ML15155A577

Part 21 Notification Regarding Allen Bradley 700RTC Relay Configuration

ML15155A577
Person / Time
Site:	Brunswick
Issue date:	05/28/2015
From:	Turkal M Duke Energy Corp
To:	Office of Nuclear Reactor Regulation, NRC/RGN-II
References
EN 51030
Download: ML15155A577 (4)

Text

0512812015 U.S. Nuclear Regulatory Commission OperationsCenter Event Report page I Power Reactor Event# 51095 Site: BRUNSWICK Notification Date I Time: 05/28/2015 13:18 (EDT)

Unit: 1 2 Region: 2 State : NC Event Date I Time: 05/26/2015 15:36 (EDT)

Reactor Type: [1] GE-4,[2] GE-4 Last Modification: 05/28/2015 Containment Type: MARK I MARK I NRC Notified by: MARK TURKAL Notifications: KATHLEEN O'DONOHUE R2DO HQ Ops Officer: JOHN SHOEMAKER PART 21/50.55 REACTOREMAIL Emergency Class: NON EMERGENCY 10 CFR Section:

21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE Unit Scram Code RX Crit Init Power Initial RX Mode Curr Power Current RX Mode 1 N Yes 100 Power Operation 100 Power Operation 2 N Yes 100 Power Operation 100 Power Operation PART 21 NOTIFICATION - ALLEN BRADLEY 700RTC RELAY CONFIGURATION "This is a non-emergency notification, required by 10 CFR 21.21 (d)(3)(i).

"Brunswick has determined that Allen Bradley relays, base model 700RTC, contain an unevaluated Complex Programmable Logic Device (CPLD). This was an unpublished design change that was implemented to replace an obsolete integrated circuit chip. The undocumented design change did not result in a part number change from Allen Bradley. There was no change to the external appearance of the relay that would indicate that a design change had been made to the relay configuration. Therefore, qualification/dedication of the modified relays have not included additional testing for the new CPLD component. Testing, performed by Duke Energy, has demonstrated that this CPLD can be affected by electrical noise from operation of nearby relays which can reset the timing of the relay. This condition was discovered as a result of a post-maintenance test of an emergency diesel generator. Additional details associated with the discovery of this condition are contained in Brunswick Licensee Event Report 1-2015-002, dated May 20, 2015.

"Brunswick purchased, as commercial grade, 25 of the modified Allen Bradley 700RTC relays beginning in October, 2008. Duke Energy dedicated these relays for use in safety related applications at Brunswick. The dedicated relays were not provided to any third party customers.

"The NRC Senior Resident Inspector has been notified."

Brunswick has taken applicable compensatory measures to insure no equipment is inoperable because of these relays.

This problem was previously reported in EN#51030.

9£e.

05/28/2015 U.S. Nuclear Regulatory Commission OperationsCenter Event Report Page I PAGE 01/02 9104573014 PROGRESS ENERGY BNP 05/28/2015 11:57 Fax" To: NRC Operations Center From: Mark Turkal - Brunswick Fax 301 816-5151 Pages: 2 (Cover p!us 1)

Phone: 301 816-5100 Dat? 5/28/15 Re. Part 21 - Allen Bradley Relays CC: N/A

I -

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PROGRESS ENERGY BNP PAGE 02/02 05/28/2015 11:57 9104573014 NRC FORM 361 U.S. NUCLEAR REGULATORY COMMISSION (12-200o) OPERATIONS CENTER REACTOR PLANT I EVENT NOTIFICATION WORKSHEET EN #

NRC f OPERATION 8d01415-0550TELEPHONE NUMBER: PRIMARY ., 301-816-5100 or 800-532.3469, and f3rdl 301-415-0553 *ilesnseeswhoBACKUPS llst]

maintain -their own 301-951-0550 or 800-449-3694" FT am nrnulrded these talenhone numbat.

