ML20198A495

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Rev 8 to Preventive Maint Procedure PMP 9.5-23, Preventive Maint of Reactor Trip & Isolation Breakers
ML20198A495
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 05/07/1985
From:
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20198A483 List:
References
PMP-9.5-23, NUDOCS 8511050293
Download: ML20198A495 (27)
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Text

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PMP 9.5-23  !

Rsv. 8 MAJOR )

PMP95G Coc.necticut Yankee Preventive Maintenance Procedure PMP 9.5-23 PLANT OPER ATION5 REVIEW COMMITTEE APPROVAL

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A PREVENTIVE MAINTENANCE OF REACTOR Wrd b E 5 -

TRIP AND ISOLATION BREAKERS APPROVED .t T N ~ P RINTENoENT EFFECTiv lNm ~

TE /

1.0 OBJECTIVE V N d 1.1 This objective applies- to reactor trip and isolation breakers and associated centrols.

1.2 This procedure provides necessary steps to maintain and document condition of reactor trip and isolation breakers and associated controls.

2.0 LICENSE AND ADMINISTRATIVE REOUIREMENTS 2.1 None.

3.0 REFERENCES

3.1 Westinghouse Instruction Book I.B. 33-850-3C, Instructions for Types ,

DB-50, DBF-16 and DBL-50 Air Circuit Breakers.

3.2 Westinghouse Instruction Book, 100KW Rod Drive Power Supply.

3.3 Westinghouse Manual on. Circuit Breakers and associated equip 5ent.

3.4 Westinghouse Instructio'n Book,' Los Voltage Metal-Enclosed Switchgear.

3.5 Drawing EDSK 313551 Sheet 39, Rod Drive Power Supply.

3.6 Drawing EDSK 313551 Sheet 33, Scram Breaker'.

3.7 Westinghouse Drawing 653C966, Rod Drive Power Supply.

3.8 IEEE Standard 308, IEEE Standard Criteria for Class IE Electric Systems for Nuclear Power Generating' Stations.

3.9 Connecticut Yankee Accident Prevention Manual.

3.10 Production Plant Instructions for Clearance Ta~gging, Electrical and Mechanical. .

8511050293 851018 .

PDR ADOCK 05000213 PDR Page 1 of 28 l

.- PMP 9.5-23

. Rsv. 8 MAJOR

- PMP95G PERFORMER 3.11 Facility Description and Safety Analysis, Section 7.6.1, Rod Drive Control Systems.

3.12 Westinghouse Letter; Reactor Trip Breakers, CYS-74-24, dated April 4, 1974.

3.13 NUSCO Drawing 31203 Sheet 4.

3.14 NUSCO Drawing 31092 Sheet 4.

3.15 NUSCO Drawing 31092 Sheet 5.

3.16 We'stinghouse lett'ers, Reactor Trip Breaker Maintenance NSDTB-83-02 Rev. I and NSDTB-83-08.

! 3.1.7 Westinghouse letter dated 3/5/84 from Aram Nahabedian Jr.,

' Operating Time of Auxiliary Switch S.O. #4544788.

3.18 Westinghouse Owners Group Tech. Spec. Subcommittee R. T.

Breaker Program Comprehensive Maintenance Program for DB-50 R. T. Breakers.

4.0 PREREOUISITES 4.1 The Shift Supervisor shall sign to, acknowledge that involved reactor operational personne,1 are aware th,at the reactor trip and isolation breakers are being taken out of service.

Shif t Supervisor 4.2 Reactor Shutdown in accordance with Normal Op'erating Procedure

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NOP 2.3-2, Reactor Shutdown.

4.3 Reactor Trip and Rod Drive Power Supply breakers tagged out in accordance with the attached Tag List.

Shift Supervisor 4.4 Work Order , issued. ,

4.5 Test instrument calibration must be current.

4.6 Visicorder or equivalent available.

4.7 125VEC power supply available, fadjustable 10-125V, rated .5 amps at 125V). ,

4.8' Steps 6.50 and 6.51 only performed during refueling outages.

