ML20140G940

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Rev 21 to TS Tests TS 10A, Containment Airlock Door Seal Testing
ML20140G940
Person / Time
Site: Point Beach NextEra Energy icon.png
Issue date: 02/07/1997
From:
WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20140G761 List:
References
TS-10A, NUDOCS 9705120257
Download: ML20140G940 (11)
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Text

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, NUCLEAR POWER BUSINESS UNIT TS 10A TECHNICAL SPECIFICATION TESTS MAJOR Revision 21 CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2 1.0 PURPOSE The purpose of this procedure is to evaluate leakage across the airlock door seals to meet requirements of the containment leakage rate testing program basis document. Actual data is recorded and retained on Appendices A and B.

2.0 PRECAUTIONS AND LIMITATIONS 2.1 If there is any problem in performing this procedure, immediately notify the DSS. i Operability and test frequency of this equipment is a Technical Specification requirement.

2.2 Ensure there is no communication of containment atmosphere with facade atmosphere without an operator present as this would be a violation of containment integrity.

2.3 The outer third door may not be left in an unlocked, unattended condition unless a red flashing light is installed any time the containment is posted "HIGH RADIATION AREA."

2.4 If total type "B" and "C" minimum pathway leak rate exceeds 0.6 La (231,107 secm),

then entry into Technical Specification 15.3.6.A.d is required.

2.5 Numbered lead seals should be used on the lower hatch for the safety of any people inside containment.

3.0 DISCUSSION 3.1 This test accomplishes leak tests of both the inner and outer doors of the upper and lower containment hatches. A determination of seal leakage, under a vacuum condition, is made. The installed test systems for the upper hatch doors require vacuum pump calibration curves. Testing of the lower hatch doors utilizes a volumetric test device.

3.2 Leak rates are extrapolated to full (accident) pressure conditions. (Reference TER-C5257-41/42 by the Franklin Research Center, plant 12.3.3.) The largest upper and lower door leak rate plus total Type B and C test leak rate are compared against the l allowable containment leak rate to determine acceptability.

3.3 Use the included diagrams to identify test system components.

9705120257 970505 DR ADOCK 0500 1 Page1of11 INFORMATION USE ,

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NUCLEAR POWER BUSINESS UNIT TS 10A o

. TECHNICAL SPECIFICATION TESTS MAJOR Revision 21 .

CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997

~ UNIT 2 4.0 INITI AL CONDITIONS 1

4.1 Upper hatch vacuum pump calibrations (TS-10A, Appendix A) should be done:

2 4.1.1 Quarterly

4.1.2 Any time:
a. The pump has been serviced; or
b. The test volume (including the pump suction) has been opened.

. c. Vacuum gauges calibrated since previous surveillance.

4.2 Ensure vacuum pump oilers are half full. Replenish, if necessary, with SAE 10 detergent oil.

, 5.0 PROCEDURE NOTE: Section 5.1 may not need to be done. See Initial Conditions.

5.1 Unner Hatch Vacuum Pumn Calibration (TS-10A Anoendix A)

T 5.1.1 Inner Door 2

a. Ensure RWP requirements are met for entering the upper hatch.
b. Record atmospheric pressure, Patm, on Appendix A, using the barometer located in the Unit 1, El. 66', facade. l 1
c. If containment integrity has been established, verify that the inner door is l closed.

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  • CAUTION
  • THE OUTER THIRD DOOR MAY NOT BE LEFT IN AN UNLOCKED, UNATTENDED CONDITION UNLESS A RED FLASHING LIGHT IS .

INSTALLED ANY TIME THE CONTAINMENT IS POSTED "HIGH RADIATION AREA."

d. Enter the airlock, leaving the outer door open.  ;

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j.i NUCLEAR POWER BUSINESS UNIT TS 10A TECHNICAL SPECIFICATION TESTS MAJOR Revision 21

~

CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2

e. Complete Section 1 (Entering Containment Upper Personnel Airlock) of Attachment I to TS-10A, Appendix A.
f. Record as-found valve positic ns on Appendix A. i
g. Close valve 3.
h. If the pump is undergoing quarterly calibration, perform the following preventive maintenance:

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i

1. Unscrew the suction filter housing and remove the felt filter. l I

l 2. Turn the pump on, and spray Gast flushing solvent #AH255 directly into the pump intake for a minimum of three seconds.  ;

3. Allow the pump to operate for approximately two minutes, or until ,

all of the solvent has cleared the pump.

