Semantic search
| Entered date | Event description | |
|---|---|---|
| ENS 51936 | 16 May 2016 22:39:00 | The following was received by email: Required information as per 10CFR Part 21.21(d)(4) follows: (i) Name and Address of the individual or individuals informing the Commission Luis Sanchez, Vice President United Controls International 205 Scientific Drive NORCROSS, GA 30092 (ii) Identification of the facility, the activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. Thomas & Betts Power Solutions/Cyberex Printed Circuit Boards (Gate Drive Assemblies P/Ns: 41-01-229677 & 41-01-229678, Reference Oscillator Module P/N: 41-01-808901) & Mersen (formerly Ferraz Shawmut) Fuses P/N: A30QS400-4 items were installed in PSEG (Public Service Enterprise Group) inverter unit and resulted in opening of P/N: A30QS400-4 fuses. When the original equipment was installed this issue was not present. (iii) Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect. United Controls International 205 Scientific Drive Norcross, GA 30092 (iv) Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. Opening of the subject fuses prevents operation of the host inverter unit. (v) The date on which the information of such defect or failure to comply was obtained. March 17,2016 (vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for, being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations in this Part. The following is a compilation of UCI supplied items with like part numbers as the subject components. Only the printed circuit boards identified by the end-user (supplied under purchase orders 4500576271 (Qty. 1), 4500728702 (Qty. 1), and 4500625591 (Qty. 1)) along with the subject fuses supplied under purchase orders 4500810474 (Qty. 10) and 4500772093 (Qty. 6) are considered to possibly be affected by the end-user's reported issue. (vii) The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action. UCI is not capable of performing additional evaluation of the subject printed circuit boards because UCI does not have the capability to simulate the in-service condition of these items. UCI suggests that the end-user perform additional evaluations with the subject printed circuit boards installed in their training inverter unit. UCI has requested that the end-user supply additional fuses supplied under purchase orders 4500810474 and 4500772093 for evaluation of current carrying performance since the fuses already provided were open. (viii) Any Advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licensees. None (ix) In the case of an early site permit, the entities to whom an early site permit was transferred. Not Applicable. |
| ENS 51816 | 22 March 2016 15:11:00 | The following information is a synopsis of information received via E-mail: On February 20, 2016 United Controls International issued a Return Material Authorization (RMA) request to First Energy - Perry Nuclear Power Plant. The RMA was issued to request the return of general purpose fuses of part number OT15 that were provided to First Energy - Perry Nuclear Power Plant under purchase order 45225736. The customer identified a fuse that had intermittent electrical continuity during resistance checks. The customer performed an evaluation which included dissection of the subject fuse and the cause of the issue was identified as being due to a lack of or inadequate solder connection of the fuse element to the fuse ferrules. If you have any questions or wish to discuss this matter or this report, please contact: Wesley Hickle Engineering Manager whickle@unitedcontrols.com 770-496-1406 x 165 |
| ENS 51285 | 4 August 2015 10:29:00 | The following information was excerpted from the email provided by the reporting organization: On April 2015, United Controls International (UCI) performed dedication testing on time delay fuses AJT25 and AJT60 for First Energy - Perry Nuclear Power Plant under purchase orders 45469886 and 45469450, respectively. The subject fuses were being tested per United Controls Standard dedication testing which excludes seismic and environmental testing requirements. Both fuses, AJT25 and AJT60 opened during their current clearing tests at times that are within their respective clearing time tolerance ranges but their Smartspot labels did not change color, as required, to indicate the fuses cleared. For fuse AJT25, eight fuses have been tested, including one (1) fuse from the first lot which comprises 30 fuses (with manufacture date 09/15 (9th week of 2015)) and seven (7) fuses from the second lot which comprises 32 fuses (with manufacture date 10/15). Five (5) fuses were tested for current clearing at 135% of the fuse rated current, two (2) fuses were tested for current clearing at 200% of the fuse rated current and one (1) fuse was tested for current clearing at 500% of the fuse rated current. For fuse AJT60 with manufacture date 06/15, only one (1) fuse was tested from the received lot of fuses which comprises 24 fuses for current clearing time at 135% of the fuse rated current. Further testing of the AJT60 fuses was not performed since a trend was already observed in regard to