ML11273A048
| ML11273A048 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 09/28/2011 |
| From: | Batovsky D ABB |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 46807 | |
| Download: ML11273A048 (5) | |
Text
09128120I11 U.S. Nuclear Regulatory Commission OperationsCenter Event Report eavelI Part 21 (PAR) Event# 46807 Rep Org: ABB INC Notification Date / Time: 05/02/2011 17:12 (EDT)
Supplier: ABB INC Event Date / Time: 05/02/2011 (EDT)
Last Modification: 09/28/2011 Region: 1 Docket #:
City: FLORENCE Agreement State: Yes County: License #:
State: SC NRC Notified by: DENNIS BATOVSKY Notifications: DEBORAH SEYMOUR R2DO HQ Ops Officer: BILL HUFFMAN PART 21 E-MAIL GROUP Emergency Class: NON EMERGENCY 10 CFR Section:
21.21 UNSPECIFIED PARAGRAPH NOTIFICATION OF POTENTIAL DEFECT IN SOLID STATE RELAY 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, ABBwas 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.
0912812011 U.S. Nuclear Regulatory Commission OperationsCenter Event Report Po e 2 Part 21 (PAR) Event # 46807 "ABB is taking, or has taken, the following corrective actions:
- Reworked Qty. 23 units for Brunswick to convert the units to Part Number 611130-Ti1 -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-Ti 3-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."
- ** UPDATE FROM DENNIS BATOVSKY TO JOE O'HARA AT 1529 ON 9/28/11 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-Ti, 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 §1 OCFR 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."
09/28/2011 U.S. NuclearRegulatory Commission OperationsCenter Event Report Pare3 Part 21 (PAR) Event# 46807 Notified R2DO(Nease) and Part 21 GRP via e-mail
ABB CORAL SPRINGS 06:17:36 p.m. 09-28-2011 1 /2 9547555677 ABl September 28, 2011 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 FAX 301-816-5151
Subject:
10 C.F.R. Part 21 Notification of Potential Defect, Solid State Relays - Update of Previous Notification (reference: ML111250239)
Dear Sir or Madam:
This letter provides updated information regarding the notification of a failure to comply with specifications associated with the SS5 Relay, Part Number 611130-TI 3-N, previously submitted May 2, 2011.
The notifying individual is Mr. Dennis Batovsky, Managing Director, ABB Inc. (Protective Relay and Switches) 4300 Coral Ridge Drive, Coral Springs FL, 33065.
'Ihis update adds the following relays as subject components:
Type Part Number Type Part Number 5S4 609901-K1OI-N S53 609902-T203-N SS3G 609901-TI06-N SSSG 609902-T205-N SS3G 609901-T106-NR SS3G 609902-T206-N SS4 609902-KlO1-N SS3G 609902-T301-N SS3 609902-KI03-N SS4G 609902-T304-N SS3 609902-K203-N SS4 609903-KlO1-N SS4G 609902-T104-N SS3G 609903-K106-N SS4G 609902-T104-NR SS4 609903-T201-N SS3G 609902-T106-N SS3 609903-T203-N SS3G 609902-TI06-NR SS14 609903-T210-N SS4 609902-T201-N SS4 609905-T201-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.
As previously reported, ABB was notified by Progress Energy -- Brunswick plant ("Brunswick")
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.
ABB Inc.
4300 Coral Ridge Drive Protective Relay and Switches PHONE (954) 752-6752 Coral Sphings, FL 33065 FACSIMILE (954) 345-5329
9547555677 ABB CORAL SPRINGS 06:17:50 p.m, 09-28-2011 2/2 ABS 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:
9 Affected relay part numbers have been made obsolete to prevent future sales.
o Stopped production of all affected relays until corrective action is implemented.
- The Circuit board assembly, 611856-TI, T2, T3, will be made obsolete and replaced by 611857-Ti, 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 §IOCFR 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.
If you have any questions regarding this notice, please contact ABB Technical Support at 954-752-6700.
Very truly yours, Dennis Batrr'sky ABB Inc.
4300 Coral Ridge Drive Protective Relay and Swftches PHONE (954) 752-6700 Coral Springs, FL 33065 FACSIMILE (954) 345-5329