ML20212D313
| ML20212D313 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/28/1986 |
| From: | Fosdick M TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML20212C847 | List: |
| References | |
| MP-1411.07, NUDOCS 8703040092 | |
| Download: ML20212D313 (45) | |
Text
-
PROCEDURE DEVELOPMENT ' '
E: ras (1 - 19'w s ' ' 3#
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- a. SECTION 1 - IDENTITY cinae so :.eae % r as cs.o* s: :=As;a so
(~') AP N//.o p o C-Ea m : , 2Ari 2 x2 ;. [s 10-1-86 SAF T RELATED [ NON SAFEry nELATED Precacer _
a A'E2 sca i tb LC C
_. NEW PACCEDUAE CEVELOPVENT [ AEvlSION E CHANGE [ RESTRICTED CHANGE FACM to -
SECTION 2- PURPOSE AND DESCRIPTION 1 eor Domtv D &-0092 res.4 me a,_1 anol . use //c G. nf h,3, He p/d, SOAO & -08/O re' ins %.Il I hw s, e rs
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- s 3 - s >=:csaat as. 5 v. :-As t SECTION 3 - SAFETY REVIEW ALARA REVIEW DETERMINATION
- 1. REPRESENT A CHANGE TO PROCEDURES AS DESCRIBED INYES .
THE USAR7 X NO (50
- 2. REPRESENT A TEST OR EXPERI E 0.59 reviews . YES X NO 3 REPPESENT A CHANGE IN THE Af4 U H505A 0 59 review)
/ Rlw{p$,6($BSQN -J_ YES
( ) 4 REGL:RE A CHANGE TO THE T CHNICAL SPECIFICA LCf S i Oh94elvse,;m,,M i
kh kI K NO jg YES X NO 5 RESULT IN POTENTIAL :NCREASE IN PERSONN LAN , . . .
J (ES X NC 6 REOU:RE VAUDATION?
YES { NO
SUMMARY
JUSTIFICATION IUse reverse side of this formi
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SECTIOk4 - REVIEW
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03EaA'CNS E VAnNTENANCE [ 'EC=NfCAL S.P*C AT i C&aP ~
[ OA ] PLANNING [ PLANT SE AV Ch$ 3 SAS ~
K 2C ] TRAIN!NG [ NUCLEAR ENG NEERiNG
[ NUCLEAR SERVICES C d!
g no.ECT ENG.NEEmiNG f _
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i SECTION 5 - FIN AL APPROVAL DATE
, A55 STANT V ANAC18LGERANT9E..
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SUMMAftY JUSTIRCATION (List USAR sections referenced for Safety Review - Attach additenal pages y as necessar )
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' DIST ISUTION DAVIS TE BESSE NUCLEA'l POWER STATION UNIT 1 Orisend. c MARY MOOlFICATION REQUEST
[/O/[#[ _ Pes. Copy. M new.Smeson w e Aes e Psi.
O SECTION 1 PROCEDURE NUMSER. REVISION NUMBER AND TIT N A l Y//o 0 7 N A sx.s ? A 4 [JJ/A O [ bi#/YCJ 6 of Odef DN, SC 0 O uCDiP CATION TO SUPPORT PCa
'II'9$iU i v 1 Shift Swo.rviese C.'oE7" S &=0 hMOCEDUR AL COMMITMENT 1 Working Copy 1 Control Room .I. Control Moorn Pil.
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1 MPo s,_ O F RE ASON POR CHANGE y 42 y po ry &,
INFORMATION ogg; -
DETAILED CHANGES
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- 2. wmq A y ""r~4 IS PROCEDURE REVISION REQUIRED APPROVEDSY p_f p a_ **"
i49 -u DATE APPROVED SY DATE SUOMITTED SY (Section H e) j '* DATE
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'k RECOMMENDED SY C '
DATE CA APPROVED Sy (Qw.spfy A'-
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1 SECDON 2 SAFETY REVIEW
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Yes C No 7 NSR change in the facility as described in the USAR.
YesC No [ NSA change in the procedures se described in the USAR.
YesC No W NSR test or expenment not descnbod in the USAR.
YesC No [ Change in the Technical Specifications.
NOTE:
ifNo. any of the above Section 2 are "Yes.* a wntten safety evaluation shall be performed per AD i and a Section 3 Safety Evaluation shall be performed, unless this se part of an FCR (FCR No.1845.01 (Safe f applicable).
Yes C No (
Decrease NRC concurror.co. in the effectiveness of the Industrial Secunty Pten. If this is "Yes
- the change c YesC No (
NRC concurrence. (10CFR50.54(q)Oecrease in the effectiveness of the Davis 8 esse Em Yes C No [ Is an ALARA review required:
NOTE:
the C&MP will submet the review to the SR8.If Yes* submit a copy of the modification to the Chemist nor to the review:
SECDON 3 SAFETY EVALUATION Yes C No [
The probability previously evaluated inof theoccurrence Safety Analysis or themay Report consequences be increased. of an accident or malfunction of equipm Yes C No [
A possibility Report may be created. for an accident or malfunction of a different type than any evaluated previously yses in the S Yes C No W
' The margin of safety as defined in the bases for any Techmcal Specification is reduced.
NOTE:
if any of Section concurrence. 3 is "Yes.* an 'Unreviewed Safety Question
- is involved and the change cannot be ma (FCR No. 't applicaole)
SECDON 4 FOR MOOtFICATIONS TO SURVEILLANCE TEMPORARY MODIFICATION MUST BE SUBMITTED TO AD TEST (ST) WHICH AFFECT 1838.00 ANDcOR PP 1102 01. IF APPLICA8LE.
THEA SCOPE O UIREMENTS),
TEMPORARY M00lFICATION SU8MITTED Yes C NA C AD 1838.00 Surveillance and Periodic Test Program (STiTech Spec cross reference)
YesC NA C PP 1102.01 Pre Startup Checklist SECDON 5 FOR NSR MOOiFICATIONS REQUIRING SAFETY EVALUATIONS. AND NSR,NON-NSR CHANGES.
SR8 Comments:
SR8 Recommendation:
I Oate PLANT MANAGER APPROVAL DATE SECDON 6 For ST s ONLY-Review by STE for ST schedule. modo checklist and A01838.00 changes.
