ML051870239

1 TS Page (196) Degraded Voltage Setpoints (Tacs. MC7190/MC7191)

ML051870239
Person / Time
Site:	San Onofre
Issue date:	07/01/2005
From:	NRC/NRR/DLPM
To:
pham b m, nrr dlpm lpdiv-2, 301-415-8450
Shared Package
ML051860411	List: ML051860407 ML051870238 ML051870239
References
TAC MC7190, TAC MC7191
Download: ML051870239 (1)

Text

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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 with setpoint 24 months Allowable Values as follows:

a.- Degraded Voltage Function:

i. Dropout ; 4123.0 V*

ii. Pickup s 4144.6 V*

SDVS (Sustained Degraded Grid Voltage Signal):

Time delay:

i. 127D s 2.17 seconds.

ii. 162D > 78 seconds'and 5 128 seconds.

DGVSS (Degraded Grid Voltage with SIAS Signal):

Time delay:

i. 127D k 1.83 seconds and s 2.17 seconds.

ii. 162S > 4.16-seconds and s 4.44 seconds.

iii. 162T 0.88 seconds and s 1.62 seconds.

b. Loss of Voltage Function 2 3554 V and s3796 V -

Time delay: 2 0.75 seconds and s 1.0 seconds at 0 V.

• Dropout and pickup values will be set to ;4151.-DV and s4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.

I II.

I SAN ONOFRE--UNIT 2 3.3-34 Amendment No. 196

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