ML20206T792

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Rev 1 to Surveillance Procedure 6.3.9.1, MSIV Accumulator Functional Test
ML20206T792
Person / Time
Site: Cooper Entergy icon.png
Issue date: 06/05/1986
From: Brungardt R, Tanya Smith
NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20206T643 List:
References
6.3.9.1, TAC-54682, NUDOCS 8607080226
Download: ML20206T792 (7)
v • d • e


Text

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' SURVEILLANCE PROCEDURE 6.3.9.I  !!SIV ACCUMULATO!! FUNCTIONAL TEST 1

I. PURPOSE A. To provide a detailed instruction for station personnel to p' rform e a functional test of the main steam isolation valve (MSIV) accumulators.

II. DISCUSSION A. The MSIV accumulators are designed to provide pneumatic pressure and volume to actuate the valves through 1/2 cycle (open to close) in the event of failure of the normal air supply. Check valves are installed in the accumulator system to prevent back leakage if the air supply is lost. j B. The accumulator test is performed by isolating and ableeding the sir '

supply to the accumulators, then attaching a pressure test gauge to the system. Accumulator pressure is adjusted to 95 psig. After i hopr the gauge pressure is observed and recorded. The minimum acceptable pressure is 70 psig to actuate the MSIV 1/2 cycle (open to closed).

III. REFERENCE MATERIAL .

A. USAR. .

1. Volume III,Section VII, Subsection 3.4.6.
2. Volu=e IV,Section X, Subsection 12.3.2.5.

B. Flow Diagrams.

1. B & R Drawing 2010; Reactor Building Instrument Air, Sheet 2. '
2. B & R Drawing 2041; Reactor Building Main Steam System.

C. Mechanical Drawings.

1. Jelco Drawing 92200-1; Air Accumulators. J IV. PREREQUISITES A. Obtain permission and signature from the Shift Supervisor before starting the test. .

B. Coordinate testing with the Control Room Operator.

C. The test shall be performed with the reactor in a cold shutdown condi-tion and with the drywell vented.

D. The MSIVs must be closed.

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R1 vised By/Date Reviewed By/Date prov d By/Date Rev Procedure Page 1 Of T. Smith 5/8/86 R. Brungardt 6/5/86 g" 1 6.3.9.1 3 Pages

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'V. LIMITATIONS I

A. Surveillance Requirements - Technical Specifications.

.1, None.

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  • B. Administrative Limits.

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1. Functional Test frequency is once per operating cycle.
2. Attachment "B" shall be used to record the test and filed as part of the station records.

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.VI. PRECAUTIONS

, A. Comply with the appropriate Special Work Permit.

4 B. Return the accumulator system to operational status after completion of the test. ,

VII. TEST EQUIPMENT I A. Test gauge - O to 200 psi Ashcroft or. equivalent with 1/4" tube fitting.

B. Soap bubble leak detector.

  • II.

. PROCEDURE I A. MSIV Accumulator Functional Test.

4 l 1. Obtain permission and signature from . the Shif t Supervisor before

starting the test.

, 2. Inform the Control Room Operator of intent to test the MSIV accumu-lators.

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3. Close the applicable instrument air supply . shutof f valve (for inboard MSIVs inside the northeast - drywell equipment hatch; for outboard MSIVs on the north wall, 916' level of the steam tunnel).

4 Install the test gauge'on.the MSIV accumulator test connection.

5. Adjust pressure in the accumulator to 95 psig ;by bleeding through-the test connection vent valve.

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6. -Uncap the tee on the pilot air supply line upstream of the'instru--

ment air _ supply check valve (to provide a' leak path).

7. Record the test gauge pressure on Attachment "B".
8. After-1 hour, again record the test pressure on Attachment "B".

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i Procsdure Number 6.3.9.1 Date /-etMb Revision 1 Pige 2 Of 3 Pages

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I Note: The minimum acceptable pressure is 70 psig. If the pressure is below this value, repressurize, check for leaks, and retest.

9. -After completion of the test, close the test connection- valve and remove the test gauge.
10. Recap the tee on the pilot air supply line upstream of the instru-ment air supply check valve.
11. Open the MSIV instrument air supply shutoff valve.
12. Perform independent (Licensed Operator or Instrument Technician)
verification that the valve closed in Step 3. has been reopened.and the cap is replaced on the tee.
13. Leak test (soap bubble) all fittings that have been disconnected for this test.
14. Inform the Control Room Operator that,the test is complete.

