ML080920663

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TMI-1 Emergency Response Data System Data Point Library Changes
ML080920663
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 03/21/2008
From: Atherholt D
AmerGen Energy Co, Exelon Corp
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
5928-08-20060
Download: ML080920663 (2)


Text

AmerGen.

AmerGen Energy Company, LLC Telephone: 717-948-8000 An Exelon Company Three Mile Island Unit 1 Route 441 South, P.O. Box 480 10CFR50, Appendix E Middletown, PA 17057 5928-08-20060 March 21, 2008 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Three Mile Island Nuclear Station, Unit I (TMI 1I)

Facility Operating License No. DPR-50 NRC Docket No.50-289

Subject:

TMI-1 Emergency Response Data System Data Point Library Changes The purpose of this letter is to update one of the transmitted data points (C4028) in the Data Point Library for the Emergency Response Data System (ERDS) for Three Mile Island Nuclear Station, Unit I (TMI- 1).

ERDS is a direct, near real-time, electronic data link between the computer data system used by TMI-I and the NRC's Operations Center which provides for the automated transmission of a limited data set of selected parameters.

The attachedERDS data point information for TMI-I is being submitted in a format consistent with the guidance specified in NUREG- 1394. The change was approved on February 20, 2008, and was limited to correcting the reference computer ID number. There were no physical or programming changes involved in this revision.

If you have any questions or require additional information, please do not hesitate to contact us.

Respectfully, David W. Atherholt Manager: - Regulatory Assurance Three Mile Island Nuclear Station, Unit I

Attachment:

Data Point Library Reference File (Point C4028) cc: S. J. Collins, Administrator, Region 1, USNRC P.J. Bamford, USNRC, Project Manager, TMI Unit I D. M. Kern, UNSRC Senior Resident Inspector, TMI Unit I File No. 08024 "/

PPC-3001-102 Revision 2 February 20, 2008 Plant Process Computer System Page 41 of 56 DATA POINT LIBRARY REFERENCE FILE DATE: 2/20/08 REACTOR UNIT: TM1 DATA FEEDER: N/A NRC ERDS PARAMETER: COND A/E RAD POINT ID: C4028 PLANT SPEC POINT DESC: Rad Monitor RM-A5G GENERIC/COND DESC: Condenser Air Ejector Radioactivity ANALOG/DIGITAL: A ENGR UNITS/DIG STATES: CPM ENGR UNITS CONVERSION: Log Conversion of Raw Millivolts MINIMUM INSTR RANGE: 10.0 MAXIMUM INSTR RANGE: 1.0 x 106 ZERO POINT

REFERENCE:

N/A REFERENCE POINT NOTES: N/A PROC OR SENS: S NUMBER OF SENSORS: 1 HOW PROCESSED: N/A SENSOR LOCATIONS: Condenser Vacuum Pump Exhaust ALARM/TRIP SET POINTS: N/A UNIQUE SYSTEM DESC: Beta scintillation detector. Sensitivity is 4.00E7 CPM Ci/cc (based on Xe-133); 8.70E7 CPM Ci/cc (based on KR-85).

Revision 2