REVIEW PERFORMED Yes C NA C COMMENTS l
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-qts ISVTION DAVIS SESSE NUCLEAR POWER STATION UNIT 1 TE Oriesas, ressoamato settfon Mood Acti-
.}ARY MOOf FICATION REQUEST
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SECTION 1 O- PROCaouRa NuwesR. Revision NUMSER AND TITLE AW/'/// . 07 #Mo d L ArAdr/ e t' d sMl70/? O u g t/M vt dA4. S MC 0 y O MODIPICATION TO SUPPORT PCR numeO Ate ruoteueNTATION af "yes" einrlbute copose to: YES bO O MOCEDURAL COMMITMENT i shatt sweervisor i wormine Ceev i Controi Room 9 Control Rocm 59:
1 Operetione ans. .L 77 c s m o e, a & d' RE ASON FOR CHANGE J.
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INFORMATION ONLY wO DETAILED CH ANGES d
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1s PROCsovRe RevislON REQUIRED 1
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Y / i n APPROVSES,l-SUOMITTED BY (Mtion Head)
DATE M 23 m CATE
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SECTION 2 f] SAFE TY REVIEW Yes C No GV NSR change en the facihty as descnbed an the USAR.
Yes C No Y NSR change in the procedures as described in the USAR.
YesC No Y NSR test or empenment not described in the USAR.
Yes C NoF.V Change en the Technical Specifications.
NOTE:
ifNo.
any of the above Section 2 are "Yes.* a wntten safety evaluation shast be performed per AD 1845.01 ISafety Evaluation 1 and a Section 3 Safety Evaluation shall be performed, unless this is part of o.
an FCR (FCR N af apphcable).
Yes C No [
Oecrease NRC in the concurrence. effectiveness of the Industnel Secunty Plan. If this is "Yes.* the change cann YesC No [
NRC concurrence. (10CFR50.54fq)Oecreces in the effectiveness of the Davis 8 esse Emerg YesC No F is an ALARA review required:
NOTE:
the C&HP will submit the review to the SR8.If 'Yes* submit a copy of the modification to ethe Chemist & He review: ;
SECTION 3 SAFETY EVALUATION Yes C No Y The probability of occurrence or the consequences of an accident or malfunction of equipmen previously evaluated in the Safety Analysis Report may be increased.
Yes C No &*
A possibility Report for en accident or malfunction of a different type then any evaluated previously in the S may be created.
YesC No /
The margin of safety as defined in the bases for any Technical Specification is reduced.
l g NOTE.
g V
j If any of Section concurrence. 3 is *Yes,* an 'Unreviewed Safety Question
- is involved and the change cannot be made withou (FCR No. if apphcable)
SECTION 4 '
{
FOR TEMPORARYMODIFICATIONSM00lFICATION TOMUSTSURVEfLLANCE 8E SUBMITTED TESTiST)
TO AD1838.00 WHICH AFFECT AN0/OR THE SCOPE PP 1102.01. ,
IF APPLICABOF l
TEMPORARY M00lFICATION SU8MITTED Yes C NA C AD 1838.00 Surveellance and Penodic Test Program IST/ Tech Spec cross referencel Yes C NA C PP 1102.01 Pro.Startup Checkhst SECTION 5 FOR NSR MOOlFtCATIONS REQUIRING SAFETY EVALUATIONS, AND NSR NON.NSR CHANGES.
SR8 Comments:
SR8 Recommendation:
Date PLANT MANAGER APPROVAL DATE g.* ,
SECTION 6 For ST's ONLY:
Review by STE for ST schedule. mode eneckhst and A01838 00 changes.
REVIEW PERFORMED YesC COMMENTS NAC v
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r' MP 1411.07.0 6.1.8 Turn the set rod clockwise FORCE! until it stops.
(Refer to Figure 4). D0 NE NOTE 1:
Review and/or refer to the reference as listed is to beinmade.
2.2 for this unit whenever disassembly Be certain to keep all parts clean made. and free from dirt when disassembly is NOTE 2:
If Limitorque valve operator is installed with a NDT gear box, perform Step 6.2.
Begin at Procedure Step 6.3 or 6.4 if no NDT gear bor is installed, or if the operator is attached to a non-rising stes valve, or a rising scale valve where the valve yoke bushing causes the stem to rise instead of a
' threaded stas unit in the operator. In this case, remove any locking devices on the end of the stem.
These locking devices (usually .
a nut.
nut and washer), lock the stem to the sten Perform Steps 6.4.11 through 6.4.13 to remove this operator from its valve.
NOTE 3:
Steps 6.2, 6.3 or 6.4 (operator removal) need not be performed if valve operator is to be worked in place. If the operator is
/ to be worked in place, remove the stem nut, Steps Step 6.6. 6.4.1 through 6.4.10, then proceed to O- f6.2 Limitorque valve operator --- 'Av' l NDT Gear Box 4E M L -
CAUTION 1:
Do not use Limitorque valve operator handwheel as a lifting point.
CAUTION 2: .
Prior to proceeding,' ensure that the valve is not hard seated, either open or shut. Coordinate with operations and engage the manual handwheel and operate valve position. the valve several turns opposite of 6.2.1 Attach take uplifting slack.device to Limitorque valve operator and
[ 6.2.2 Remove bolts holding eposeeee a gear box 6 FA4-4 #44afE 6.2.3 u. art uor
/ Carefully pull operator _ _, tx gear box and off of 4muc ;1' :f shaft.cf """ ;n-- 5 r.
6.2.4 wa wafG W d**
Transport valve operatorAto designated work area.
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//W W MP 1411.07.0 NOTE:
dure Step 6.3 removes from t ve flan e e operator (3 stem nut from t out removing the V Step 6.4 r tor. Procedure opera ves the stem
- from the prior to removing the o tor from y be valve used. flange. Either Step 6.3 or 4 i 6.3 Limitorque nut installed.valve operator removal froe valve flange with stem 6.3.1 Reso've valve flange operator. bolts holding valve sounting flange to 6.3.2 Attach suitable rigging or lifting device to valve operator and take up slack in rigging.
6.3.3 Depress declutch lever and place operator in manual .
6.3.4 Slowly tension withrotate rigging handwheel equipment. in closed direction maintaining 6.3.5 Continue rotating handwheel ,in closed direction while liftingstem.
valve the operator until it is clear of threaded 6.3.6 Transport valve operator to designated work area.
' 6.4 .
Limitorque g nut removed. valve operator removal from valve flange with stes 6.4.1 Unscrew the stes protector pipe or cap from the handwheel assembly (if installed). .
NOTE:
If the threads above the lock nut have been staked, follow Steps 6.4.2 through 6.4.4.
If they have not been staked, go to Step 6.4.5.
6.4.2 Stuff a rag or paper towel into the lock nut opening.
6.! .3 Drill out the staked threads above the lock nut.
6.4.4 Clean out the metal particles.
6.4.5 Usenut.
lock the lock nut removal tool to loosen and remove the 6.4.6 Push the the declut:h "CLOSE" direction. level down and turn the handwheel in
i ,'wn/t u;
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6.7.6 NDT Gaer Box dises:Orbly/ reassembly 1.) Match mark NDT Gear Box and limitorque actuator. Remove
(} bolts holding NDT Gear Box to actuator and carefully pull NDT Gear Box away from actuator.
