ML15155A577
| 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 Operations Center Event Reportpage IPower Reactor Event# 51095Site: 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 INRC Notified by: MARK TURKAL Notifications:
KATHLEEN O'DONOHUE R2DOHQ 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 Mode1 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 ComplexProgrammable Logic Device (CPLD). This was an unpublished design change that was implemented to replace anobsolete integrated circuit chip. The undocumented design change did not result in a part number change fromAllen Bradley.
There was no change to the external appearance of the relay that would indicate that a designchange had been made to the relay configuration.
Therefore, qualification/dedication of the modified relays havenot included additional testing for the new CPLD component.
- Testing, performed by Duke Energy, hasdemonstrated that this CPLD can be affected by electrical noise from operation of nearby relays which can resetthe 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 inOctober, 2008. Duke Energy dedicated these relays for use in safety related applications at Brunswick.
Thededicated 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 theserelays.This problem was previously reported in EN#51030.9£e.
05/28/2015 U.S. Nuclear Regulatory Commission Operations Center Event Report Page I 05/28/2015 11:579104573014 PROGRESS ENERGY BNP PAGE 01/02Fax"To: NRC Operations Center From: Mark Turkal -Brunswick Fax 301 816-5151 Pages: 2 (Cover p!us 1)Phone: 301 816-5100 Dat? 5/28/15Re. Part 21 -Allen Bradley Relays CC: N/A IG I -.-PAGE 02/0205/28/2015 11:579104573014 PROGRESS ENERGY BNPNRC FORM 361 U.S. NUCLEAR REGULATORY COMMISSION (12-200o)
OPERATIONS CENTERREACTOR PLANTI EVENT NOTIFICATION WORKSHEET EN #NRC OPERATION TELEPHONE NUMBER: PRIMARY ., 301-816-5100 or 800-532.3469, BACKUPS -llst] 301-951-0550 or 800-449-3694" f 8d 01415-0550 and f3rdl 301-415-0553
- ilesnsees who maintain their own FT am nrnulrded these talenhone numbat.NOTIFICATION TIME FACILITY OR ORGANIZATION UNIT NAME OF CALLER CALL BACK #Brunswick 1& 2 Mark Turkal (910) 457-3066EVENT TIME & ZONE EVENT DATE POWERIMODE BEFORE POWER/MOOE R1536 EDT' 05/2612015 Unit 1; & 2 -100% 1 Mode'l Unit 1 & 2 -100% 1 Mode 1EVENT CLASSIFICATIONS 1,-Hr. Non-Emergancy 10 CFR 60(72(b)(1) 5 (vXA) Wte 5/ Oanllity AINAoj GENERAL EMERGENCY GENIAMEG TS Deiation ADEY 'E5 0)(9) RHR capebflitY AINSO SITU AREA EMERGENCY SIT/AAEC 4-Hr. Non-Emergency 10 CFR 80,72(b 2) 0 CMC) 0? Red Release AINGO ,LERT AEAEC --,.L (I) TS RequIred S/D ASHU [E (vy)(D) AccidentMitilation AINDgE] UNUSUAL EVENT UNU/A AEC [J (lxA) ECCS to RCS ACCE S (xli) OffslehMedlcmal AMEDEl 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 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 AINVo FITNESS FOR DUTY" HFIT 5] (i)4A) 0taded Condition ADEG Other Unspecified Requlemnent o OTHER UNSPECIFIO REOMT. (seelasteolurn) f (i,(B) Unaalyzed Co4nditlon AUNA 0 10 CFR 21.21 -Defects & Noncompliance NONRO0 iNFORMIATiON ONLY NiNIP Wv PA cuainAS i NNDESCRIPfTON Include:
Systems effec*d, actuaons afd their initmtng ignals, causes, effect of event on plmt, acions %ken or plann-e, etc. (Cofniru on bntclALLEN 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 circuitchip. The undocumented design change did not result in a part number change from Alien Bradley.
There was no change to theexternal 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 nearbyrelays which can reset the timing of the relay. Tibs condition was discovered as a result of a post-maintenance test of anemergency 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. DukeEnergy dedicated these relays for use In safety related applications at Brunswick.
The dedicated relays were not provided toany third party customers.
The NRC Senior Resident Inspector has been notified.
/!:11NO"!1(ATIONS
'YES NO I 0MILL E BeANYTHING UNUSUAL OR 'flYS (!,Iait above) [ O IONRC RESIDENT
" 07.1f4 L. NOT UNDERSTOOD?
STATE(s)
LI £ 0JDID ALL SY'STEMSWES]N (xpanaoeLOCAL .- -FUNCTION AS REQUIRED?
Z 6Y NO (Expiaan above)OTHER GOV AGENCIES,
_C3 .r Q o r t OpaTION.
Rp OPAR.T:STIMAT"D ADDI7I0ONA-INFO CN BACKMIEDIAPRWES RELEASIEI 0 0 _0_ UNTILCORREC'TUO NIA RES1ATE NEI I ,.(M.MU$"
[] YE NOsNRCF0RMW1 (12-2000)
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