offsite circuit.

I (continued) I COMANCHE PEAK - UNITS 1 AND 2 3.8-8 Amendment No. 66 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.9 -------------------------------- NOTE--------------------------------

This Surveillance shall not normally be performed in MODE 1 or 2. However, this Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify each DG rejects a load greater than or equal to its 18 months associated single largest post-accident load, and:

a. Following load rejection, the frequency is < 66.75 Hz; and

b. Within 3 seconds following load rejection, the voltage is > 6480 V and < 7150 V.

SR 3.8.1.10 Verify each DG does not trip and voltage is maintained 18 months I

< 8280 V during and following a load rejection of 2 6300 kW and < 7000 kW.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-9 Amendment No. 64 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE I FREQUENCY SR 3.8.1.11 ------------------------------- NOTES----------------------------------

1. All DG starts may be preceded by an engine prelube period.

2. This Surveillance shall not normally be performed in MODE 1 or 2. However, portions of the Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify on an actual or simulated loss of offsite power 18 months signal:

a. De-energization of emergency buses;

b. Load shedding from emergency buses;

c. DG auto-starts from standby condition and:

1. energizes permanently connected loads in

• 10 seconds,

2. energizes auto-connected shutdown loads through automatic load sequencer,

3. maintains steady state voltage 2 6480 V and

<7150V,

4. maintains steady state frequency 2 58.8 Hz and

< 61.2 Hz, and

5. supplies permanently connected and auto-connected shutdown loads for 2 5 minutes.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-1 0 Amendment No. 64 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY t

SR 3.8.1.12 --------------------- NOTES----------------------------------

All DG starts may be preceded by prelube period.

I Verify on an actual or simulated Safety Injection (SI) 18 months actuation signal each DG auto-starts from standby condition and:

a. In < 10 seconds after auto-start and during tests, achieves voltage 2 6480 V and frequency

Ž 58.8 Hz;

b. Achieves steady state voltage 2 6480 V and

< 7150 V and frequency Ž 58.8 Hz and < 61.2 Hz;

c. Operates for 2 5 minutes; SR 3.8.1.13 -------------------------- IJiIt: -------------

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For Unit 2, testing need only be performed for LOOP concurrent with SI until startup following 2RFO5. I Verify each DG's automatic trips are bypassed on 18 months actual or simulated (i) loss of voltage signal on the emergency bus, and (ii) SI actuation signal, except:

a. Engine overspeed; and

b. Generator differential current.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-1 1 Amendment No. 6-8 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY 1-SR 3.8.1.14 ---------------------------- NOTES--------------------------------

Momentary transients outside the load and power factor ranges do not invalidate this test.

Verify each DG operates for Ž 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s: 18 months

a. For 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 6900 kW and < 7700 kW; and

b. For the remaining hours of the test loaded 2 6300 kW and < 7000 kW.

SR 3.8.1.15 NOTES---------------------------------

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1. This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 6300 kW and

< 7000 kW. Momentary transients outside of load range do not invalidate this test.

2. All DG starts may be preceded by an engine prelube period.

Verify each DG starts and achieves: 18 months

a. in < 10 seconds, voltage 2 6480 V and frequency 2 58.8 Hz; and

b. steady state, voltage 2 6480 V, and < 7150 V and frequency 2 58.8 Hz and < 61.2 Hz.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-12 Amendment No. 66 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.16 NOTE-----------------------------------

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This Surveillance shall not normally be performed in MODE 1 or 2. However, this Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

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Verify each DG: 18 months

a. Synchronizes with offsite power source while loaded with emergency loads upon a simulated restoration of offsite power;

b. Transfers loads to offsite power source; and

c. Returns to ready-to-load operation.

SR 3.8.1.17 This Surveillance shall not normally be performed in MODE 1 or 2. However, portions of the Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify, with a DG operating in test mode and 18 months connected to its bus, an actual or simulated SI actuation signal overrides the test mode by:

a. Returning DG to ready-to-load operation; and

b. Automatically energizing the emergency load from offsite power.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-1 3 Amendment No. 64 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.18 --------------------------- NOTE-----------------------------------

This Surveillance shall not normally be performed in MODE 1 or 2. However, this Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify interval between each sequenced load block is 18 months within +/- 10% of design interval for each automatic load sequencer.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-1 4 Amendment No. 64 124

AC Sources- Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE IFREQUENCY SR 3.8.1.19 - --------------- NOTES---------------------------------

1. All DG starts may be preceded by an engine prelube period.

2. This Surveillance shall not normally be performed in MODE I or 2. However, portions of the Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify on an actual or simulated loss of offsite power 18 months signal in conjunction with an actual or simulated SI actuation signal:

a. De-energization of emergency buses;

b. Load shedding from emergency buses; and

c. DG auto-starts from standby condition and:

1. energizes permanently connected loads in

< 10 seconds,

2. energizes auto-connected emergency loads through load sequencer,

3. achieves steady state voltage 2 6480 V and

<7150V,

4. achieves steady state frequency 2 58.8 Hz and

< 61.2 Hz, and

5. supplies permanently connected and auto-connected emergency loads for 2 5 minutes.

(continued)

COMANCHE PEAK - UNITS 1 AND 2 3.8-15 Amendment No. 64 124