ML17251A633
| ML17251A633 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 03/27/1985 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17251A631 | List: |
| References | |
| M-32.2, NUDOCS 8604140078 | |
| Download: ML17251A633 (43) | |
Text
e G)NNA STATIQN UNIT ¹a COi;IPLETED ROCHESTER GAS AND ELECTRIC CORP R&XbN GINNA STATION CONTROLLED COPY NUMBER PROCEDURE NO.
M-32.2 REV.
NO.
7 DB-50 REACTOR TRIP CIRCUIT BREAKER INSPECTION MAINTENANCE AND TEST TECHNICAL REVIEW PORC REVIEW DATE MAR 2 7 '985 QC R
EW PLANT S ERINTENDENT APR 02!9"5 EFFECTIVE DATE QA~
NON-QA CATEGORY 1.0 REVIEWED BY: ~
THIS PROCEDURE CONTAINS 35 PAGES SCO+X+0078 860407 PDR ADOCK 05000244 P
M-32.2'1 M-32.2 DB-50 REACTOR TRIP CIRCUIT BREAKER INSPECTION MAINTENANCE AND TEST 1.0 PURPOSE To provide instructions to perform inspection, maintenance and test of DB-50 Reactor Trip and Reactor Trip Bypass Breakers.
2.0 2 '
REFERENCES:
Westinghouse switchgear division instruction book 1B-33-850-3C instructions for DB-50, DBF-16 and DBL-50 air circuit breakers.
2 '
2 '
2 '
2.5 2.6 2 '
Westinghouse Technical Bulletin NSD-TB-83-02, Rev.
1, dated September 13, 1983.
Maintenance program for DB-50 reactor.trip switchgear revision 0, October 14, 1983.
NRC generic letter 83-28.
November 23, 1984 NRC request for additional information concerning generic letter 83-28.
W FCN RGE 0-40503 shunt coils RT switchgear.
RG&E's 2/28/84 response to NRC's request for supplemental information concerning generic letter 83-28.
3.0 INITIALCONDITIONS
3.1 Notify QC prior to starting the job, for assignment of Inspection Personnel.
3 '
Plant may be in any mode of operations.
M-32.2:2 3.3 The Shift Supervisor and Head Control Operator shall be notified just prior to any inspection or maintenance on the reactor trip system.
Shift Supervisor Head Control Operator 4.0 F 1 PRECAUTIONS:
Obtain replacement parts in accordance with A-801..
5.0 INSTRUCTIONS
5.1 Indicate here and on front cover of procedure the breaker to be worked on.
N/A other spaces not required.
5.2 l.
5.'2. 1 Bypass Remove from Service:
At power (mark N/A if not at power).
Spare 5
~ 2
~ 1 ~ 1 Establish communications between Control Room, Relay Room,
and Reactor Trip Breaker.
5.2 '.2 Electricians place reactor trip bypass breaker into position to bypass breaker under going maintenance, and rack into the "Fully Racked In" position.
Verify that 20 AST and 20 ET indicating lights are illuminated at breaker panel.
5.2.1.3 "Close" By-pass Breaker by actuation of reset pushbutton switch in reactor logic test cabinet of indicating lights are NOT illuminated.
5 '.1.4 "Trip" By-pass Breaker by actuation of pushbutton trip,.switch in.reactor logic test cabinet of the indicating lights are illuminated.
M-32.2:3 5.2.1.5 "Close" By-pass Breaker by actuation of reset pushbutton
5'.1
~ 6 "Trip" Reactor Trip Breaker to be worked on by actuation of pushbutton trip switch in the reactor logic test cabinet for that train.
5.3 Notify I/C shop foreman to perform PT-32.5, Reactor Trip Breakers "A"
& "B" Train Response Time Testing.
5 '
Hold breaker in accordance with A-1401 Station Holding Rules, if applicable.
5.5 5.5.1 5.5 '.1
~Test in Tri Bar Fi 1
Energize the undervoltage coil from a dc source, at the rated voltage, with a capacity of at least 0.25
~ amperes.
5.5.1
~ 2 5.5.1.2.1 Mechanical trip force test.
Raise and lower the trip bar by hand to assure that it does not bind; i.e., it should feel like a free weight.
Close the breaker and initiate a trip by pushing down the positioning lever.