the fuses AJT25 failure. UCI has returned all received fuses in the three (3) received lots. Mersen (Ferraz/Shawmut/Mersen) has then performed evaluation on the 30 AJT25 fuses with manufacture date of 9/15 (9th week of 2015), confirmed that the seven (7) fuses that UCI has tested were open and conducted testing on six (6) among the remaining 23 fuses. Testing by Mersen revealed that only two out of the six fuses had their Smartspot indicator that went off to indicate that the fuses cleared. Upon further examination by Mersen; it is believed that over tightening of the crimping jars during installation and crimping of the ferrule endcaps is the cause of the Smartspot indicator's malfunction. The fuses are Ferraz Shawmut/Mersen part numbers AJT25 and AJT60. UCI recommends the purchaser to include a requirement for suppliers to provide fuse with manufacture date after 6/30/15 where the manufacturer has performed corrective action to prevent this issue from recurring. Point of Contact: Divya Paidy, Engineering Manager, dpaidy@unitedcontrols.com, (770) 496-1406, ext. 106, |
| ENS 50013 | 9 April 2014 13:37:00 | The following is an excerpt from a fax received from United Controls International (UCI): The purpose of this letter is to provide the NRC with a report in general conformity of the requirements of 10CFR Part 21.21. On March 19, 2013, United Controls Issued an Interim letter regarding a discovered manufacturing change in the contact assembly of General Electric SBM series switches. Since 2009, the manufacturing process of the contact assembly of the SBM switch contacts has changed to have the whole assembly (contact holder and contact tip) tin plated. This was discovered while investigating an SBM switch that failed at a customer site due to high contact resistance across closed contacts. The finding that there was a manufacturing process change in the SBM switches lead to further discussions and evaluations regarding equipment of similar design. General Electric SB1 series switches and HEA series relays use the same contact arrangement design as the SBM series switches. The contact assemblies of the SB1 switches and HEA relays are subject to the same tin plating process of the contact assembly as previously reported on the SBM series switches. At this time, UCI is unable to evaluate if this manufacturing change may have an adverse effect on the capability of the General Electric SB1 switches and GE HEA relays to perform in their intended safety related application. UCI will notify the affected Utilities to our findings. The affected Part Number, Utility, Order Number and Quantity is listed below: Part Number 12HEA61B23SX2; Utility CFE; Order 700372018; Quantity 3 Part Number 12HEA61C236X2; Utility FPL Turkey Point; Order 02260642-34; Quantity 2 Part Number 12HEA61C237; Utility OPPD; Order 180520; Quantity 4 Part Number 12HEA61C238X2; Utility OPPD; Order 180520; Quantity 3 Part Number 12HEA61C237; Utility OPPD; Order 185929; Quantity 2 Part Number 12HEA61C237X2; Utility OPPD; Order 188314; Quantity 2 Part Number 12HEA63C239X2; Utility FPL St. Lucie; Order 02260642-41; Quantity 8 Part Number HEA61C234X2; Utility Antung; Order PP100204; Quantity 2 Part Number HEA61C244X2; Utility OPPD; Order 179664; Quantity 5 Part Number HEA61C241X2; Utility OPPD; Order 179664; Quantity 2 Part Number HEA63C239X2; Utility FPL St. Lucie; Order 02260642-103; Quantity 3 Part Number 12HEA61C238X2; Utility OPPD; Order 194686; Quantity 4 Part Number 16SB1BB339STS2P; Utility Duke Oconee; Order 156606; Quantity 11 Part Number 165BlFB2C85SWM2Y; Utility Nextera Seabrook; Order 2259825-3; Quantity 1 Part Number 16SB1LB2C01LSM2P; Utility CFE; Order 700327408; Quantity 3 Utility CFE is the Comisi�n Federal de Electricidad (Mexico) and Utility Antung is located in Taiwan. If you have any questions or wish to discuss this matter or this report, please contact: Jim Garrison Engineering Manager, Seismic and Equipment Qualification JGarrison@unitedcontrols.com 770-496-1406 X 103 The 10CFR Part 21.21 received on March 19, 2014 is EN #49940., |
| ENS 49940 | 21 March 2014 08:46:00 | The following is an excerpt from a fax received from Unified Controls International (UCI): ...there was a significant manufacturing process change to the General Electric SBM series switches in 2009. The high resistance across switch contacts in the GE SBM switches could lead to a failure of the switch to change state when required. Concerns have been raised regarding tin plated movable contacts used for make or break service and in use without protective lubrication. UCI is not capable to complete an evaluation of the affect that this change may have on in storage SBM switches or already installed SBM switches that were provided to the customers on the purchase orders listed in section (below). UCI does not know the storage conditions, in service environmental conditions or in service cycling rates of the switches or how the each of these items may affect the change in contact resistance. Each affected customer needs to evaluate their in storage and in service switches and determine if the change in contact material could possibly create a safety hazard and effect the ability of the switches to perform in their safety related application. The applicable purchase orders are: Duke Energy, Purchase Orders: 131116,133980, 147875,129193,130989 (Non-Safety Related), 133920, 148974 (Non-Safety Related), 152090 (Non Safety Related), 133972, 169525 Antung Trading Company, Purchase Order: PP120210 CFE, Purchase Order: 700327408 Fluor, Purchase Order: A3PB-6-0016-00Q1 |
