HL-5404, Provides Description of Changes to Emergency Response Data Sys Data Point Library Reference File in Format Required by NUREG-1394,Rev 1

Provides Description of Changes to Emergency Response Data Sys Data Point Library Reference File in Format Required by NUREG-1394,Rev 1

ML20148E618
Person / Time
Site:	Hatch
Issue date:	05/30/1997
From:	Sumner H SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-1394 HL-5404, NUDOCS 9706030193
Download: ML20148E618 (2)

Text

^ ~

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. ~. l lawis Summer Southern Nuclear

, Vice President operating Company,Inc.

Hatch Project Support 40 Invemess Parkway Post Office Box 1295 I

Birmingham, Alabama 35201 Tel 205992.7279 Fax 205.992.0341 SOUTHERN h

COMPANY l Energy to Serve YourWorld* 8 Docket Nos. 50-321 HL-5404 l

50-365 l May 30, 1997 .

U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Edwin L Hatch Nuclear Plant 10 CFR 50, Appendix E, Section VI.3.a.

Notification of Changes to Emergency Response Data Systent  ;

i Gentlemen:

1 In accordance with 10 CFR 50, Appendix E, Section VI.3.a, a description of changes to l the Emergency Response Data System (ERDS) Data Point Library Reference File is being 1 provided in the enclosure in the format required by NUREG-1394, Revision 1. The _,

changes described were implemented on May 2,1997, as the result ofinstalhng a power i range neutron monitoring system. j

)

Should you have questions in this regard, please contact this office. l Sincerely, 885V) (% )

H. L. Sumner, Jr.

DLM/eb

Enclosure:

Data Point Library Reference File i

cc: Southern Nuclear Operating Company s Mr. P. H. Wells, Nuclear Plant General Manager 1p / j NORMS g U. S. Nuclear Regulatorv Commission. Washington. D. C.

l k QD Mr. K. Jabbour, Licensing Project Manager - Hatch U. S. Nuclear Remdatorv Commissicn. Region H Mr. L. A. Reyes, Regional Administrator Mr. B. L. Holbrook, Senior Resident Inspector - Hatch

. 9706030193 970530 PDR 9'

ADOCK 05000321 PDR llllllll=ll*ll s . #

Enclosure

- Edwin I. Hatch Nuclear Plant DATA POINT LIBRARY REFERENCE FILE 1

4 Date: 5/2/97 ,

Reactor Unit: HT2 ,

Data Feeder: N/A NRC ERDS Parameter: N1 POWER RNG Point ID: APRM Plant Spec Point Desc.: / 'RM AVERAGE READING - % POWER Generic /Cond Desc.: bUC INST PWR RNG ,

Analog / Digital: A Engr Units / Dig States:  %(PERCENT)

Engr Units Conversion: 1% = 1 PERCENT POWER ,

Minimum Instr Range: 0 Maximum Instr Range: 125 Zero Point

Reference:

N/A Reference Point Notes: 124 FISS CHMBS AVERAGED BY 4 APRM NUMACS PROC or SENS: P  ;

Nmnber of Sensors: 4 How Processed: NUMERICAL AVERAGE OF APRM NUMACS Sensor Locations: FISS CHMBRIN 4 CORE QUADS AT 4 HEIGHTS i Alarmffrip Set Points: SCRAM = FLOW BIAS CLAMP = 113.5%; 118%; 15% HI NI Detector Power Supply Cut-off Power Level: DOWNSCALE = 3% <

NI Detector Power Supply Turn-on Power Level: GREATER THAN 3%

Instrument Failure Mode: LOW = 3%; .LE.16 LPRMS; POWER Temperature Compensation For DP Transmitters: N Level Reference Leg: N/A Unique System Dese.:

APRM READINGS ARE NUMERICALLY AVERAGED FOR VALU". QUAL TAGS USED = 0; =2(LESS THAN 3 APRMS AVAIL AND READING NO'I AT l TRIP POINT); =3 NO APRMS AVAIL; =6(APRMS AVERAGE POWER .GE.

. SET POINT). TRIP SET POINTS ARE BIASED IN THE RUN MODE FOR RECIRC FLOW; CLAMP AT I13.5W., TIME DELAY FOR THIS TRIP.

HI POWER TRIP (NO BIAS, NO DELAY) = 118%. UNIT OUT OF RUN MODE SET POINT = 15%. NO QUAL.ITY TAG FOR 118% TRIP.

HL-5404 E-1