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4. Secure the pump, reinstall the felt filter and filter housing.  !
i. Remove the plug from the line at the vacuum gauge (downstream of valve 3).
j. Install the Volumetric tester, tubing and valves as shown in Figure 1.
1. Use of a 20 scem - 20 Ipm Volumetrics tester is preferred.
2. Install a swagelock plug on the Volumetrics tester vent port (on back ofhousing).
3. Open any manual isolation valves installed on the Volumetrics inlet port so the vacuum pump being tested can draw air through the Volumetrics tester
4. A 1/4" swagelock fitting is needed to connect the Volumetrics tester to the test volume at the vacuum gauge.
k. Connect the Volumetric tester to a 120 Vac power source and allow the tester to warm up for 10 minutes.
1. Perform the initial valve alignment per Appendix A.
m. Start the pump and run for five minutes.

Page 3 of 11 INFORMATION USE

NUCLEAR POWER BUSINESS UNIT TS 10A TECHNICAL SPECIFICATION TESTS MAJOR Revision 21 ,

CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 LHIT 2 l

n. Using the temporary globe valve, obtain flow sate versus vacuum readings for ten different valve positions, two on the low-range (0,150 secm), three j on the mid-range (300,450,600 secm). and five on the high-range (>700 ,

secm) of the Volumetries tester. Record the readings on Appendix A. )

One low-range flow rate should be zero.  ;

i

o. Secure the vacuum pump, turn off the Volumetrics tester and establish the l final valve alignment.
p. Disconnect tiie Volumetrics tester and replace the plug at the vacuum gauge.

NOTE: Ifdesired, test datafor Appendix B may be taken at this time.

q. Comnlete Section 2 (Exiting Containment Upper Personnel Airlock) of Attachment I to TS-10A, Appendix A. l I
r. Shut the outer door. Reestablish the normal airlock lineup. l l
s. Using Appendix A, prepare a pump performance curve by plotting differential pressure, AP, versus flow rate data, where AP = 29.92 - (Patm - Pvac). Plot both the low and mid-range values.
t. Compare the curve to previously run curves for acceptability. Curves should compare within 15%.

5.1.2 Outer Door

a. If containmcnt integrity has been established, verify inner and outer doors are shut and secured. Equalize airlock to containment pressure and cic -

the equalizing valve.

b. Perform Steps 5.1.1.f through 5.1.1.p and 5.1.1.r through 5.1.1.t for the outer door.

i Page 4 of 11 INFORMATION USE t

<< . NUCLEAR POWER BUSINESS UNIT

, TS 10A

TECHNICAL SPECIFICATION TESTS MAJOR '

Revision 21

. CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 4 UNIT 2 1 l c. Remove the swagelock plug that was installed on the Volumetrics tester vent port (on back of housing).

)

i i TEST ULuuE  ;

l j

g "m YT" VOWMETRICS TESTER (BACK) pvEMT Vacuum TEST NLET X I X 0 0 0 3 oLGBE VENT

, VALVE i

vAcuuu swAoEtoen

.- Puue PLuo msTAum l

! Figure 1 5.2 Unner Hatch Testine Procedure (TS-10A Annendix B) 5.2.1 Record the upper hatch outer door operating lever seal number on  !

Appendix B.  !

1

a. If the seal number is the same as that recorded on the previous test, testing
of the upper hatch doors is NOT required. l e i
b. If the seal is missing or its number is different from that recorded on the i previous test, it must be assumed that the doors have been operated.

Testing of the upper hatch doors is required.

5.2.2 Record atmospheric pressure, Patm, on Appendix B, using the barometer located in the Unit 1, E'. 66', facade.

5.2.3 Inner Door

a. Check containment pressure greater than or equal to zero.

