ML20108E043

Rev 5 to Procedure HNP-1-2092, Seismic Instrumentation Triggered

ML20108E043
Person / Time
Site:	Hatch
Issue date:	02/22/1983
From:	GEORGIA POWER CO.
To:
Shared Package
ML20100P367	List: ML20100P364 ML20108E043 ML20108E045 ML20108E049 ML20108E057 ML20108E061 ML20108E066 ML20108E071 ML20108E074 ML20108E092 ML20108E098
References
HNP-1-2092, NUDOCS 8412140163
Download: ML20108E043 (3)

Text

GEORGIA POWER COMPANY HATCH NUCLEAR PLANT n

I\

i PROCEDURE

_' Seismic Instrumentation Trig 2ered PROCEDURE TITLE HNP-1-2092 PROCEDURE NUMBER OR erations RESPONSIBLE SECTION SAFETY RELATED ( ) NON-SAFETY RELATED ( X)

_____.. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . r________________.. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . ._______.

APPROVED APPROVED REV. DESCRIPTION DEPT. PLANT DATE HEAD ER

______.. _ _ _ - _ - _ _ - _ _ _ _ _ _ _ _ _ _ _ ..___________ ____. ._ ____ _ _ _ _ _ _ . . _ _ J. _ .

5 Page 1&2 ,

4 l

HNP-9 8412140163 841129 PDR ADOCK 05000321 V PDR

AMmovAL PRCC&QURE peQ E. l. HATCH NUCLEAR PLANT HNP- 1-2OT See Title Page aev e omre 5 Georgia Pbwer -

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( See Title Page 'o 1 of 2 f SEISMIC INSTRUMENTATION TRIGGERED

( A. CONDITION One or both the following alarms is received on panel H11-P657.

NOTE Seismic Instrumentation Triggered Alarm is shared with Unit 2.

D. ACTION

1. SEISMIC INSTRUMENTATION TRIGGERED (Setpoint: 0.O')S e )

indicates an earth tremor has occured and the recording accelerometers have been triggered.

a. Check Seismic Acceleration Play-back recorder L51-V6R-R601 on panel H11-D701 to determine Magnitutie of tremor.

b. Shut down reactor per HNP-1-1025 if tremor exceeds OBE -

[ O. 08cr horizontal and/or 0.054& vertical.

c. Monitor plant operating parameters for abnormalities.

, d. Conduct visual surveillance of plant structures for abnormalities, and report findings to Shift Supervisor. I

e. Notify plant management.

f. Ref er to FNP-4858.

g. Depending on the magnitude of the earthquake, refer to HNP-4420 for notification of an unusual event. l

2. SEISMIC PEAK SHOCK RECORDER HIGH G LEVEL (Setpoints in tables below) indicates earthquake accelerations approaching or exceeding DBE of 0.15& and peak shock recorder L51-Vbe--N105 is triggered. Amber light on Annunciator L51-VbC-R620, panel H11-PG01, indicates earthquake accelerations on Unit 1; red lights indicate earthquake accelerations on Unit 2.

O I x

~ ~ ~ , .

E. l. HATCH NUCLEAR PLANT HNP-1-2092 see Title Page ,,u,s. ~

DATE 5

~~

GeorgiaPbwer O see Ti+1 e e-

, ,, y ANNUNCIATOR PANEL L51- VbC-RCE SETPOINTS E/W AND N/S VERTIC_AL HERTZ G FORCE lERTZ G FORCE  ;

2.5 O.2G G.4 O.15  !

4 0.48 10.1 0.15 6.4 0.28 12.7 0.12 12.7 0.15 16 0.10

a. Check magnitude of earthquake at annunciator L51-V6C-R620 on panel H11-P701.

b. Notify plant management.

c. Refer to HNP-4858.

d. Depending on the magnitude of the earthquake, refer to g HNP-4420 for notification of an unusual event.

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