ML100621331
| ML100621331 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 02/24/2010 |
| From: | Hale R United Controls International |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML100621331 (7) | |
Text
I/I United Controls International 5 139-S. Royal Atlanta Drive Tucker, Georgia 30084 (770) 496 1406 tel (770) 496 1422 fax February 24, 2010 U.S. Nuclear Regulatory Commission Document Control Desk Washington D.C. 20555-0001 Subj ect: I OCFR2 I Reporting of Defects and Non-Compliance Thomas & Betts Printed Circuit Board P/N 90-41-9743 13 The enclosed report addresses a reportable notification for a Thomas & Betts Printed Circuit Board P/N 90-41-974313.
A cop), of the report has been mailed to our affected nuclear customers.
Please sign below, acknowledging receipt of this report, and return a copy to at the address above or via fax to (770) 496 1422 within 10 worldng days after receipt.
Sincerely, Robert B. Hale President Enclosure Report 20100224_Notification_90-41-974313, 4 pages Received by Date www..unitedcontrols.com
United Controls International 5139 S. Royal Atlanta Drive Tucker, Georgia 30084 (770) 496 1406 tel (770) 496 1422 fax 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE COMPONENT:
SYSTEM:
CONCLUSION:
REPORT ID:
Thomas & Betts Printed Circuit Board P/N 90-41-974313 Inverter-Logic Power Supply Board Defect reportable in accordance with I OCFR21 20100224 Notification 90-41-974313 File: 20100224_Notification_90-41-974313.doc Reviewed By:
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Approved By:
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Quality Assurance www.unitedcontrols.com
20100224_Notification 90-41-974313 Page 2 of 6 COMPONENT:
Thomas & Betts Printed Circuit Board Thomas & Betts P/N: 90-41-974313 PURPOSE:
This report documents the installation of a faulty logic power supply board for Cyberex 20 KVA Inverter model AC.
SUMMARY
On or around April 23rd, 2009, PSEG Nuclear LLC at Hope Creek Nuclear Station notified United Controls International (UCI), that they had encountered a problem with a Logic Power Supply circuit board (p/n: 90-41-974313) after installing it in their safety related inverter. The circuit board had been supplied by UCI under previous purchase order 4500304127. This circuit board was a Logic Power Supply printed circuit board used in a Cyberex 20 KVA Inverter model AC, which is now owned. and supplied by Thomas & Betts (TNB) and manufactured by their sub-contractor, RBB Systems.
Upon inspection, PSEG determined that a jumper was missing from the circuit board, by comparison to the originally removed board. Additionally a second logic power supply circuit board (not installed in the plant) was also determined to be missing the same jumper. This issue was initially evaluated by UCI in June of 2009 and determined not to be a reportable defect and an isolated event. However, after a similar issue was identified with the same manufacturer (TNB), UCI has determined that this issue should be documented as a 1 OCFR21 reportable defect.
The circuit board, with the missing jumper was installed in Hope Creek's safety related inverter and resulted in incorrect voltages, which preVented the inverter from being placed into service. It is therefore not likely that this board could be installed and left in the parent component, and subsequently.
placed into service due to post installation maintenance testing. However, if the board were to be installed, while missing the jumper, the inverter would not operate properly and would be considered inoperable.
The cause of this issue was due to an incorrect bill of materials (BOM) for the circuit board at the manufacturing location.
AFFECTED USERS:
PSEG Nuclear LLC - Hope Creek Nuclear Power Station According to UCI records, a total of 10 Logic Power Supply circuit boards (TNB p/n 90-41-974313) were supplied by TNB to UCI.,One of these boards was a sample board and remains at UCI. The other nine boards were all shipped to PSEG at Hope Creek Nuclear Power Station. The current status of these nine circuit boards is shown in table I below.
United Controls International
20100224-Notification-90-41-974' ) 13 Page 3 of 6 Table 1 Part number UCI S/N Comments.
Identified by PSEG to be missing jumper. Returned to UCI in 90-41-974313 1808-1-1 June of 2009. Jumperwas installed and board was retested and returned to PSEG.
Identified by PSEG to be missing jumper. Returned to UCI in 90-41-974313 2496-6-1 June of 2009. Jumper was'installed and board was retested and returned to PSEG.
90-41-9743 13 2710-2-1 Shipped to PSEG on 3/18/08. Indeterminate as to whether jumper is installed or not at this time.
90-41-974313 3047-15-1 Shipped.to PSEG on 9/30/08. Indeterminate as to whether jumper is installed or not at this time.
90-41-974313 003451-07-0001 Shipped to PSEG on 9/25/09. Verified by UCI that jumper was correctly installed on board.
90-41-9743 13 003451-07-0002 Shipped to PSEG on 9/25/09. Verified by UCI that jumper was correctly installed on board.
90-41-974313 003451-07-0003 Shipped to PSEG on 9/25/09. Verified by UCI that jumper was correctly installed on board.
90-41-9743 13 003255-02-0001 Shipped to PSEG on 5/19/09. Verified by UCI that jumper was missing on board.
S90-41-974313 003255-02-0002 Shipped to PSEG on 5/19/09. Verified by UCI that jumper was missing on board.
United Controls International
20100224 Notification 90-41-974313 PPage 4 of 6 CORRECTIVE ACTIONS Preventive Actions Taken:
The manufacturer, Thomas & Betts, has corrected the Bill of Materials (BOM) to show the jumper installed on this circuit board. Additionally, UCI has enhanced its inspection procedure for these boards by performing a component level inspection of each board against the BOM.
Corrective Actions Taken:
Of the nine potentially affected circuit boards shown in the table above:
- 1.
Two circuit boards have been returned to UCI by PSEG and have had the jumpers added and, retested. These two were returned to PSEG.
.2.
Three circuit boards have been verified to have the jumper correctly installed.
Corrective Actions to be taken:.
- 1.
There are four suspect circuit boards that have been shipped to PSEG (Hope Creek Nuclear Station) that need to be inspected for the correct jumper per attachment 1. If found to be missing the jumper, then the boards need to be returned to UCI for jumper installation and retesting.
ATTACHMENTS
- 1. Jumper inspection procedure for Cyberex logic power supply board p/n: 90-41-974313 United Controls International
20100224_Notification 90-41-974313 Page 5 of 6 Attachment I Page I of 2 JUMPER INSPECTION PROCEDURE FOR CYBEREX LOGIC POWER SUPPLY BOARD P/N: 90-41-974313
- 1. See figure I below for a picture of the Cyberex logic power supply board, pin: 90-41,-9743' 3.
- 2. Inspect the board for a jumper at location "WJ". See figure 2 below.
- 3. If jumper at location "WJ" is missing, as shown in figure 3, then notify UCI and an PVIA will be issued for the repair.
gure 1, Logic rower" buppiy uircun ioaru -/IN4: y-ý,1-+o ii United Controls International
20100224 Notification 90-41-974313 Page 6 of 6 Attachment I Page 2 of 2 JUMPER INSPECTION PROCEDURE FOR CYBEREX LOGIC POWER SUPPLY BOARD P/N: 90-41-974313 1hgure.5,.1umper --WJ " missing United Controls International