ML15089A437

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Part 21 - Dual Alarm Modules That May Contain Faulty Diodes in Single State Relays
ML15089A437
Person / Time
Site: Beaver Valley, Indian Point, Kewaunee, Prairie Island, Surry, North Anna, Turkey Point, Ginna, Farley  
Issue date: 03/20/2015
From: Chermak V, Meils D, Weinstein M
Curtiss Wright Flow Control Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation, NRC Region 1
References
48798
Download: ML15089A437 (9)
v • d • e


Text

03/20/2015 U.S. Nuclear Regulatory Commission Operations Center Event Report Page I Part 21 (PAR)

Event #

48798 Rep Org: CURTISS WRIGHT FLOW CONTROL CO.

Notification Date / Time: 03/01/2013 11:40 (EST)

Supplier: CRYDOM, INC Event Date / Time: 03/01/2013 (EST)

Last Modification: 03/20/2015 Region:

1 Docket #:

City:

DANBURY Agreement State:

No County:

License #:

State:

CT NRC Notified by: MICHAEL WEINSTEIN Notifications: ART BURRITT R1DO HQ Ops Officer: CHARLES TEAL RANDY MUSSER R2DO Emergency Class: NON EMERGENCY JAMNES CAMERON R3DO 10 CFR Section:

PART 21 GROUP EMAIL 21.21(d)(3)(i)

DEFECTS AND NONCOMPLIANCE PART 21 - DUAL ALARM MODULES THAT MAY CONTAIN FAULTY DIODES IN SINGLE STATE RELAYS The following is excerpted from a facsimile received from Curtis Wright:

"Crydom Inc., the sole supplier to Scientech of D4D07 Solid State Relays (SSRs) since before 2009, has informed Scientech that SSRs provided with date codes between 0908 (August 2009) and 1004 (April 2010) may have included faulty diodes which resulted in reduced reliability (early failure) of their SSRs.

"The mode of failure is that the module output may not be able to maintain voltage sufficient to activate its external load. It appears that this failure occurs randomly after some duration of operation, typically weeks or months. No common cause has been found.

"Scientech screens components for infantile failure by burning-in modules for a minimum of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> prior to final test. There were no SSR failures during burn-in of potentially affected modules; therefore burn-in was not an effective screen for this issue.

"Prior to January 2013, Scientech did not track SSRs by date code. In establishing conservative boundaries for product shipped with suspect SSRs, Scientech can be certain that no suspect SSRs were shipped in Scientech products prior to August 2009 (the earliest suspect date code). It was determined in September 2012 that Scientech did not have any SSRs with a date code of 2010 or earlier in inventory or work-in-progress. Scientech can therefore determine that products shipped after September 2012 do not contain suspect SSRs."

Affected components:

DAM801, a Dual Alarm Module, manufactured by Scientech, Model DAM801 (/1 optional),

0312012015 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 032/05US ula euaoyCmiso pratos etrvn Reor a.

Part number EIP-E287PA-1 SAM801, a Single Alarm Module, manufactured by Scientech, Model SAM801 (11 optional),

Part number EIP-E289PA-1 DAM502, a Dual Alarm Module, manufactured by Scientech, Model DAM502, Part number EIP-E297DD-1, -2, -3 SAM502, a Single Alarm Module, manufactured by Scientech, Model SAM502, Part number EIP-E297DD-4 DAM503, a Dual Alarm Module, manufactured by Scientech, Model DAM503, Part number EIP-E304DD-1, -2, -3 SAM503, a Single Alarm Module, manufactured by Scientech, Model SAM503, Part number EIP-E304DD-4, -20 DAM504, a Dual Alarm Module, manufactured by Scientech, Model DAM504, Part number NUS-A131PA Affected Facilities:

Beaver Valley Farley Ginna Indian Point 2/3 Kewaunee North Anna Prairie Island Surry Turkey Point

  • *

The following information was received via fax. Only information that has changed is being attached below.