NOTE:
Parc numbers "xx" refer to part numbers in Limitorque drawing 01-438-0002-3-B is attached.
2.) Loosen jam nuts 23 or remove set screws 23.
3.) Mark or measure in same position. adjustable stops 10 to allow reinstallation 4.) Remove adjustable stops 10.
S.) Remove pointer rod 14 by unthreading from drive sleeve 2.
6.) Remove retaining ring 19.
7.) Remove drive sleeve assembly 2.
retainer 5, 0-rings 20, 21 and 22.This will remove 0-ring Thrust washer 8 will also be removed with the drive sleeve assembly.
NOTE:
The input shaft assembly consisting of parts 7, 15, 16, 6, 3, 17 and 4 may come out of the housing with
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(_ ,/
the drive sleeve assembly. Handle with care since these two assemblies may separate during handling.
8.) If the input shaft assembly did not come out with the drive sleeve assembly, remove it by tapping on the end of the input shaft.
9.) Clean and inspect all parts and the internal housing.
10.) Disassembly of the input shaft assembly is not recommended unless required to replace assembly parts.
11.) If necessary to disassemble the input shaft assembly, remove l bearing 16 and associated bearing spacer 6 by using a bearing remover between the bearing spacer and eccentric. Now all other pieces can be removed. Reassemble all pieces on the input shaft 7 and press bearing 16 onto shaft.
12.) Hand pack bearings 15 and 16 with Exxon Nebula EP-1 grease and reinstall the input shaft assembly.
13.) Reinstall the drive sleeve 2 with a new 0-ring 22, ir re-quired.
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, Reinstall thrust washer 8. new 0-ring 20, if required, and 0-ring retainer with new 0-ring 21, if required.
15.) Reinstall retaining ring 19.
16.) Reinstall pointer rod 14, 17.)
Reinstall adjustable stops 10 in original position.
18.) Tighten jam nuts 23 or reinstall set screws 23.
19.) Align NDT Cear Box and limitorque actuator.
Match marks.
carefully slide NDT Gear Box into place against actuator.
Install bolts holding NDT Gear Box to actuator and tighten.
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- 6. Tighten set screw.
ws/4 I 6.10 Limitorque Valve Operator Installation ee NDT
/ 6.10.1 Using suitable ra-i-ic: lifting device, position operator ie w'TA
- ;. a NDT gear box.vc4 7 r, vu ,c * *- d at ^~ N f
/ 6.10.2 Carefully line up a r eas st 4a r ma rA vn a 5 74*'
gearboxandslidea)p,aearae- ' g3 ; :r: -f ia-- in
- 11-5
-bee- flange. Nto place assinst seas- ws.a M -
l 6.10.3 ,ga m sau re on es m-en,, pu.,rc Install bolts holding opeeeter *- h:m' ;; and tighten 6.10.4 .
Reinstall installed. any stem nut locking devices, if previously 6.10.5 With operator in manual, rotate handwheel in each direction to ensure no binding of operator or stem .
6.10.6 Install protective cap or pipe.
6.11Installed I.iaitorque Valve Operator Installation on Valveemwith Nut St 6.11.1 Using suitable position lifting over valve device, position operator in stem.
6.11.2 With valve operator in manual, carefully engage stes '
nut with valve stem threads.
6.11.3 Using care rotate valve operator handwheel in the "Open" direction sounting flange. while lowering operator onto the -
6.11.4 flange to valve operator. Install and tighten flange bolts CAUTION:
While performing this step, ensure valve disc is not jammed into the valve seat.
6.11.5
. With operator in manual, rotate handwheel in each direction to ensure no binding or actuator stem.
6.11.6 Install cap or protection pipe.
6.12Removed Limitorque Valve Operator Installation on Valve with Sten Nut NOTE:
Be sure that operator to be installed is the original operator for the valve, or an acceptance replacement.
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Ma% - 4 Aspair of Limitorque Valve Operator T s ype SC-04 \
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- 1. PURPOSE 1.1 This procedure provides instruction for matatenance to be performed on Limitorque operator model SMC-04.
1.2 This procedure has been divided into phases. This will allow the flexibility to choose the maintenance required.
1.3 Procedural Phases:
6.1 Disconnect elec.trical power leads.
6.2 6.3 Limitorque valve operator removal from NDT gear box.
Limitorque valve operator removal from valve flange with
- stem aut installed.
. 6.4 Limitorque valve operator removal' free valve flange with stem nut removed.
6.5 Limitorque valve operator removal free valve flange when operator cannot be placed is ananal.
6.6 Li.aitorque valve operator disassembly.
6.7 Cleanias, inspection, and repair.
6.8 Limitorque valve operator reassembly.
6.9 Limitorque reassembly).valve operator subassemblies (disassembly and 6.10 Limitorque valve operator installation on NDT gear box.
6.11 Limitorque valve operator installation on valve with stas nut is. stalled.
6.12 Limitorque valve operator installation on valve with stas out removed.
6.13 Lubrication.
6.14 Limit switch adjustaent.
6.15 Setting torque switch.
6.16 Energization and check out of Limitorque operators following maintenance, repair, or new installation.
6.17 Inspection and testing.
1.4 Not all portions of this procedure will be applicable for every
(
maintenance condition. Enter the symbol "NA" in the applicable blanks'6a the data and sigaoff sheet as required. This is also l
i appropriate when only portions of this procedure are being conducted.
- 2. REFERINCES 2.1 Maintenance Procedure; Testing of Motor Operated Valves using M09AT5, MP 1410.32.
2.2 Limitorque Corporation Limitorque, Bulletia SNCl-04/03-83, Type SNC-04 and SNC-03 Instruction and Maintenance Manual 2.$ Fc.A 8G/0092 14 l
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- 3. l SPECIAL EQUIP.ENT REQUIRED O MP 1410.33 Gasket material, Anchorite r/425segger testing of electrical equipment 3/8" bolt 2 1/2" - 3" long U nut Grease, Exxon Nebula EP-1 Lubricant, Mokykote "G",
Ammeter, clamp on Neolube or equivalent Voltage tester Wrench, locknut Retaining Dead Ring Man Switch (snap ring) pliers (inside & outside) 4.
PRECAUTIONS AND LIMITATIONS 4.1 Safety Tagging Procedure, AD followed throughout this procedure. 1803.00, will be in effect and 4.2 TED Safety Procedures will be in effect and followed throughout this procedure.
4.3 Jumper and Lifted Wire Control Procedure AD be in effect and followed through out th,is procedure.1823.00, will 4.4 Torque and limit switches have different colors.
j application in use depends on the color. They areThe as follows:
Wite: Nuclear Safety Related
\ or Brown: For use Inside and Outside Containment For Use on All Class 1E Equipment Red: .
Nuclear Safety Related .
or Black:
t NOT for Containment Use 4.5 All leads will be bundled before closing limit switch cover to prevent crushing or broken leads.
