ML20138K307
| ML20138K307 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 01/31/1997 |
| From: | WISCONSIN ELECTRIC POWER CO. |
| To: | |
| Shared Package | |
| ML20138K159 | List:
|
| References | |
| NUDOCS 9702180146 | |
| Download: ML20138K307 (13) | |
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s NUCLEARPOWERBUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING Januan' 31.1997 Date RECORD DSS COP!Es REQUIRED. USE PBFMin IAW NP I 24 AND DO liQI COMPLETE TICS BLOCK PRocEDue vEamED CURRENT AND CHECKED FOR TEMPORARY CHANGE 5 IF FIELD
[
BY:
DATE:
DISCUSSION The procedure is divided into two sections for ease ofuse:
A.
30 cfm forced vent blower P-707B, and vent interruption.
B.
Purge exhaust valves and containment purge supply and exhaust fan operation.
A. 30 CFM FORCED VENT BLOWER t
1.0 PURPOSE l
To provide instruction for alignment, documentation, and notification for containment venting using the forced vent blower P-707B, and forced vent interruption.
l
2.0 REFERENCES
IR 96-006, NRC Inspection Report; NRC Commitment for Operations procedures PMT/QC i.
- reviews, 3.0 PRECAUTIONS AND LIMITATIONS 3.1 This procedure does not apply when performing the monthly Health Physics functional l'
test when procedure HPIP 7.51.4 is used. If HPIP 7.51.4 is act used, then OP-9C applies; I
all specified sampling must be done.
3.2 Ensure equipment necessary for release accountability monitoring is operating normally (i.e., CT, CRT, and PPCS. Verify PPCS logs are printing in the Control Room daily, usually at midnight).
3,3 Prior to and during the venting, samples must be taken as follows:
3.3.1 Tritium, noble gas, iodine, and particulate samples within a 12-hour period prior to starting the vent.
i 3.3.2 lodine and particulate sample started at beginning of the vent and collected and analyzed at the end of the vent.
9702180146 970210 P Page1of11 REFERENCE USE PDR ADOCK 050003011 P
PDR Q
NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Resision 38 CONTAINMENT VENTING AND PURGING January 31.1997 9,
3.4 If a rapid increase is noted in 1(2)RE-212 as compared to initial vent activity level, the venting should be secured until the cause has been evaluated. The Health Physics manager or Health Physics duty and call supervisor will normally perform the evaluation.
3.5 Based upon the isotopic content of containment atmosphere, a containment vent permit may have a time limited duration. To continue a forced vent evolution, resample the containment atmosphere and obtain a new containment vent permit.
3.6 When opening the personnel hatch inner door with the containment below atmospheric pressure, a personnel hazard exists. For this reason, forced venting of containment should be secured at 0 psig during at power operation and at 1/2 psig during the week prior to a scheduled outage.
4.0 INITIAL CONDITIONS i
4.1 HP has been informed that containment pressure has or will soon increase to a value at which 30 cfm forced containment venting is desired, thereby needing containment atmosphere samples. (Holidays or weekends may dictate an earlier than normal start as assurance the required Chemistry and HP personnel are available.)
4.2 A " Containment Vent Permit" has been received from Chemistry with initial release data complete as required.
4.3 RE-212 is monitoring the containment atmosphere or RE-305 is in service on the purge exhaust stack.
Equipment necessary for release accountability monitoring is operating normal. (Control 4.4 Room CT and/or technical support center PPCS CRT is operating and Control Room PPCS is printing daily logs.)
4.5 Notify Health Physics to set up air sampler (s) with air particulate and charcoal filters at the selected exhaust fan (s).
5.0 PROCEDURE 5.1 Complete the appropriate sections of the " Containment Vent Permit" which include:
5.1.1 Determine that the air particulate, iodine, noble gas, and tritium samples have been obtained within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> prior to starting the vent.
5.1.2 Verify air sampler (s) in service at the selected exhaust fan (s) with air particulate and charcoal filters in place.