Isolation breakers only done during refueling outages.

4.9 Have available as " reference" previous maintenance" record of parameters for comparison of acceptance criteria. -

Page 2 of 28

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R v. 8 MAJOR 1 PMP95G

. i 5.0 PRECAUTIONS PERFORMER 1

5.1 Do not work on energized breaker. Check all tagging, and then test electrical components with voltage tester prior to performing work. J 5.2 Do not use compressed air when cleaning breakers.

. NOTE: Compressed air may be used on arc chutes when they are removed from the breaker.

5.3 After cleaning contacts, do not touch them'by hand.

5.4 Keep hands clear of moving parts of breakers when breakers are required to be operated.

5.5 Precautions have been read and are u'nderstood.

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6.0 PROCEDURE 6.1 Remove UVTA power. fuses UVFUI and UVFU2, shunt trip fuses ASFUI, ASFU2, BSFUI and BSFU2.

6.2 Install visicorder trace to monitor UvTA wire points 301 and 305 at UVTA fuses.

6.3 Connect a D.C. power supply.fadjustable 10-125V, rated .5 amp at 125V) across UVTA points.301 and 305.

i 6.4 For"A",ReactorTripBreakerinstallvisiIcordertraceacross ASBKR auxiliary contacts points 153 and 154 on terminal .

board 3TB.

. 6.5. For "B", Reactor Trip Breaker install visicorder trace across BSBKR auxiliary contact points 253 and 254 on terminal board

-3TB.

l NOTE: These are spare auxiliary contacts located in scram l ., breaker cabinet.

6.6 Start D.C. power supply connected to UVTA points 301 and 305.

6.7 Close ASBKR/BSBKR manually. -

6.8 Start visicorder on a fast speed. -

6.9 Turn off DC power supply.

4 6.10 Check for a good readabl,e trace.

6.11 If a good trace was not recorded, repeat steps 6.6 through 6.10.

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1 -

( -

Page'3 of~28

- Rsv. 8 MAJOR PMP95G PERFORMER 6.12 OC Re'auired Attach a visicorder trace from each R.T. breaker to this procedure and record calculated response time. (Time between power turned off and auxiliary contacts open)

Response Time ASBKR 6 cycles Actual Acceptance Criteria Maximum As left ceference time from previous test Resnense Time BSBKR 6 cycles Actual Acceptance Criteria Maxi =um l As left reference time from previous time QC inspece.or to verify and document on attached Inspection Plan.

6.13 Remove 125VDC power supply and visicorder connections.

If acce,ptance criteria not met stop and inform supervisor*

immediately.

  • 6.14 The UVTA has a recommended service life of 1250 operations.

If this limit has been reached, or is likely before the next maintenance replace the UVTA*yo be exceeded Number of UVTA operations ASBKR 1250 Actual ~~ Acceptance

' Criteria maximum Number of UVTA operations BSBKR 1250 i

Actual Acceptance Criteria maximum

  • 6.15 With the UV attachment deenergized but held in the reset position By a temporary restraining cord on the reset lever (see Attachment 10) close the breaker manually. Slowly

~ ~

release the temporary restraint allowing the UV attachment to perform the breaker trip function before the reset lever comes to rest.

Acceptance criteria: Unhesitant , smooth, posit {ve,snapactionoftheUVattachment, and breaker trip

  • Acceptable

~

Results of activity 1.

(sign one)

2. Unacceptable (Replace)

Page 4 ef 28 l -- ._- - - , - . .. - . . . ..