4.6 Observe ALARA. proper radiation practices to limit personnel exposure, 4.7 The following actions can damage the operator.
Lifting the operator by the handwheel, Forcing the operator by the handwheel, Forcing the declutch lever, Using a cheater (nechanical leverage) on handwheel, Lifting the operator by or laying the operators weight on the declutch lever.
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MP 1a11.37.0 j 4.3
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q' Soes operators are bulky and heavy.
AD 1844.06
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when handitas and rigatag heavy loadsObserve requtremects 4.9 The I,iettorque operator has more than one ower.source of p 4.10 ductag De notmotor stop operation.
valve stes travel by depressin g declutch lever 4.11 Do not jos estor in an effort to obtain a ti h g ter seated valve.
4.12 De not reset torque switch setting higher tha is recommeaded by the valve annufacturer, approval. a the eastaus withoutthat anstaaer tas 4.13 Do not attempt to set limit switches without fi controlisand caution used.power circutta unless insulated tools and extreme 4.14water Protect or steam.inside of limit switch compartment fre e exposure to 4.15.If you must "estor operate" valve without setting first limit switch, a " dead saa" switch and extreme caustos aust be used .
4.16 lagineering evaluation is required prior toorming perf the torque switch adjustaaet if the torgue switch settsags are not stamped inside the limit switch compastaent.
4.17 The limit switch will not deemergize the estor i
" closed" directiaa on torquad cl s the valve if torque switch failure occurs.osed valves. Deenergsze motor 4.18 Do not bypass or reader inoperative any of the or equipeast protection devices. personnel safety 4.19produce Incompatible toxic gases. grosses say cause grosses toliquify ,
solidify or cedure are to be used.Caly the greases specified in this pro-4.20 Ensure gaskets are intact, pluga installed, and conduit fittings reassembled.all cover bolts insta 4.21espesure If aster housing to water orisstaan.
removed protect motor compartment rom f
4.22 housing.
Use caution when tightaming dows all bolts dueuminua to al 4.23 Any parts being temporarily stored to the shop awhile ng aw iti repairs will be tagged per AD 1347.00.
- 4. 2'/ E. n r.o r e oll s.u ep a re s o.nol h.angv.rs cd icco o n ce.;te A duria s O_} asy i o s a c c.t o.-
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,9 gett,07,0
- 5. PRIREQUISITES O 5.1 The equipment prior to working on or Limitorque device hasunit.
been isolated and/or deenergized 5.2 Safety Red Tags have been issued and hung.
5.3 A Maintenance Work Order has been issued for repairs .
5.4 A REP has been issued, if required.
5.5 have been issued and are ready to be attached. Tags for 5.6 Record work. general information on the data package prior to starting 5.7 Match mark operator to valve to ensure proper installation.
- 6. PROCEDURE 6.1 Disconnect electrical power leads.
6.1.1 ShutTags.
Red off all power to Limitorque unit, and hang Safety 6.1.2 Disconnect computer points and hang tags, if applicable.
6.1.3 Remove the limit switch housing.
6.1.4 Disconnect the leads to the terminal block.
6.1.5 ,
Disconnect switch. the actor leads connected to the limit 6.1.6 Pull electrical cable from limit switch compartment and attach jumper and lifted wire tags. Make sure leads are properly marked for reconnecting to the terminals.
NOTE:
These steps are required to provide a reference point to allow setting limit switches ustag information provided by the MOVATS Test Procedure, Ref. 2.1.
6.1.7 Coordinate with operations, and by engaging the manual handwheel, position the valve to either the full open or full closed position. Record the valve position on the data sheet under limit switch data.
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MP 1411.07.0 6.1.8 Turn the set rod clockwise FORCE! until it stops. DO NOT (Refer to Figure 4).
NOTE 1:
Review and/or refer to the reference as listed is to beinmade. 2.2 for this unit whenever disassembly Be certain to keep all parts clean made. and free from dirt when disassembly is NOTI 2:
If Limitorque valve operator is installed with a NDT gear box, perform Step 6.2.
i Begin at Procedure Step 6.3 or 6.4 if no NDT gear box is installed, or if the operator is attached to a non-rising stem valve, or a rising staa valve where the valve yoke bushing causes the stem to rise instead of a threaded staa unit in the operator. In this case, remove any locking devices on the end of the stem. These locking devices (usually a nut and washer), lock the stas to the stem nut.
Perform Steps 6.4.11 through 6.4.13 to remove this operator from its valve.
NOTE 3:
Steps 6.2, 6.3 or 6.4 (operator removal) need not be performed if valve operator is to be worked in place. If the operator is to be worked in place, remove the stem nut, Steps Step 6.6.6.4.1 through 6.4.10, then proceed to 6.2 Limitorque valve operator removal from NDT Gear Box.
CAUTION 1: .
Do not use Limitorque valve operator handwheel as a lifting point.
CAITIION 2:
Prior to proceeding, ensure that the valve is not hard seated, either open or shut. Coordinate with operations and engage the manual handwheel and operate valve position. the valve several turns opposite of 6.2.1 Attach take uplifting slack.device to Limitorque valve operator and 4
6.2.2 Remove bolts holding operator to gear box.
6.2.3 Carefully pull operator away from gear box and off of splined shaft of NDT gear box.
6.2.4 Transport valve operator to designated work area.
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.MP 1411.07.0 NOTE:
Procedure Step 6.3 removes the valve operator Og from the valve flange without removing the stem nut from the operator. Procedure Step 6.4 removes the stem nur from the operator petor to removing the operator from the valve flange. Either Step 6.3 or 6.4 may be used.
6.3 Limitorque nut installed.valve operator removal from valve flange with stem 6.3.1 Remove valve flange bolta holding valve sounting flange to operator.
6.3.2 Attach suitable rigging or lifting device to valve operator and take up slack in rigging.
6.3.3 Depress declutch livir and place operator in manual.
6.3.4 Slowly tension rotate handwheel with rigging in closed direction maintaining equipment.
6.3.5 Continue rotating handwheel in closed direction while liftingstem.
valve the operator until it is clear of threaded 6.3.6 Transport valve operator to designated work area.
6.4 O Limitorque nut removed.valve operator removal from valve flange with stem 6.4.1 Unscrew the stes protector pipe or cap from the '
handwheel assembly (if installed).
NOTE:
If the threads above the lock nut have been staked, follow Steps 6.4.2 through 6.4.4.
If they have not been staked, go to Step 6.4.5.