5.1.3 Verify daily log printout functional in Control Room.
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NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING FROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31.1997 O
SECTION A i
5.1 A Obtain and record the source check readings for the selected RMS monitors (RE-212 and RE-305). Determine that a positive increase in monitor response is indicated over the steady state readings when performing the source check.
5.1.5 Obtain and record the steady state readings for the selected RMS monitors (RE-211 and RE-212).
5.1.6 Obtain and record the containment pressure and temperature.
5.2 Open RM-3200S, blower discharge to purge exhaust fans, and depending on Health Physics portable sampler placement, open either RM-3200T or RM-3200U to the selected exhaust fan (s).
5.3 Open valve RM-3200N, blower suction. Verify valve RM-3200P, blower discharge open.
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5.4 Check blower, P-707B, for proper oil level.
aCAUTIONa SEE TECH SPEC 15.3.6.B FOR CONTAINMENT PRESSURE LIMITS.
NOTE:
ifrelease continuesfor more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, then perform and record a daily vent flow rate and sampleflow rate venfication.
5.5 Start forced vent blower and verify proper flow as indicated by FIT-3289 locally and on the control room CRT. Record the date and time the vent was started on the containment vent permit.
4
- CA UTION*
SEE P&L 2.6 SECTION A CONCERNING CONT. LOW PRESSURE.
5.6 Continue the forced vent until containment pressure reaches the normal or pre-outage 10 w operating limit.
Normal Low Limit s O psig Pre-Outage Low Limit s 1/2 psig NOTE:
Approximately 2.5 days is a normal time spanfor aforced vent evolution.
5.7 To secure the forced vent:
5.7.1 Stop the forced vent blower by placing the conta nment forced vent blower switch on C-20 to the " PULL OUT" position.
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,-m 5.7.2 Shut manual valves RM-3200S, RM-3200T, and RM-3200U
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5.7.3 Shut blower suction valve RM-3200N Page 3 of11 REFERENCE USE
NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31,1997 SECTION A 5.7.4 Record the date and time the vent was secured.
5.8 Replace chains and locking devices, as required, on valver RM-3200S, RM-3200T, and RM-3200U to restore the normal alignment of CL-8A.
1 5.9 Complete applicable portions of the " Containment Vent Permit" and route as indicated on the form.
5.10 Notify Health Physics that the vent has been secured to ensure proper disposition of the portable sampler.
6.0 FORCED VENT INTERRUPTION AND RESTART NOTE:
RE-211 and RE-212 must be in serviceprior to aforced vent interruption.
NOTE:
If aforced vent is interruptedfor less than a continuous 20 minuteperiod, the actions in Section 6.0 are not req uired NOTE:
Aforced vent evolution may be interruptedfor a maximum ofeight hours without requiring resanpling containment atmosphere, To interrupt aforced vent, g
document thefollowing actions in the vent " interruption" section ofthe W
containment ventpermit.
Intermotion 6.1 Obtain the readings required by the " Containment Vent Permit" for vent interruption.
6.2 Inform Health Physics supervision that the vent is being intermpted.
6.3 Stop the forced vent blower (the RE-211/212 sample pump may also be secured at this time, if necessary).
6.4 Stop the purge stack sampler pump.
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NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31.1997 SECTION A NOTE:
Prior to restarting the vent, verify that RE-211 and RE-212 have been in operation for aperiod ofatleastfive minutes.
Restart 6.5 Obtain steady state readings for RE-211 and RE-212.
6.6 Obtain check source readings for RE-211 and RE-212 (no limits apply).
6.7 Compare the RE-211 and RE-212 readings taken in Step 6.5 with the initial readings for RE-211 and RE-212. If the new readings are s25% larger than the initial readings, proceed to Step 6.8 If the s25% larger criteria is not met, the vent must be terminated.