"Thirteen plants were notified during the original notification. On March 10, 2015, one affected plant reported that when one SSR failed, its output consisted of high frequency noise at a reduced duty cycle. This noise caused overheating and failure of resistors in an RC filter connected to the alarm module output. Plants experiencing SSR failures should check downstream elements for possible consequential damage. Scientec has not received any other reports of this condition. The condition was reevaluated and the Part 21 evaluation was revised. The evaluation concluded that this newly identified condition does not impact the original defect as reported."

Notified the R1DO (Dental), R2DO (Desai), R3DO (Roach), and Part-21 Group (via e-mail).

Mar 20 2815 16:14:S7 SSUV30S216

-> US HRE Vincent chermak Page 001 CUR TIMS =

WRI1GHT Fax Cover Sheet To:

Fax Number:

3018165151

Subject:

Update to Event Number 48798: 10 CFR Part 21 Notification, Dual Alarm Modules and Single Alarm Modules From:

"Chermak, Vincent" <vchermak@curtisswright.com>

Fax#:

855-362-1771 Date:

03/20/15 03:58:19 PM Total Pages:

7 including this cover page Memo:

Take Care, Vince Chermak, SSBB, PMP Director, Quality Operations Scientech, Nuclear Division Curtiss-Wright Corporation 1350 Whitewater Idaho Falls, ID 83402 T: 208-497-3366 1 M: 208-313-3562 vchermak@curtisswright.com http://scientech.cwfc.com/

This e-mail and any files transmitted with it are proprietary and intended solely for the use of the individual or entity to whom they are addressed. If you have reason to believe that you have received this e-mail in error, please notify the sender and destroy this email and any attached files. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the Curtiss-Wright Corporation or any of its subsidiaries. Documents attached hereto may contain technology subject to government export regulations. Recipient is solely responsible for ensuring that any re-export, transfer or disclosure of this information is in accordance with applicable government export regulations. The recipient should check this e-mail and any attachments for the presence of viruses. Curtiss-Wright Corporation and its subsidiaries accept no liability for any damage caused by any virus transmitted by this e-mail.

Mar 2a 201S 16:15:1S 0553Sfin2lag

-> US NRC VinCCA ChErMdk Page 002 This electronic communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify sender immediately by phone, destroy this communication and all copies.

Mar za ZIS 16:152:3 8553056216

-> US NRC Vincent Chermak Page 883 FAX From: Alois Vincent Chermak Scientech Director of Quality Operations

Subject:

Update to Event Number 48798: 10 CFR Part 21 Notification, Dual Alarm Modules and Single Alarm Modules Contents: Update letter to US Nuclear Regulatory Commission Document Control Desk Number of Pages Including this Cover Sheet: 5 Should you have any questions regarding this matter, please contact:

Robert Queenan Scientech Director Instrumentation and Controls Curtiss-Wright Nuclear Division raueenan~curtisswriaht.com Tel 208-497-3458, Cell 208-403-3547

Mar 20 2015 16:15:35 BSS30f56216 CURTISS -

WRIGHT

-> US NRC Vincent CherMak Page 004 Instn.imentation & Contmol Division 1350 Whitowrater Drkve.

IWaft Fat1s, 0 83402 (208) 497.3333 March 20, 2015 Attn: Document Control Desk US Nuclear Regulatory Commission Washington. D.C. 2(i555-000 I SUBJECf: Update to Event Number 4879: 10 CFR Part 21 Notification, Dual Alarm Modules and Single Alarm. Modules

Dear Madcam or Sir:

The purpose of this letter is to update the Nuclear Regulatory Commission about the defect in Solid State Relays (SSRs) supplied by Cidom, Inc., that was reported on March J, 2013. The updated information is italkized at the bottom of page 3 of 4. No other technical information has changed.

(i) Name and address of' the individual or individuals inmtfoinn the Commission.

AV Chermak Scientech Director of Quality Curtiss-Wright Nuclear Division 1350 Whitewater Drive Idaho Falls, ID 83402 Daniel E Meils Scientech General Manager Curtiss-Wright. Nuclear Division 29399 US 1hwy 19 North, Suite 320 Cleamwater, FL 33761 Lfj~~~ýK -mr ofeo tpni iQsi jcjjhbi lityqi gjvvwthite1.

