ML18059B000

Informs That GL 89-10 MOV Insp Will Be Performed at Plant on 940912-16 & 26-30

ML18059B000
Person / Time
Site:	Palisades
Issue date:	05/23/1994
From:	Wright G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Thomas J. Palmisano CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
References
GL-89-10, NUDOCS 9405260098
Download: ML18059B000 (5)

Text

Y.iay 23 I 1994 Docket No.

50~255 Consumers Power Company ATTN:

Mr. T. Palmisano Acting General Manager Palisades Nuclear Gen~rating Plant 27780 Blue Star Memorial Highway Covert, MI 49043-9530

SUBJECT:

DOCUMENTATION REQUEST TO SUPPORT THE PALISADES NUCLEAR GENERATING PLANT MOTOR OPERATED VALVE INSPECTION I would like to inform you that we int~nd to perform a Generic Letter (GL) 89-10 motor-operated valve (MOV) inspection at the Pali~ades Nuclear Generating Plant on September 12-16 and September 26-30, 1994.

This will be a Phase 2 inspection i"n accordance with Temporary Instruction 2515/109.

The

• inspection's main focus will be your GL 89-10 program implementation.

Specifically, we will re~iew your evaluation of differential pressure/full flow test results and the use of available data to justify assumptions and update your programmatic assumptions.

We will also review issues raised.

during the Phase 1 inspection (NRC Inspection Report No. 50-255/92014(DRS)).

The attachment to this letter lists infbrmation normally utilized during the inspection.

To facilitate the inspection, I request your assistance in having this information available at the beginning of the inspection.

We h~ve found that a short MOV program implementation status ~ummary is an

. effective way to supplement the documentation and enhance information exchange.

If you desir~ to make such a presentation, we suggest it be held immediately following the entrance meeting.

However, we request*that the presentation be no longer than one hour in duration.

• If you have any questions regarding the attachment, or the inspection itself,

__ pl ease_ co.ntact me_ (?_O~_)_ 829:-9731_ c>r John Jac9_bson (708_) 829-9736 of __ my staff.

9405260098 940523 PDR ADOCK 05000255 P

PDR

Attachment:

As stated See Attaihed Distribution

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I.,, v '- v Sincerely, OI':IGil~AL f:IGl:EJ BY GEC???ZY C. 1Y2IG'.11 G. C. Wright, Chief Engineering Branch Rl/_L f Ari~

05/t_//94

Consumers Power Company Distribution

- cc w/attachment:

Robert A. Fenech, Vice President, Nuclear Operations David W. Rogers, Safety and Licensing Director OC/LFDCB Resident Inspector, Riii James R. Padgett, Michigan Public Service Commission Mi~higan Department of Public Health*

Palisades, LPM, NRR SRI, Big.Rock Point G. E. Grant, RI II bee:

PUBLIC IE-01 2

May 23, 1994

ATTACHMENT GENERIC LETTER CGL) 89-10 INSPECTION DOCUMENTATION REQUEST The following is representative of material used during a Phase 2 motor-operated valve (MOV) inspection. It will significantly aid in inspection efficiency if the information is available at the beginning of the inspection.-

I.

Your current GL 89-10 program description, including position papers or other program support documents.

2.

The valve number and noun-name for each valve in your program.

3.

"Target Margin Calculations" for each MOV in your program, or other documents that contain the equivalent information, including:

a.

Motor: AC or DC, nominal voltage rating, nominal torque, speed.

b.

Actuator: manufacturer, type, size overall gear ratio, application factor, assum.ed efficiencies.

c.

Valve: Manufacturer, type, pressure rating, disc area used in calculations, stem diameter, assumed val~e factor, assumed stem friction coefficient, pitch and lead.

d.

De~ign Basis Conditions: differential pressure (DP), system pressure, worst case motor voltage, fluid temperature and flow conditions, and ambient accident temperature conditions.

4.

Information on valves that have been tested and the type of test performed (static or dynamic design basis test). The following information is of specific interest: valve factor observed for each valve which was DP tested, test DP, stem friction coefficients observed during static and design basis testing, percentage of load sensitive behavior observed during the DP test, and thrust observed at torque~

switch trip-under static-and DP conditions. -

5.

Procedures for:

a.

Calculating DP requirements

b.

Determining torque switch settings

c.

Preventive and corrective ~a~ntenance on MOVs, including post-maintenance testing requirements

d.

Performing DP and static testing

e.

Evaluating MOV test results

f.

Performing degraded voltage calculations

Attachment - Generic Letter 89-10 Inspection-Documentation Request*

2

g.

Trending MOV parameters and failures

6.

The schedule for testing and maintenance of MOVs during the period of the inspection.

7.

MOVs in safety-related systems which were not included in the GL 89-10 program and the reason for not including them.

8.

Specific justification for not performing design basis testing on MOVs included in the program.

9.

An MOV staff organizational chart and appropriate phone numbers.

10.

P&IDs for systems which include GL 89-10 MOVs..

11.

A schedule of expected testing and completion projections for*GL 89-10 commitments.

12.

Results of degraded voltage studies.

13.

Reiults of MDV sizing and swit~h setting calculations, if different than 3, above.

14.

Evaluations and corrective action, if appropriate, to address various information notices pertaining to pressure locking and thermal binding of MOVs.

15.

Diagnostic equipment manufacturer, devices used, and assumed accuracies.

16.

Information on MDV failures since January 1, 1992.

I 17;

• The last two MDV program self~assessments.

18.

Information on complet~d and proposed modifications to enhance MOV

_cap~_l:>Jl_ity. *- ___ --*---

19.

The following areas will also be addressed during the inspection:

a.

Justification for generic assumpti6ns for valve factors, ~tern friction coefficients under degraded ~nd non-degraded conditions, and load sensitive behavior.

b.

• Test information feedback into your GL 89-10 prog~am.

Specifically, steps taken to update programmatic values for valve factors, stem friction coefficients, and load sensitive behavior based on the results of your testing program.

c.

Assessment of ambient temperature effects on MOV motors, including actions taken {and planned) in response to the recent Limitorque Part 21 Notice, "Torque at Elevated Temperatures," dated May 13, 199.3.

i\\

Attachment - Generic Letter 89-10 Inspection-Documentation Request 3

d.

Actions planned to justify design basis capability for MOVs. which will not be subjected to DP testing.

e.

Justification demonstrating that static testing (performed to comply with the periodic verification reconunendations) is sufficient to demonstrate that MOVs can perform their design basis functions, if applicable.

20..

Trends, problems, or other information obtained through the MOV trending program, if any, and the resulting changes/corrective actions.

21.

Response to IN 93-98 regarding MOV motor brakes.

If response is not complete, please be prepared to discuss progress to date.

• 22.

The status of your actions in response to items identified in GL 89-10

. Inspection Report No. 50-255/92014(DRS).