ML12275A465

Meeting September 27, 2012 - Handouts

ML12275A465
Person / Time
Site:	Prairie Island
Issue date:	09/27/2012
From:	Office of Nuclear Reactor Regulation
To:
Wengert T
References
TAC ME9468, TAC ME9469
Download: ML12275A465 (3)

Text

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.1.1 Verify correct breaker alignment and indicated 7 days power availability for each required path.

SR 3.8.1.2 ----------------------------NOTES-------------------------

1. Performance of SR 3.8.1.6 satisfies this SR.

2. All DG starts may be preceded by an engine prelube period and followed by a warmup period prior to loading.

3. A modified DG start involving idling and gradual acceleration to synchronous speed may be used for this SR in consideration of manufacturer's recommendations. When modified start procedures are not used, the time, voltage, and frequency tolerances of SR 3.8.1.6 must be met.

Verify each DG starts from standby conditions and 31 days achieves steady state voltage ~ 4Q27~ V and

~ 4:tO_O~ V, and frequency ~ 59.5§%;& Hz and

~ 60 . 5.~ Hz.

Prairie Island Unit 1 - Amendment No. -l-§.& ~

Units 1 and 2 3.8.1-6 Unit 2 - Amendment No. -l49 ~

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.6 ----------------------------NOTE--------------------------

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

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

a. In ~ 10 seconds, voltage ~ 3740 V and frequency ~ 58.8 Hz; and

b. Steady state voltage ~ 4021J.+4G V and

~ ~ V, and frequency ~ 59.5~ Hz and ~ 60.5&J..d. Hz.

SR 3.8.1.7 Verify each DG does not trip during and following a 24 months load rejection of:

1. Unit 1 ~ 650 kW; and

2. Unit 2 ~ 860 kW.

SR 3.8.1.8 Verify each DG's automatic trips are bypassed on an -------NOllE-----

actual or simulated safety injection signal except: SR 3.0.2 interval extension (1.25

a. Engine overspeed; times the interval) applies

b. Generator differential current; and to this SR

c. Ground fault (Unit 1 only).

24 months Prairie Island Unit 1 - Amendment No. -l-§.& +94 Units 1 and 2 3.8.1-8 Unit 2 - Amendment No. -l49 ~

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1 .9 ----------------------------N OTES-------------------------

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

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

~ 0.85. However, if grid conditions do not permit, the power factor limit is not required to be met. Under this condition the power factor shall be maintained as close to the limit as practicable.

Verify each DG operates for 2:: 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s: 24 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:

Unit 1 2:: 2832 kW, and

< 3000 kW Unit 2 2:: 5400 kW, and

~ 5940 kW; and

b. For the remaining hours of the test loaded:

Unit 1 2:: 2500 kW, and Unit 2 2:: 4860 kW; and

c. Achieves steady state voltage 2:: 4.Q21-3-f4.0 V and ~ 4400#8Q V; and frequency 2:: 59.5.§.8.:.8. Hz and ~ 60.5e-I:4 Hz.

Prairie Island Unit 1 - Amendment No. 15S 189-l%

Units 1 and 2 3.8.1-9 Unit 2 - Amendment No. 149 178 ~