Log results on data sheet.
- 5. 5. 1. 2. 2 Close the breaker manually.
5.5.1.2.3 Add weights to weight stand via bear'ing arrangement pulling vertically on the trip bar.
Record the total weight (weights and weight stand) added to the bar.
The trip force should be 870 grams or less.
Log results on data sheet.
- 5. 5. 1. 2. 4 The fo 1 1 owing steps are to establish that there is margin in the trip force of the undervoltage device.
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5.5.1.2.5 Load the trip bar (see attached drawing) with a
weight of 460 grams minimum to 560 grams maximum.
5.5.1.2.6 Manually close the breaker.
5.5.1.2.7 De-energize the undervoltage coil and observe and that the breaker trips. If the breaker does not trip, it is an indication that the undervoltage device requires cleaning and/or lubrication or replacement.
Log results on data sheet.
5.5.1.2.8 Re-energize the undervoltage coil and manually close breaker.
5.5.1
~ 2 '
Apply 70 VDC +.5v to shunt trip circuit and apply trip signal.
Repeat 5 times.
If breaker -fails to trip notify I&C Supervisor.
Log results on data sheet.
- 5. 5. 1. 2. 10 Remove the weights.
5 '
5.6.1
~Cleanin When cleaning is required, it should consist of wiping with paper towels or lint-free cloths to remove dust and dirt.
In some cases, brushing with a medium bristle or stiff bristle brush may be necessary.
Do not use a wire brush.
Brushing should be supplemented by vacuuming.
If sticky or gummy substances are present, a mild solvent such as Stoddards Solvent may be used.
The preferred method is to apply the solvent by dampening a paper towel and wiping the affected area.
In confined areas or in cleaning small parts, apply the solvent sparingly using a small brush.
Do not apply the solvent to coils, wires, or other electrically insulated parts.
CAUTIoN:
Keep sparks and flames away.
Do not breathe large c[uantities of vapor.'void excess contact with skin.
M-32.2:6 step 5.6.1 cont.
Except for use in cleaning of removed arc chutes, avoid the use of high pressure air.
Dirt, grit or other substances can be driven into spaces between parts creating friction, which would not otherwise occur.
Log results on data sheet.
5.7 5.7.1 0 eratin Mechanism Fi 1
NOTE:
This test will require two persons.
Since the Undervoltage Trip Attachment (UVTA) is deenergized it must be temporarily restrained in the reset position.
One person will be required to hold back the UVTA reset lever (Figure 4) by means of a wire or nylon cord (12" minimum).
The other person will perform the following:
5.7.F 1 5.7.1.2 CAUTION:
Keep hands and tools well away from moving parts of the breaker to avoid personal injury or equipment.
Rotate the manual ope,matin'g handle
~slowl in a
clockwise direction to move the contacts toward the closed position.
Observe whether all moving parts are in proper alignment and move freely.
5.7.1.3 5.7.1.4 Be sure that the contacts are clean and properly aligned.
If the contacts are in alignment and all parts move freely, continue the clockwise rotation until the breaker is latched.
M-32.2:7 5.7.1
~ 5 Push the "push-to-trip" button to trip the breaker.
the toggle linkage should collapse and the moving contact assembly move freely to the full open position.
This should be followed'mmediately by complete resetting of the links in the toggle mechanism.
The links must always be free to move without friction or binding.
Log results on data sheet.
5.7.1.6 Remove temporary restraining wire or cord from UV trip attachment.
5 '
5.7.2.1 Retainin Rin s:
Check that all retaining rings are securely in place on all visible shafts and pins as follows:
Hinge Pins on Station Arcing Contact Hinge Pins on moveable main contact Crossbar Operating Mechanism Auxiliary Switch Linkage Pantograph Positioning and Interlock Lever Shunt Trip Attachment Undervoltage Attachment Log results on data sheet.
Total 43
5.7.3 Bolts
5.7.3.1 Check all visible bolts and nuts for tightness.
Log results on data sheet.
5.7.4 Pole Bases:
5.7
~ 4 ~ 1 Physical condition, i.e. cleanliness, cracks.
Log results on data sheet.
M-32.2:8 5.7.5 5.7.5 '
While a.somewhat pitted, mottled and sooty appearance is normal, be alert for heavy erosion or broken plates.
Damaged chutes should be replaced.
