ML19224B163
| ML19224B163 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/13/1978 |
| From: | Metropolitan Edison Co |
| To: | Mullinix W NRC/IE |
| References | |
| 1410-V-27, TM-0007, TM-7, NUDOCS 7906140138 | |
| Download: ML19224B163 (4) | |
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j TMI DOCUMENTS DOCUMENT NO:
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METROPOLITAN EDISOU COMPANY.
Wilda R. Mullinix,.NRC 7906140138 3
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189 305 O
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,,,. n WORK REQUEST PROCEDURE
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- [2 3 W9 rf Vil Nuclear Station 07/13/78 Maintenance Procedure Format and Approval NTROLLED COPY Unit No.
STATION
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This form outlines the format and acts as a cover sheet for a maintenance procedure. Due to the limited size of the form, additional pages may be attached as required. Work Regaest procedure AP 1016 Section 6 should be used as a guide in preparing the maintenance procedure.
1410-V-27 1.
Procedure Title & $o.:
Leak Testing Electromatic Ralief Valve RC-R2 (Unit #2 Only) 2.
Purpose:
Test operation and leak test RC-R2 3.
Description of system or component to be worked on.
Unit #2 - Pressurizer Electromatic Relief valve i
4.
References- _ AP 1002 - Rules For The Protection Of Employees Working On ifachanical And 4.1 Electrical Apparatus.
4.2 AP 1003 - Radiation Protection Manual 5.
Special Tools, and lAaterials required.
5.1 Relief valve test stand and N, supply 5.2 Temporary #10 elec. cable and' switch 5.3 Dresser Tech. Rep and Dresser Inst. Manual 31533 VX 6.
Detailad Procedure (attach additional pages as required)
See attached Suparvisor of Maintenance recommends approval /! x
-6 / Date 7-f-77
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PORC RECOMMENDS APPROVAL Un - No.1 Chairman
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Date Unit No. 2 Chairrnan 72 9 M rv W ate7/n /78 j
3 UT.iT SUPERINTENDENT APPROVAL
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M Date Unit No. 2 fut/Date
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97 Unit No.1 7-/I 7/
- Standing Procedure se Sq;(eNisor of QC Date 189 306
- Note I hese approvals required only on Nuclear Safety Related! Radiation work permitiobs.
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1410-V-27 Revision 0
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'I 07/13/78 6.0 PROCEDURE APR 3 734 6.1 Install RC-R2 on the valve test stand in the Unit 1 Hot Machine Shop. Torque to 355 ft. lbs. in 25 ft. lb. incremen:_s. Adaptor ring may have to be used if test stand has a toague and groove type flange.
NOTE:
Special effort should be made to keep the valve as clean as possible in order to minimize chances of contamination of seating surfaces.
6.2 Blue tag electrical switch #10 in D.C. distribution panel 1-0 off.
(Switch will be used for temporary power to opv. ate RC-R2 on test stcnd in the Hot Machine Shop).
6.3 Run temporary #10 cable from D.C. panel 1-D switch #10 to the test stand and mount a safety switch at test stand fused with 5 AMP time delay fuses.
(This swtich will be used to operate the valve).
Run
- 10 cable from the safety switch to RC-R2 valve on the tes' stand.
Leave switch in the off position / fuses pulled.
NOTE:
This will supply 125 VDC for operation of RC-R2.
6.4 Test cat'e and equipment for short circuits and grounds.
6.5 Connect nitrogen supply to test stand.
NOTE:
Proper ventilation should be used to keep testing area reasonably free of N build-up.
2 CAUTION: When popping valve under pressure, all personnel shall remain clear of valve discharge area.
6.6 Close switch #10 at D.C. distribution panel 1-0.
6.7 Install the 4 AMP fuses at the safety switch.
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6.8 At 0 psi, electrically actuate the valve to insure the pilot valve is operational.
189 307 2.0 G
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1410-V-27 gfgg[1 Revision 0 07/13/78 APR 2 3 979 6.9 Gradually increase pressure to 2300 psig checking periodically for leaks by applying snoop directly to the seat area. There shall be no, observable bubbles.
6.10 At 2300 psig, electrically actuate RC-R2. Valve should lift.
There should be a loud, clean report.
Record lift pressure on data sheet.
Open the safety sw!tch to rescat the valve.
6.11 Re-pressurize to 2300 psig and check for laaks. There shall be no observable bubbles.
RECORD on data sheet.
6.12 Repeat test per steps 6.10 and 6.11 at least three times.
6.13 If bubbles are observed, repair the valve per the Dresser Instruction Manual / Dresser Tech Rep.
6.14 Repeat steps 6.8 thru 6.13 after repair is complete.
6.15 Disconnect temporary power installe'd in step 6.3.
6.16 Remove valve from test stand and install on pressurizer per Maintenance t
Procedure 2401-2.1.
189 308 3.0
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Revision 0 07/13/78 I[ -
RC-R2 LEAK TEST DATA SHEET P(essure at LIFT Bubbles present after LIFT NO.
(N 2300 psic) repressurization (Yes/f1 tio leaks evide.,t under pressure.
(Iero bubbles)
Signature /Date I
2 189 309 4.0 e