IF containment pressure negative, THEN postpone this airlock door seal ter and trend containment pressure until greater than or equal to zero.

Containment ventilation may be required to meet testing periodicity.

b. Ensure RWP requirements are met for entering the upper hatch.

Page 5 of11 INFMMATION USE

NUCLEAR POWER BUSINESS UNIT TS 10A .

TECHNICAL SPECIFICATION TESTS MAJOR Revision 21 .

CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2

c. If containment integrity has been established, THEN verify that inner door and inner door vent valve is shut.

, l d. Open outer door vent valve to equalize pressure across outer door.

l e. Open outer door and enter airlock.

l f. Shut outer door.

, g. Complete Section 1 (Entering Contunnent Upper Personnel Airlock) of Attachment I to TS-10A, Appendix B.

h. Record on Appendix B as-found valve positions.
i. Verify or establish the test system initial alignment per Appendix B and j Figure 2.

j j. Position ystve 2 to vacuum pump.

k. Unisolate the 0-ring test volume by opening valve 1.
1. Start the pump and observe vacuum gauge. Allow pump to run until a steady vacuum is reached, but at least five minutes.
m. Record on Appendix B the vacuum reached, Pvac, ano the differential pressure, AP.
n. Turn the pump off and establish the final valve alignment per Appendix B and Figure 2.
o. Complete Section 2 (Exiting Containment Upper Personnel Airlock) of Attachment I to TS-10A, Appendix B.

l p. Open outer door and exit airlock.

l q. Shut outer door and oute- door vent valve.

r. Verify the normal airlock lineup per PBF-4217, " Containment Entry / Exit Checklist."
s. Using the pump performance curve and the differential pressure, AP, record on Appendix B, as-measured leak rate. -

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,- NUCLEAR POWER BUSINESS UNIT TS 10A TECHNICAL SPECIFICATION TESTS MAJOR Revision 21

!' CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 l UNIT 2 5.2.4 Outer Door J

a. Verify BOTH inner and outer doors are shut and secured.
b. Open outer door vent valve to equalize pressure across outer door.

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i l c. Shut outer door vent valve. l i

d. Record on Appendix B as-found valve positions.

I e. Verify or establish the test system initial alignment per Appendix B and I Figure 2.

f. Position valve 2 to vacuum pump.
g. Unisolate the O-ring test volume by opening valve 1.

i

h. Start the pump and observe vacuum gauge. Allow pump to run tmtil a steady vacuum is reached but at least five minutes.

f i. Record on Appendix B the vacuum reached, Pvac, and the differential pressure, AP.

j. Turn the pump off and establish the final valve alignment per Append'ix B and Figure 2.

i 1

k. Verify normal airlock lineup per PBF-4217," Containment Entry / Exit Checklist."

l 1. Seal shut outer door operating lever (not third door).

l m. Record new seal number on Appendix B.

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NUCLEAR POWER BUSINESS UNIT TS 10A l TECHNICAL SPECIFICATION TESTS MAJOR I Revision 21 l CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2

n. Using the pump performance curve and the differential pressure, AP, record on Appendix B, as-measured leak rate. l TEST

)umE J

l itTT TEST W E ]

X PANEL.

1 Pl- PI-VENT 41eaA0ll 1bSHUT 4190A03 i

van seen  :

3 3 OPEN PUMP F77A(B) 1 vacuuu '

PUMP Figure 2 5.3 Lower Hatch Testine Procedure (TS-10A Anoendix B) 5.3.1 Check lower hatch inner and outer door operating lever locking seals. Record on Appendix B the seal numbers.

a. If the seal numbers are the same as those recorded on the previous test, no I testmg of the lower hatch is required.
b. If the seals are missing or the numbers are different than those recorded on l the previous test, it must be assumed that the door (s) has been operated. ,

Testing of the lower hatch door (s) is required.

i 1 5.3.2 Inner Door l NOTE: Ifproblems are encountered in operating the vacuum pump, perform l 1

preventive maintenance cleaning as described in Step 5.1.1.h.

l l a. Check containment pressure greater than or equal to zero. '

i IF containment pressure negative, THEN postpone this airlock door seal l test and trend containmem pressure until greater than or equal to zero.