Log results on data sheet.
5.7.6 5.7.6.1 Arcin
& Main Contacts Fi 1
Check for roughness, spawling, galling 6 distortion.
Log results on data sheet.
NOTE:
Some tarnishing is normal due to silver oxides and sulfides.
Dress or replace per sec. V-A-l.
5.7.6 '
The DB-50 arcing contact should touch first on closing, open last on opening.
Contact pressure on the mains is maintained by adjusting gap G to 050-093 inches.
This gap is adjusted by removing the cross BHR and screwing the insulting link in or out on the stud.
Be sure to tighten the lock nuts after each adjustment.
Log results on data sheet.
CAUTION:
Do not over-adj ust as this will cause the contact springs to compress to the solid position and thus increase the closing effort.
5.7.6.3 Check for over-adjustment by prying the stationary arc tips open to at least 1/16 inch gap.
Log results on data sheet.
5.7.6.4 Re-install the three arc chutes.
H-32.2:9 4o SHUNT TRIP ATTACHNENT WZTH U V, ATTACHNENT REMOVED MECHANZSN, STLTICPCLRY
~a CONTACT
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CLOSING SQLENIQD - CONSTRUCTION DETAILS M-32.2:10 g,t Iq
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M-32.2:12 5.7.7 5.7.F 1 Insulatin Link Fi 1
Check for cleanliness,
- chips, cracks, and tightness of locknut.
Log results on data sheet.
5.7.8 w~irin 5.7.8.1 Check condition of insulation and terminations.
Log results on data sheet.
5.7.9 5,7.9.1 Closin Solenoid Fi 2
Check for loose bolts.
Log results on data sheet.
5.7.10 Control Rela Fi 3
5.7. 10 ~ 1 Examine contacts for burning wear
'& pitting; replace if necessary.
Log results on data sheet.
5.7.11 5.7.11.1 Undervolta e Tri Attachment UVTA Fi 4
With the UV attachment deenergized but held in the reset position by a temporary restraining wire or cord on the reset
- lever, (per activity 2a) the breaker is closed manually.
- Then, the temporary restraint is ~slowl released*,
allowing UV attachment to perform the breaker trip function before the reset lever comes to rest.
Monitor for unhesitant,
- smoother, positive, snap-action of the UV attachment, and breaker trip.
Log results on data sheet.
- CAUTION: Be sure to hold the very end of the restraining line and keep.both hands, as well as equipment, away from crossbar which will snap back as breaker trips.
5.7.11.2 If lubrication of UV Attachment is considered necessary, lubricate per Attachment l.
(NA otherwise) 5.7.11.3 With UV coil energized inspect for visible.gap between UVTA trip level and breaker trip bar with breaker half-way closed.
Log results on data sheet.
M-32.2e13 5.7.11.4 Dro out Volta e Test:
5.7.11.4.1 Connect a d.c.
power supply (adjustable 10-125V, rated 5 amps at 125V) and a voltmeter
(+
1% accuracy) across UVTA coil by means of test leads across SECONDARY CONTACT terminals. 'pply rated voltage and close breaker manually.
NOTE Obtain "Reference" dropout voltage from previous completed procedure for this breaker and log on data sheet.
5.7.11.4.2 Reduce voltage to within 5-6 volts of last recorded dropout voltage (on very first test make quick trial run) and then decrease voltage
~slowl (15 sec/volt) until breaker trips.
Repeat test twice and average the three readings.
Record the average dropout voltage on KZ test on this UTVA, then the measurement also becomes its "REFERENCE" dropout voltage.
5.7.11.4.3
~Re lace UTVA under the following criteria, based on "after lubrication" data:
a)
Dropout voltage is greater than 75 VDC and less than 37.5 VDC.
b)
Dropout voltage differs by more than
+
5 volts from the "REFERENCE" voltage.
Replaced Not Replaced 5.7.11.5 Check mounting bolt tightness.
5.7. 12 5.7.12.1 Shunt Tri Attachment Fi 5)
With the breaker in the open position, manually push the moving core against the stationary core (should feel free and non-binding) and rotate the breaker handle to the closed position.
The breaker should be trip free.
(Trip lever will raise trip bar which prevents 'closing of breaker.)