' - . Rav. 8 MAJOR PMP95G

- PERFORMER

  • 6.16 Dropout Voltage Test Connect a D.C. power supply (adjustable 10-125V, rated

.5 amps at 125V and.a voltmeter (21% accuracy) across the UVTA coil by means of test leads across secondary contact terminals. Apply rated voltage and close breaker I

. manually. Reduce voltage to within 5 to 6 volts of last recorded dropout voltage (on very first test make quick trial run) and then decrease voltage slowly (15 sec/ volt) until breaker trips. Repeat test twice and average the three readings. Record average dropout voltage before lubrication

  • volts __
  • 6.17 Remove the UVTA device from the breaker and operate it manually. Observe manual operation for stickiness or binding *3 .

Acceptance Criteria: No stickiness or binding.

Results of Activity satisfactory unsatisfactory (sign one)

NOTE: Do not apply solvent to coils, wires or other electrically insulated parts.

  • 6.18 Remove old lubricant from the~undervoltage trip device by

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cleaning with a solvent su'1 table for use on elec equipment (Swoosh, Penetone, Arco Cleaner, etc)*yrical

  • 6.19 Liberally apply lubricant to ' identified points of the UVTA.

'(See attachment 10 for lubrication points.) Manua'fy exercise the UVTA while lubricant is being applied *'-

NOTE: , Insure that lubricant is thoroughly mixed prior ,

to application. Lubricant to be Westinghouse 53701 GW or Molykote M-88. ,

6.20 Reinstall the undervoltage trip devices.

6.21 Operate each breaker manually and o'bserv? Pit it's undervoltage trip device trips the breakur.

  • 6.22 Repeat step 6.16 and record dropout voltag above recorded voltage becomes reference)*y(if first time

'The reference dropout voltage from records is_ volts Page 5 of 28

PMP 9.5-ZJ Rev. 8 MAJOR PMP95G -

PERFORMER Acceptance Criteria -Min. After Lubrication Acceptance 60% of rated Criteria Max.

UVTA 30% of rated UVTA Voltage dropout voltage voltage Actual 125V x 60% = 75v ASBKR 125v x 30% = 37.5v 125v x 60% = 75v.

BSBKR 125v x 30%.= 37.5v and Acceptance Criteria Min. 'After Lubrication Accep.tance (Reference Yoltage Criteria (Reference Voltage Minus dropout voltage Actual plus 5 volts) 5 volts) .

ASBKR BSBKR

  • 6.23 Verify No downward trend of after lubrication dropoutperiods*3 .

voltage, by 2 or more volts, over 2 successive test (Performer sign one) No downward trend Downward trend (Replace)

  • 6.24 QC Recuired Verify visible gap between UVTA trip lever and breaker trip bar (attachment 11 Figure 3) with the breaker half-way closed *3 QC inspector to ver15y and document on att, ached inspection

, plan. ,

  • 6.25 Verify UVTA mounting bolts' tight * .
  • 6.26 QC Required test mechanical trip force * . .

CAUTION:

Ensure overcurrent trip pacs are removed'from trip bar. Do nct replace these overcurrent attachments after testing is' completed.

6.26.1 Energize the undervoltage coil from a de source, at the rated voltage, with a capacity of at least 0.25 amperes.

6.26.2 Close the breaker manually.

6.26.3 Using a spring-force scale or a force gauge, pull or push up (per Attachment 11) vertically on the trip bar.

Record below the force at the instant of breaker trip. The trip force should be 31 oz. or less.

Page 6 of 28

. . PMP 9.'5-23

. Rsv. 8 MAJOR PMP95G PERFORMER 6.26.4 Acceptance Criteria Reference Trip Force Acceptance Trip Force is 31 or from Records Criteria less ounces i Trip Force 20%

of Reference Actual SSK3R -

l BSKBR j QC inspector to verify and document on attached Inspection Plan.

6.26.5 Close the breaker manually. De-energize the undervoltage coil and observe and record that the breaker trips.

6.26.6 The following steps are to establish that there is margin in the trip force of the undervoltage device.

6.26.7 Load the trip bar (per Attachment 11) with a weight of 20 oz., + 0 oz., (-) 4 oz.

6.26.8 Energize the undervoltage coil and manually close the breaker. -

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6.26.0 ,

'De-energize the underveltage coil and observe and record below that -the breaker trips. If the breaker .

does not trip, it is an indication that the undervoltage device requires replacement.

