ML17223A529

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Responds to Violations Noted in Insp Repts 50-335/89-29 & 50-389/89-29.Corrective Actions:Util Shifted Responsibility for All Limitorque Maint to One Dept & Counseled Personnel in Adherence to Procedures
ML17223A529
Person / Time
Site: Saint Lucie  NextEra Energy icon.png
Issue date: 02/22/1990
From: Goldberg J
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-90-71, NUDOCS 9003020142
Download: ML17223A529 (6)


See also: IR 05000335/1989029

Text

AO;ELBRATED

DISTRIBUTION

DEMONS'.TION

SYSTEM*s I I REGULATORY

INFORMATION

DISTRIBUTION

SYSTEM (RIDS)~~CESSION NBR: 9003020142

DOC.DATE: 90/02/22 NOTARIZED:

NO FACIL:50-335

St.Lucie Plant, Unit 1, Florida Power&Light Co.50-389 St.Lucie Plant, Unit 2, Florida Power&Light Co.AUTH.NAME AUTHOR AFFILIATION

GOLDBERG,J.H.

Florida Power&Light Co.RECIP.NAME

RECIPIENT AFFILIATION

Document Control Branch (Document Control Desk)SUBJECT: Responds to violations

noted in Insp Rept 50-335/89-29

&50-389/89-29.*

1 DISTRIBUTION

CODE: IEOID COPIES RECEIVED:LTR

ENCL SIZE: TITLE: General (50 Dkt)-Insp Rept/Notice

of Vi ation Response NOTES: DOCKET 05000335 05000389 RECIPXENT XD CODE/NAMEPD2'-2 PD RNAL: ACRS AEOD/DEIIB

DEDRO NRR/DLPQ/LPEB10

NRR/DREP/PEPB9D

NRR/DRIS/DXR

NRR/PMAS/ILRB12

BB (J REG F L 02 RGN FXLE 01 EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1 1 2 2 1 1 1 1'1 1 1 1 1 1 1 1 1 1 1 1 1 1 1'1 1 RECIPIENT ID CODE/NAME NORRXS,J AEOD AEOD/TPAD NRR SHANKMAN,S

NRR/DOEA DIR 11, NRR/DREP/PRPB11

NRR/DST/DIR

8E2 NUDOCS-ABSTRACT

OGC/HDS2 RES MORISSEAUiD

NRC PDR COPXES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 D.~R D 5.S NOTE TO ALL"RIDS" RECIPIENIS:

PLEASE HELP US TO REDUCE WASTETH CONTACI'HE.

DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT.20079)TO ELIMINATE YOUR NAME FROM DISIRIBUTION

LISIS FOR DOCUMENTS YOU DON'T NEEDI TOTAL NUMBER OF COPIES REQUIRED: LTTR 26 ENCL 26 A D 0

'P.O.Box14000,Juno

Beach,FL 33408.0420

PPt FEBRUII 2 2 QgsO L-90-71 10 CFR 2.201 U.S.Nuclear Regulatory

Commission

Attn: Document Control Desk Washington, D.C.20555 Gentlemen:

~~~~~Re: St.Lucie Units 1 and 2 Docket Nos.50-335 and 50-389 Inspection

Report 89-29 Res onse to Notice of Violation Florida Power&Light Company has reviewed the subject inspection

report, and pursuant to the provisions

of 10 CFR 2.201, the response is attached.Very truly yours, J.H.Goldberg Executive Vice President Nuclear Energy JHG/GRM/slh

Attachment

cc: Stewart D.Ebneter, Regional Administrator, USNRC Region II Senior Resident Inspector, USNRC, St.Lucie Plant 900g0~0142

<<~003+@900'222 PDR ADOCK 0-)9~+a///g

b 0

ATTACHMENT

RESPONSE TO NOTICE OF VIOLATION VIOLATION Title 10 Code of Federal Regulations, Part 50, Appendix B Criterion V requires, in part, that, activities

affecting quality shall be prescribed

by documented

instructions

or procedures

of a type appropriate

to the circumstances.

Instructions, and procedures

shall include appropriate

quantitative

or qualitative

acceptance

criteria for determining

that important activities

have been satisfactorily

accomplished.

Florida Power and Light procedure PR/PSL-1, Revision 13,"Control of Purchased Material, Equipment,~~~~~~~~~~~~~~~and Services," paragraph 5.10.requires the St.Lucie Plant Site Coordinator

to, approve material used on safety related work performed by contractors

to ensure proper quality level, and to provide adequate supervision

of the work.Florida Power and Light Administrative

Procedure No.0010432, Revision 39,"Nuclear Plant Work Orders," paragraph 8.6 requires, in part,"When parts or materials are used, attach all ROS forms and/or QC tags to the NPWO package....." Contrary to the above, the following was found as listed below: Unit 2 Limitorque

actuators MV-09-09, and MV-09-10 failed to operate as designed when called upon to do so September 23, 1989, following a manual reactor trip and the subsequent

receipt of an Auxiliary Feedwater Actuation System (AFAS)signal.Valves MV-09-09 and MV-09-10 are at the discharge of the Unit 2 motor driven auxiliary feedwater pumps, 2a and 2b, respectively.

0 MV-09-09 failed to operate as designed because of severe galling between the upper stem and stem nut, due to inadequate

lubrication.

The valve went full-open following receipt of the AFAS signal, however, operators could not close the valve remotely or locally.General Maintenance

Procedure Number 2-M-00180, revision 5 PM File 10500 covers the 18 month inspection

and lubrication

of Limitorque

actuators.

Valve stem lubrication

is covered in section 4.8 of the procedure, and the instructions

are to"Clean the valve stem with kerosene and rags;apply a coat of anti seize lubricant." These instructions

are inadequate

because they do not ensure an even coating of lubricant will be applied to the entire valve stem, including the portion of the valve stem in contact with the actuator stem nut.

t ATTACHMENT

Page 2 of 2 0 MV-09-10 failed to operate as designed due to a worn limit switch pinion drive gear.The result was the valve could only move in the closed direction, after initially being o'pened by the AFAS signal.The root cause was due to the installation

of an unauthorized

handwheel cover gasket which was 0.116".thick, resulting in improper meshing of the limit switch pinion and drive sleeve bevel gears.The proper gasket thickness should-have been 0.015".The licensee was unable to determine when-the unauthorized

gasket was installed, or account for the use of the gasket material it was cut from, in violation of the requirements

to account for material and parts used on safety related work.The licensee did not provide adequate and complete work procedures

for proper Limitorque

disassembly/assembly, and the vendor technical manuals in use at the time were not updated.The most recent vendor technical manual for Limitorque

actuators, SMBI-82C was available in 1982.The SMBI-82C technical manual contains instructions

for determining

the proper thickness of the handwheel cover gasket;the SMBI-170, issued in 1979, and in use during the time the unauthorized

handwheel gasket was installed (between 1984 and 1989)did not contain instructions

for determining

proper handwheel gasket thickness.

RESPONSE TO VIOLATION;

Florida Power 6 Light concurs with the violation.

2.-The reason for the violation was lack of detail in"Limitorque" maintenance

procedures

and failure to follow procedures.

3.Florida Power&Light has shifted responsibility

for all"Limitorque" maintenance

to one department

at the St.Lucie Plant and counselled

personnel in adherence to procedures.

A technical review of all contractor

implemented"Plant Work Orders" was performed.

4~'aintenance

instructions

for all"Limitorque" actuated valves have been written or revised to incorporate

manufacturers

instructions

and industry guidelines.

Technical support engineers perform a technical, review of contractor

related"Plant Work Orders" to, ensure compliance

to design specifications.

Compliance

has been achieved as of February 16, 1990.