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| Entered date | Event description | |
|---|---|---|
| ENS 52041 | 24 June 2016 13:20:00 | The following information was excerpted from a received licensee fax: On April 26, 2016, ABB confirmed a customer complaint regarding a 60Q relay received with an internal short circuit. The cause was determined to be a manufacturing deviation from specification. Records show a total of 53 suspect relays were provided to 2 customers (Prairie Island and Tennessee Valley Authority). Based on the nature of the deviation, any installed relay would have failed upon application of power in the relay. Therefore, the primary concern is that any relay, either in storage or installed with no power applied, may have this defect and will create a system malfunction upon power application. If you have any questions regarding this notice, please contact the ABB Technical Support at (954) 752-6700. |
| ENS 51190 | 29 June 2015 17:16:00 | The following information was provided by ABB via fax: This letter provides notification of a deviation for Class IE COM-5 (Long Time Overcurrent Relays) styles 1326D81A01, 1326D81A02, and 326D81A09. On April 30, 2015, ABB received a customer complaint regarding a COM-5 relay received with a bracket (ABB Part Number #3518A17H01) detached from the relay frame assembly (ABB Part Number #1456C92G01). ABB's investigation determined that the bracket, which is spot-welded to the frame, can be detached from the frame using a relatively small amount of force. If the weld fails, the Indicating Contactor Switch (ICS) unit held by the bracket could inadvertently close, causing a false trip. The affected frame assemblies were manufactured by ABB on 9/25/2014 (Lot#: 45001414115) by an operator who incorrectly followed the inspection procedure required to verify the integrity of the resistance spot welds. ABB records show a total of 11 suspect relays were provided to two customers as detailed in attachment 1 (BELOW). ABB does not have the capability to perform the evaluation to determine if a defect exists, thus we are notifying the purchasers or affected licensees of this determination so that they may evaluate the deviation, pursuant to 10 CFR 21.21(b). ABB recommends that the affected licensees evaluate their specific application and determine whether the deviation described in this notice affects their design basis. If it is determined that it does, the licensees should contact ABB to determine appropriate corrective action. ABB is conducting the following actions: - ABB has improved existing inspection processes used to verify resistance spot welds. - ABB has performed an extent of condition evaluation and determined that this issue is limited to this process. If you have any questions regarding this notice, please contact ABB Technical Support at +1-954-752-6700 or+ 1-800-222-1946 Very truly yours, Dennis Batovsky - Managing Director ATTACHMENT 1 Customer List for 1326D81A01, 1326D81A02 and 1326D81A09 COM-5 Relays Exelon Business Services Corporation, Chicago, IL - Clinton Nuclear Station ORDER / CUSTOMER PO / DATE / STYLE / SERIAL NO. / QTY ENW0716 / 00531032 Rev 001 / 9-26-2014 / 1326D81A01 / 12910-12912 / 3 ENW0742 / 00541813 Rev 002 / 3-3-2015 / 1326D81A01 / 12938, 12939 / 2 Westinghouse Electric Corporation, New Stanton, PA ORDER / CUSTOMER PO / DATE / STYLE / SERIAL NO. / QTY VEP10980 / 4500653421 Rev 1 / 12-8-2014 / 1326D81A02 / 12928, 12929 / 2 VEP10976 / 4500653398 Rev 1 / 12-8-2014/1326D81A02 / 12925-12927 / 3 VEP11168 / 4500657304 rev 1 / 1-20-2015 / 1326D81A09 / 12919 / 1 |
| ENS 50691 | 17 December 2014 17:38:00 | Recent seismic testing results of the above Class 1E KF under-frequency relays uncovered inaccurate qualification by similarity to the tested relay 1328D72A03 (qualified in 2011). The subject relays do not meet the previously published ZPA rating, but meet a rating of 1.7g in accordance with IEEE C37.98-1987 requirements. Records show a total of 37 suspect relays were provided to seven customers. ABB does not have the capability to perform the evaluation to determine if a defect exists, thus we are notifying the purchasers or affected licensees of this determination so that they may evaluate the deviation, pursuant to 10 CFR. 21.21(b). If you have any questions regarding this notice, please contact the ABB Technical Support 954-752-6700. Dennis Batovsky Managing Director
This letter is an update to the Part 21 Notification submitted on December 17, 2014, 'Potential defect regarding KF relay zero period acceleration (ZPA) rating'. ABB reminds all licensees, that per ABB KF Under-frequency relays, Instruction Leaflet 41-503.21A effective April 1997, 'the normally closed contact at terminal number 2 should not be used for critical circuits due to a low fragility rating'. ABB (has) conducted the following actions: -ABB has performed an initial extent of condition evaluation to determine if this situation exists in other electromechanical IE qualified relays. There are no additional findings at this time. -ABB issued a corrective action to improve existing engineering qualification procedures that govern qualification by similarity. If you have any questions regarding this notice, please contact the ABB Technical Support 954-752-6700. Notified R1DO (Burritt), R2DO (Sykes), R3DO (Cameron), R4DO (Kellar) and Part 21 Group (via email).
