ML20073K185

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Submits Info in Response to Reporting Requirements Contained in NRC Bulletin 90-01, Loss of Fill-Oil in Transmitters Mfg by Rosemount
ML20073K185
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 07/16/1990
From: Parker T
NORTHERN STATES POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-90-001, IEB-90-1, NUDOCS 9105100035
Download: ML20073K185 (9)
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Northem States Power Company 414 Nicchet Mall Minneapohs, Minnesota 55401 1927 Telephone (612) lLW5500 July 16,1990 NRC Bulletin 90 01 Director of Nuclear Reactor Regulation U S Nuclear Re5ulatory Commission Attn:

Document Contr31 Desk Washington, DC 20555 PRAIRIE ISLAND NUC1. EAR CENERATING PIANT Docket Nos. 50 282 License Nos, DPR 42 50 306 DPR 60 Response to NRC Bulletin No. 90 01 Loss of F111 011 In Transmitters Manufactured by Rosemount The following information is provided in response to the reporting requirements contained in NRC Bulletin 90 01, " Loss of F111 011 in Transmitters Manufactured by Rosemount "

Reporting Requirement No.1 states:

Provide, within 120 days after receipt of this bulletin, a response that:

a)

Confirms that Items 1, 2, 3, 4, and 5 of Requested Actions for Operating Reactors have been completed, b)

Identifies the indicated manufacturer; the model number; the system the transmitter was utilized in; the approximate amount of time at pressure; the corrective actions taken; and the disposition (e.g.,

returned to vendor for analysis) of Rosemount Model 1153 Series B, Model 1153 Series D, and Model 1154 transmitters that are believed to have exhibited symptoms indicative of loss of fill oil or have been confirmed-to have experienced a loss of fill oil.

This should include Model 1153 Model Series B. Model 1153 Series D and Model 1154 transmitters manufactured af ter July 11, 1989, c)

Identifies the system in which the model 1153 Series B, 1153 Series D and Model 1154 transmitters from the manufacturing lots that have been identified by Rosemount as havin5 a high failure fraction due to loss of fill oil are utilized and provides a schedule for replacement of these transmitters which are in use in the reactor protection or engineered safety fectures actuation systems.

9105100035 900716

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L ir o NRR Nodhom Ste'es Power Company Page-2 of 3-1 Response-1 a)

Items 1_2, 3, 4, and 5 of Requested. Actions for Operating Reactors have been c?mpleted.

Details regarding the completion of the Requested Actions for Operating Reactors'are contained in Attachment 2.

b).

One transmitter has been confirmed to have experienced a loss of fill. oil, and a second has_shown.some symptoms indicative of loss of fill. oil. Neither transmitter vas from the suspect lots reported by Rosemount.

The requested information for these failures follows:

Failure 1 Failure 2 Manufacturer Rosemount Rosemount Model Number 1153GD9 1154HP5 Serial Number 410286 416852 System-RCS FW In Service-Date

_03/19/86 05/05/87 Failure Date 09/11/86 08/28/88 Process Pressure 2235 psig 750 psig

. Time at Pressure

-13410 psi. month 10500 psi month Corrective Action Replaced Replaced Disposition.

Refurbished in Returned to 1990 Rosemount for Confirmation /

Repair. status presently undetermined by Rosemount c).

There are no transmitters currently in use or in spare parts from manufacturing _ lots that-have been identified-by Rosemount as having.

a high failura fraction due to loss of fill. oil.

Reportine Recuiremenr-No. 2 stated!

Model 1153-Series B, 1153 Series D and Model 1154 transmitters that,

subsequent'to_providing the response required by Item 1 above,= exhibit symptoms ~of loss of_ fill.oiloor are. confirmed to have experienced a loss of fill-oil should be reviewed _for reportability under-existing NRC Regulations.. If determined not to be reportable, addressees are requested to' document and maintain,;in accordance with existing plant

-procedures, information consistent with that requested in item ib) above for each transmitter _ identified; 4

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Dir of NRR Northem States Power Company July 16,1990 Page 3 of 3 4

i Peroonse Model 1153 Series B, Model 1153 Series D, and Model 1154 transmitters that, i

subsequent to providing this response, do not meet the operational acceptance criteria specified, vill be reviewed for reportability under existing NRC

. regulations.

If determined to be not reportable, the failures vill be documented, with information consistent to that requested in Item 1 b) above, on the applicable calibration cards.

Please contact us if you have any questions related to the information we have provided.