6.4.2 Stuff a rag or paper towel into the lock nut opening.
6.4.3 Drill out the staked threads above the lock nut.
6.4.4 Clean out the metal particles.
6.4.5 Use the lock nut removal tool to loosen and remove the lock nut.
6.4.6 Push th6 the declutch "CLOSE" level down and turn the handwheel in direction.
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. .4P 1411.07.0 6.4.7 Observe that the stes nut as the handwheel is turned.is rising out of the housing O 6.4.8 Stop turning rises. the handwheel when the stes nut no longer 6.4.9 Use a scribe the stem nut. or pin to unscrew the remaining length of 6.4.10 Remove the stem nut.
6.4.11 Remove flange operator. bolts holding sounting flange to valve 6.4.12 Attach suitable rigging or lifting device to valve operator and take up slack in rigging.
6.4.13 Carefully lift designated operator work area. free of valve and transport to 6.5 Limitorque cannot be placedvalvein operator manual. removal from valve flange when operator NOTE:
This style operator cannot be disassembled without 4
being operated in hand unless it is already removed from its valve.
Removal from its valve may require spinning the entire operator up the stem or repairing (if possible) the fault with hand operation.
, 6.6 Limitorque Valve Operator Disassembly 6.6.1 Preliminary Activities 1.
Remove limit switch housing.
- 2. Remove torque switch housing.
- 3. Remove leads from torque switch.
4.
Carefully pull leads back through housing.
5.
Remove screws and carefully remove limit switch from operr.cor.
- 6. Remove torque switch from operator.
NOTE:
Torque switch has only 1 screw and say
, required a flex shaft or right angle screwdriver.
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8 MP 1411.07.0 7.
(' Remove capscrews and motor housing from operatoe.
N NOTE:
There are loose thrust washers in bearing race of actor housing. Be careful of number and arrangement.
8.
Carefully remove rotor assembly.
CAUTION:
Do not attempt to remove stator from operator housing. If there appears to be any defects with the stator, contact Limitorque.
9.
Renova bolts from housing cover.
10.
Remove housing cover, handwheel and gaskets.
NOTE:
Gaskets could be a set of metal shins whose thickness defines the preload on the drive sleeve assembly. Ensure gasket set remains intact.
6.6.2 Declutch Shaft Assembly Renoval (Figure 1).
NOTE: '
Unless desired it is not necessary to initially remove the declutch level separ-ately.
1.
Remove bolts free declutch shaft cap.
2.
Remove entire declutch shaft assembly, with cap, lever, latch pinion, latch, spacer and flange bearing.
6.6.3 Spring (FigurePack 2). / Worm Shaft / Drive Sleeve Assembly Renoval 1.
Using a drift pin, with access through the motor l
t stator, lightly tap on the end of the vora shaft.
NOTE:
The spring pack end should protrude approx. 1 inch from the housing which means the shaft bearing is touching the worn gear on the drive sleeve.
2.
Lightly tap on the bottoa and of the drive sleeve until upper bearing race is free.
NOTE:
The bearing race is spring loaded.
3.
Lift drive sleeve assembly from housing.
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9
.4P 1411.07.0 0 4.
Carefully houstag. pull worn shaft and spring pack from the assembly. Quad ring and spacer should come wtta 6.7 Cleaning, Inspection and Repair CAUTION:
Use only approved solveat for cleasing of parts 6.7.1 .
Closa all mechanical parts removed from the operator 6.7.2 C'
Inspect ANI IA ft,ball tkoi parts for damage or excessive weared rett va 6.7.3 C.A M M o D b4. ee Pc.df ecl .
Small alcks or burrs om drive shaft and gears can be smeethod out with a hostag stone or a fine file.
6.7.4 Carefully inspect all bearing assemblies for any defects in inser or outer races or the rollers.
Replace or binding. any bearing assemblies showing escassive wear 6.7.5 Limit switch disassembly /cleasing, and reassembly.
CAUTION:
Note the positions of the contacts on the rotors and reeerd. It is possible to reconfigure the rotar contacts when disasses-1 bly/ assembly occurs and the original configur-ation east be known before disassembly.
1.
Remove the posittoa indicator, if installed.
2.
Remove the screws and lockwashers which hold the
{ terniaal strip assembly. to the front of the limit switch 3.
Reeste the terniaal strip and terminal strip backing plate, if installed.
4 Remove plate to thethe flathead screw which holds the front assembly.
5.
Remove the front plate, be very careful. Do not lose the rotor spacers or wipers.
6.
Remove the screws holding the contact and terstmal block assembly to the housing.
7.
Remove the contact and terniaal block assembly from the boueing. Care must be esercised. The rotor segasats are set being retained and can be
. kaocked off by the contacts.
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10 MP 1411.07.0 8.
Remove the rotor segments, noting their orienta-tton for proper reinstallation.
9.
Remove together. the screws holding the gear frame assembly 10.
Separate the gear frame assembly. Note the orientation of the gears which drive the assembly.
11.
The limit switch can now be cleaned.
12.
Using a brush and solvent, from the components and housing. clean the old lubricant 13.
Relubricate using only Exxon Beacon 325 lubricant.
No substitute is recommended. Do not pack housing. The housing is open. Brush grease on all components in housing.
are lubricated properly. Be certain all shafts 14.
Position components properly in case and reassemble the gear frame assembly.
15.
Replace the screws which hold the gear frame assembly together.
16.
Turn set rod counterclockwise until it stops, O 17.
rotate the drive pinion by hand and assure correct operation.
Turn set rod clockwise until it reaches a stop. .
18.
Replace the rotor segments, assure proper line-up.
19.
Replace the contact and termital block assembly.
20.
Replace the mounting screws for the coatact and terminal block assembly.
21.
Replace are the front plate, assure the rotor spacers installed.
22.
Replace the sounting screw for the front plate.
CAUTION: DO NOT overtighten. This will cause the plate to crack.
23.
Replace the terminal strip and backing plate, if ins talled.
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r 11 MP 1411.07.0 24.
Replace the ter:ntnal strip mounting screws.
25.
% Replace the posttion indicator, if installed.
6.8 Limitorque Valve Operator Reassembly NOTE 1:
Prior to reassembly verify that data package has been completed.
NOTE 2:
During shafts and reassembly gears. grease individually all bearings, 6.8.1 Spring pack /Wors Shaft and Drive Sleeve Installation 1.
Insert spring pack / worm shaft assembly into housing including quad ring and spacer until the shaft pinion is inside the shaft bearing race.
NOTE:
Spring pack should protrude approx. 1 inch from housing.
2.
Push spring pack / worm shaft completely in housing until shaft bearing is fully seated in housing race.
3.
Install drive sleeve assembly engaging the worm gear with the worn shaft gear.
4.
Install upper bearing race for drive sleeve assembly.
NOTE:
May be necessary to lightly tap in place. -
6.8.2 Declutch Shaft Assembly Installation 1.
Insert the shaft assembly in the housing with the declutch lever in the vertical posteten.
2.
The shaft cap should be flush with the housing then install bolts and tighten in a crisseross pattern.
i 3.