Ij4ja~

w1 ich-Lail (, to colnipL or Contains a detect.

DAM80I. a Dual Alarm Module.n manufactured by Scientech, Model DAM801X(! optional),

Part number EIP-E287PA-1 SAM80 1, a Single Alarm Module, manufactured by Scientech, Model SAM80I(/1 optional),

Part number EIP-E289PA-1 DAM502, a Dual Alarm Module, manufactured by Scientech, Model DAM502, Part number EIP-E297DD-J, -2. -3 SAMS02. a Single Alarm Module, manufactured by Scientech, Model SAM502.

Part number EIP-E297DD-4 DAM503. a Dual Alarm Module, manufactured by Scientech. Model DAM503.

Part number EIP-E304DD-1, -2, -3 SAM503, a Single Alarm Module. manufhctured by Scientech, Model SAM503, Part number EIP-E304DID-4, -20 1)Li ctfctos h firm~

LIM npk'jpg the basic c mofi mtjqti Lkch fa,,oýapy coin,ýdfL Scientech. a business unit of Curtiss-Wright Flow Control Corporation 1350 Whitewarer Drive Idaho Falls. ID 83402

Mar 20 2015 16:16:83 855305216U

-> US NRC Vincent CherMdk Page HOS CURTISS -

WRIGHT Pagoe 2 of 4

(.iyNaturc ofthedefect or it'can to oom

,dhe _af'etv hazard which i. creted or could be created Iy defect or fhilure to cqjjMv.

This is an update to Event Number 48798, reported on 3/1/2013, to identify' that a failing solid state relay (SSR) may cause damage to downstream components.

Coydom lic, the sole supplier to Scientech of D4D07 SSRs since before 2009. informed Scien.tech that SSRs provided with date codes between 0908 (August 2009) and 1004 (April 2010)may have included faulty diodes which resulted in reduced reliability (early failure) of their SSRs.

The mode of failure is that the module output may not be able to maintain voltage sufficient to activate its external load. It appears that this failure occurs randomly after some duration of operation, typically weeks or months, No common cause has been found.

Scientech screens components ibr infantile failure by burning-in modules fir a minimum of48 hours prior to final test. There wcre no SSR failuirs during bum-in of potentially affected modules: therefore, bum-in wws not an effective screen for this issue.

Prior to January 2013. Scientech did not track SSRs by date code. In establishing conservative boundaries for product shippedwith suspect SSRs, Scientech can be certain that no suspect SSRs were shipped in Scientech products prior to August 2009 ithe earliest suspect date code). It was determined in September 2012 that Scientech did not have any SSRs with a date code of 2010 or earlier in inventory or work-in-progress. Scientech can therefore detertnine that products shipped after September 2012 do not contain suspect SSRs.

SERIAL NUMBER vs DATE CODE RISK According to Crydom, the issue existed on their SSR production line from August 2009 thru April 20 10. The corresponding date codes are 0908 thru 1004 (format: YYMM), Accordingly, SSRs received at Seientech prior 8/1/09 do not include suspect date codes; this includes SSR PO 09-561 and earlier.

SSR Received Dates Relative Risk Before 7/28/09 Least risk 7/29/09.. 11/9/09 None Purcliased 11/10/09 - 7/li/10 Highest risk 7/2/10,-, 12/27/10 None Purchaised 12/28/10 - 1.1/9/11 Medium risk 11/10/11 - 5/7/12 None Purchased 5/8/12 - 11/27/1.2 Lo)w risk CONFIGURATION RISK When the SAM/DAM800 or SAM/DAM502 Configuiation Codes 5 or 6 (and not 3 or 4) are used. the relay output is selected instead of the SSR. output, and the module is =p at risk a..".nfigurvdn.

(All current SAM/DAM801, SAM/DAM503. and SAM/DA.M504 have the SSR output mode only.)

