ML051870238

TS Page (187) Degraded Voltage Setpoints (Tacs. MC7190/MC7191)

ML051870238
Person / Time
Site:	San Onofre
Issue date:	07/01/2005
From:	NRC/NRR/DLPM
To:
Pham B M/NRR/DLPM/PD-2,415-8450
Shared Package
ML051860411	List: ML051870238
References
TAC MC7190, TAC MC7191
Download: ML051870238 (1)

Text

DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION wzith setpoint 24 months Allowable Values as follows:

a. Degraded Voltage Function:

i. Dropout 2 4123.0 V* I ii. Pickup s 4144.6 V* I SDVS (Sustained Degraded Grid Voltage Signal):

Time delay:

i. 127D & 2.17 seconds.

ii. 162D z 78 seconds and < 128 seconds.

DGVSS (Degraded Grid Voltage with SIAS.

Signal):

Time delay:

i. 127D z 1.83 seconds-and < 2.17 seconds.

ii. 162S k 4.16 seconds and s 4.44 seconds.

iii. 162T. 0.88 seconds and £ 1.62 seconds.

b. Loss of Voltage Function 2 3554 V and

< 3796 V Time delay: 2 0.75 seconds and s 1.0 seconds it 0 V.

• Dropout and pickup values will be set to >4151.D V and £4172.8 V.

respectively, until actions identified in SCE submittal dated May 27, 2005 I are completed.

SAN ONOFRE--UNIT 3 3 .3 -34 Amendment No. 187