Log results on data sheet.-
5.7
~ 12.2, The trip lever of the shunt trip should have from 1/32 to 1/8 inch clearance to the trip bar.
Log results on data sheet;
M-32.2:14 5.7.12.3 Check mounting bolts.
Log results on data sheet.
5.7.12.4
\\
Close breaker and apply 70 VDC to shunt coil of closed breaker via SECONDARY CONTACT Terminals.
If breaker does not trip, replace SHUNT TRIP attachment.
Log results on data sheet.
tf-32.2:15
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SPRING TRIP LEVER
- Undervoltage Trip Attachment - Construction Details
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SHUNT TRIP ATTACHHENT LOCATION AND CONSTRUCTION DETAILS I'1
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M-32.2 17 5.7.13 Auxiliar Switches Fi 6) 5.7. 13. 1 Manually operate breaker and check contact engagement in the breaker "CLOSED" and "OPEN" positions.
Log results on data sheet.
5.7.13.2 1nspect contacts for burning
& pitting.
Log results on data sheet.
5.7.13.3 Check mounting bolts.
Log results on data sheet.
5.7.14 5 ' '4 '
Positionin Lever:
The spring-loaded positioning lever on the left side of the breaker should be inspected for:
Lever Should be undistorted and move freely.
Stop pin should be undistorted.
Trip arm should be undistorted.
Clearance between trip tab and trip bar on breaker positioning attachment on left side of breaker.
(Clearance should be 1/8" minimum to 3/16" maximum.)
Log results on data sheet.
M-32.2:18 AUXILIARY SWITCH CONSTRUCTION DETAILS
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M-32.2:19 5.7.15 5.7.15 '
Cell Interlocks:
Depress the positioning interlock lever on left side of breaker; closed breaker should trip.
5.8 Breaker Me er Readin s:
5
~ 8
~ 1 With breaker open measure resistance between each phase to ground and phase to phase, using 500 volt megger.
Log results on data, sheet.
5.8.2 With breaker closed measure resistance between each phase to ground and phase to phase, using a 500 volt megger.
Log results on data sheet.
5 '
~Testin 5'.1 Tri Bar Fi 1
5.9.1.1 Energize the undervoltage coil from a dc source, at the rated voltage, with a capacity of at least 0.24 amperes.
5.9.1.2 5.9.1.F 1 Mechanical trip force test.
Raise and lower the trip bar by hand to assure that it does not bind; i.e., it should feel like a free weight.
Close the breaker and initiate a trip by pushing down the position lever.
Log results on data sheet.
5.9.1.2.2 Close the breaker manually.
5.9.1 '
Add weights to weight stand via bearing arrangement pulling vertically on the trip bar.
Record the total weight (weights and weight stand) added to the bar.
The trip force should be 870 grams or less.
Log results'n. data sheet.
5.9.1.2.4 The following steps are to establish that there is margin in the trip force of the undervoltage device.
l
M-32.2:20 5.9.1.2.5 Load the trip bar (see
~ attached drawing) with a
weight of 460 grams minimum to 560 grams maximum.
- 5. 9. 1. 2. 6 Manually close, the breaker.
5.9.1.2.7 De-energize the undervoltage coil and observe and that the breaker trips.
If the breaker does not trip, it is an indication that the undervoltage device requires replacement.
Log results on data sheet.
5.9.1.2.8 Re-energize the undervoltage coil and manually close breaker.
5.9.1.2.9 Apply 70 VDC +.5v to shunt trip circuit and apply trip signal.
Repeat 5 times.
If breaker fails to trip notify I&C Supervisor.
Log results on data sheet.
5.9.1.2.10 Remove the weights.
5.10 5.10.1 Function Check Prior to Returnin to Service:
Check for any tools and equipment left in breaker.
5.10.2 After inspection and maintenance, perform a final operational check of the UV Attachment and breaker trip action by closing the breaker either manually or electrically, then tripped by de-energizing of the UV Attachment.
Repeat this 10 times and document on attached data sheet.
NOTE:
This applies to post maintenance testing and is not associated with PT or RSSP test procedures.
- 5. 11 Switch ear
Enclosure:
(N/A this step if switchgear is alive and/or if maintenance.was on spare Rx breaker.
)
I J
M-32.2:21 5.11.1 Inspect both the stationary portions of the main, as well as, secondary disconnecting devices for abnormal wear and overheating.