Resampling of containment atmosphere will be required if further venting of containment is necessary when the s25% larger restart criteria is not met. Complete all remaining applicable sections of the " Containment Vent Permit."
t 6.8 Start the forced vent blower and obtain the forced vent flow rate.
6.9 Start the purge stack sampler pump.
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6.10 Inform Health Physics supervision that the vent has been resurted.
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NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31.1997 B. PURGE EXHAUST VALVES AND CONTAINMENT PURGE SUPPLY AND EXHAUST FANS 1.0 PURPOSE To provide instruction for alignment documentation, and notification for containment venting using the purge exhaust valves and the containment purge supply and exhaust fans.
2.0 PRECAUTIONS AND LIMITATIONS 2.1 The purge supply and exhaust valves must ant be opened unless the unit is in a cold shutdown condition, or for repairs as allowed by T.S.15.3E.C.a. Normally the valves are locked shut when not in cold shutdown.
2.2 Do not attempt to reposition any purge supply or exhaust valve until OI-64A, Installation and Removal of Purge Valve Component Bypass Lines, Removal Section is complete.
Failure to do so may damage T-ring sealing surface.
2.3 If purging is preceded by venting, (using the exhaust valves), " Containment Vent P~mit,"
must be completed, in addition to " Containment Purge Permit."
2.4 A tritium, iodine, particulate, and noble gas samples analysis must be completed within a 12-hour period prior to starting the purge.
2.5 During a venting or purging evolution, continuous sampling for air particulates and iodines is required downstream of the purge exhaust charcoal filters.
2.6 When venting the containment, exhaust fans should not be allowed to rotate excessively fast.
2.7 Based upon the isotopic content of containment atmosphere, a containment vent and/or purge permit may have a time limited duration. To continue a containment vent past the permit limit, resample the containment atmosphere and obtain a new permit.
2.8 When venting the containment, the exhaust fan boots should be monitored to ensure they remain sealed.
2.9 Do not shift local damper control switch (es) to the "A" position until air pressure at the regulator is zero. (Purge exhaust valve VNPSE-3212 will open ful:y if the Control Room switch is being held in the open position.)
2.10 ICP 3.11, Appendix B, Containment Ventilation Isolation Continuity Check, must be performed prior to placing the purge system in service and anytime the containment h
ventilation isolation reset pushbuttons are depressed while the system is in service.
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I NUCLEARPOWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Reddon 38
- CONTAINMENT VENTING AND PURGING January 31.1997 SECTION B f
2.11 If a containment Type A test (ILRT) is required and the purge system is needed prior to completion of the Type A test, ensure TS-35 (TS-36) is done first to record as found leakage.
3.0 INITIAL CONDITIONS 1
. 3.1 Reactor coolant system temperature is and will be maintained <200 F for the duration of the vent / purge.
3.2 HP has been informed that containment atmosphere samples are required for containment venting / purging via the purge exhaust system.
3.3 A " Containment Purge Permit" and " Containment Vent Permit" have been received from Chemistry with initial release data complete as required.
3.4 The high alarm set point for RE-212 has been lowered to the containment purge value specified on the RMSASRB SP for RE-212.
4 3. ',
RE-212 or RE-305 is in service.
i 3.6 Equipment necessary for release accountability monitoring is operating normally. Control Room CT and PPCS are operating and daily release logs are being printed on Control i
Room PPCS.
s
~
3.7 OI-64A, Section 4.0, Removal of Purge Valve Component Bypass Lines, has been
{
completed. See P&L 2.2.
e 3.8 ICP 3.11, Appendix B, Containment Ventilation Isolation Continuity Check has been 4
performed. See P&L 2.10.
3.9 If a containment Type A test (ILRT) will be performed during this cold shutdown period, TS-35 (TS-36) has been completed to record as found leakage.
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NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31.1997 g
SECTION B 4.0 PROCEDURE NOTE:
When ventingfollowing a containment integratedleak rate test both purge exhaust units should be lined upfor operation.
