ML20066E427
| ML20066E427 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 11/05/1982 |
| From: | Maurin L LOUISIANA POWER & LIGHT CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SCD-37, W3I82-0094, W3I82-94, NUDOCS 8211150169 | |
| Download: ML20066E427 (2) | |
Text
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- NEW ORLEANS. LOUISIANA 70174 * (504) 366-2345 NONdysNU L V. MAURIN Vice President November 5, 1982 Nuclear Operations W3182-0094 Q-3-A35.07.37 Mr. John T. Collins, Regional Administrator, Region IV h[/
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U. S. Nuclear Regulatory Commission
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611 Ryan Plaza Drive, Suite 1000
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Arlington, Texas 76012 j
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SUBJECT:
Waterford SES Unit No. 3
.,g Docket No. 50-382 Significant Construction Deficiency Report No. 37
" Temperature Detectors (RTD's) Failure" Fifth Interim Report
REFERENCES:
- 1) LP&L letter W3K82-0193 dated April 1, 1982
- 2) LP&L letter W3K82-0282 dated August 5, 1982
Dear Mr. Collins:
The original SCD #37 involved a corrosion-generated error in the RCS T-cold signal. The C-E recommended corrective action involved silver-soldering the RTD leads at the terminal strip. Ebasco Design Engineers studied the problem along with the engineers preparing responses to NUREG 0660 "NRC Action Plan Developed As A Result of the TMI-2 Accident" and USNRC Regulatory Guide 1.97
" Instrumentation for Light Water Cooled Nuclear Power Plants to Assess Plant and Environ-Conditions During and Following An Accident." The latter document (1) required a restudy of the original design as to require dual RTD sensors to fit the original C-E built signal RTD sensor thermowelds, (2) required an industry review to find and QA-qualify a vendor of dual RTD sensors. (3) rey-uired purchasing of dual RTD sensors. At the present time, there is a promised delivery date in April, 1983 on the dual RTD sensors.
As a result of the impact of NUREG-0660 and Regulatory Guide 1.97 on the corrective action, submittal of a final report will be delayed until May 27, 1983.
Very truly yours, NH4 cat L. V. Maurin LVM/ MAL:keh
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d Mr. John T. Collins W3I82-0094 Page 2 cc:
- 1) Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555
- 2) Director Office of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D. C.
20555 3)
E. Blake 4)
W. Stevenson
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