ML14337A094
| ML14337A094 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point, Palo Verde, Watts Bar, Susquehanna, Columbia, River Bend, Clinton, Comanche Peak  |
| Issue date: | 11/24/2014 |
| From: | Mullaly D Technology for Energy Corp |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 50623 | |
| Download: ML14337A094 (3) | |
Text
a.
41h 11/24/2014 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 1 Part 21 (PAR)
Event#
50623 Rep Org: TECHNOLOGY FOR ENERGY CORP.
Notification Date I Time: 11/18/2014 15:09 (EST)
Supplier: TECHNOLOGY FOR ENERGY CORP.
Event Date I Time: 11/18/2014 (EST)
Last Modification: 11/24/2014 Region:
1 Docket #:
City:
KNOXVILLE Agreement State:
Yes County:
License #:
State: TN NRC Notified by: DONNA MULLALY Notifications: TODD JACKSON R1DO HQ Ops Officer: DANIEL MILLS FRANK EHRHARDT R2DO Emergency Class: NON EMERGENCY HIRONORI PETERSON R3DO 10 CFR Section:
BOB HAGAR R4DO 21.21(d)(3)(i)
DEFECTS AND NONCOMPLIANCE PART 21 GROUP EMAIL PART 21 - LACK OF PROPER POWER SUPPLY INDICATION The following information was summarized from the report obtained from the vendor via facsimile:
Technology for Energy Corporation [TEC] has determined that the Model 1414 Valve Flow Monitoring Systems power supply may not provide proper output voltage contrary to power supply status indicators on the rack. This may result in the power supply not providing necessary power to its associated input sensor. A subsequent loss of the sensor output would result in the inability of the system to indicate any valve flow. Depending on the specific configuration, signals from more than one sensor could be lost on a single failure.
This Model 1414 system design dates back to 1979. TEC has not been made aware of any instances of the described failure mode in the 35 year history of the product design, suggesting that the robustness of power supply design and the users periodic maintenance of the system has provided for acceptable continued operation.
The potentially affected plants include Clinton Unit 1; Comanche Peak Units 1 & 2; Nine Mile Point Unit 2; Palo Verde Units 1, 2, & 3; River Bend Unit 1; Susquehanna Units 1 & 2; Watts Bar Units 1 & 2.
- *
- UPDATED FROM DONNA MULLALY TO DONALD NORWOOD AT 1329 EST ON 11/24/2014 ***
After submitting the original Part 21 notification, TEC discovered that Columbia Generating Station had been omitted from the list of affected plants.
"The following correction should be applied: The potentially affected plants include Clinton Unit 1; Columbia Generating Station, Comanche Peak Units 1 & 2; Nine Mile Point Unit 2; Palo Verde Units 1, 2, & 3; River Bend
11/24/2014 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Unit 1; Susquehanna Units 1 & 2; and Watts Bar Units 1 & 2."
Notified R4DO (Campbell). Notified via E-mail R1DO (Noggle), R2DO (Ehrhardt), R3DO (Duncan) and Part 21 Group.
From:Technology for Energy Corp 865+675+1241 11/2412014 14:10
- 335 P.001/001 November 24, 2014 NRC Operations Center U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Correction to Recent Notification of Possible Substantial Safety Hazard Gentlemen:
By letter faxed on November 18, 2014, TEC reported a possible "Substantial Safety Hazard" in accordance with the requirements of 10CFR Part 21. Event Notification 50623 "PART 21 - LACK OF PROPER POWER SUPPLY INDICATION", posted on November 19, 2014, identified potentially affected plants. While preparing notification letters for the users, we have identified that Columbia Generating Station was omitted from our original list.
The following correction should be applied:
The potentially affected plants include Clinton Unit 1; Columbia Generating Station, Comanche Peak Units 1 & 2; Nine Mile Point Unit 2; Palo Verde Units 1, 2, & 3; River Bend Unit 1; Susquehanna Units I & 2; Watts Bar Units 1 & 2.
If any additional information is required, please contact the undersigned at (865)-966-5856.
Sincerely, Donna J. Mullaly Vice President, Nuclear Division Technology for Energy Corporation 10737 Lexington Drive Knoxville, TN 37932 Cc: William Simpkins, President & CEO Scott Whited, Quality Manager 10737 LEXINGTON DRIVE KNOXVILLE. TN 37932-3294
- PHONE (865) 966-5856 FAX (865) 675-1241 www.tec-usa.COm