Thomas M Parker Manager Nuclear Support Services c:. Regional Administrator - Region III, NRC

-Senior Resident Inspector, NRC NRR Proj ect Manager, NRC C Charr.off Attachments

1. Affidavit'
2. Prairie Island Response to Requested Actions for Operating Reactors v

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-i ATTACl!SENT 1 UNITED STATES NUCIJAR RECUIATORY COMMISSION

' NORTHERN STATES POWER COMPANY PRAIRIE ISLAND NUCIIIJ CENERATING' PIANT DOCKET'NO, 50 282 50 306 LOSS OF Fill 0IL kN TPANSMITTERS MAWTACTURED BY ROSEMOUNT l

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-Nt thern States Power Comp' ny, a Minnesota corporation, with this letter is a

submi'tting information requested by NRC Bulletin 90 01 Tnis letter contains no restricted cr:ccher defense information.-

NORTHERNSTATESPfW OMPANT

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J Byc_ _<fkM @ t!/E M d _

_ Thomas M Parker Manager, Nuclear Support Servicos

(('70 before me a notary public in' and:for said

-On this ay o

' County, personally [y'ppepe'd Thomas M Parker, Manager, Nuclear Support Services,.and being first duly-sworn acknowledged that he is authorized to -

execute this-document on-behalf of Northern States Power Company, that.he knows the content's thereof, and-that-to the best:of his knowledge, information,-and belief the-statements made in-it are true and that it is not interposed for del y.

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MARQA K LaCORE NOTARY PUBLIC-MINNESOTA

. HENNEPIN COUNTY 4 My Commase Empires Sept 24.1993 unumwwn::::::::.::::.v:;;.::n

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. it.'ty 16, 'WJ Page 1 of $

.CHMENT 2 En.unnse _to _Ruu,ste d htinnsAArsrad:Inr kenetork Recuested Aeti pl L 1 t

Identify Model 1153 Series B,115.1 Serias D, and Hodal 1154 pressure or differential pressure transmitters..cxcluding Mods 1 1153 Serie.s B,1153 Series D, and Model 1134 transmitvera manvfetured by Roosmow.W rubsequent to July 11, 1989, thei Me.:uttently utilized in either safety related systas or systens insttiled it. accordarec with 10 CFR 50.62 (the AWS rulv).

Esponse The following,Rosemount 1153 Series B, 1153 Series D or Model 11 % pressura er differential pressure transmitters are installed in Prairie Island safety relar.ted systems or ATVS related systems:

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DESCRIPTION SYSTEM 1FT-464 11 STEAM CENERATOR STEAM FIDW RP 1FT 465 11 STEAM CENERATOR STEAM FIDW RP 11T 466 11 STEAM CENERATOR FEEDWATER FIDW

  • W 1FT 467 11 STEAM CENERATOR TEEDWATER FLOW
  • W 177-474 12 STEAM CENERATOR STEAM FIDW RP 1FT 475 12 STEAM CENERATOR STEAM FLOW RP 1FT 476 12 STEAM CENERATOR FEEDWATER FLOW

. RP 2FT 466 21 STEAM CENERATOR FEEDWATER FLOW

  • W 2FT 474 22 STEAM CENERATOR STEAM FIDW RP 2FT 475 22 STEAM CENERATOR STEAM FLOW RP 2FT-476 22 STEAM CENERATOR FEEDWATER FIDW
  • - AWS-Related EM - Event Monitoring (post necident)

W - Feedwater Control RP - Reactor Protection

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.t Attachamt 2 July %, 1HC ince 2 of 5 I

&ttw.uti Ar;r.isn No.,2 Determine whether any transmitters identified in Item 1 are from the nanufacturing lots that have been identified by Rosemount as having a hi h fr.11ure fraction dua to loss of fill oil. Addresseen are 6

requested not to utilize transmitters from these suspect lots in the reactor protection or engineered safety features sctuation systems; therefore, addressees are requested to develop and implement a

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program to replace, at the earliest appropriate opportunity, transmitters from thoso suspect lots in use in the reactor protection or engineered safety fsatures actuation systems.

Ef>J m Lt Serial numbers for all instelled and spare transmitters have been compared to Rosemount's list of suspect transmitters. No transmitters were identified as i

belonging to the subject lots.

This van confirmed in a letter from Rosemount dated February 10, 1989.

Spare transmitters manufactured prior to July 11, 1989 have been returned to Rosemount for remanufacture / replacement of sensing cell, 0 rings and housing pursuant to post July 11, 1989 manufacturing specifications.

Ernuested Action No. 3 Review plent records (for example, the thrae most recent calibration records) associated with the transmitters identiflad in Item 1 above to determine whether any of these transmitters may have already exhibited symptoms indicative of loss of fill oil. Appropriate operability acceptance-criteria should te developed and applied to transmitters identified as having exhibited symptoms indicative of loss of lill oil from this plant record review.

Transmitters identified as having exhibited symptoms indicative of loss of fill oil that do not conform to the operability acceptance criteria should be addressed in accordance with th? applicable technical specification.

Transmitters identified as having exhibited symptoms indicative of loss of fill-oil that do not conform to the operability acceptmnce criteria and are not addressed in the technical specifications should be replaced at the earliest appropriate opportunity.

Resoonse Operability acceptance criteria have been established for each transmitter.

The-acceptance criteria vere calculated in accordance with Rosemount Technical Bulletin 4 Section 3.2, " Guidelines for Trending Calibration Data" and Table A1. Calibration data for each transmitter since installation were compared to the operability acceptance criteria. No transmitters currently installed have exhibited symptoms indicative of loss of fill oil or exceeded the operability acceptance criteria.

