ML17223A198

Part 21 Notification - Eaton/Cutler Hammer A200 Series Starter

ML17223A198
Person / Time
Site:	Susquehanna
Issue date:	07/21/2017
From:	Jennings J Susquehanna
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
52867
Download: ML17223A198 (5)

Text

0712112017 U.S. Nuclear Regulatory Commission Operations Center Event Report ***Page I Part 21 (PAR) Event# 52867 Rep Org: SUSQUEHANNA NUCLEAR LLC Notification Date I Time: 07/21/2017 10:40 (EDT)

Supplier: EATON/CUTLER HAMfvlER Event Date I Time: 07 /14/2017 16:46 (EDT)

Last Modification: 07/21/2017 Region: 1 Docket#:

City: BERWICK Agreement State: Yes County: License#:

State: PA NRC Notified by: JASON JENNINGS Notifications: ANNE DeFRANCISCO R1DO HQ Ops Offi~er: VINCE KLCO PART 21/50.55 REACTORS EMAIL Emergency Class: NON EMERGENCY 10 CFR Section:

21.21 (d)(3)(i) DEFECTS AND NONCOMPLIANCE PART 21 NOTIFICATION - EATON/CUTLER HAMMER A200 SERIES STARTER The following information was received by the licensee via email:

"Pursuant to 10 CFR 21, this is a non-emergency notification by Susquehanna Nuclear, LLC concerning a defect in an Eaton/Cutler Hammer A200 series starter that failed while in service at Susquehanna Steam Electric Station.

The failed starter was manufactured by Eaton Corporation in 2014 and purchased by Susquehanna from .AZZ/NLI as part of an MCC bucket assembly. The starter failed with its contacts stuck in the energized state when it was de-energized. A failure analysis identified the contactor sticking to be due to the pole faces of the coil laminations and those of the armature laminations adhering to one another at normal operating temperatures. There was residue/material on the pole faces which closely matched Polydimethylsiloxane (PDMS) and silicone grease. One of the characteristics of PDMS is. that at cooler temperatures it is more of a solid consistency, and at higher temperatures it becomes more viscous and tacky.

"A previous Part 21 report submitted by Curtiss-Wright QualTech NP (Event Notification 51611) in December 2015 provided notification of Eaton/Cutler Hammer A200 series starters failures due to silicon based mold release that remained on the molded parts and would come between the moving (magnet) and fixed armatures. The Part 21 stated that when heated for extended period of time, the material would become sticky causing anywhere from a minor delay in opening to a frozen closed condition. Eaton/Cutler Hammer determined that the silicone mold release was first introduced into the manufacturing facility in May 2008 and used periodically until October 2012. According to Eaton/Cutler Hammer, any starters manufactured after January 1, 2013 should be silicon mold release free.

"Following the failure of the 2014 starter at Susquehanna, Eaton Corporation performed an investigation and reconfirmed that silicon mold release was banned from molding production in October 2012 and has not been used

0712112017 U.S. Nuclear Regulatory Commission Operations Center Event Report P(lge 2_

since that time. Eaton concluded that the contamination does not appear to be systemic, but rather random and intermittent a'nd that the contamination was most likely introduced either by operators and assemblers on the manufacturing lines, or by others who disassemble and inspect the product after shipment from their plant.

Susquehanna does not take the components apart during receipt for testing or visual inspection. Eaton concluded that there is no evidence that the issue is systemic and considers it a random event. Susquehanna has evaluated the condition and has concluded that the condition could create a substantial safety hazard."

The licensee notified the NRC Resident Inspector.

From: Jennings. Jason To: Hoc. HOO X Cc: Hood. Tanya; Micewski. Laura

Subject:

[External_Sender] Susquehanna Part 21 Notification Date: Friday, July 21, 2017 10:35:50 AM Attachments: Susquehanna Part 21.pdf Please see attached for Part 21 Initial Notification from Susquehanna. I will follow up with a phone call shortly. Thank you -

Jason Jennings Nuclear Regulatory Affairs Manager Susquehanna Nuclear, LLC (570)542-3155 The information contained in this messag_e is intended only for the personal and confidential use of the recipient(s) namea above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distributron, or copying of this message is strictly prohibited. Ilyou have re~e.ived this communication in error, please notify us immediately, and delete the ongmal message.

