ML20237L258
| ML20237L258 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/14/1987 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8708200145 | |
| Download: ML20237L258 (16) | |
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TENNESSEE VALLEY AUTHORITY
. CHATTANOOG A. TENNESSEE 374o1 SN 157B Lookout Pisce l
AUS 141987 U.S. Nuclear Regulatory Comnission ATTE:
Document Control Desk Washington,' D.C. ~20555
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Gentlemen:
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In the Matter of
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Dockst Nos. 50-327 i
Tennessee Valley Authority'
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50-328 SEQUOYAH NUCLEAR PLANT (SQN) UNITS 1 AND 2 - MACNTENAUCE INSTRUCTION (MI)
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ENHANCEMENT EFFORT - SCHEDULb' Y
r Enclosed is a listing.and SQN's schedule for completion of the high-p:lority mis and instrument maintenance instructions (IMIs) to be completed in the i
first' phase of the MI enhancement effort.' Submittal of this.achedule wari 3
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requested by NRC inspector L. J. Watson d ring an NRC Maintenance Program
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inspection (Inspection Report (IRT Nos. 50-327, -328/87-37) exit meeting s-conducted at SQN on June 26, 1987. vEnclosure 1 contalnu-details of the MI
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enhancement schedule, and enclosure 2 contains tha commitments contained in I
enclosure 1.
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's s Ifyouhave'anyquestions,pt' ass,edylephoneM.R.Hardingat 615/870-6422.
j To the best of my knowledge, I declare the statements contained herein are i
coinplete and true.
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Enclosures
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Mr. G. G. Zech, Assistant Director
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' 101 Marietta Street, NW, Suite 2900 1
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. Atlanta, Georgia 30323 Mr. J. A. Zwolinski, Assistant Director for Projects Division of TVA Projects Office of Special Projects U.S. Nuclear Re5ulatory Commission 4350 East. West H1 hway 5
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Sequoych'Muclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 379 l
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ENCLOSURE 1 MAINTENANCE INSTRUCTION (MI)
ENHANCEMENT EFFORT SCHEDULE This enclosure describes the improvements and schedules for SQN's enhancement effort for maintenance instructions (mis).
Specifically, this program implements the commitments contained in Volume 2, section 4.2.2, of the Sequoyah Nuclear Performance Plan (SNPP), for improvements of mis.
The surveillance instruction (SI) technical adequacy review program currently being implemented is the first major step to improving the quality ant usability of instructions utilized by the maintenance groups.
Enhar teph,h of s
mis will initially be a parallel effort with the remaining technical acequacy upgrade of unit 1 sis. The overall enhancement effort presently involves approximately 140 mechanical and 100 electrical mis, and will begin in August 1987 with enhancement of the high-priority mis listed in attachment 1.
n2 instructions contained in attachment I will be complete (enhanced to the iter's guide) by May 30, 1988.
Also included in the overall effort will be the enhancement of instrument maintenance instructions (IMIs) to the writer's guide.
The inclusion of these instructions in the enhancement effort will provide uniformity in all mis.
j The instrument instructions listed in attachment 1 will be enhanced in parallel with high-priority mis and completed by May 30, 1988.
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i The key elements of the enhancement effort are as follows:
l Upgrade and standardization of instructions.
l Simplification of instructions by reducing tiering and removing redundant loops / channels, etc., to make the instructions easier to perform.
Inclusion of procedural detail to ensure consistent performance and technical adequacy.
Conversion of IMIs to mis in order to standardize all mis.
Elimination of equipment from sis that is not required to satisfy technical specifications.
Development of mis to address equipment eliminated from the sis.
Development of mis to address specific tasks that have generic applications.
Cancellation of mis that are no longer needed.
In addition to the key elements identified above, validation / verification of instructions will be accomplished in accordance with SQN Standard Practice, SQM-1.
It should be noted that a staged performance and actual performance are methods of validation as identified in SOM-1.
To clarify the difference between validation and verification, SQN will revise SQM-1 to explain that a verification is a walk-through conducted before approval and validation is a staged or actual performance after approval.
This revision will be complete by November 20, 1987.
It should also be noted that validation of an instruction at the first performance is not required by SQM-1.