The following is a synopsis of the updated information received: The seismic testing results for 1328D72A01 and 1328D72A02 Class 1E KF Under-frequency relays met a ZPA rating of 1.72g. This was previously communicated as 1.7g. In lieu of previously communicated actions, future orders for 1328D72A01 and 1328D72A02 Class 1E KF Under-frequency relays will be only available at the published ZPA rating of 1.72g. Customers requiring higher ZPA will need to procure Class 1E KF style 1328D72A03 or 1328D72A04, as appropriate. Notified R1DO (Bickett), R2DO (Lopez), R3DO (Peterson), R4DO (Azua) and Part 21 Group (via email). |
| ENS 49813 | 10 February 2014 17:36:00 | The following Part 21 Report was received via facsimile: On December 12, 2013, ABB determined that that its Instruction Leaflet 41-682.11 (effective September 2002) for the subject relays may be deficient with regards to the external diagram connection. With the relay connected per the typical connections shown in the instruction leaflet and the relay having verified a synchronous condition for a period of time ranging from several minutes to hours, the main element contact identified as 'CVX-1' may become stuck in the closed position. Again, this situation is dependent on each customer's control power connection scheme and may be more prevalent in certain applications, such as fast bus transfer or tie breaker applications. In cases where the contact remains closed, it may result in an unwanted connection of two asynchronous systems when the command to connect them is issued, leading to equipment damage and possible bodily injury or death. We will be updating our instruction leaflet in February 2014, to reflect the addition of an interposing contact in the control circuit to prevent this condition. ABB's records indicate that 15 relays were supplied to Exelon (Clinton Nuclear Station), 4 relays were supplied to Duke Energy (Oconee Nuclear Station) and 10 relays were supplied to ABB d.o.o. (Slovenia). ABB has determined, as of the date of this notification, that it does not have the capability to perform an evaluation to determine if a defect exists, and therefore in accordance with 10 CFR 21.2l(b), is making this notification simultaneously to our customers so they may evaluate the deviation or failure to comply, in accordance with 10 CFR 21(a). |
| ENS 49372 | 20 September 2013 16:35:00 | The following information was obtained from ABB, Inc. via facsimile: This notification is submitted in accordance with 10 CFR 21.21(d)(3)(ii). Solid State Circuit Shield Relays (27, 40, 47, 60, 81, 25V, 27/59, 27D, 27H, 27N, 46D, 46Q, 47H, 50H, 59G, 87M) and Power Shield (K-Line) Relays containing CMOS technology Integrated Circuits (IC's) have been shipped with Certificates of Conformance (CoC's) that incorrectly state that they are qualified to 100,000 rads. On July 23, 2013, ABB discovered that the above radiation tolerance value had been incorrectly communicated to customers due to a reference to an incorrect document. ABB failed to update the reference document following the Part 21 notification dated July 28, 1994. ABB's investigation showed that this issue dates back to the beginning of production of solid state relays in the Coral Springs facility in 2009 when the CoC format changed to include this information. As such, the CoC's that ABB provided incorrectly identified the radiation tolerance as 100,000 rads rather than 1,000 rads. All qualification documents and future CoC's will be reviewed to ensure proper record of radiation tolerance is maintained. This review is to be completed by Dec 31, 2013 ABB will notify the affected customers for the listed relays that they should review their applications which require total radiation tolerance greater than 1,000 rads to determine the effects of a possible device malfunctioning on the system. ABB does not have the capability to perform an evaluation to determine if a defect exists, and therefore in accordance with 10 CFR 21.21(b), we are making this notification simultaneously to our customers so they may evaluate this issue, pursuant to 10 CFR 21(a). Any customers finding that (ABB's) qualification level is insufficient will be advised to contact (ABB's) customer support line at 1-800-222-1946 or 1-954-752-6700 for discussion of remedial action. This information was provided by: Dennis Batovsky Managing Director ABB, Inc. 4300 Coral Ridge Drive Coral Springs, FL 33065 |