Discolorations of the surface is not harmful unless corrosion due to atmospheric conditions is sufficiently severe as to leave deposits on the contact surfaces.
Any deposits must be removed by rubbing with a clean cloth moistened with Stoddard's
- Solvent, otherwise a new-contact has to be installed.
Log results on data sheet.
- 5. 11 ~ 2 Remove dust fr'm buses,
~ connections,
. supports, enclosure surfaces etc. using the methods outlined in Section III.
5.- 11 ~ 3 Check buses, primary connections and supports for tight bolts;
- also, check all secondary wiring connections at the terminal blocks.
Log 'results on data sheet.
5
~ll~ 4 Inspect the positioning stop bracket and support rails for signs of mechanical damage and corrosion.
Log results on data sheet.
5.11.5 E
Check breaker support wheels for free movement.
Inspect cell interlock switches for distortion, free movement and test for proper contact operation.
Log results on data sheet.
5.11.6 Megger test switchgear bus and wiring.
Log results on data sheet.
5.11.7 Place the breaker in the cubicle, place it in the "test" position, and close the breaker.
5.11.7.1 Depress the position lever, and the breaker should trip.
5.11.7.2 Try closing the breaker between the "test" and "connected" position; it should not close.
M-32.2:22 Remove hold on breaker.
Notify Results and Test supervisor of maintenance h
~brea er using test procedures PT-32.5 (Reactor Trip Breakers "A" & "B" Train Response Time. Testing).
I&C Supervisor and the Electric Shops Foreman review the results of this procedure and evaluate them to the previous breaker maintenance results.
COMMENTS:
Electric Foreman I&C Supervisor COMPLETED BY:
DATE COMPLETED:
ELECTRICIAN FOREMAN:
Q.
C.
SUPERVISION:
RESULTS
& TEST SUPERVISION:
I&C SUPERVISOR:
POST PORC REVIEW DATE:
H-32.2:23 El IV LUBRICATION 17180:4 36 Rev.'0
Ol/TA FIELD Li/BRlCA / /ON H-32.2:2EI
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'NLARGED j/lEN'B'-LuBRICArE SuRPACZS INO/ CA TE O i@ITH 637O ( l" A',QO 5 ~a EHLAR'S~D V/EW 8 hI,,
L" Rev.
0
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H-32,2:25 IV Lubrication The only points requiring periodic re-lubrication on the DB-50, as configured for reactor trip service, are located on the UV trip attach-These should be lubricated with 5370IGM lubricant {see "C" below) as follows:
Lubrication Points "" Referring to the attached sketch (Fig. 8), the following points require periodic lubrication:
1 2
3 4
5 Latch to latch spring Latch loop to latch guide-pin Latch to latch pin Latch pivot pin Pin running through the trip spring NOTE:
The latch pin, latch guide pin, latch pivot pin, and the trip spring pin are to be lubricated at all points along their lengths where there is existing or potential metal-to-metal
- contact, including ends where pins pass through support brackets.
In addition, lubricant should be applied to bracket. inside surfaces which may contact latch pivot pin ends.
Lubrication Techni ues 1.
The lubricant is to be applied using the container and dispensing tube provided with the Lubrication Kit.
Lubricant handling and application techniques are further described in the Instruction Sheet accompanying the Kit, and reproduced on following pages.
2.
The lubrication may be performed without'removing the UVTA from its mounting.
- However, special care is required to reach all lubrication points by varying the direction of the application bottle dispensing tube.
17180:4 38 Rev.
0
H-32.2:26 3.
Dispense drops of lubricant at designated points by placing tip of dispensing tube at the appropriate location and gently raising the container.
4.
Apply lubricant liberally at all points, and manually exercise the mechanism during and following lubricant application.
This manual exercising is accomplished by first blocking the Breaker. partially towards the closed position (so that the UTVA reset lever is released).
Exercise the device by manipulating the reset lever.
Lubrication Precautions 1.
The lubrication mixture must be kept thoroughly mixed prior to and throughout the procedure by vigorously shaking the container occasionally.
2, Place a cloth beneath the UVTA while applying lubricant to collect over-shoot and run-off lubricant.
3.
Additional precautions on handling of the lubricant are provided in the Instruction Sheet accompanying the Lubrication Kit.