6.26.10 Remove the weights added in Step 7.

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6.2.11 Verify breaker trips with 20 oz.

(+0 oz. - 4 oz.) Loading of trip bar ___

  • 6.27 Verify that overcurrent trip pads removed from trip bar* .
  • 6.28 Operating Mechanism Alignment
  • 6.28.1 Verify trip bar moves freely by raising and lowering the bar by hand (it should feel like a free weight).

6.28.2 Restrain the UVTA reset lever with a cord or wire restraint (reset lever Attachment 10).

Independent verification restraint installed.

Ind. Verif.

CAUTION ,

1 I

Keep hands, face and tools away from moving parts of the breaker to avoid personal injury .

or equipment damage. .

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- YMP y.3-23 Rav. 8 MAJOR

.. PMP95G PERFORMER 6.28.3 Close breaker per steps 6.28.3.1 through 6.28.3.3 6.28.3.1 Rotate the manual operating handle slowly in a clockwise direction to move the contacts toward the closed position.

6.28.3.2 Observe and verify that all moving parts

. are in proper alignment and move freely and that all contacts are properly aligned.

I 6.28.3.3 If all contacts are in alignment and all parts move freely continue the clockwise rotation until the breaker is latched.

6.28.4 Push the " push t'o trip" button to trip the breaker.

6.28.4.1 Observe and verify that the toggle linkage collapses and the =oving contact assembly moves freely to the full:open position. .

. 6.28.4.2 Observe ~-ind verify that the links of the toggle mechanism reset ,

immediately after contact

. assembly opens.

6.28.4.3 Verify that the links are free to move without friction or binding.

'6.28.5 Remove the restraint from UVTA l'ever.

. Independent verification restraint removed.

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6.29Disconnectbusbarstoclear.greskerfortesting,and remo,ve breaker to test bench * .

6.30CleancontactsurfacesofBusgars,cleanbreakerwith soft brush and vacuum cleaner

  • 6.31 "Ducter" contacts to verify ' low contact resistance. Contact resistance should be consistent with previous readings. Record.

Do not include overcurrent trip device in ducter test.

Contact resistance Pole P Pole-N Page5of28

R$v.8M30R

. PMP95C PERFORMER i

  • 6.32 With breaker closed, test main contact insulation resistanc pole to pole, and pole to ground, using a 1000 volt megger*9 .

ACTUAL REFERENCE FROM RECORDS Pole N to Pole P Pole N to Ground .

Pole P to Ground.

Temperature ('C)

. Relative Humidity ACCEPTANCE CRITERIA: All readings equal'or exceed minimum I resistance value of I megohms and within 10" of temperature corrected " Reference" values.

  • 6.33 Test control circuit insulation resistan 500. volt megger. Record lowest reading *ge to ground using a Lowest resistance reading Temperature (*C)

Acceptance Criteria: Lowest value equals or exceeds minimum insulation value of 0.5 meg-ohms.

! NOTE: While inspecting breakers, inspect all hardware for tightness. .

  • 6.34 Arcing Contacts Check * -

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6.34.1 Remove the are chutes.

CAUTION: Contacts should not ce touched by, hand after cleaning.

6.34.2 Observe the condition of the contacts. Replace worn -

contacts or remove high spots by filing or sanding.

Clean after filing or sanding with a cleaning agent

.* such hs Acetone or its equivalent.

d 6.34.3 To remove arcing contacts, open the breaker and remove the are chutes and then the stationary contacts. Close the breaker and remove the moving contacts.

6.34.4 To install new contacts, close the breaker and install the moving contacts first, then open the breaker and replace the stationary arcing contacts. -

6.34.5 Slowly open the breake'r manually. The arcing contacts

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should open last. ,

Page 9 of 28

- + - - - - ' + * - - - T -~-'t--, wm*.---w - y

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. R;v. 8 MAJOR

. PMP95G PERFORMER 6.34.6 Slowly close.the breaker manually. The arcing contacts.

should open last.