IX. ATTACHMENTS A. Not Applicable.

B. MSIV Accumulator Functional Test Data Sheets.

I C. MSIV Accumulator Instrument Air Supply Drawing. ,

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, Prccedure Number 6.3.9.1 Date d- f JP (k;,,, Revision- 1 Page 3- 10f 3 Pages

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j ATTACID!ENT "B" SURVEILLANCE PROCEDURE 6.3.9.1 MSIV ACCUMULATOR FUNCTIONAL TEST

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{ FUNCTIONAL TEST i

1.

PROCEDURE i DATA CHECK

l. Obtained permission and signature from Shift -

XXXXXXXXXXXXX Supervisor before starting test. ,

2. Informed Control Room Operator of intent to - - - - - - - - - ----- XXXXXXXXXXXXX perform test.

i 80A 80B 80C 80D 86A 86B 86C 86D

! 3. Closed instrument air supply shutoff valve. -

4. Installed test gauge on MSIV accumulator test X X X X X X X X connection.

[ 5. Bled pressure in accumulator to 95 psig. -----

6. Uncapped tee on pilot air supply line upstream X X X X X X X X of instrument air suoply check valve.
7. Recorded starting test gauge pressure. -- --

l 8. Recorded ending test pressure after I hour.

9. Closed test connection valve and removed test X X X X X X X X gauge. - ~~-- -- ---
10. Recapped tee on pilot air supply line upstream X X X X X X X X of instrument air supply check valve.
11. Opened MSIV instrument air supply shutoff valve. -

j 12. Performed independent (Licensed Operator or X X X X X X X X

Instrument Technician) verification that valve X X X X X X X X is open. ---- ----------
13. Leak tested all fittings previously disconnected.
14. Informed Control Room Operator test is complete.

. START PRESSURE END PRESSURE ACCUMULATOR (t = 0 Hr) (t = 1 Hr) INITIALS ,,,

80A

. 80B 80C SOD

. 86A 1

86B 86C 86D Note: The initial pressure should be the normal minimum supply pressure (95 psig). The minimum required to operate the MSIV 1/2 cycle is 70 psig.

Test Instrument Number:

Prcesdure Number 6.3.9.1 Date A- c Pfr Revision 1 Page 1 Of 2 Pages

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-ATTACIB!ENT "B" SURVEILLANCE PROCEDURE 6.3'.9.1 MSIV ACCUMULATOR FUNCTIONAL TEST FUNCTIONAL TEST Discrepancies: '

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  • Shift Supervisor / Permission To Start Date Shif t Supervisor /' ~ Test Complete And Reviewed Date l Shift Supervisor / 'NCR Written If Required Date 1 Work Item (s) Initiated If Required
Rsviewed By /

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Precedure Number 6.3.9.1 Date d". . .-C #d- . Revision 1 Page 2 .0f 2 Pages.

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== w u s uvuouan a uu ivn vrcanttuno unovna ATTACIRIENT "C" SURVEILLANCE PROCEDUitE 6.3.9.1 MSIV ACCintULATOP FUNCTIONAL TEST MSIV ACCUMULATOR INSTRUMENT AIR SUPPLY DRAWING ITEM DESCRIPTION MANUFACTURER SIZE MATERIAL MODEL QUANTITY i

1 Valve, Globe Jenkins I/2" Bronze 106A 1 2 Tee, Female Branch Swagelok 1/2" Brass B-810-3TTF -2 i

3 Tee, Union Swagelok 1/2" Brass B-810-3 1 4 Valve, Check Nupro 1/2" 316 SS' SS-8C4-1 1 5 Connector, Male Swagelok 1/2" x 1/4" 316 SS SS-400-1U8 1 1

6 Valve, Globe Whitey 1/4" 316 SS SS-IVS4 2 7 Tee, Union Swagelok 1/4'I 316 SS SS-400-3 1 i

j Procsdure Number 6.3.9.1 Date 4 '~.8.h Revision 1 Page 2 Of 2 Pages

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