NOTE:
Ifrelease continuesfor more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, then perform and record a daily sampleflow rate verification.
4.1 Complete the appropriate sections of the " Containment Purge Permit" which indude:
4.1.1 Determine that the air particulate, iodine, noble gas, and tritium samples have been obtained within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> prior to starting the purge.
4.1.2 Verify air sampler (s)in service at the selected purge exhaust fan (s) with air particulate and charcoal filters in place and with sample flow rate meter functioning.
4.1.3 Verify daily log printout functional in Control Room.
4.1.4 Obtain and record the source check readings for the selected RMS monitors g
(RE-212 and RE-305). Determine that a positive increase in monitor response W
is indicated over the steady state readings when performing the source check.
- CAUTIONa DO NOT OPEN ANY PURGE SUPPLY OR EXHAUST VALVE UNTIL ALL OF THE FOLLOWING HAVE BEEN SATISFIED:
(1) OI-64A, SEC 4.0 HAS BEEN COMPLETED, (PNEUMATIC JUMPER REMOVAL), OR DAMAGE MAY OCCUR TO THE T-RING SEALING SURFACE.
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(2) IT HAS BEEN CONFIRMED A CONTAINMENT TYPE A TEST IS NOT REQUIRED. IF A CONTAINMENT TYPE A TEST IS REQUIRED AND THE PURGE SYSTEM IS NEEDED PRIOR TO COMPLETION OF THE TYPE A TEST, ENSU'RE TS-35(TS-36)IS DO VE FIRST TO RECORD AS FOUND LEAKAGE.
(3) ICP 3.11, APPENDIX B (CONTINUITY CHECK) HAS BEEN COMPLETED TO ENSURE A CONTAINMENT VENTILATION ISOLATION SIGNAL WILL TRIP THE PURGE VALVES.
4.2 Prior to using the outside purge exhaust valve VNPSE-3212 as a throttle valve, check shut the inside purge exhaust valve VNPSE-3213 and stroke the outside valve VNPSE-3212 twice from the Control Room to verify proper operation.
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NUCIEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31.1997 A
SECTION B U
4.3 Reduce the air regulator outlet pressuri, for outside purge exhaust valve VNPSE 3212 to Zero.
4.4 Select the purge exhaust unit (s) with the operating sampler (s) and open its suction damper by positioning its local damper control switch to the "A" (open) position. (VNPSE-3210 damper is for west fan W6A)(VNPSE-3205 damper is for the east fan W6B) 4.5 Observe suction damper operator moves to the open position. (Rod retracted into operating cylinder) 46 Ilave Control Room open inside purge exhaust valve VNPSE-3213 and hold outside purge exhaust valve VNPSE-3212 control switch in the open position.
NOTE:
If a vacuum exists in containment, the DSS may elect to introduce air into containmentprior to continuing with thisprocedure.
4.7 Modulate the air supply regulator to crack open outside purge exhaust valve VNPSE-3212 (approximately 30 psig on the regulator) and commence venting the containment. Do not allow excessive rotation of the exhaust fan. Monitor fan boot inflation to ensure the boot remains sealed.
1 L
4.8 When venting is complete, return the air regulator to the full pressure position and release exhaust valve VNPSE-3212 control switch to the auto position, after VNPSE-3212 opens fully.
l 4.9 Shift the local damper control switch for the purge exhaust unit selected back to the "B" (auto) position.
4.10 Observe that the suction damper operator moves to the shut position.
l 4.11 If purging of the containment is not required, shut inside and outside purge exhaust i
valves VNPSE-3212 and VNPSE-3213.
4.11.1 Verify applicable portions ofIT-360 (IT-365) have been completed to demonstrate opeiability ofvalves.
4.11.2 If purging of the containment is required, continue with Step 4.12.
4.11.3 If purging of the containment is aql required, continue with 4.19.
4.12 Shift RE-211/212 to sample the purge exhaust stack.
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4.13 Open the purge supply and exhaust valves.