6.34.7 QC Required. Observe the arcing contact gap with the breaker fully closed.

ACCEPTANCE CRITERIA ACCEPTANCE CRITERIA MINIMUM ACTUAL MAXIMUM ASBKR CONTACT GAP 0.078 in. 0.093 in BSKER CONTACT GAP 0.078 in 0.093 in QC inspector to verify and document in attached Inspection Plan, j'

6.34.8 'QC Required Adjust the gap, if necessary, by removing the cross bar and screwing the insulating link in or i out of the stud. Be sure to tighten the locknuts after each adjustment. .

ACCEPTANCE CRITERIA ACCEPTANCE CRITERIA

, MINIMUM ACTUAL MAXIMUM

! ASBKR CONTACT GAP 0.078 in. 0.093 in BSKER CONTACT GAP 0.078 in O.093 in QC inspector to verify and document in artached Inspection Plan.

NOTE: Do not over adjust as this will cause the spring to compress to the solid position, increasing the closing effort.

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~ 6.34.9 Check for over adjustment by prying the stationary 'are tips open to at least 1/16 in. gap.

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  • 6.35 Operating Mechanism Check *I ~

6.35.1 .The operating mechanism is non-adjustable.

( 6.35.2 To check for friction, raise the trip bar and slowly rotate t,he manual operating handle in the close direction. The linkage should follow the handle without sticking.

Page 10 of 28

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PMP 9.5-23

. R2v. 8 MAJOR PMP95G ,

PERFORMER

  • 6.36 Closing Solenoid Check *I 6.36.1. The closing solenoid is nonadjustable. It is designed for intermittent duty only. Check for loose bolts.

6.37 Closing Solenoid Coil Replacement NOTE: Perform Step 6.37 only if coil has failed.'

6.37.1 To remove the closing coil, trip the breaker.

Disconnect the closing coil leads from the control circuit wiring. Remove bolts, washers, relay release arm and plate. Drop closing coil out along with brass tube.

6.37.2 To replace closipg coil, be sure to replace the brass tube so that the stationary core and moving core are aligned in the tube. Reassemble the closing coil with ,

~

- brass tube and install bolts, washers, relay release arm and plate.

6.38 Control Relay Check

  • 6.38.1 The control relay. mounts directly under the auxiliary 1.

switch. .

6.38.2 Remove the relay cover and inspect the contact surfaces.

. 6.38.3 Manually push relay armature to close contacts.

6.38.4 Slowly close the breaker manually. The relay release arm should operate the relay trip assembly and the relay trip assembly .should open the relay contacts just before the breaker latches. This can best be verified by watching the

. pawl in the breaker operating mechanism, which should snap in place just af ter the relay contacts open.

6.38,.5 If the relay operation sequence is not correct, bend the .

relay release arm to suit. Make sure that the relay release arm does not rub on either side or the relay trip assembly lever operator.

6.38.6 With the breaker latched, de-energize and energize the relay operating coil. The relay contacts should not move toward the close position.

l l

6.38.7 l Trip the breaker.

6.38.8 Replace relay cover. .

Page 11 of 28

rne v.2 ca i R;v. & MAJOR  ;

, PNP 95G I

PERFORMER l

  • 6.39 Shunt Triup. Attachment Check
  • 6.39.1 The shunt trip mounts on top of the platform immediately to the right of the operating mechanism.

6.39.2 With the breaker in the open position, manually push the moving core against the stationary core and rotate the breaker handle to the closed position.

The breaker'should trip free.

6.39.3 QC REOUIRED: The trip lever of the shunt trip I should have from 1/32 to 1/8 in, clearance to the trip bar. .

. QC inspector to verify and document on attached l Inspection Plan.,

! 6.39.4 Check for proper coil resistance, and record.