Rotate the direction declutch (arrow pointindown).
the counterclockwise NOTE:
This should engage the shaft latch with the eccentric ring on the drive sleeve assembly. The lever should remain at approx. 45' free vertical.
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. 12 MP 1411.07.0 4.
Insert the actor rotor through the actor stator p until the ptaton gear engages with the worm shaf t Q gear.
NOTE:
To ensure proper assembly rotate the actor rotor clockwise until the declutch lever returns to the vertical position.
6.8.3 Motor Housing Installation CAlTIION:
Inspect motor compartment to ensure there is no soisture, grease or foreign objects.
NOTE:
Check thrust washers for number and arrange-ment as removed in Step 6.6.1 (8).
1.
Slide actor housing over actor stator and rotor.
2.
Motor housing.
housing should be flush with operator
- 3. Install cap screws.
6.8.4 Limit Switch and Torque Switch Installation 1.
Install torque switch and replace screw.
2.
Carefully screws. install limit switch and replace cap 3.
Route limit switch leads through housing and connect to torque switch. '
- 4. Install torque switch housing.
5.
Connect actor leads to limit switch.
l
- 6. Install limit switch housing.
6.8.5 Housing Cover and Handwheel Ics :allation i
1.
i Replace housing cover, with handwheel and gaskets.
NOTE:
l If old gaskets are not serviceable.
i replace it with a new gasket (s) of the same thickness,
- 2. Tighten bolts in a crisscross pattern.
6.9 Limitorque Valve Operator Subessemblies (Disassembly and Reassembly)
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13 MP 1411.07.0 6.9.1
(
t Drive Sleeve Disassembly (Figure 3).
CAUTION:
Do not apply force to the bearing cage when removing.
1.
Remove the upper bearing.
2.
Remove and springthe upper bevel gear, compression spring cap.
- 3. Resove the lower bearing.
4.
Remove the worm gear, eccentric ring and clutch sleeve.
5.
Inspect all parts for nicks or burrs. If any part shows excessive wear, it should be replaced.
NOTE:
To further disassemble remove the set
! screws in the eccentric r_ng to release the thrust washers and bearing.
6.9.2 Drive Sleeve Reassembly 1.
Clean bearings and gears with solvent and dry.
2.
Slide the clutch sleeve, eccentric ring and worm
() 3.
gear on drive shaft.
Coat the bearing.
lower end of shaft with grease and press on lower
- 4. .
Install the spring cap and compression spring over the clutch sleeve.
5.
Install the upper bevel gear and upper bearing.
6.
Pack upper and lower bearings with grease.
6.9.3 Spring Pack / Worm Shaft Disassembly (Figure 2).
1.
Remove the retaining ring from inside the bearing cartridge.
2.
Remove the worn shaft frca the spring pack by pulling.
3.
To further disassemble the worm shaft remove the lock nut and slide the spur gear, spacers, worn and ball bearings off the shaft.
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14 MP 1411.07.0 NOTE:
/' Each gear is keyed with the shaft.
\ 4.
To further disassemble the spring pack first match stem. mark the lock nut to the bearing cartridge 5.
Measure the distance from the face of the first thrust washer to the end of the bearing cartridge .
6.
Remove the lock nut counting the number of turns and record on data sheet.
CAUTION:
You may have to clamp on the hearing cartrid damage.ge gears. Be careful not to 7.
Remove sleeves. the thrust washers, spring pack and CAUTION:
Be sare to keep the parts in the exact order they came off the bearing stes.
Store them on a long bolt and nut to maintain this order.
6.9.4 .
Spring Pack / Worm Shaft Reassembly 1.
Reassemble how theremoved.
the parts were worn shaft in reverse order feca
) 2.
Reassemble the spring pack parts back on the bearing cartridge stem.
NOTE:
The thrust washers and spring pack must go back in the same arrangement as they came off.
3.
Install the lock nut and start counting the turns as soon as first thread engages.
NOTE:
Match marks on locknut and bearing cartridge stem should align.
4.
Measure the distance from the face of the first thrust washer and end of bearing cartridge.
Should be the same as that in Step 6.9.3 (5).
5.
Pack the worn shaft bearing with grease.
6.
Press the worn shaft bearing into the bearing cartridge housing.
15 MP 1611.07.0 7.
Replace inside retaining ring.
[}
t, / 6.9.5 Declutch Shaft Disassembly (Figure 1) 1.
Remove cet screw in the declutch lever.
2.
Remove the declutch lever and key.
3.
Slide the declutch shaft cap off the shaf t.
Bearing cap. and quad etag should come off wtta the 4
Slide the spacer off the shaft.
5.
Slide the latch pinion assembly off the shaf t.
NOTE:
Rossining is short spacer with roll pin which does have to be removed unless damaged.
6.
To further disassemble the latch pinion assembly remove the cotter pin free the end of the clevis pin.
- 7. '
Remove torsion spring, sandrel, latch pinion and latch.
6.9.6 Declutch Shaft Reassembly
()
1.
Reassemble the latch pinion assembly in reverse i order.
- 2. Slide latch pinion on shaft.
NOTE 1: When putting the latch pinion on the shaft, ensure the spring is pointing toward declutch lever.
NOTE 2: When installing the latch pinion assembly rotate the tang on the torston spring approx. 90* counterclockwise to put it in compression.
- 3. Slide the long spacer on shaft and under torston spring tang.
4 Slide the declutch shaft cap, with bushing and quad ring, on the shaft.
- 5. Install declutch lever and key.
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. MP 1/.11.07.0
- 6. Tighten set screw.
6.10 '.iaitorque Valve Operator Installation on NDT Gear Box 6.10.1 U.ing suitable lifting device, position operator in posttton next to NDT gear box.
6.10.2 Carefully line up splines in operator with splines in box flange. gear box and slide ope ator into place against gear 6.10.3 Install bolts holding operator to housing and tighten.
A.10.4 Reinstall installed. any stes nut loching devices, if previously 6.10.5 With operator in manual, rotate handwheel in each direction to ensure no binding of operator or stem.
6.10.6 Install protective cap or pipe.
6.11 Installed Limitorque Valve Operator Installation on Valve with Stes Nut 6.11.1 Using suitable lifting device, position operator in position over valve stem.
6.11.2 With valve operator in manual, carefully engage stem O nut with valve stem threads.
,Q 6.11.3 Using care rotate valve operator handwheel in the "Open" direction while lowering operator onto the mounting flange. ,
6.11.4 Install and flange tighten to valve flange bolts holding valve mounting operator.
CAUTION:
While performing this step, ensure valve disc is not Jamed into the valve seat.
6.11.5 With operator in manual, rotate handwheel in each direction to ensure no binding or actuator stem.
6.11.6 Install cap or protection pipe.
6.12 Removed I.iaitorque Valve Operator Installation on Valve with Stes Nut NOTE:
Be sure that operator to be installed is the original operator for the valve, or an acceptance replacement.