(See attached procedure on following pages) 4.
Intervals between relubrication of the UVTA should not exceed 200 Breaker operation cycles.
(Breaker open then Breaker closed equals one cycle.)
B.
In cases where a solvent has been used to clean a circu'it breaker so that originally applied lubrication may have been removed or in cases where a
circuit breaker shows signs of sluggishness or friction, lubricant 53701GW latch surfaces.
Upon completion of lubrication, the'.breaker'hould be closed and tripped several times.
CAUTION:
NEVER USE 53701GW LUBRICANT ON CURRENT CARRYING PARTS.
17180:4 39 Rev.
0
H-32.2:27 C.
Lubrication Materials The only UVTA lubricant. approved by Westinghouse i's a composition of a finely ground and purified natural ore of molybdenum disulfide and iso-propyl alcohol.
It is prepared by mixing 5 parts by weight of this lubricating grade molybdenum disulfide with 3 parts by we gi ht of commercial grade iso-propyl alcohol.
This lubricant is identi-fied as Westinghouse Spec
- 53701GW, Rev.
C.
For better flow characteris-tics, the mix ratio has been revised slightly from earlier batches.
Any on-hand supplies of lubricant to an earlier Revision of this Specification may be used providing lubricant application is closely monitored to ascer-W tain that adequate flow is attained.
This lubricant, including handling and dispensing accessories, is commercial ly available thru:
William F.
Nye, Inc.
P.O.
Box G-9Z7, New Bedford, Mass.
OZ74Z; Phone 617-996"6721 Specify Lubrication Kit Westinghouse No.
693C500G04.=
17180 4
'40 Rev.
0
-"f-32. 2: 28 PROCEOURE FOR USING LUBRICATION KIT (693C500G04)
OF HOLYBOENUM OI SULFIDE W 53701GW Contents 1 - Glass Container of Lubricant,
- 53701GW, Rev.
C 1
Glass Container of Solvent, 51100CN 1 - Dispensing
- Assembly, 693C500G03 NOTE:
The solvent and the liquid portion of the lubricant are flammable.
Proper ventilation should be maintained.
Keep away from sparks-, fire or flame.
1.
Thoroughly mix contents in glass container of lubricant by shaking vigorously for two minutes.
2.
Pour lubricant into plastic container and attach the dispensing tube assembly.
Tighten the tube assembly on the container.
Pull gently on tube to make sure it is fully extended.
3.
Oispense drops of lubricant at designated points by placing tip of dispensing tube at appropriate location and raising lubricant container to the vertical position.
Squeeze container gently if necessary.
It may be desirable to try out the dispenser to get a feel for the position required to dispense one drop.
The closer the lubricant container is to a vertical position above the tube tip, the faster the flow.
By lowering the container to the horizontal position the flow of lubricant can be stopped.
4.
While using the lubricant, shake the container about every minute to keep the lubricant from settling out.
17180:4 41 Rav A
y<-Z2.2:29 5.
If the contents have been left standing for longer than 5 minutes, it will require shaking for two minutes.
After using the dispenser for lubrication'and if lubricant is to be stored overnight or longer, the following storage steps should be taken.
a)
Remove dispensing tube assembly from container and poor lubricant into original container and seal with cap.
b)
Wipe excess lubricant from outside surface of dispensing tube with a clean towel or cloth.
c)
Add 1/4 to 1/2 inch of solvent to dispensing container and attach dispensing tube assembly to top of container, then shake.
d) 1nvert container to wash lubricant from dispensing tube.
12 to 15 drops of solvent should clean tube.
The solvent is flammable and should be dispensed into a suitable container used for storage of flammable waste solvents.
Remove dispensing tube assembly, discard excess
- solvent, and store the clean dispensing tube assembly for future use.
e)
Seal solvent container with original cap.
7.
If tip of dispensing tube assembly becomes clogged it can usually be cleaned by inserting a
common pin into the tip opening to clear it.
Repeat Sec.
6(c) and (d).
~C1ean-U Lubricant can be removed from skin areas by using liquid hand cleaner and water.
NOTE: If lubricant does not dispense properly, cleandispenser tube per section 6 and/or section 7.
If lubricant still does not dispense
- properly, examine tube for damage and if damaged, replace dispenser tube
- assembly, 693C500G03.