Shunt Trip Coil Resistance ohms

  • 6.40 Auxiliary Switch Attachment C v ek*

6.40.1 The auxiliary switch Lounts on top cf the platform to the left of the operating mechanism.

6.40.2 Open the front cover and make'sdre the contacts

! are touching well.before the end of travel when

the breaker is operated. Replaca cover.

i

  • 6.41 Alarm Switch Attachment Check
  • 6.41.1 The alarm switch mounts on the platform to the_right of the operating mechanism.

! 6.41.2 Closethebreakermanuab.lyandtripbymeansof

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. the push to trip button. Ensure the switch coniiacts

, do not make contact. If contacts do make, then' j adjust mechanism linkage as necessary.

6.41.3 Close the breaker manually and trip by raising the trip bar. Ensure the switch contacts close.

  • 6.42 Inspect breaker internals for loose nuts and bolts * .

I Independent verification internals inspected Verifier

  • 6.43 Check that all retaining rings are 9ecurely in place on h11 visible shafts and pins as follows* : ,

i Moving Contact Hinge Pins 6 6.43.1 2 per pole 6.43.2 Stationary Arcing Contact Hinge Pins 6 2 per pole .

Page 12 of 28

e PMP 9.5-23 l Rav. 8 MAJOR l PHP95G PERFORMER 6.43.3 Cross bar 2 1 each end 6.43.4 Operating mechanism 8 5 left side 3 right side 6.43.5 Auxiliary Switch Linkage 3 l

6.43.6 Pantograph 6 3 top 3 bottom

  • i.e., cleanliness, 6.44 Check pyle bases for physical condition, cracks
  • 6.45 Insulating links physical condition chegk for cleanliness, chips, cracks and tightness of locknut
  • 6.46 Check all wiring and terminations for physical) condition, i.e., tightness and condit'on i of installation *
  • 6.47 Check are chutes for damaged and/or eroded plates.*

1 no erosion or damage (SIGN ONE) 2 moderate erosion

. . 3 heavy erosion or

. damaged plates.

. ~. (Replaces)

  • 6.48 OC REOUIRED: Inspect int'ernals of breaker for tools or miscellaneous hardware.

QC inspector to. verify and document on attached Inspection Plan. '

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6.49 Reinstall arc chutes after blowing them out with compressed air.

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6.50 overload Testing (Performed during refueling outage only)

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6.50.1 Manual overtravel adjustment DB50DC 6.50.1.1 Close breaker Note 1: Do not touch the trip bar Note 2: Be careful to keep face and hands out of path of parts which will move when breaker trips.

Note 3: Perform. steps 6.50.1.1 through 6.50.1.5 for each

. pole of the breaker.

. 6.50.1.2 Insert forked tool under mushroom head of trip plunger, lifting head against trip screw. See

~ Figure 3.

Page 13.of 28 ,

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Rsv. 8 MAJOR

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PMP95G PERFORMER 6.50.1.3 Adjust trip screw travel so as to just trip the breaker.

6.50.1.4 Close the breaker and check trip screw adjustment again.

6.50.1.5 Turn trip adjusting screv 1/2 turn counter clockwise to add standard overtravel.

6.50.1.6 Record manual override' adjustment comp'le t e .

Pole P Pole N -

6.50.2 Pickup Test

  • NOTE: Perform Steps 6.50.2.1 through 6.50.2.3 for both poles of the breaker.

l 6.50.2.1 Connect test unit to pole.

Note 1: Do not touch the trip bar.

No,te 2: Be careful to keep face and hands out of path of parts

.which will move dhen the

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br'saker trips.

6.50.2.2 Connect test unit to pole. ,

6.50.2.3 Apply test current and slowly increase '

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until breaker trips. Record current value at time of' crip on 6.50.2.4.

