ML16238A186
| ML16238A186 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Browns Ferry, Nine Mile Point, Perry, Saint Lucie, North Anna, River Bend, Ginna, South Texas, Fort Calhoun, University of Lowell, 05000217 |
| Issue date: | 08/15/2016 |
| From: | Bolt T AZZ / NLI Nuclear Logistics |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 51030 | |
| Download: ML16238A186 (11) | |
Text
L I' Date: August 15, 2016 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Part 21 Report No: P21-04302015, Rev. 3
Subject:
Update - Report of potential 10CFR Part 21, Allen Bradley Timing Relay Model 700RTC-NRC Event Number 51030, Accession Number ML15134A016 Revision 2, corrections:
- 1. Page 5 (vii), 2nd paragraph: changed EPRI TR-102323 Rev. 3 to Rev. 4.
- 2. Page 5 (vii), 3rd paragraph: changed 'timing' contacts to 'instantaneous' contacts.
Revision 3 correction: The date the change occurred is October 2008.
Pursuant to 10CFR 21.21 (d) (3) (ii), AZZINLI is providing written notification of the identification of a potential failure to comply.
On the basis of our evaluation, it is determined that AZZINLI does not have sufficient information to determine if the subject condition would, or has, created a Substantial Safety Hazard or would have created a Technical Specification Safety Limit violation as it relates to the subject plant applications.
The following information is required per 10CFR 21.21 (d) (4).
(i) Name and address of the individual or individuals informing the Commission.
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
The specific part which fails to comply or contains a defect:
As of October 2008, Allen Bradley relays base model 700RTC, contain a CPLD (Complex Programmable Logic Device). This was an unpublished design change that was implemented to replace an obsolete integrated circuit chip.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 appearance of the relay that would identify any design changes were made to the relay configuration. ..,-- C/ °/
~ fZ Page 1 of 6 {If/(
NUCLEAR LOGISTICS INC. www.az:z:.com 74 I 0 P e bble Driv e
- F o rt W o rth . T ex<Js 76 I 18 8 00 . 44 8 . 4 12 4 Ph one 8 17 . 590 . 04 8 4 Fa x
The timing relay model 700RTC has been dedicated/qualified for multiple applications for various plants.
(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect.
NLI procured the commercial grade relays, dedicated, qualified and supplied the subject relays as Safety Related.
(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
In October 2008, Allen Bradley made a design change without changing the part number of the commercial relay or providing any documented evidence of a design change. The manufacturer specification data sheets maintain the classification that the relays are "solid state", which would imply that there are no digital devices installed in the relay. However, after inspection of the internals of the timing relay (Figure 2), it has been identified that the unit does contain a CPLD wh ich meets the definition of a digital device under the guidance of NEI 01-01 . See Figures 1 and 2 below:
Figure 1- Original qualified design (prior to October 2008).
Relays supplied prior to October 2008 are not affected by this issue.
Part 21 Report No: P21-04302015, Rev. 3 Page 2 of 6
Figure 2 - New design circuit board and CPLD that replaced the original component.
(v) The date on which the information of such defect or failure to comply was obtained.
On April 27, 2015 , enough information was gathered from the evaluations being performed to determine the reportability of the failure to comply that is the root cause for the event.
Part 21 Report No: P21-04302015 , Rev. 3 Page 3 of 6
(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations in this part.
Relays that have been procured and dedicated from October 2008 to present are identified below.
Plant Name Purchase order Serial Number Browns Ferry 72923-1 29760-001-00003 Ginna Station 6617899 51475-001-00001 and -00002, 52656Kl-01-0001 Grand Gulf 10304816 34182-001-00001 Grand Gulf 10400205 56319-001-00001 39228-001-00001 thru -00017, 39228-001-00158 thru Invensys 4540216542 39228-001-00166, 39228-001-00170 thru 39228-001-00177 39407-001-00001 thru -00008, 39407-002-00001 thru -
KHNP Y12-0292-010 00005 Lungmen 8749411E007CO 38486-001-00001 and -00002, 38486-002-00001 Millstone 45735761 31998Kl-01-0001 Millstone 45735761 31391-001-00001 Nine Mile Point 530734 63 245-001-00001 thru -00018 North Anna 70239037 55133-001-00001 & -00002 39602-001-00001 and -00002, 39602-002-00001 thru -
70239037 North Anna 00003 40033-001-00001 and 40033-001-00002, 40033-002-00001 North Anna 70239037 thru -00003 33846-001-00001 thru -00009, 33846-001-00011 thru OPPD Ft Calhoun 155213 33846-001-00015, 33846-002-00002 & -00003 OPPD Ft Calhoun 163495 35941-001-00001 thru -00004 OPPD Ft Calhoun 164936 35891Kl-Ol-0001 thru -0005 OPPD Ft Calhoun 164936 36888-001-00001, -00003 thru -00005 OPPD Ft Calhoun 164936 36888K2-01-0001 OPPD Ft Calhoun 177878 39194-001-00001 thru -00006 OPPD Ft Calhoun 40743-001-00001 thru -00003, 40743-002-00001 182681 OPPD Ft Calhoun 187625 51477-001-00001 thru -00004 Perry Station 45354401 33357-001-00001 thru -00003 River Bend Station 10349942 38585-001-00001 thru -000.04 River Bend Station 10362573 40077-001-00001 River Bend Station 10378904 51627-001-00001 South Texas Project 134783 33750-001-00001 & -00002 Part 21 Report No: P21-04302015, Rev. 3 Page 4of6
South Texas Project 147962 37204-001-0000 I thru -00006 South Texas Project 154172 51592-001-00001 thru -00004 South Texas Project 171193 57894-001-0000 I thru -00006 Bechtel PO: 25486-974-St Lucie 38549-001-00002 thru -00005 FPA-EMR0-00001 (vii) The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.