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e In support of the MI enhancement effort and to minimize the potential for rework, the corporate maintenance writers guide will be approved by the corporate maintenance organization and issued by August 31, 1987.
SQN plans to use the August 1987 through February 1988 instruction enhancement program experience to establish accurate time requirements for procedure development, review, and approval; and then, based on these req.iirements and the number of identified procedures to be revised / originated, a schedule for the remaining instructions can be developed. By February 29, 1988, SQN will finalize the list and schedule for enhancing the remaining MI/IMIs.
An estimated schedule for the improvements to all mis is provided in attachment 2.
The intended end result of the procedure enhancement program at SQN is that sis will be written to satisfy only surveillance requirements for specific
. equipment (instrument loop, channel, or component), and mis (either generic or specific) will be utilized for maintenance items. Additionally, all instructions (sis and mis) are to be of sufficient detail to ensure that tasks are performed and documented in a consistent and quality manner.
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INCLOSURE 1 ATTACHMENT 1 ELECTRICAL INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE MI-10.9.2 CRDM Motor Generator Sets MI-10.43 MOVATS Testing of MOV's MI-10.4 6900 Volt Vital Switchgear MI-14.2.1 Monthly Maintenance on Non-Class Batts New Instruction Installation of Fusible Links New Instruction Installation of Hydrogen Ignitors MI-2.7 Disassembly & Assembly of RCP Motors MI-10.53 Vital Battery Bus Rework MI-14.2.2 Annual Maintenance on Non-Class Batts MI-14.2.3 Quarterly Maintenance on Non-Class Batts MI-10.54 DG Battery Bus Rework MI-10.52 Overload Heaters in App R Circuits MI-15.2.1 Lubrication of Reliance Motors MI-1.5 Full Length RPI & CRDM Coils MI-9.2.1 Aux Bldg Crane MI-10.12 Vital Battery Maintenance MI-10.26 Intertie Transformer Bank 5 MI-10.13 Ground Detect, Vital Battery Boards i
MI-10.37 NAMCO Limit Switches MI-10.51 Vital Inverter Capacitor Change Out j
MI-10.24 Spare Main Transformer Replacement MI-9.5 Spent Fuel Pit Bridge Crane MI-10.38 ASCO Solenoid Valves 0141Q
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ENCLOSURE 1 ATTAHCMENT 1 MECHANICAL INSTRUCTIONS.
PROCEDURE NUMBER PROCEDURE TITLE MI-6.21 Repair / Replace Fabrication of ASME Section XI Comp.
MI-14.6 Remove / Replace Low Level Radwaste Storage Cell Cap MI-6.17 Instr.-Implementation of NRC Bulletin 79-14 MI-11.13 Removal of Rockwell Check Valve Threaded Covers MI-6.15 General Procedure Tightening Mech.
Bolted Joints s
MI-1.2 Removal / Replace of RPV Head and Attachments MI-6.5B Plugging RHR Ex Leaks MI-16.1 Repair /Maint Fire Doors & Fire Door Hardware
'MI-11.7 Base Metal Weed Repair of Carbon Steel Castings MI-4.6.1 Disassm/ Inspect /Reassm AFW Pump Turbine MI-11.6 Main Steam Isolation Valve (Inspect /Maint/ Repair)
MI-6.23 Remove / Replace PZR Personnel / Raceway Access Hatch MI-6.14 Plugging of Heat Exchanger Tube Leaks i
MI-6.5A Plugging Containment Spray Hx Leaks -
Units 1 and 2 MI-1.6 Removal / Replacement of Full Length CRDM 0141Q "Y'
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ENCLOSURE 1 ATTAHCMENT 1 l l
MECHANICAL INSTRUCTIONS l
PROCEDURE NUMBER PROCEDURE TITLE 1
MI-6.22 Control of Heavy Loads in Crit. Lifting Zones MI-5.3 Ice Servicing - Unit 1 and 2 MI-11.4 Maint. of CSSC Valves - Unit 1 and 2 l
MI-2.4 Alignment of Reactor Coolant Pump and
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Motor MI-1.11 Thimble Tube Installation MI-6.10 Centrifugal Charge Pump Incpection-Unit i and 2 l
MI-3.7 Prepare / Perform / Recover from S/G Sludge Lancing 1
