ML20138K424

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Rev 6 to OI 64A, Installation & Removal of Purge Valve Component Bypass Lines
ML20138K424
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 01/25/1997
From:
WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20138K159 List: ... further results
References
OI-64A, NUDOCS 9702180307
Download: ML20138K424 (7)
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NUCLEAR POWER BUSINESS UNIT OI 64A OPERATING INSTRUCTIONS MINOR i t Revision 6 i T INSTALLATION AND REMOVAL OF PURGE January 25,1997 VALVE COMPONENT BYPASS LINES Unit RECORD  !

Date PROCEDURE VERIFIED CURRENT AND Q{ECKED FOR TEMPORARY OLANGES IF FIELD g COPIES REQUIRED. USE PBF-0026 LAW NP 124 AND DO EQI COMPLETE n!!$ BLOCK.  !

BY: DATE: I I

1.0 PURPOSE The purpose of this instmetion is to provide guidance in the installation and removal of bypass ,

lines around the cam-operated air switch and the exhaust seal regulator for the T-ring air supply of the purge supply and exhaust valves. These components have a potential for leaking to atmosphere,'which would deplete the accumulator air supply ifIA is lost.  !

2.0 REFERENCES

IR 96-006, NRC Inspection Report; NRC Commitment for Operations procedures PMT/QC reviews.

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j 3.0 PRECAUTIONS AND LIMITATIONS 3.1 Purge valve component bypasses must be installed and removed only when the unit is in a cold shutdown condition, except as permitted per Technical Specification 15.3.6.C.a for the purpose of valve maintenance of a single valve at any one time.

3.2 The purge valves must be shut to install or remove purge valve component bypasses.

3.3 The purge valves should be red locked and tagged in the shut position when the component bypasses are installed.

i 3.4 The purge valves must not be stroked open when the component bypasses are installed, as damage to the T-ring sealing surface may result. i i

3.5 1 The air line fittings associated with the installation and removal of the purge valve component bypasses must be leak tested with snoop as a post-maintenance test to assure -

i proper operation of the system. This is especially important following bypass installation, l

as a small fitting leak may fail the system air drop test per IT-380(385).

NOTE: QA parts used (s.e., bypass lines andfittings) should be recorded on IT-380(385)

Task Sheet.

3.6 This OI is subordinate to the sequence of events as specified in TS-35(3,6).

I 9702180307 970210 PDR

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P ADOCK 05000301! Page 1 of 7 REFERENCE USE PDR :

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NUCLEAR POWER BUSINESS UNIT OI 64A OPERATING INSTRUCTIONS MINOR Revision 6 f INSTALLATION AND REMOVAL OF PURGE January 25,1997 VALVE COMPONENT BYPASS LINES INITIALS 4.0 INSTALLATION OF PURGE VALVE COMPONENT BYPASS LINES 4.1 Initial Conditions 4.1.1 Assemble the following tools and materials:

a. Two small crescent wrenches
b. Small pipe wrench
c. Pipe thread sealant, Neolube 100
  • d. Two 1/4" pipe couplings per valve (8 total)
  • e. Two 2-1/2" stainless steel hose clamps per valve (8 total)
f. One bottle of Snoop
g. Screwdriver or nut driver for hose clamps
  • Only for initial installation or as air leakage necessitates coupling replacement.

4.1.2 Select valve (s) to be worked:

VNPSE-3212, Purge exhaust valve outside containment.

VNPSE-3?l3, Purge exhaust valve inside containment.

VNPSE-3244, Purge supply valve outside containment.

VNPSE-3245, Purge supply valve inside .

containment.

4.1.3 An RWP is available for inside containment valves, if required.

4.1.4 The valves are cleaned and lubricated per 01-64, if required.,

Page 2 of 7 REFERENCE USE

NUCLEAR POWER BUSINESS UNIT 0164A OPERATING INSTRUCTIONS MINOR Revision 6 i INSTALLATION AND REMOVAL OF PURGE January 25,1997 9m VALVE COMPONENT BYPASS LINES INITIALS 4.1.5 Permission to Perform OI The conditions required to perform this 01 are consistent with required plant conditions, including equipment operability. Permission is granted to perform this OI.

DSS TIME DATE 4.2 Installation Procedure NOTE: Refe.~ence Figure 1, drawing ofpurge valve air system.

4.2.1 Isolate the local IA supply to the purge -

valve.

3212 3213 3244 3245 4.2.2 Remove the Swagelok cap from the vent valve on the air accumulator side of the supply line check valve. Open the vent valve and allow the system to depr:ssurize completely.

3212 3213 3244 3245 4.2.3 Disconnect the threaded tubing fittings from both sides of the cam-operated air switch.

Install a pipe coupling between the fittingc, per Figure 2.

3212 3213 3244 3245 4.2.4 Secure the coupling to the cam-operated air switch with a hose clamp.

3212 3213 3244 3245 4.2.5 Disconnect the threaded tubing fittings from Ports A and C of the T-ring exhaust seal regulator. Install a pipe coupling between the fittings, per Figure 2.