NOTIFICATION TIME FACILITY OR ORGANIZATION UNIT NAME OF CALLER CALL BACK #

Brunswick 1& 2 Mark Turkal (910) 457-3066 EVENT TIME &ZONE EVENT DATE POWERIMODE BEFORE POWER/MOOE AFT* R 1536 EDT' 05/2612015 Unit 1; &2 - 100% 1Mode'l Unit 1 &2 - 100% 1Mode 1 EVENT CLASSIFICATIONS 1,-Hr. Non-Emergancy 10 CFR 60(72(b)(1) 5 (vXA) 5/ Oanllity Wte AINA oj GENERAL EMERGENCY GENIAMEG TS Deiation ADEY 'E5 0)(9) RHR capebflitY AINS O SITU AREA EMERGENCY SIT/AAEC 4-Hr. Non-Emergency 10 CFR 80,72(b 2) 0 CMC) Con*,i 0?Red Release AING O ,LERT AEAEC -- ,.L(I) TS RequIred S/D ASHU [E (vy)(D) AccidentMitilation AINDg E] UNUSUAL EVENT UNU/AAEC [J (lxA) ECCS *ischarge to RCS ACCES (xli) OffslehMedlcmal AMED El 50.72 NON-EMERGENCY -(see nect olumn) " (lvXB) RPf ACtion (warn) ARPS E] (xAI Loss Commn/Aarnt/esp ACOM

[3 PHYSICAL SECURITY 73.71) ODDD 5* x) I Oftt Nodlmlceion APRE 60-Day O tional 10 CFR 5(.73(X 1)

[o MATERIAIX( SURE B??? 8-Hr.iNon-Emrgeny 10 CFR 50.72(b)(3) Invlid Specified Sy7lemActlon AINV o FITNESS FOR DUTY" HFIT 5] (i)4A) 0taded Condition ADEG Other Unspecified Requlemnent (Identff*)

o OTHER UNSPECIFIO REOMT. (seelasteolurn) f (i,(B) Unaalyzed Co4nditlon AUNA 0 10 CFR 21.21 - Defects & Noncompliance NONR O0 iNFORMIATiON ONLY NiNIP Wv cuainAS PAi NN DESCRIPfTON Include: Systems effec*d, actuaons afd their initmtng ignals, causes, effect of event on plmt, acions %ken or plann-e, etc. (Cofniru on bntcl ALLEN BRADLEY 700RTC RELAY CONFIGURATION This is a non-emergency notification, required by 10 CFR 21.21(d)(3)(i).

Brunswick has determined that Allen Bradley relays, base model 700RTC, contain an unevaluated Complex Programmable Logic Device (CPLD). This was an unpublished design change that was implemented to replace an obsolete integrated circuit chip. The undocumented design change did not result in a part number change from Alien Bradley. There was no change to the external appearance of the relay that would indicate that a design change had been made to the relay configuration. Therefore, qualification/dedication of the modified relays have not included additional testing for the new CPLD component. Testing, performed by Duke Energy, has demonstrated that this CPLD can be affected by electrical noise from operation of nearby relays which can reset the timing of the relay. Tibs condition was discovered as a result of a post-maintenance test of an emergency diesel generator. Additional details'associated with the discovery of this condition are contained in Brunswick Licensee Event Report 1-2015-002, dated May 20, 2015.

Brunswick purchased, as commercial grade, 25 of the modified Allen Bradley 700RTC relays beginning in October, 2008. Duke Energy dedicated these relays for use In safety related applications at Brunswick. The dedicated relays were not provided to any third party customers.

The NRC Senior Resident Inspector has been notified.

/!:1 1NO"!1(ATIONS 'YES NO0MILL I BeANYTHING E UNUSUAL OR 'flYS (!,Iait above) [ O IO NRC RESIDENT " 07.1f4 L. NOT UNDERSTOOD?

STATE(s) LI £ 0JDID ALL SY'STEMSWES]N (xpanaoe NO (Expiaan above)

LOCAL .- - FUNCTION AS REQUIRED? Z6Y OTHER GOV AGENCIES, _C3 .r Q to r OPAR.T:STIMAT"D OpaTION. Rp ADDI7I0ONA- INFO CN BACK MIEDIAPRWES RELEASIEI 0 0 _0_

EI UNTILCORREC'TUO I ,.(M.MU$" [] NIA RES1ATE N YE NOs NRCF0RMW1 (12-2000)

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