1152PAGE 1OF2 NRCFORM361 U.S. NUCLEAR REGULATORY COMMISSION (12-2000) OPERAllONS CENTER REACTOR PLANT EVENT NOTIFICATION WORKSHEET EN#

NRC OPERAllON TELEPHONE NUMBER: PRIMARY - 301-816-5100 or 800-532-3469*, BACKUPS *[1 Sl] 301-951-0550 or 800-449-3694*,

[2nd} 301415-0550 and [3rd] 301-415-0553 *Licensees who maintain their own ETS are provided these telephone numbers.

NOTIFICATION TIME FACILITY OR ORGANIZATION UNIT NAME OF CALLER CALLBACK#:

SUSQUEHANNA NUCLEAR LLC 2 Jason Jennings 570-542-3155 EVENT TIME & ZONE EVENT DATE POWERMODE BEFORE POWERMODE AFTER 1646 EDT 7/14/2017 U1: 100% I Mode 1/U2:100% I Mode 1 U1: 100% I Mode 1 / U2: 100% I Mode EVENT CLASSIFICATIONS 1-Hr. Non-Emergency 10 CFR 50.72(b)(1) (V){A) Safe S/D Capability AINA GENERAL EMERGENCY GEN/AAEC I TS Deviation ADEV (v)(B} RHR Capability AINB SITEAREAEMERGENCY SIT/AAEC 4-Hr. Non-Emergency 10 CFR50.72(b)(2) (v)(C) Control of Rad Release AINC ALERT ALE/AAEC (Q TS Required S/D ASHU {v)(D) Accident Mitigation AIND UNUSUAL EVENT UNU/AAEC {iv)(A) ECCS Discharge to RCS ACCS {XII) Offsite Medical AMED 50.72 NON-EMERGENCY (see next columns) (iv)(B) RPS Actuation (scram) ARPS (xiii) Loss Comm/AsmUResp ACOM PHYSICAL SECURITY (73.71) DDDD (xi) Offiste Notification APRE 60-Day Optional 10 CFR 50.73(a)(1)

MATERIAL/EXPOSURE B??? 8-Hr. Non-Emergency 10 CFR 50.72(b)(3) Invalid Specified System Actuation AINV FITNESS FOR DUTY HFIT (ii)(A) Degraded Condition ADEG other Unspecified Requirement (Identify)

OTHER UNSPECIFIED REQMT (see last column) (ii)(B) Unanalyzed Condition AUNA x 10 CFR 21.21(d)(3)(i) NONR INFORMATION ONLY NNF (lv)(A) Specified System Actuation AESF NONR DESCRIPTION Include: Systems affected, actuations & their initiating signals, causes, effect of event on plant, actions taken or planned, etc. (Continue on back)

Part 21 Notification - Eaton/Cutler Hammer A200 Series Starter Pursuant to 10 CFR 21, this is a non-emergency* notification by Susquehanna Nuclear, LLC concerning a defect in an Eaton/Cutler Hammer A200 series starter that failed while in service at Susquehanna Steam Electric Station. The failed starter was manufactured by Eaton Corporation in 2014 and purchased by Susquehanna from AZZ/NLI as part of an MCC bucket assembly. The starter failed with its contacts stuck in the energized state when it was de-energized. A failure analysis identified the contactor sticking to be due to the pole faces of the coil laminations and those of the armature laminations adhering to one another at normal operating temperatures. There was residue/material on the pole faces which closely matched Polydimethylsiloxane (PDMS) and silicone grease. One of the characteristics of PDMS is that at cooler temperatures it is more of a solid consistency, and at higher temperatures it becomes more viscous and tacky.