MI-1.10 Incore Flux Thimble Cleaning and Lubrication MI-10.5.1 Boric Acid Transfer Pump - Unit i and 2 MI-6.18 Instr Review Sampling Program IE Bulletin 79-14 MI-6.13D Basic Engs. Hydraulic Snubber Repair / Rebuild MI-6.9 SI Pump Inspection - Unit 1 and 2 MI-4.7 Repair of P2R Safety Valves MI-3.6 Remove / Inspect / Replace MDAFW Pump l
I MI-6.13E Paul-Monroe Snubber Overhaul Instruction MI-13.1 Plugging of Condenser Tube Leaks During Power OPS MI-11.9 Maint. of Valves LCV-6-106A & B - Unit 1 and 2 0141Q i
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ENCLOSURE 1 ATTAHCMENT 1 MECHANICAL INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE MI-6.8 Containment Spray Pump Inspection-Unit J
1 and 2 MI-3.5 Main Steam Safety Valve Maintenance i
MI-14.5 Inspection / Reassembly of Low Pressure Turbine MI-2.8 Remove / Replace RCP Main Flange Bolts MI-10.6.2 Inspect / Repair Reactor Coolant Drain Tank Pump MI-2.2 Remove / Inspect / Replace Rx Coolant Pumps MI-8.14 Aux Waste Evaporator Feed Filter Change Out' MI-6.12 Remove /Dissassm/Reassm High Pressure Fire Pumps MI-8.12 Waste Evaporator Feed Filter Changeout MI-8.10 Spent Fuel Pit Skimmer Filter Changeout MI-8.4 Boric Acid Filter Changeout MI-8.3 Reactor Coolant Filter Changeout MI-8.1 Seal Water Injection Filter Changeout MI-6.11 Reciprocating Charge Pump Inspection MI-8.17 Refuel Water Purification Filter Changeout MI-8.15 Waste Evaporator Condensate Filter Changeout MI-8.8 Evaporator Feed Ion Exchange Filter Changeout i
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ENCLOSURE 1 ATTACHMENT 1 MECHANICAL INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE MI-8.6 Evaporator Condensate Filter Changeout MI-12.3 Removal of Cooling Tower Lift Pumps MI-8.9 Spent Fuel Pit Filter Changeout MI-8.5 Concentrates Boric Filter Changeout MI-8.2 Seal Water Return Filter Changeout MI-12.2.1 Inspect / Repair Containment Personnel Airlocks MI-12.1.1 Inspect / Repair Fuel Handling Exhaust t
Fans MI-8.16 Cask Decont. Collector Tk Filter Changeout MI-14.4 Inspection / Reassembly of High Pressure Turbine i
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ENCLOSURE 1 ATTACHMENT 1 INSTRUMENTATION INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE New Instruction Calibration of Bourdon Tube Pressure Indicators j
New Instruction Calibration of Misc Temperature Indicators New Instruction Instrument Loop Check New Instruction Calibration of Control Valves and Accessories l
New Instruction Generic Temperature Switch Calibration New Instruction Calibration of Misc. Temperature Indicators New Instruction Calibration of General Electric Model 555 Series (DIP) Transmitter New Instruction Calibration of General Electric Model 556 Transmitter New Instruction Calibration Check and Verification cf T/C's and RTDS New Instruction Calibration of Barton Model 332 Flow Transmitter New Instruction Calibration of Westinghouse Model 252 Indicator
-New Instruction Vital Instrument Sense Line Insulation Inspection Unit 1, 2 New Instruction Calibration of Foxboro Model 13A (D/P) 1 1
Transmitter j
l New Instruction Periodic Calib of Movable Incore i
Detector Systam (R) Unit 1,2 I
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ENCLOSURE 1 ATTACHMENT 1 INSTRUMENTATION INSTRUCTIONS i
PROCEDURE NUMBER PROCEDURE TITLE New Instruction Channel Calibration for Auxiliary Boiler Sys Oxygen Analyzer (Yearly)
New Instruction P-250 Process Computer Maintenance Unit l
1 and 2 New Instruction High Flux Adjustment After Shutdown (Source Range Drawer) Unit 1, 2
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New Instruction Calibration of Robertshaw Model 147-A5 Pressure Transmitter New Instruction P-250 Analog Input Conversion Polynomial Calibration New Instruction Calibration of Barksdale Model T1H Series Temperature Switches New Instruction Channel Cal For Mid Range Accid. Rad.
