3F0103-07, Special Report 02-02, Waste Gas Decay Tank Explosive Gas Monitoring Instrumentation Inoperable for More than 30 Days
| ML030240377 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 01/16/2003 |
| From: | Franke J Progress Energy Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 3F0103-07 | |
| Download: ML030240377 (3) | |
Text
Progress Energy Crystal River Nuclear Plant Docket No 50-302 Operating License No DPR-72 Ref: 10CFR50.36a January 16, 2003 3F0103-07 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
Subject:
Crystal River Unit 3 - Special Report 02-02, Waste Gas Decay Tank Explosive Gas Monitoring Instrumentation Inoperable For More Than 30 Days
Dear Sir:
As required by Crystal River - Unit 3's (CR-3's) Offsite Dose Calculation Manual (ODCM),
Section 2.14, Special Reports, Attachment A contains Special Report 02-02. This Special Report documents that the Waste Gas Decay Tank (WGDT) explosive monitoring instrumentation, required by Section 2.16, was inoperable for more than 30 days and includes the reasons for the inoperability and the schedule for corrective action.
A new regulatory commitment is listed in Attachment B.
If you have any questions regarding this submittal, please contact Mr. Sid Powell, Supervisor, Licensing and Regulatory Programs at (352) 563-4883.
Sincerely,
- 3. A. Franke Plant General Manager JAF/rmb Attachments:
A. Special Report 02-02 B. List of Regulatory Commitments xc: NRR Project Manager Regional Administrator, Region II C Senior Resident Inspector Progress Energy florida, Inc. ' "
Crystal River Nuclear Plant 15760 W. Powerline Street Crystal River, FL 34428
U.S. Nuclear Regulatory Commission Attachment A 3F0103-07 Page 1 of 1 SPECIAL REPORT 02-02 WASTE GAS DECAY TANK EXPLOSIVE GAS MONITORING INSTRUMENTATION INOPERABLE FOR MORE THAN 30 DAYS This Special Report is being submitted in accordance with the Crystal River Unit 3 (CR-3) Off site Dose Calculation Manual (ODCM), Revision 25, Specification 2.16. The purpose of this report is to provide the details of the Waste Gas Decay Tank (WGDT) Explosive Gas Monitoring Instrumentation (Waste Gas Analyzer (WDGA-1)) being inoperable for more than thirty days, the actions taken, and the expected date of return to service.
DESCRIPTION On November 19, 2002, CR-3 discovered that the Waste Gas Analyzer (WDGA-1), WGDT explosive gas monitoring instrumentation, was inoperable.
ACTIONS TAKEN The system operation is continuing with grab samples collected and analyzed once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> during normal operation and once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> during degassing operations.
REASONS FOR INOPERABILITY During troubleshooting of the WDGA-1, the following problems were documented:
The cycle timer was not working correctly resulting in the sensor not being purged properly. Re-programming of the cycle timer failed to correct the inoperability.
The installed sensor was replaced with a new sensor and all connections were verified to be satisfactory. This failed to correct the inoperability.
All other Progress Energy (PE) troubleshooting steps failed to determine the cause for the inoperability.
The analyzer unit was shipped to the vendor for further troubleshooting and evaluation.
The vendor determined that the problem was with a digital board that they could not repair or replace.
CURRENT ACTIONS Progress Energy is purchasing a replacement analyzer.
EXPECTED RETURN TO SERVICE The system is expected to be returned to service prior to March 15, 2003.
U.S. Nuclear Regulatory Commission Attachment B Page 1 of 1 3F0103-07 LIST OF REGULATORY COMMITMENTS The following table identifies those actions committed to by Progress Energy in this document.
Any other actions discussed in the submittal represent intended or planned actions by Progress Energy. They are described to the NRC for the NRC's information and are not regulatory commitments. Please notify the Supervisor, Licensing & Regulatory Programs of any questions regarding this document or any associated regulatory commitments.
COMMITMENT DUE DATE The system is expected to be returned to Prior to March 15, 2003 service.