A previous Part 21 report submitted by Curiss-Wright QualTech NP (Event Notification 51611) in December 2015 provided notification of Eaton/Cutler Hammer A2DD series starters failures due to silicon based mold release that remained on the molded parts and would come between the moving (magnet) and fixed armatures. The Part 21 stated that when heated for extended period of time, the material would become sticky causing anywhere from a minor delay in opening to a frozen closed condition.* Eaton/Cutler Hammer determined that the silicone mold release was first introduced into the manufacturing facility in May 2008 and used periodically until October 2012. According to Eaton/Cutler Hammer, any starters manufactured after January 1, 2013 should be silicon mold release free.

Following the failure of the 2014 starter at Susquehanna, Eaton Corporation performed an investigation and reconfirmed that silicon mold release was banned from molding production in October 2012 and has not been used since that time. Eaton concluded that the contamination does not appear to be systemic, but rather random and intermittent and that the contamination was most likely introduced either by operators and assemblers on the manufacturing lines, or by others who disassemble and inspect the product after shipment from their plant. Susquehanna does not take the components apart during receipt for testing or visual inspection. Eaton concluded that there is no evidence that the issue is systemic and considers it a random event. Susquehanna has eval.uated the condition and has concluded that the condition could create a substantial safety hazard.

NOTIFICATIONS YES NO WILL BE ANYTHING UNUSUAL OR NOT UNDERSTOOD? D YES (Explain above) 181 NO NRC RESIDENT x STATE(s) x DID ALL SYSTEMS FUNCTION AS REQUIRED? 181 YES D NO (Explain above) x LOCAL OTHER GOV AGENCIES MEDIA/PRESS RELEASE x

x MODE OF OPERATION:

UNTIL CORRECTED NIA IESTIMATED RESTART DATE: N/A rDDITIONAL INFO ON BACK?

0 YES 181 NO NRC FORM 361 (12-2000) PRINTED ON RECYCLED PAPER

ADDITIONAL INFORMATION PAGE2 OF2 RADIOLOGICAL RELEASES: CHECK OR FILL IN APPLICABLE ITEMS (specific details/explanations should be covered in description)

LIQUID RELEASE I I GASEOUS RELEASE UNPLANNED RELEASE I PLANNED R'ELEASE ONGOING I I TERMINATED MONITORED I I UNMONITORED OFFSITE RELEASE I T.S. EXCEEDED RM ALARMS I I AREAS EVACUATED PERSONNEL EXPOSED OR CONTAMINATED OFFSITE PROTECTNEACTIONS RECOMMENDED *State release path in description Release Rate ICi/secl  % T.S. LIMIT HOO GUIDE Total Actlvltv ICil %T.S. LIMIT HOO GUIDE Noble Gas 0.1 Ci/sec 1000 Ci Iodine 10 uCl/sec 0.01 Ci Particulate 1 uCl/sec 1 mCi Liquid (excluding tritium &

dissolved noble gases) 10 uCi/min 0.1 Ci Liquid (tritium) 0.2 Ci/min 5Ci Total Activity PLANT STACK CONDENSER/AIR EJECTOR MAIN STEAM LINE SGBLOWDOWN OTHER RAD MONITOR READINGS:

ALARM SETPOINTS:

% T.S. LIMIT (if apD/ic;able)

RCS OR SG TUBE LEAKS: CHECK O_R FILL IN APPLICABLE ITEMS: (specific details/explanations should be covered in event description)

LOCATION OF THE LEAK (e.g., SG #, valve, pipe, etc.):

LEAK RATE UNITS: gpm/gpd T.S. LIMITS SUDDEN OR LONG TERM DEVELOPMENT LEAK START DATE: TIME: OOLANT ACTIVITY PRIMARY SECONDARY UNITS:

LIST OF SAFETY RELATED EQUIPMENT NOT OPERATIONAL:

EVENT DESCRIPTION (Continued from front) i Ii i

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