6.50.2.4 Record trip unit pickup current per steps 6.50.2.1 through 6.50.2.3.

l Pole P amps l

Pole N amps t

l 6.50.2.5 Acceptance: pickup current 1440 amps to 1760 amps..

i Performer 6.50.3 Instantaneous Test Note: Perform steps 6.50.3.1 through

6.50.3.5 for both poles for l both poles of the breaker. ,

l 6.50.3.1 Close the breaker.

Page 14 of 28

Rsv. 8 MAJOR

'PMP95G PERFORMER 6.50.3.2 Apply 2000 amps through pole.

Record the trip time in step 6.50.3.3 and compare with the published trip curves for that trip unit.

6.50.3.3 Apply 4000 amps through pole.

Record the. trip time in step 6.50.3.3 and compare with the published '

trip curves for that trip unit.

6.50.3.4 Test times in secosds per steps 6.50.3.1 through 6.50.3.3.

, Acceptance Pole P 2000 A <0.10 sec.

~

4000 A Pole N 2000 A <0.10 sec.

4D00 A 6.51 Post Maintenance Testing 6.51.1 Repeat step 6.28 Operating Mechanism' Alignment 6.51.2 QC REOUIRED: Repeat steps 6.1 t,hroOgh 6.11 Attach a visicorder trace from ca'ch R.T.

breaker to this procedure and record cal- ,

culated response time.

><6 CYC '

Response Time ASBKR Actual . Acceptance Maximum Response Time BSBKR <6 CYC Actual , Acceptance a

Maximum .

QC inspector to verify and document in attached Inspection Plan. ,

6.52 Reinstall reactor. trip breaker and connect bus bars per

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Attachment 6.

  • l

)

Page 15 of 28 i l

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Rav. 8 MAJOR PHP95G PERFORMER

  • 6.53 Thoroughly inspect break rs and cubicle for cleanliness.

' looseparts, tools,etc*9 Independent cleanliness inspection. Verified by 6.54 Using ductor check for low resistance contact connec-tion between bus bars and circuit breaker.

6.55 QC Required Install all control fuses temoved for ' testing (ductor all fuses before installation.

Hold Point: Inspector to verify all bus bar connections remade, all control fuses removed have been reinstalled, and cleanliness satis-factory. Document on attached Inspection Plan.

- Inspector ,

l

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6.56 Satisfactorily complete PMP 9.5-40 and sign to verify.

7.0 CHECK 0FF 7.1 Combined with procedure.

.8.0 ACCEPTANCE CRITERIA -

8.1 Reactor trip breaker A and B undervoltage a'nd shunt trip devices trip breakers. ,

8.2 M.G. set isolation breakers undervoltage trip devices trip

he breakers when operated manually.

, 8.3 The Shif t S,upervisor shall acknowledge the testing of section 6.5 has been completed and that he has cycled both reactor trip breakers and observed that they operate p,,roperly to prove. equipment operability. Shift 5upervisor 6.4 Shift Supervisor to sign pr,ocedure to acknowledge all ~

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tags removed and system returned to service.

, 9.0 TEST DATA OR EVALUATION 9.1 Included in procedure.

10.0 INSPECTI'ON PLAN '

10.1 Attached,

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11.0 FOOTNOTES .

11.1 W. G. Counsil letter to J. A. Zwolinski, A03381 dated January 29, 1985.

Rsv. 8 MAJOR PMP95G ATTACHMENT 1 Tag List for Isolating Reactor Trip and Rod Drive Power Supply Breakers.

Location Position Tag Color Title Bus 4-3A Open Red MG1-1A 480V Supply Breaker MG-1A 480V Supply Breaker Bus 4-lC Open Red DC Control Knife Switch Open Red MG-1B 480V Supply Breaker . Bus 7-16A MGI-1B 480V Supply Breaker Bus 7-18C Open Red DC Contro1 Xnife Switch Rod Drive Breaker Cubicle DC Dist. .

Panel "A" CKT. 12 Off Red Rod Control "A" Lighting Panel CIT 18 Off Red .

Rod Control "B" Lighting

- Panel CKT 16 Off Red N

Page 18 of 28 .

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