| ENS 49932 | 19 March 2014 15:36:00 | The following was received via fax: This report documents the supply of faulty Logic Power supply assembly printed circuit boards for a Cyberex 20KVA Model AC Power Supply. These power supplies have the incorrect strap installed on the transformers of Cyberex P/N (Part Number) 30-80-56620 which potentially can lead to the transformer being loose and can cause failure of the power supply. Per the manufacturer, the band should have been made of stainless steel but the bands on the installed transformers were made of carbon steel and a corrosion resistant coating. The details of the potential failure of the power supply and the root cause are being evaluated and will be documented in the final report. UCI (United Controls International) reviewed all the orders that were supplied to the customers and determined that two UCI orders are affected and the customer was notified on the day the issue was identified. Part Number 90-41-974313 (UCI serial numbers 03996-01 -0001, -0002, -0003) and P/N 41-01-596701 (UCI serial numbers 03967-03 -0001, -0002, -0003) supplied to Public Service Electric and Gas (PSEG) are affected.
The following was received via fax: This engineering evaluation is being written to document the supply faulty Power supplies for the 20KVA Cyberex Model AC Power supply with the Cyberex part numbers 41-01-596701 and 90-41-974313. SUMMARY: UCI issued a certificate of conformance to PSEG for S/N: 003967-03-0001 thru 0003 on December 22nd 2012, to be used in safety related applications where seismic is the only design basis event. During the pre-installation testing in February 2014, PSEG identified loose transformers and a loud noise frequency whine and the power supply boards were returned to UCI. Below table lists the details of the power supplies that were returned to UCI. On February 2nd 2014, UCI has initiated part 21 evaluation to determine the root cause for the failure and evaluate if a defect existed. During the evaluation, it was determined that the transformer strap band installed on Cyberex P/N 30-801-56620 transformer at the location T501 should have been made of stainless steel but the strap band on these power supplies was made up of zinc plated carbon steel. Due to this material difference, the transformer warped and it was evident it became loose. The installation of the incorrect strap bands on the transformer apply to only one batch of manufactured PCB assemblies. The manufacturer addressed this issue since this was discovered and this was verified by UCI. UCI determined that the order along with the boards that failed pre-installation testing, were the only boards affected by this issue. The customer PSEG was notified on March 13th 2014 and the initial notification letter to NRC was sent on March 19th 2014. The above mentioned power supplies were recalled from PSEG and two power supply boards of S/N: 003996-01-0002 and 003996-01-0003 are currently at UCI for evaluation and rework. However the S/N: 003996-01-0001 board has not yet been returned to UCI by PSEG. UCI performed an XRF analysis on one of the affected power supplies per part number lot and on UCI control samples to confirm and compare the material of the transformer strap bands. EFFECT OF THE DEFECT: The installation of the incorrect transformer strap band resulted in the loosening of the transformer from the band. When installed in the system, the transformer might become loose and cause a loud whining noise. The installation of the incorrect material band on the transformer might lead to loosening of the transformer and causes whining noise when installed but no functional test failure will be observed. However, the loose transformer affects the safety function of the item during or after seismic event due to loss of structural integrity. CORRECTIVE ACTIONS PERFORMED: A UCI corrective action # CAR 14-14 was opened to document the issue found and the corrective and preventive actions taken. As a result, UCI will create two new Commercial Grade dedication procedures for P/N: 41-01-596701 and 90-41-974313 to include the material verification of the transformer bands installed on these power supplies. These new procedures will be used for the existing and future orders of these part numbers. All the affected power supply boards except S/N: 003996-01-0001 are currently at UCI undergoing rework to replace the transformer of the incorrect material strap band with a transformer of the correct (stainless steel) strap band. After rework, dedication will be performed per new dedication procedures as specified above. Notified R1DO (Burritt) and Part 21 Group via email. |