| ENS 48872 | 1 April 2013 17:29:00 | This letter is to notify you of a potential issue concerning the ZPA (Zero Point Acceleration) rating for our three phase relay type SSC-T. During a Customer Audit (week of February 4, 2013 by ABB Inc., Florence, S.C.), we discovered that our Class 1E Certification database showed the ZPA rating of our three phase SSV -T and SSC-T relays was 5.6g, while our most recent qualification (dated June 14, 2012) determined that the ZPA rating was 4.79g. A review of our Purchaser records for the last ten years indicates that one (1) affected relay was sold to WESCO: SSC-T relay completed 10/5/2007, order number 3365-960825 and serial number 11835. ABB does not have the capability to perform the evaluation to determine if a defect exists, so we are informing the purchaser of this determination so that they may evaluate the deviation or failure to comply, pursuant to 10CFR 21.21(a). ABB recommends that the affected licensee evaluate their specific application and determine whether the deviation described in this notice affects their design basis. If the licensee determines that it does, the licensee should contact ABB to determine appropriate corrective action. If you have any questions regarding this notice, please contact ABB Technical Support at 954-752-6700. |
| ENS 47975 | 29 May 2012 17:07:00 | The following report was received via fax: During the commercial grade dedication process for a unit that was returned for repair, the unit was found to be in nonconformance with ABB specifications. The ABB specifications require that two (2) particular components, integrated circuits (ICs) of plastic construction, are replaced with 2 ICs of ceramic construction during the assembly process. The chips found on the harmonic filter circuit board (HF Board) of the relays were of plastic construction. While plastic ICs are approved for use in commercial relays, they have not been qualified for safety-related applications. Relays in this condition will function normally in mild environments, but have not been qualified for harsh environments, or for elevated radiation environments. The affected solid state relays are 27N and 59G shipped between August 1, 2010 and October 15, 2010. Eighteen (18) Relays (Material number: 211T4175-HF-1E) were sold to ABB Florence who in turn shipped the same to Detroit Edison's Fermi 2 Power Plant. * * * UPDATE FROM TAUZER TO SNYDER AT 1730 EDT ON 4/1/13 * * * The supplier has concluded that the solid state relays with the plastic encapsulate are qualified for Class 1E applications. ABB Coral Springs is providing this letter to close the interim report and notice of deviation from specification requirements associated with Solid State Relays 27N and 59G dated May 29, 2012 (Event ML12153A030). As stated in the interim report, one of the actions to be completed was the qualification and testing of representative plastic ICs to confirm acceptability and use in safety-related applications. This letter is a follow-up notification that the plastic IC qualification and testing is complete, and based upon the results, we have concluded that the ICs with the plastic encapsulate are qualified for Class 1E applications specific to the subject relays. Affected customers have been notified. Notified R3DO (Daley) and Part 21 Reactors (Email). |
| ENS 47089 | 22 July 2011 13:55:00 | The following information was received via fax and email: Subject: 10 C.F.R. Part 21 Notification of Deviation regarding KF Protective Relay - Defective Capacitor On June 2, 2011, Constellation Energy reported that two relays caused unnecessary breaker trips three weeks after the relays were placed in service. Their investigation found that the Under-frequency Trip setpoint had drifted from the pre-set value of 57.77 Hz to 60.316 and 61.2 Hz. Our investigation determined that both relays contained a defective capacitor (ABB Part Number #606B340H07). The capacitor should have measured 0.225 �f (micro-farads) ? 3%. Actual measured value of the capacitors was 0.195 �f and 0.208 �f. A failure analysis conducted by Arizona Capacitor Corporation identified the capacitors were incorrectly constructed with metalized film, instead of oil impregnated paper/film/oil, as required by ABB design specifications. These capacitors were manufactured by Aldon Corporation, with a date code of April 4, 2008. Per 10 C.F.R. 21.21 (b), we do not have the capability to perform the evaluation to determine if a defect exists, and will notify the purchasers or affected licensees within five working days. Currently, we believe there are a total of six suspect relays, provided to three customers. The three customers are: WESCO located in Murrysville, PA, KF Relay Style 1328D72A02A, S/N 12027, 12028A, Qty 2, ABB Inc located in Florence, SC, KF Relay Style 1328D72A02A, S/N 12253, Qty 1 and, ABB Ltd located in Cheonan, South Korea, KF Relay Style 1328D72A01, S/N 12025, 12026, 12366, Qty 3. |