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17 MP 1'.11.0*.0 6.12.1 Lubricate lubricant.valve stem and stem nut with approved j
V 6.12.2 Carefully lower valve Install attaching operator onto valve body flange.
bolts.
6.12.3 Insert stes nut into operator; then screw stem nut valve stem as far as it will go. Align stem cut andin drive sleeve splines.
6.12.4 Push declutch direction lever down until it cannot andany be turned turnfurther.
handwheel to "0 PEN" (This action causes seem nut to fully retract into operator.)
6.12.5 Using special wrench or driftpin, screw locking cut into operator until snug.
6.12.6 Using just punch, above state nut.
locking threads at two places (180* apart) 6.12.7 With operator in manual, rotate handwheel in each direction to ensure no binding or actuator or stem.
6.12.8 Install cap or protective pipe.
6.13 Lubrication 6.13.1 The main gear box and the geared limit switch shall be lubricated in accordance with the Lubricatton Manual.
6.13.2 Limitorque for life.
valve operator motors are factory lubricated 6.13.3 The following should be noted when inspecting the gear box and geared limit switch lubrication:
- 1. Limit Switch:
a.
Exxon Beacon 325 grease is light gray in entor.
- 2. Gear Box:
a.
Exxon - Nebula EP-1 is dark can in color and used for nuclear containment uutts.
All of the above greases should be smooth and creasy, free of lumps or foretan satter.
- 3. Lubricate requirements for gear box:
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18 MP 1411.07.0 gNg Amount of Lubricant Approx. Volume V Unit Size _
Gallons Approx. Weight
_ Pounds SMC-04 .15 1.0 6.13.4 lubricants shall NOT be mixed.In the event that lu CAUTION:
Ensure grease plugs used are on gear box and are not conduit plugs.
6.13.5 Unserew two grease plugs located on top and side of housing.
NOTE:
Do not remove plugs froe limit switch housing or actor housing.
6.13.6 Using grease gun, inject clean fresh grease into lower l pipe plugopening.
pipe plug opening until grease reaches level of upper 6.11.7 Inject grease into grease (zerk) fitting on housing cover.
6.13.8 Reinstall grease plugs.
6.14 Limit Switch Adjustment (Tigure 4)
() LLait turns the switches are driven directly by the same drive train that valve stem.
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number of turns of the gear train.They can be set to operate at any specific These switches are normally set to operate at the end of travel of the valve stems, thereby identifying the "0 PEN" and " CLOSED" valve positions.
NOTE 1:
Determine the type of valve the Limitorque actuator is operating and note whether it is a gate, globe ball, butterfly plus, diaphragm, or other.
NOTE 2:
There switch. are four adjustable rotors used with this limit The procedures below are for setting the close and open rotors which have the motor contacts and torque switch by pass contacts on them. The Int.
I and Int. 2 rotors with the indicating lights on (Int. will them be set at the same position as the close
- 2) and open (Inc. 1) rotors.
6.14.1 Setting the "0 PEN" Limit Switch NOTI:
Ensure all electric power is turned off to prevent the electric motor drive from O
1
19 MP 1411.07.0 turning on during switch adjustment. This eliminates the potential injury to servicing personnel or damage to the valve.
1.
Using the manual handwheel position the valve to the position switch data. listed on the data sheet for limit Then turn the switch counterclockwise untilset rod on the limit it stops. DO NOT FORCE!
2.
Using the manual handwheel, close then fully open the valve noting below the direction of rotation of the intermittent gear shafts during the open cycle.
Count the number of handwheel turns from full closed to full open and enter on data sheet.
Direction of Rotation During Open Cycle of Valve.
Clockwise Counterclockwise 3.
After fully opening the valve you must then close i
it slightly to allow for backlash and coast down.
Rotate the handwheel in the closed direc-tion until the valve stem starts to move. Now rotate the handwheel in the closed direction an additional 5% of full stroke handwheel turns (i.e., if full stroke is 100 turns, rotate the handwheel 5 turns in the closed direction beyond the point where stem action starts).
NOTE:
If difficulty is encountered determining the point of stes action, match marks or a temporary pointer affixed to the
- stem or yoke may be used.
4.
Turn the set rod clockwise until it stops. DO NOT TORCE!
5.
By observing the inner rotor contacts (the ones next to the gear box), note if these contacts are closed or open.
I 6.
If the contacts are closed, turn the intermittent gear shaft in the direction noted in Step 6.14.1.2 until the rotor contacts open.
7.
If the contacts are open, turn the intermittent gear shaft in the direction oppostte that noted in Step 6.14.1.2 until the rotor contacts close.
Now reverse direction on the intermittent gear shaft and turn until the rotor contacts open.
i 4
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.9 1411.07.0
- 8. The Int.
Section 6.14.1 Steps 6 and 7 for Inc. I rotor 9.
Rotate stops. DO the NOTset FORCE! rod counterclockwise until it This re-engages the rotor gearing mechanisa for normal operation. Turn or check the intera of these gears. tttent gear to ensure engagement 6.14.2 Diaphragm, or Other Non-Wedging Type Valve ,
1.
Ensure all electric power is turned off to during switch adjustment. prevent the electric actor driv This eliminates the potential to the valve. injury to servicing personnel or damage 2.
Manually operate the valve in the "CI.0 SED" direction.
intermittent Note gear shafts. the direction of rotation of the below. Record this direction Direction of Rotation:
Clockwise Counterclockwise O 3.
With the valve fully. closed, it must be opened slightly to allow for backlash and coast dovu.
Rotate the handwheel in the open direction until the valve stem starts to move.
4.
Turn the set rod clockwise until it stops.
NOT FORCEt DO By observing the inner rotor contacts (the ones l next open or closed.
to the gear box), note if these contacts are 5.
If the contacts are closed, turn the intermittent gear shaft in the direction noted in Step 6.14.2.2 until the rotor contacts open.
6.
If the contacts are open, turn the intermittent gear shaft in the direction opposite that noted in Step 6.14.2.2 until the rotor contacts close.
Now reverse direction on the intermittent gear
! shaf t and turn until the rotor contacts open.
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21 MP 1411.07.0
- 7. The Int.
[ 2 cotoe is to be set at this etme by
(. repeating rotor. Sectten 6.14.2 steps 5 and 6 for Inc. 2 6.14.3 SettingValves Globe Closed Limit Switch on Wedging Type Gate and NOTE:
To ensure proper operation of the torque bypass switch during valve unseating MOVATS Test Procedure, Reference 2.1 will provtde the proper " CLOSED" limit switch settings.
1.
Ensure all electric power is turned off to prevent the electric motor drive from turntag on during switch adjustment. This eliminates the potential to the valve. injury to servicing personnel or damage l
2.