Monitors (18 months) Unit 0,1 New Instruction Calibration of Rosemount Model 1151 DP Series Transmitter New Instruction Periodic Calibration of Nuc Inst Sys Comparator and Rate Drawer (R) Unit 1, 2 I
New Instruction Verification of Computer Alarm Points i
Unit 0, 1, 2 New Instruction Channel Cal For Mid Range Accid Rad Monitor (18 Months) Unit 2 New Instruction Calibration of General Electric 560 Series (Bistable) Switch New Instruction Calibration of Statis-0-Ring Model 12 -
Series Pressure Switch j
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. ENCLOSURE 1-ATTACHMENT'1 l INSTRUMENTATION INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE New Instruction Calibration of Schoppeaeser-Barton 1
Model.199 Pressure Diff Indicating Switch
'New Instruction Calibration of General Electric Model J
531 - Series Recorder l
New' Instruction Calibration of General Electric Model 565 Series Savage Root Extractor New Instruction Calibration of Fisher Model 55B Level Indicator New-Instruction Calibration of Rosemount Model-444 Alpha 11ne Temperature Transmitter New Instruction Calibration of Custom Component Model 604 Pressure Switch
,New Instruction Calibration of Moore Model 585 High Pressure Selector Re'.ay New Instruction Calibration of Foxboro Model 62HB Controller New Instruction Calibration of Brooks Model 552 -
Series Flow Indicating Transmitter New Instruction Removal, Insta11atica and Calibration of.RCP Vibratloc and Pressurizer Relief Valve Accoustic Monitors Unit 1 and 2 New Instruction Calibration of Foxboro Model'40N Temperature Indicating Switch New Instruction Calibration of LFE Corporation Model 503 Series Temp Indicating Switch New Instruction Calibration of Conoflow Model T-25 (I/P) Series Converter i
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ENCLOSURE 1 ATTACHMENT 1 l INSTRUMENTATION INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE New Instruction Calibration of General Electric Model 549 Series Controller New Instruction Calibration of Foxboro Model 641 Recorder New Instruction Calibration of Fenwal Model 27121-0 Temperature Switch New Instruction Calibertion of Fisher Model 2500 Series Contr(iller New Instruction Calibration of Foxboro Model 43AP Controller
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i New Instruction Calibration of Magnetrol Model A153
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Level Switches New Instruction Calibration of Hach Model 1720 Turbidity Analyzer New Instruction Calibration of Robertshaw Model SP-220 Pressure Indicating Switch New Instruction Calibration of Barton Model 54018 Pressure Differential Indicator New Instruction Calibration of Foxboro Model 14 Se' ries Totalizer New Instruction Calibration of United Electric Model 358 Pressure Switch New Instruction Calibration of SIRCO Model 16 Series Pressure Switch New Instruction Calibration of Leeds and Northrup Type "H" Recorder New Instruction Calibration of Meriam Model 1226 5
Pressure Differential Ind Switch
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ENCLOSURE 1 ATTACFMENT 1 INSTRUMENTATION INSTRUCTIONS PROCEDURE NUMBER PROCEDURE TITLE New Instruction Calibration of Merroid Model 221 Level Switch New Instruction Calibration of Barksdale Model E1H Series Pressure Switch New Instruction Calibration of Eagle Eye Model 881A1 Flow Indicating Switch New Instruction Calibration of Honeywell-Tradeline Model T675 Series Temperature Switch New Instruction Calibration of Burline Model B Temperature Switch
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4 ENCLOSURE 2
- LIST OF COMMITMENTS i
1.
By May 30, 1988, SQN will complete the enhancement effort for the l
procedures in attachment 1.
2.
By February.29, 1988, SQN will finalize the list of schedule for enhancing l
the' remaining mis and IMIs.
3.
By August 31, 1987, the corporate maintenance writers guide will be issued.
4.
By November. 20, 1987, SQN will. revise SQN-1 to clarify the difference between validation arid verification.
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