Scientech 135OWhitewater Drive

  • Idaho Falls, ID 83402 -Phone: 208.497.3333
  • Fax: 208.874.4266

Mar 20 2015 16:16:35 OSS3056216

-> US KRC Vincent CherMdk Page 00fi CIR TISS -

WRIGHT Page 3 of 4 MThe date X1. which the infonnation of such defct or' filure to Co.w 1, was obtained.

Submitted for evaluation 02/06/2013; evaluation completed 03/01/2013. Additional information added 3/20/2015 eo~llponfrllthsc iuets li~cdhr. ";fln, supplhed for, or max be SUlplicd for, manu.iacturcd, or being maoitictured for one or more facilitics or activities subiect Lo the ra,,ulations in this pai:.

,PotentialI Ffetd fPte4 f15 affeted, d Wh~y~Ai&

.~

.Sfttea Beaver Valley I

0 Ginna 72 0

HB Robinson 105 3

Indian Point 2 30 0

indian Point 3 9

0 Kewaunee 23 0

Prairie Island 68 0

Starry 242 0

Turkey Point 241 7

tvii The coýrrectve action which h. -

n i.s boo wibl tkn the nanc of the individualg orzo iza-.tion responsible for the actvon: and the le*imh of timie that has bceen or will be taken to complete the action.

1. Scientech has determined that it currently has no SSRs with suspect date codes in inventory or work-in-progress and has established receipt inspection criteria to reject SSRs with suspect date codes.
2. Scientech has notified plants with potentially affected safety related units (completed 03/01/2013).
3. Scientech sent affected plants a list of potentially affected safety related modules by part number, serial number and purchase order (completed 03/01/2013).
4. Scientech is communicating with individual utilities the risk categories their modules fall into.
5. Scienteeh established a SharePoint site on March 13, 2013 to facilitate open communication between the utilities and Scienrech. 'The SharePoint Site includes the following informaion:

Module Serial Numbers by Crvdom SSR PO Risk This file lists the Serial Ntunbers, and includes the Scicntcch Job Number, Plant, Client PO, and Part Number. It is color coded by Relative SSR Risk based on the likelihood that the module contains SSRs from the affected date codes. If more than one risk level applies, the higher risk is indicated.

.A.l advice ralaited to thteJg f_

filu"i to Cooutithe iac.litv. activity., )r *.ic oC2onert that hIa

~ is einnsr wil gj+/-rign to purchasers5 or Lmqse~

Advice was provided in NWS Instruments Technical Bulletin Volume 47.

3/20/2015 (rdcate: Tihireen plants wtere notified during the original notification. On March 10o', 2015, one afftcred plant reported that when one SR. fbitled, its output consisled of lhgh frequency noise at a reduced duty cývcle, TIhis noise caused overhieCating andfMbifhrc of resistors in a R( f/iter connected to the alamn module output.

Planto experiencing SSRblures should check downstream clement/sLbr possible consequential damage.

S'cientech has not received aily other reports ofthis condition. 1he conrditon was reevaluated ond the Part 21 evaluation was revised. The evaluation concluded that this newly ident fned condition does not impact the original de/&ft as reported.

Scientech 1350Whitewater Drive

  • Idaho Falls. ID 83402 - Phone: 208.497.3333
  • Fax: 208.874.4266

Mar 20 ZlS 16:17:26 S5535J21i

-> US HRE Vincent CherMak Page 007?

CURTISSI

-WRIGH*T Page 4 of 4 ix In the Case of mi rly site permit-the entiti w

to whom am early site nit was tranfe"ntd.

Not applicable.

Should you have any questions regarding this matter, please contact:

Robert Queenan Scientech Director Instrnmentation and Controls Curtiss-Wright Nuclear Division rciucnmfildc utrtisswrjghjt.com Tel 208-497-3458, Cell 208-403-3547 Sincerely, Daniel E Meils Scientech General Manager Curtiss-Wright Nuclear Division dmeilst!'.cu rttisswrilhtntom Tel 727-669,3115, Cell 727-644-8359 Scientech.1350 Whitewater Drive

  • Idaho Falls. ID 83402, Phone: 208.497.3333 - Fax: 208.874.4266
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