The relays that.are currently in stock at NLI have been placed on hold until after the units have been determined to be qualified for the specific application. NLI has completed the EMC qualification I testing per the requirements ofEPRI TR-102323 Rev. 4 for the following tests, as applicable: CEIOI, CE102, RE101, RE102, RS101, RS103, CSIOl, CSl 14, CSl 15 and CSI 16.
The results were satisfactory with exception of the following condition: During Conducted Susceptibility CS 114 onto the power lines, with the timing circuit in operation, the instantaneous contacts exhibited chatter in the range of 2.6 MHz to 20.3 MHz. The unit requires a feITite to be installed onto the input power lines of the relay with 3 turns through the feITite core. In this modified configuration, the relay was not susceptible to Conducted Susceptibility and successfully passed the required test per CSI 14.
In addition to the EMC testing that was performed, the Verification and Validation I Dedication activities for the digital device was also completed. The results of the dedication activity are contained in NLI Verification and Validation/Dedication report VVR-700RTC-Ol, Rev. I. The results of the V & V/dedication activity are satisfactory. The firmware version verified is the only version that has been released since the change was implemented.
Part 21 Report No: P21-04302015, Rev. 3 Page 5of6
(vnnn) Amty aidlvke 1reila1l:eidl fo Olle idlded 01r fanilume to comJPilY abmn11: 11:Hne faiclliln11:y, adnvity, 01r lbasnc COIDJP01l11.ell1l.11: 11:llna11: llnas Jmeellll, US Jmefillllg, l{J)Jr wm be givemt 11:0 JPllnirCllnaseJrS l{J)IJ" IlJicellJlsees.
The functions of the relays supplied by NLI were tested for the following critical characteristics:
Pick-up at rated voltage Drop-out when the voltage is removed Pick-up at degraded voltage Over-Voltage operation Insulation resistance Off delay settings are adjustable from 2-120 seconds Pick-up voltage Drop-out voltage Dimensions and Configuration The relays are dedicated for generic application usage in timing applications. The specific plant application(s) is unknown by NLI. The EMC qualification of the relay is dependent on the installed configuration and location in the plant. The plant should evaluate whether the installed relays are subjected to the specific EMl/RFI condition Conducted Susceptibility CS 114 between the frequencies of2.6 MHz to 20.3 MHz identified above.
Please contact me with any questions or comments.
JTracf;f(~
Direqtor of Quality Assurance Part 21 Report No: P21-04302015, Rev. 3 Page 6of6
NUCLEAR Technical Bulletin TB=16=001, Revision 0 AUen=Biradiey 700RTC Ferrite Installation TB-16-001, Rev. 0 August2016
Technical Bulletin TB-16-001, Rev. 0 Allen-Bradley 700RTC Relay Page ii Technical Bulletin TB-16-001, Revision 0 Allen=Biradley 700RTC Ferrite Installation This technical bulletin has been prepared in accordance with NLI Quality Assurance Program Verified by:_C __ ___.=:....___ _ _ _ _ _ _ _ date:_'i /f~'2.l. /!_
G, _ _ __
c7)~ /J Approved by: ~~ date: g-/;S'"/;;o1 (,.
r' "7N'1PHJ 017v-r
Technical Bulletin TB-16-001, Rev. 0 Allen-Bradley 700RTC Relay Page iii REVISION HISTORY Revision Description Date 0 Original Issue 8/J$}2016
Technical Bulletin TB-16-001, Rev. 0 Allen-Bradley 700RTC Relay Page 1 1.0 Issue Description The purpose of this bulletin is to address installation of ferrites on the Allen-Bradley 700RTC relays with date codes October 2008 and after.
During all phases of the EMI/RFI testing, the delay contacts behaved normally. However, the EMI/RFI testing revealed that if a conducted disturbance occurred during the time delay sequence that the instantaneous contact would change state. Failing contact chatter (>2ms) was present on the NC Instantaneous Contact during CS 114 testing applied to the input power lines.
At 2.6MHz - Audible Clicking apparent from the Relay.
At 3.4MHz - First Change in State of the NC Instantaneous Contact At 20.3MHz - Last Change in State of the NC Instantaneous Contact - Normal function resumed.
By installing a ferrite with 3 turns through the ferrite, the condition was prevented.
2.0 Recommendations It is strongly recommended that the plant install the recommended ferrites on all Allen-Bradley 700RTC relays with date codes October 2008 and after.
3.0 Installation Instructions Verify that there is at least 18 inches of service loop on the 2 power wires to the relay.
Verify that you have a Fair Rite Part Number 0475176451.
The installation should be done with both power wires through one ferrite bead.
Open the ferrite clamp. Start as close as possible to the relay and wrap the input power wires (2) through the middle of the ferrite and around the back of the ferrite. After three complete loops through the ferrite, close the ferrite being careful not to catch the wires in the pinch points of the closed ferrite.
Verify that both of the latches on the ferrite are securely closed.
- Technical Bulletin TB-16-001, Rev. 0 Allen-Bradley 700RTC Relay Page2