ML19327A533

Responds to IE Bulletin 80-17.Provides Manual & Automatic Scram Test Results.Scram Discharge Vol Vent Lines Verified & Emergency Operating Procedure Changes Completed

ML19327A533
Person / Time
Site:	Hatch
Issue date:	07/28/1980
From:	Widner W GEORGIA POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
0086, 86, IEB-80-17, TAC-42218, TAC-42219, NUDOCS 8008060339
Download: ML19327A533 (3)

Text

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REFERENCE:

Region II - Suite 3100 RII: JP0 101 Marietta Street, NW 50-321/50-366 Atlanta, Georgia 30302 I&E Bulletin 80-17 ATTENTION: Mr. James P. O'Reilly Gentlemen:

The following information is submitted in response to I&E Bulletin 80-17:

In accordance with Item 2 of the Bulletin, manual and automatic scrams were performed for Unit 1 on July 20, 1980 and July 21, 1980, respectively.

The scram discharge volume responded properly, and no problems were noted.

The data requested are given in Attachment 1.

In accordance with Item 3, SDV vent lines were verified to be functional at the conclusion of the above tests.

In addition, significant amounts of residual water were not found to be present in the SDV and associated piping.

In accordance with Items 4a through 4d, necessary changes to the plant emergency operating procedures of both units have been completed and reviewed by Georgia Power Company and General Electric Company.

In accordance with Item 6a, notification as requested began on July 12, 1980, for both units.

In addition, the requirements of Item 6b have been incorporated into the necessary procedures for both units.

Should you have any questions in this regard, please contact this office.

Very truly yours, Q/ N

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,//. A. Widner REB /mb

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Enclosure Sw n to and sub cribe before e this 28th day of July, 1980.

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-Notary PubliC Notary Public. Georgia. dure a large f

My Commission Expres Sept. 20.1983 xc: Director of the Office of Inspection and Enforcement

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vfirector of-the Division of Operating Reactors, Office of Nuclear Reactor Regulation g 008060 339

1 ATTACHMENT 1 HATCH UNIT 1 SCRAM TEST RESULTS Bulletin 80-17 Manual Auto Item #

Description Scram Scram 2a All rod insert. time, sec apx. 3 apx 7.6 North HCU bank (14 rods):

(individual rod scram times):

avg. 90% insertion time, sec 2.460 2.425 max. 90% insertion time, sec 2.936 2.952 min. 90% insertion time, sec 2.242 2.208 South HCU bank (14 rods):

avg. 90% insertion time, sec 2.541 2.605 max. 90% insertion time, sec 3.169 4.175 min. 90% insertion time, sec 2.202 2.217 2b Scram solenoid valve solenoids yes yes deenergized upon receipt of scram signal 2c Scram air relieved through yes yes backup valves Backup valves remained open yes yes during presence of scram signal 2d Time for scram initiation to: (sec) closure of not drained alarm switch 40.5 40.8 closure of rod withdrawal block switch 60.65 59.5 closure of reactor scram switch (avg) 14.76 14.93 2e (measured on 7-22-80) vent valve F010A opening time, sec 32.1 vent valve F010B opening time, sec 5.5 drain valve F011 opening time, sec 24.7 vent valve F010A closing time, sec 42.4 vent valve F010B closing time, sec 45.75 drain valve F0ll closing time, sec 49.6 2f-Delay from scram initiation to closure of:

vent valve F010A 43.45 43.95 vent valve F010B 41.05 40.95 drain valve F0ll 49.85 48.58 29 SDV water analysis results:

turbidity, NTU 13 12 filterable solids, ppm 50 20 SiO, ppb 136 292 2

2h time from scram reset to: (min: sec)

North SDV bank scram swtiches clear 8:15 8:24.2 South SDV bank scram switches clear 12:17.3 12:34.4 l

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. SDV..& associated piping free of-residual water following scram-yes yes 2j:

10 sec delay on scram reset' functioning properly yes yes 14 Comparison of results OK OK b

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