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Attocempit 2 July 16, 1 M0' Pope 3 of 5 1

Reouested Action No.4 Develop and implement an enhanced surveillance program to monitor transmitters identified in Item 1 for symptoms of loss of fill oil.

This enhanced surveillance program should consider the following or equally effective actions:

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a)

Ensuring appropriate licensee personnel are aware of the symptoms that a transmitter, both during operation and during calibration activities, may exhibit if it is experiencing a loss of fill oil and the need for prompt identification of transmitters that may exhibit these symptoms; b)

Enhanced transmitter monitorin6 to identify sustained l

transmitter drift; c)

Review of transmitter performance folicwing planned or unplanned plant transients or tests to identify sluggish j

transmitter response; d).

. Enhanced awareness of sluggish transmitter response to either increasing or' decreasing test pressures during calibration activities; e)

Development and implementation of a program to detect changes in process noise; and f)

Developmect and application to transmitters identified as having exhibited symptoms indicative of loss of fill oil of an appropriate operability acceptance criteria. Transmitters identified as having exhibited symptoms indicative of loss of fill oil that do not conform to the operability acceptance criteria should be addressed in accordance with the applicable

technical specification. Transmitters identified as having

-exhibited symptoms indicative of lossaof fill oil that do not conform to t..e: operability acceptance criteria and are.not addressed.in the technical specifications should be replaced at l

the earliest appropriate opportunity.

Resoonse a)

Operations has been. informed via operations notes, formal class room training and a note added to the shift channel check surveillance procedure.of the symptoms indicative of a loss of fill oil.

Instrumentation and Control Personnel have been informed by l

distribution of Rosemount Technical Bulletins, pre calibration L

briefings with supervisors and formal class room training. A Section l

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Attsebent 2 July 16, i W O Pope 4 of 5 Work Instruction has been developed identifying responsibilities of Instrumentation and Control personnel during calibration of Rosemount transmitte rs,

b)

A Section Work Instruction has been developed that requires the System Engineer to monitor calibration data for sustained drift and take required actions if operability acceptance criteria are approached or exceeded, c)

The post trip review form (entitled Trip Report) is being revised to include acquiring plant computer time history data during the transiunt by the I&C Engineer or Computer Engineer and will be included in the Systes Engineer's Quarterly Monitoring file for comparison of response.

(See response to e below) d)

An Instrument Work Note has been developed instructing the technician to watch for sluggishness and calibration shift during calibration and specifying guidelines for transmitter response per Rosemount Technical Bulletin 4 Appendix B.

e)

The operations shift check procedure of control room instruments has been revised to monitor for changes or variations in process noise between r6dundant channels.

For safety related transmitters that have not met time in. service requirements per Rosemount Technical Bulletin 4, a Section Work Instruction has been generated requiring the system engineer to monitor process noise via the plant process computer system at a minimum of once per quarter. Monitoring transmitters after time-in. service requirements are met will be at tha discretion of the system engineer. Any transmitter that has shown symptoms indicative of loss of fill-oil vill be monitored regardless of time in service.

NSP is'considering4 t additional data acquisition system that would enhance detection of changes in process noise response, f)

No presently installed transmitters have indicated any symptoms of loss of fill-oil. Operability acceptance criteria have been developed for installed transmitters based on Rosemount Technical Bulletin 4 Table Al criteria.

If a transmitter exceeds these criteria or indicates that it will exceed these criteria prior to its next scheduled calibration and exhibits sluggishness or degradation in process noise response, the appropriate Technical Specification vill be applied, or if no Technical Specification applies that transmitter vill be replaced at the earliest appropriate opportunity.

The operability acceptance criteria are specified in a Section Work Instruction.

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  • Attachaent 2 July 16, i WC Page 5 od 5 Recuested Action No. 5 Document and maintain in accordance with existing plant procedures a basis for continued plant operation coverin5 the time period from th-present until such time that the Model 1153 Series B, 1153 Series D, and Model 1154 transmitters from the manufacturing lots that have been identified by Rosemount as having a hiSh failure fraction due to loss of fill oil in use in the reactor protection or engineered safety features actuation systems can be replaced.

In addition, while performing the actions requested above, addressees may identify transmitters exhibiting symptoms indicative of loss of fill oil that do not conforu to the established operability acceptance criteria and are not addressed in the technical specifications. As these transmitters are identified, this basis for continued plant operation should be updated to address these transmitters covering the tima period from the time these transmitters are identified until such time that these tremenisters can be replac6d.

When developing and updating this basis for continued plant operation, addressees may with to consider transmitter diversity and redundancy, diverse trip functions (a separate trip function that may also provide a corresponding trip si nal), special system and/or component tests, or 5

(if necesscry) immediate replacement of certain suspect transmitters.

Reseense No presently installed Rosemount 1153 or 1154 pressure or differential pressure transmitters have shown symptoms indicative of loss of fill cil.

If any Rosemount 1153 or 1154 transmitters are identified as showing symptoms indicative of loss of fill oil and exceed operability acceptance criteria, the appropriate Technical Specification will be applied or if no Technical Specification applies that transmitter will be replaced at the earliest appropriate opportunity.

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