Containment ventilation may be required to meet testing periodicity.

i b. Ensure RWP requirements are met for entering the lower hatch.

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,. NUCLEAR POWER BUSINES3 UNIT TS 10A TECHNICAL SPECIFICATION TESTS MAJOR j Revision 21 CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2

c. Complete Section 3 (Entering Containment Lower Personnel Airlock) of Attachment I to TS-10A, Appendix B.

l

d. Verify the inner door is closed.
e. Enter the airlock, leaving the outer door open.
f. Ensure the test valve is closed, then remove the plug and connect the test I apparatus as shown in Figure 3.
g. Energize the Volumetrics tester. With the pump secured, record on Appendix B atmospheric pressure, as read on the test gauge.

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h. Open the test valve and start the vacuum pump.

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i. After the vacuum and leak rate stabilize (about five minutes), record on Appendix B test pressure and leak rate,
j. Turn off the pump, close the test valve and deenergize the Volumetrics i tester.

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k. Shut and cap the inner door test valve and ensure second operator valve j position verification is documented on Appendix B.

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1. Reestablish the normal airlock lineup.
  • CAUTION
  • NUMBERED LEAD SEALS SHOULD BE USED ON THE LOWER HATCH FOR PERSONNEL SAFETY.
m. Seal shut the inner door with numbered lead seals. Record on Appendix B the new seal numbers.

l 5.3.3 Outer Door

  • CAUTION
  • IF THE INNER DOOR HAS BEEN TESTED, ,

ENSURE THAT THE SECOND OPERATOR VALVE POSITION VERIFICATION HAS BEEN PERFORMED PRIOR TO STARTING THE TEST OF i THE OUTER DOOR.

l a. Verify BOTH inner and outer doors are shut and secured.

Page 9 of 11 INFORMATION USE

NUCLEAR POWER BUSINESS UNIT TS 10A

  • TECHNICAL SPECIFICATION TESTS MAJOR ,

Revision 21 ,

CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2 .

l b. Open outer door vent valve to equalize pressure across outer door.

c. Shut outer door vent valve, l
d. Ensure the test valve is closed, then remove the plug and connect the test apparatus as shown in Figure 3.
e. Energize the Volumetrics tester. With the pump secured, record on Appendix B etmospheric pressure, as read on test gauge.  ;
f. Open the test valve and start the vacuum pump.
g. After the vacuum and leak rate stabilize (about five minutes), record on  !

Appendix B test pressure and leak rate.

h. Turn oft the pump, close the test valve and deenergize the Volumetrics tester.
i. Shut and cap the outer door test valve and ensure second operator valve l position verification is documented on Appendix B. I i
j. Verify normal airlock lineup per PBF-4217, " Containment Entry / Exit  !

Checklist." .

l

  • CAUTION
  • NUMBERED LEAD SEALS SHOULD BE USED l ON Tile LOWER HATCH FOR PERSONNEL SAFETY.
k. Complete Section 4 (Exiting Containment Lower Personnel Airlock) of Attachment I to TS-10A, Appendix B.

l 1. Seat shut outer door operating lever.

Page 10 of11 INFORMATION USE

f NUCLEAR POWER BUSINESS UNIT TS 10A

. TECHNICAL SPECIFICATION TESTS MAJOR Revision 21 CONTAINMENT AIRLOCK DOOR SEAL TESTING February 7,1997 UNIT 2 l m. Record new seal number of Appendix B.

n. Return test equipment to storage.

VOLUMETRICS I

TESTER I I I I LEAK RATE PRESS ,

INLET TEST  !

>0 -o o o vAcutm GLOBE VENT PUMP VALVE Figure 3 6.0 ANALYSIS OF DATA Using as-measured leak rates and vacuum, calculate full pressure leak rates per Appendix B.

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