If the dispenser tube assembly is satisfactory, replace container of lubricant with a new one.
1718D:4 Qau h
M-32.2'30 DATA SHEET REACTOR TRIP BREAKER BYPASS WESTINGHOUSE DB-50 S/N TYPE OF INSPECTION:
ANNUAL SPECIAL 5.5.1 Trip Bar Acceptable Unacceptable 5.5.1.2 Trip bar trip force grams Loaded trip bar UV test Tripped Didn't trip Loaded trip bar shunt trip test Acceptable CORRECTIVE ACTIONS:
Unacceptable 5.6 Cleanliness CORRECTIVE ACTIONS:
Good Fair Poor 5.7.1 Operating Mechanism Unacceptable CORRECTIVE ACTIONS:
Acceptable 5.7.2 Retaining Rings CORRECTIVE ACTIONS:
None missing One or more missing (Identify)
e
M-32.2:31 DATA SHEET Bolts Tight Loose (Identify)
CORRECTIVE ACTIONS:
Pole Bases Good Poor CORRECTIVE ACTIONS:
CORRECTIVE ACTIONS:
No erosion or damage Moderate erosion Heavy erosion and/or damaged plates Arcing and Main Contacts Condition:
Alignment:
Good Fair Unacceptable Acceptable Unacceptable Gap:
Phase A
in.
Phase B
in.
Phase C
in.
CORRECTIVE ACTIONS:
Insulating Links:
Good Fair Poor Wiring:
Good CORRECTIVE ACTIONS:
Fair Poor
M-32.2:32 DATA SHEET Closing Solenoid Bolts:
CORRECTIVE ACTIONS:
Tight Loose Control Relay Contacts:
CORRECTIVE ACTIONS:
Good Fair Poor Undervoltage Trip attachment:
Action:
Acceptable Unacceptable Acceptable after lube Gap:
Bolt:
Acceptable Tight Unacceptable Loose DROPOUT VOLTAGE TEST Reference voltage:
VDC 1st VDC 2nd VDC 3rd VDC Average VDC CORRECTIVE ACTIONS:
Shunt Trip
Attachment:
Core Movement:
Free Binding Trip Free:
Yes No Trip Bar Clearance:
Acceptable Mounting Bolts:
Tight Acceptable Loose Not
M-32.2:33 DATA SHEET SHUNT TRIP VOLTAGE TEST:
Acceptable CORRECTIVE ACTIONS:
Not acceptable 5.7.13 Auxiliary Switches:
Contact Engagement:
Unacceptable Contact Pitting:
Bolts:
Tight CORRECTIVE ACTIONS:
Good Loose Acceptable Fair Poor 5 ' '4 Positioning Lever:
Unacceptable CORRECTIVE ACTIONS:
Acceptable 5.7.15 Cell Interlocks Tests:
Acceptable CORRECTIVE ACTIONS:
Unacceptable 5.8 Breaker Megger Readings:
Breaker Open Phase 1
Phase 2
Phase 2
Phase 3
Phase 2
Gnd Phase 1
Phase 3
Phase 1
Gnd Phase 3
Gnd
M-32.2:34 DATA SHEET Step 5.8 cont.
Breaker Closed Phase 1
Phase 2
Phase 2
Phase 3
Phase 2
Gnd Phase 1 - Phase 3
Phase 1 Gnd Phase 3
Gnd CORRECTIVE ACTIONS:
5.9.1 Trip Bar Acceptable Unacceptable 5.9.1.2 Trip har trip force grams Loaded trip bar UV test Tripped Didn't trip Loaded trip bar shunt trip test Acceptable Unacceptable CORRECTIVE ACTIONS:
- 5. 10 Function Check:
Manual test of UV Attachment UV operation verified 10 times Satisfactory Unsatisfactory
- 5. 11 Switchgear
Enclosure:
Cleanliness:
Disconnect Devices:
Good Fair Good Fair Poor Poor Bolts
& Connections:
Tight Loose Stop Bracket, Support Rails, Interlock Switches:
OK Not OK
M-32.2'35 DATA SHEET Step 5.11 cont.
Megger Test::
Acceptable CORRECTIVE ACTIONS:
Unacceptable COMMENTS:
COMPLETED BY:
DATE COMPLETED:
ELECTRICIAN FOREMAN REVIEW: