ML042780529

Technical Specifications Pages, Re Alternating Current Sources for Plant Operation

ML042780529
Person / Time
Site:	Diablo Canyon
Issue date:	09/28/2004
From:	Office of Nuclear Reactor Regulation
To:
Donohew J N, NRR/DLPM,415-1307
References
TAC MB9476, TAC MB9477
Download: ML042780529 (6)

Text

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY 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, speed Ž 900 rpm; and

b. in

• 13 seconds, voltage Ž 3785 V and

• 4400 V, and frequency Ž 58.8 Hz and

• 61.2 Hz.

1 SR 3.8.1.8 -------- NOTE--I--

This Surveillance shall not normally be performed for automatic transfers 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 24 months sources from the normal offsite circuit to the alternate required offsite circuit and manual transfer from the alternate offsite circuit to the delayed access circuit.

SR 3.8.1.9 ____--' t to---________

1. 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.

2. If performed with the DG synchronized with offsite power, it shall be performed at a power factor

• 0.9.

Verify each DG rejects a load greater than or equal to 24 months its associated single largest post-accident load, and:

a. Following load rejection, the frequency is

• 63 Hz;

b. Within 2.4 seconds following load rejection, the voltage is > 3785 V and

• 4400 V; and

c. Within 2.4 seconds following load rejection, the frequency is Ž 58.8 Hz and

• 61.2 Hz.

(continued)

DIABLO CANYON - UNITS I & 2 3.8-5 Unit I - Amendment No. 435,174 TAB3.8-RX 5 Unit 2 - Amendment No. 43,5176

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.10 Verify each DG operating at a power factor

• 0.87 24 months does not trip and voltage is maintained

• 5075 V I during and following a load rejection of - 2340 kW and

• 2600 kW.

1IA..  %

SR 3.8.1.11 ______----Nt ~_JIrFI tb-And_ _

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

2. This Surveillance shall not normally be performed in MODE 1, 2, 3, or 4. 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 24 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

• 1 0 seconds,

2. energizes autb-connected loads through auto-transfer sequencing timers,

3. maintains steady state voltage 2 3785 V and

• 4400 V,

4. maintains steady state frequency 2 58.8 Hz and

• 61.2 Hz, and

5. supplies permanently connected and auto-connected loads for Ž 5 minutes.

(continued)

DIABLO CANYON - UNITS I & 2 3.8-6 Unit 1 - Amendment No. 43.5,174 TAB3.8-RX 6 Unit 2 - Amendment No. 435,176

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.12 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 Safety Injection 24 months signal each DG auto-starts from standby condition and:

a. In < 13 seconds after auto-start and during tests, achieves voltage Ž 3785 V and

• 4400 V;

b. In

• 13 seconds after auto-start and during tests, achieves frequency > 58.8 Hz and

< 61.2 Hz;

c. Operates for 2 5 minutes;

d. Permanently connected loads are energized from the alternate offsite power source; and

e. Emergency loads are auto-connected through the ESF load sequencing timers to the alternate offsite power source.

SR 3.8.1.13 Verify each DG's automatic trips are bypassed when 24 months I the diesel engine trip cutout switch is in the cutout position and the DG is aligned for automatic operation except:

a. Engine overspeed;

b. Generator differential current; and

c. Low lube oil pressure; (continued)

DIABLO CANYON - UNITS 1 & 2 3.8-7 Unit I - Amendment No. 435,174 TAB3.8-RX 7 Unit 2 - Amendment No. 435,176

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY 4-SR 3.8.1.14

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

I Verify each DG operating at a power factor *0.87 24 months operates for Ž 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s:

a. For Ž 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded Ž 2600 kW and

• 2860 kW; and

b. For the remaining hours of the test loaded

> 2340 kW and s 2600 kW.

SR 3.8.1.15 ---- NOTES--

1. This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated Ž 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 2340 kW and

• 2600 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: 24 months

a. in

• 10 seconds, speed Ž 900 rpm; and

b. in

• 13 seconds, voltage Ž 3785 V, and

• 4400 V and frequency 2 58.8 Hz and

• 61.2 Hz.

.4.

SR 3.8.1.16 ______ N [ J _ _______ ___

This Surveillance shall not normally be performed in MODE 1, 2, 3, or 4. 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: 24 months

a. Synchronizes with offsite power source while loaded with emergency loads upon a simulated restoration of offsite power, (continued)

DIABLO CANYON - UNITS 1 & 2 3.8-8 Unit 1 - Amendment No. 4-5,174 TAB3.8-RX 8 Unit 2 - Amendment No. 435,176

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.1.16 b. Transfers loads to offsite power source; and (continued)

c. Returns to ready-to-load operation.

SR 3.8.1.17 -- NOTE--

This Surveillance shall not normally be performed in MODE 1, 2, 3, or 4. 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 24 months connected to its bus, an actual or simulated Safety Injection signal overrides the test mode by:

a. Opening the auxiliary transformer breaker; and

b. Automatically sequencing the emergency loads onto the DG.

SR 3.8.1.18 ---- NOTE---

This Surveillance shall not normally be performed in MODE 1, 2, 3, or 4. However, this Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

Verify each ESF and auto-transfer load sequencing 24 months timer is within its limits.

SR 3.8.1.19

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

2. This Surveillance shall not normally be performed in MODE 1,2, 3, or 4. However, portions of the Surveillance may be performed to reestablish OPERABILITY provided an assessment determines the safety of the plant is maintained or enhanced.

(continued)

DIABLO CANYON - UNITS 1 & 2 3.8-9 Unit 1 - Amendment No. 435,174 TAB3.8-RX 9 Unit 2 - Amendment No. 435,176

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.1.19 Verify on an actual or simulated loss of offsite power 4

24 months I (continued) signal in conjunction with an actual or simulated Safety Injection 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 sequencing timers,

3. achieves steady state voltage 2 3785 V and < 4400 V,

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.

SR 3.8.1.20 ~NOTE --

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

Verify when started simultaneously from standby 10 years condition, each DG achieves:

a. in

• 10 seconds, speed 2 900 rpm; and

b. in

• 13 seconds, voltage 2 3785 V and

• 4400 V, and frequency 2 58.8 Hz and

• 61.2 Hz.

DIABLO CANYON - UNITS 1 & 2 3.8-10 Unit 1 - Amendment No. 435,174 TAB3.8-RX 10 Unit 2 - Amendment No. 435,176