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NUCLEAR POWER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGrNG January 31.1997 SECTION B NOTE:
Check the differentialpressure across thefilters in the exhaustfans and theproper operation ofthefilters in the supplyfans during thisperiod ofpurging. Log the results in the auxiliary building log.
l 4.14 Run purge supply and exhaust fans as requested by Chemistry and Health Physics personnel.
NOTE:
Flow balancing is necessary when the containment is opened, the hatch interlocks are defeated, and the third door is in use.
4.15 Balance purge air flow, if necessary.
l 4.15.1 Proper balance of containment purge supply and exhaust flow is defined as:
Slight air flow into containment through both open containment hatches.
a.
- b. 3rd doors on both hatches remain shut without AID for closure.
- c. Neither 3rd door requires undo force to open (eg. door can be opened with one hand).
- CAUTIONa PURGE FAN CUBICLES ARE CONFINED SPACES AND SHOULD BE ENTERED USING THE APPROPRIATE EQUIPMENT AND PRECAUTIONS.
4.15.2 Adjustment of purge supply fan suction dampers should be accomplished with one supply and one exhaust fan running. Each supply fan d:tmper should be adjusted to assure conditions of 4.15.1 are met.
4.16 Secure fans when purge is completed.
4.17 Align RE-211/212 to sample the containment.
4.18 Shut purge supply and exhaust valves.
4.19 Return completed " Containment Vent Permit" and/or " Containment Purge Permit" to Chemistry.
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NUCLEAR POV/ER BUSINESS UNIT OP 9C OPERATING PROCEDURES MAJOR Revision 38 CONTAINMENT VENTING AND PURGING January 31.1997 SECTION B 4.20 If all purge system operations have been completed and containment integrity is to be established, complete the following in the order given:
4.20.1 Clean and lubricate purge supply and exhaust valves as required in accordance with OI-64 at the discretion of the shift superintendent.
4.20.2 Install pneumaticjumpers per OI-64A Sec 3.0 l
PMT 4.20.3 Afterjumper installation per 01-64A; complete IT-380 (IT-385) and then TS-35 (TS-36).
4.20.4 Complete applicable portions of CL-1B, " Containment Integrity Checklist."
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NUCLEAR POWER BUSINESS UNIT-RPINDEX REFUELING PROCEDURES Revision 84 January 31,1997 INDEX BIENNIAL PROCEDURE REVISION EFFECTIVE REVIEW
(,,
_ NUMBER PROCEDURE TITLE NUMBER DATE DATE RP1A Preparation for Refueling..
. 43 R 01/31/97 03/17/95 RP1B Recovery from Refueling.
. 33 R 01/31/97 09/06/96 RP-1C Refueling.
.. 36 R 04/04/96 04/04/96 RP-1C APP. A U2R22 Core Reload..
.17 R I1/01/96 10/19/95 RP-lC APP. B Fuel Shuffle for SFP U2R18.
.1 R
10/13/92 10/08/92 RP-!D Ul Filling and Draining the Unit 1 Refueling Cavity (RV Flange Level and Below) and Unit 1 Cavity Purification.
.17 R 10/04/96 10/04/96 RP-ID U2 Filling and Draining the Unit 2 Refueling Cavity (RV Flange Level and Below) and Unit 2 Cavity Purification.
.0 R 10/04/96 10/04/96 RP-2A Receipt of New Fuel Assemblies.
. 30 R 10/12/96 10/12/96 RP-2B Damaged New Fuel Assembly and Insen Visual Inspection..
.8 R 06/30/95 06/30/95 RP-2C New Fuel and Fuel Insen Inspection.
.15 R 10/12/96 10/12/96 RP-2D New RCCA and PSA Receipt.
.10 R 06/13/95 06/13/95 RP-3A Spent Fuel and Irradiated RCCA or PSA Inspection......