3212 3213 3244 3245 4.2.6 Secure the coupling to the exhaust seal regulator with a hose clamp.

3212 3213 3244 3245 4.2.7 Shut and cap the accumulator vent valve.

3212 3213 3244 3245 4.2.8 Open the local IA supply to the purge valve 3212 3213 3244 3245 l PMT

, 4.2.9 Snoop the new connections for leaks. .-

Correct as necessary.

3212 3213 3244 3245

  • , Page 3 of 7 REFERENCE USE

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l NUCLEAR POWER BUSINESS UNIT OI 64A l OPERATING INSTRUCTIONS MINOR l Revision 6 INSTALLATION AND REMOVAL OF PURGE January 25,1997  !

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VALVE COMPONENT BYPASS LINES INITIALS 5.0 REMOVAL OF PURGE VALVE COMPONENT BYPASS LINES 5.1 Initial Conditions 4

5.1.1 Assemble the following tools and materials: ,
a. Two small crescent wrenches
b. Small pipe wrench
c. Green Pipe Dope, Key Tite, I/N 911-5528
d. One bottle of Snoop
e. Screwdriver or nut driver for hose clamps 5.1.2 Select valve (s) to be worked:  ;

VNPSE-3212, Purge exhaust valve outside .

containment.

VNPSE-3213, Purge exhaust valve inside  ;

containment.

VNPSE-3244, Purge supply valve outside containment.

VNPSE-3245, Purge supply valve inside containment.

5.1.3 An RWP is available for inside containment valves, if required.

5.1.4 The unit is in a cold shutdown condition or as allowed by Technical Specification 15.3.6.c.

5.1.5 Permitsion to Perform OI The conditions required to perform this OI are consistent with required plant conditions, including equipment operability.

Permission is granted to perform this OI.

DSS TIME DATE Page 4 of 7 REFERENCE USE g # g 0 8

,, NUCLEAR POWER BUSINESS UNIT OI 64A OPERATING INSTRUCTIONS MINOR Revision 6 E

INSTALLATION AND REMOVAL OF PURGE January 25,1997

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VALVE COMPONENT BYPASS LINES INITIALS 5.2 Removal Procedure t

  • CAUTIONa IF A ILRT IS SCHEDULED, THEN REFERENCE ORT 9 FOR THE REMOVAL OF BYPASSES ON VNPSE-3213 AND 3245 AND ORT 10 FOR THE REMOVAL OF l BYPASSES ON VNPSE-3212 AND 3244.

l NOTE: Reference Figure 1, drawing ofpurge valve air  ;

system.

5.2.1 Isolate the local IA supply to the purge valve.

3212 3213 3244 3245

. 5.2.2 Remove the Swagelok cap from the vent valve on the air accumulator side of the supply line 4

check valve. Open the vent valve and allow the

, system to depressurize completely.

3212 3213 3244 3245

5.2.3 Remove the hose clamp from the coupling that is bypassing the cam-operated air switch.

3212 3213 3244 3245 l 5.2.4 Remove the threaded tubing fittings from the l coupling. l 3212 3213 3244 3245 5.2.5 Reinstall the tubing and fittings on the cam switch per Figure 3.

3212 3213 3244 3245 ,

5.2.6 Remove the hose clamp from the coupling that i is bypassing Ports A and C of the T-ring l exhaust seal regulator.  !

3212 3213 3244 3245 l 5.2.7 Remove the threaded tubing fittings from the coupling.

3212 3213 3244 3245 5.2.8 Reinstall the tubing and fittings on the exhaust seal regulator per Figure 3.

3212 3213 3244 3245 5.2.9 Shut and cap the accumulator vent valve.

3212 3213 3244 3245 5.2.10 Open the local IA supply to the purge valve.

3212 3213 3244 3245 l .P_.MI 5.2.11 Snoop the connectionsjust made for leaks and correct as necessary. Reference P&L 3.5.

3212 3213. 3244 3245 Page 5 of 7 REFERENCE USE

^ NUCLEAR POWER BUSINESS UNIT OI 64A OPERATING INSTRUCTIONS MINOR Revision 6 INSTALLATION AND REMOVAL OF PURGE January 25,1997 VALVE COMPONENT BYPASS LINES FIGURE I (ALIGNED FOR PURGE VALVE OPERATION)

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Page 6 of 7 REFERENCE USE e

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NUCLEAR POWER BUSINESS UNIT OI 64A OPERATING INSTRUCTIONS MINOR Revision 6 e INSTALLATION AND REMOVAL OF PURGE January 25,1997 p, VALVE COMPONENT BYPASS LINES FIGURE 2 rnou anu.an m m vuw 70 SEAL RE44AAron 144-A d soor SEAL PnESSunE FROM IA HEADER CAM. ,/

b OR -

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rnou nauan me un vum m asu asemATon 164-A k soor asu D .

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l Page 7 of 7 REFERENCE USE  !

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