| ENS 46807 | 2 May 2011 17:12:00 | Identification of the subject component is as follows: SS5 Solid State Relay, Part Number 611130-T13-N. The instantaneous trip function of the relay may actuate at 16 times normal current instead of the design value of 24 times normal current. On 3 March, 2011, ABB was notified by Progress Energy - Brunswick plant that spare relays being tested prior to being placed in service were tripping at approximately 4700 amps instead of the expected 7200 amps. Brunswick stated that their applications require having a short time delay for all faults up to the 24 times instantaneous value is critical for system design and compliance with their design basis and licensing documents. Subsequent evaluation by ABB Engineering determined that the relay works as intended. However, if there is a fault at the same time the relay is energized, the instantaneous unit becomes more sensitive, and will operate at lower than expected current level. For conditions where a fault occurs downstream of an associated in-service circuit breaker, the relay works as intended, for single phase, phase to phase, and three phase fault conditions. Sales records show that only four orders of the subject relay were ever shipped, and each of these four orders was with Progress Energy, with the orders all being processed via ABB Medium Voltage Service, in Florence, SC. The order numbers and quantities are as follows, with the first three orders being shipped from ABB Coral Springs, FL and the fourth order shipped from ABB Allentown, PA: AA027730 qty. 10, AA319168 qty. 7, AA319152 qty. 7, and PC06895 qty. 3. ABB is taking, or has taken, the following corrective actions: - Reworked Qty. 23 units for Brunswick to convert the units to Part Number 611130-T11-N, by removing the target circuit. This prevents the pre-mature trip at lower current. - One additional unit has been retained at ABB Coral Springs to support continued testing to confirm the fault condition. - Three units have not been accounted for, and are assumed to be in service. (Purchased by ABB Florence for Progress Energy Brunswick 4/11/08, Sales Order PC06895, Relay Serial Numbers 85948, 85949, and 85950) - The 611130-T13-N relay has been obsoleted to prevent future sales. - ABB Engineering is determining whether other similar relays of different ratings have a similar defect. Action to complete by July 1, 2011. ABB does not have the capability to perform the evaluation to determine if a defect exists, so we are informing the purchasers or affected licensees of this determination so that the purchasers or affected licensees may evaluate the deviation or failure to comply, pursuant to � 10CFR 21.21(a). ABB recommends that the affected licensees evaluate their specific application and determine whether the deviation described in this notice affects their design basis. If the licensee determines that it does, the relays may be returned to ABB for conversion by removing the target circuit.
This update information regarding the notification of a failure to comply with specifications associated with the SS5 Relay, Part Number 611130-T13-N. The instantaneous trip function of the relay may actuate at 16 times normal current instead of the design value of 24 times normal current. Subsequent evaluation by ABB Engineering determined that the relay works as intended. However, if there is a fault at the same time the relay is energized, the instantaneous unit becomes more sensitive, and will operate at lower than expected current level. For conditions where a fault occurs downstream of an associated in-service circuit breaker, the relay works as intended, for single phase, phase to phase, and three phase fault conditions. ABB Engineering determined that other similar relays of different ratings may have a similar deviation from technical specifications. ABB is taking, or has taken, the following corrective actions: - Affected relay part numbers have been made obsolete to prevent future sales. - Stopped production of all affected relays until corrective action is implemented. - The Circuit board assembly, 611856-T1, T2, T3, will be made obsolete and replaced by 611857-T1, T2, T3 accordingly, which do not exhibit this deviation. - ABB acknowledges the response time for this report is beyond the required reporting window and has initiated a separate corrective action to address this problem. ABB does not have the capability to perform the evaluation to determine if a defect exists, so we are informing the purchasers or affected licensees of this determination so that the purchasers or affected licensees may evaluate the deviation or failure to comply, pursuant to �10CFR 21.21 (a). ABB recommends that the affected licensees evaluate their specific application and determine whether the deviation described in this notice affects their design basis. If the licensee determines that it does, the licensee should contact ABB to determine appropriate corrective action. Notified R2DO(Nease) and Part 21 GRP via e-mail |