........I1 R
06/13/95 06/13/95 RP-4A Full-Length Control Rod Drive Shaft Unlatching i
and Latching..........
..I3 R 10/09/96 03/29/ %
l RP 6A Steam Generator Crevice Flush (Vacuum Mode).... 9 R 01/31/97 08/20/91 RP-6B Steam Gene ator Crevice Cleaning..
.2 R 01/20/94 01/20/94 RP-7 Dry Cask : 2 ding and Storage.
.3 R 04/29/96 09/06/95 RP-7 APP. A Special Equipment for Dry Fuel Cask Loading.
.1 I
09/06/95 07/10/95 RP-7 APP. B Special Tools for Dry Fuel Cask Loading..
.1 I
09/06/95 07/10/95 RP-7 Pan 1 Move the Ventilated Concrete Cask (VCC)into the Auxiliary Building..
.5 R 04/29/96 09/06/95 RP-7 Pan 2 Load the Multi-Assembly Sealed Basket (MSB) into the MSB Transfer Cask (MTC)...
.. 5 R 04/29/96 03/03/95 RP-7 Pan 3 Placing the MSB Transfer Cask (MTC)into the Spent Fuel Pool (SFP)...
..... 5 R 04/29/96 09/06/95 RP-7 Pan 4 Loading Spent Fuel into the Multi-Assembly Scaled Basket (MSB).............
...... 3 R 05/16/96 03/03/95 RP-7 Pan 5 Remove the Multi-Assembly Sealed Basket (MSB) i and MSB Transfer Cask (MTC) from the Spent Fuel Pool (SFP)..
.5 R 05/16/96 08/17/95 RP-7 Pan 6 Preparing a Multi-Assembly Scaled Basket (MSB) for Storage in a Ventilated Concrete Cask (VCC).. 5 R 05/20/96 08/17/95 RP-7 Pan 7 Loading the Multi-Assembly Scaled Basket (MSB) into a Ventilated Concrete Cask (VCC).
...4R 05/16/96 03/03/95
,bv C = Continuous Use (T-Temporary Change)
R = Reference Use Page1of2
.I = Information Use.
NUCLEARPOWER BUSINESS UNIT RPINDEX REFUELING PROCEDURES Revision 84 January 31,1997 INDEX BIENNIAL PROCEDURE REVISION EFFECTIVE REVIEW NUMBER PROCEDURE TITLE NUMBER DATE DATE RP-7 Part 8 Transfer and Placement of the Ventilated Storage Cask (VSC) to the Independent Spent Fuel Storage Installation (ISFSI).
.2 R 09/06/95 03/03/95 RP-8 Unloading the Multi-Assembly Scaled Basket (MSB)..
.3 R 10/12/96 07/10/95 RP-8 APP. A Special Equipment for Dry Fuel Cask Unloading..
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09/06/95 07/13/95 RP-8 APP. B Special Tools for Dry Fuel Cask Unloading..
.1 1
09/06/95 07/13/95 RP-8 Part 1 Transfer the Ventilated Storage Cask (VSC)into the Auxiliary Building from the ISFSI.
.2 R 10/12/96 07/10/95 RP-8 Part 2 Removal of a Multi-Assembly Sealed Basket (MSB) from the Ventilated Concrete Cask (VCC)..
.2 R 10/12/96 07/10/95 RP-8 Part 3 Preparing A Multi-Assembly Sealed Basket (MSB) for Placement into the Spent Fuel Pool (SFP).
.1 R
12/08/95 09/25/95 RP-8 Part 4 Placing the MSB Transfer Cask (MTC) into the Spent Fuel Pool (SFP)..
.2 R 10/11/96 07/10/95 RP-8 Part 5 Remove the MSB Transfer Cask (MTC) from the Spent Fuel Pool (SFP)...
.2 R 10/12/96 07/10/95 O
i e
O (T-Temporary Change)
C = Continuous Use R = Reference Use Page 2 of 2 I = Information Use 4