Manually operate the valve in the " CLOSED" I direction.
! Note the direction of rotation of the intermittent below.
gear shafts. Record this direction Direction of Rotation:
Clockwise Counterclockwise p
g 3.
With the valve fully closed and manually engaged, rotate the handwheel in the "0 PEN" direction the number of turns specified by the MOVATS Test Procedure, Ref. 2.1. '
4 Turn the set rod clockwise until it stops DO NOT TORCE!
By observing the inner rotor contacts (the ones next to the gear box), note if these contacts are open or closed.
- 5. If the contacts are closed, turn the intermittent gear shaft in the direction noted in Step 6.14.3.2 until the rotor contacts open.
- 6. If the contacts are open, turn the intermittent gear shaft in the direction opposite that noted in Step 6.14.3.2 until the rotor contacts close.
Now reverse direction on the intermittent gear shaft and turn until the rotor contacts open.
{
n- - - . ... . _- _-,-. _ , - _ - --- -._- -.-_-
22
.1P 1/.11.07.0
- 7. ,
The Int. 2 rotor is to be set at this time by I repeattag rotor. Secutoa 6.14.3 steps 5 and 6 for Int. 2 3.
Rota'te the set rod counterclockwise until it stops. Do NOT FORCE!
gearias anchaatse for moraal operation.This re-engag check the Later Turn or of these gears,mitteet gear to ensure engagensat 6.13 Setting Torque Switch i NOTE 1:
Testing Frocedure, Ref. 2.1, or by Engin NOTE 2:
The assaitude of the compress 1oa of the torque spri i is espirically calibrated in foot younda and a aenaaepl t
- is affiaed to each switch compartment deaccias the j calculated torque output at that setting.
appitcation is alae marked on the torque swit calibration nameplate.
6.15.1 l Torque setting must be ande with switch mounted in the operator.
6.15.2 Nake sure all electric power is off.
Shift the valve andiate position.to assual operattoa, and place the - valve in an in 6.15.3 Looses the the adjusting required setting. screve and move the potaters to '
Tightaa the adjusting screws.
6.15.4 Operate valve electrically La conjunction with the MOVATS Test Procedure, Ref. 2.1, to determine if
~ torque switch is operating properly.
b' d 5 , o 1'
,h'." N d M #adjusteemt is required, repeat M _5i. d"#4tutdeT.'N," , :i Section 6.1 6.16 Energiaaties and CheckeTt odiatterquToperators followin
-4,-
Matatenasse, Repair, or New fasta11ation g g % .,g .,.. . , , , ,.
NOTE: . w .u % . .,,
U **
INNATS Ret. 2.1. test unit any be installed at this time per er dm.
- A A. 4 73,. ,;
.9 6.16.1 wrw ex . .
pia ta.
Nassally place valve in the aid position. Check for e-~q,n . n..,,,,, e about 1 seceed. correct polarity by energiatas the opea circuit.for w '
s NOTE:
If valve travels is the opea direction polarity is correct.
If valve travels in l
---we - -
~
23 MP 1411.07.0 i
the closed direction, 1) de-energize the ctreuit immediately, 2)' exchange any two (2) phases if AC, or if DC, reverse the A t and A
2 connectione.
6.16.2 Energize the valve in the open direction.
After the motor has stopped, turn the operator handwheel to ascertain whether adequate clearance exists between the position valve at which the valve stes comes to rest and back seat.
6.16.3 Energize the valve in the closed direction.
actor has stopped, turn the operator handwheel After to the determine if proper seating has occurred.
In the case of wedging type valves, difficulty in turning the handwheel in the open direction should be encountered until the dise clears the seat. For non-wedging direction, but should turn relatively easily in theva opening direction.
6.16.4 operate the valve through two (2) complete cycles of open and close to ensure proper operation.
6.16.5 If during checkout adjustments are necessary, refer to the appropriate section of this procedure.
6.16.6 Ensure data possible. sheet is completed to the maximum extent 6.17 Inspection and Testing 6.17.1 For5061.02, ST Type C Containment Isolation Valves (as listed in LLRT), a Local Leak Rate Test (LLRT) will be performed as determined by Maintenance Engineer.
LLRT aust be performed if repairs may have affected the valve seating capabilities.
6.17.2 For Containment isolation valves as listed in ST 5064.01, perform cycling test and record isolation time (where applicable) per ST 5064.01.
O
~. .
. 24 MP 1411.07.0 DATA PACKAGE FOR MOV. _
O LIMITORQUE VALVE OPERATOR MODEL SMC-04 CORRECTIVE MAINTENANCE A. GENERAL INFORMATION:
Limitorque operator Type / Size Serial Number /_ Handwheel Turns Order Number Full Closed to MWO Number Full Open B. TORQUE SWITCH DATA:
AS FOUND SETTINGS:
Open Close AS LEIT SETTINGS:
Open Close CALIBRATION PLATE DATA:
NORMAL SETTING O Number Foot Pounds MAXIMLt SETTING:
Number Foot Pounds LIMITER PLATE:
Size C. LIMIT SWITCH DATA:
Valve Position When GEAR BOI:
- Switch Disengaged j
SIZE l
Eight (8) contacts Sixteen (16) contacts (Check One) i o
,-.I.u
., , . i M. '
- _ - _ - . . - . - . . . . --,_- _ ~ - . . - . - . - - _ - - - . . - - - - - _
. y < ,
- 25 N MP 1411.0 7.0 D. MOTOR DATA:
Foot Pounds Horse Power Int.tial Inrush Current Runcing Current VOLTAGE:
Voltage During Operation AC Amps to , Torque Out DC Stroke Time CURRLVT:
Run Locked Rotor For DC Motors Insulation Class Shunt Current Duty Rating __ Armature Current.
Speed E. SPRING PACK DATA:
CALIBRATION PLATE DATA:
Part Number '
Number of Washers
Thickness of Washers t s s x
AS FOUND DATA: '
Number of Turns in Locknut ____ i Orientation of Washers: Sat ~~~ Unsac Number of Washers ' "~~
Thickness of Washers "
AS LEFT DATA:
Number of Turns on Locknut Any Changes Made to Washers Page 2 of 3
26 MP 1411.07.0 F. GEAR SIZING DATA:
O Motor Pinion Gear Worn Shaft Gear NOTE:
The total number of teeth in the motor pinion / wore shaft gear gearset, aust be as follows:
SMC-04 32 Teeth G.
STEM NITT DATA:
TTPE:
One (1) Piece Two (2) Piece Threaded Non-rising H. CottMENTS:
O Completed by:
Date: '
i I
l i
Page 3 of 3
-,e-w---+ , - , .-,,r,me,,-,--r-..-----,-,- -- .-w- . -,-~ ,----,,_----.--,,,-..---..---------,-,--.-_..---,-------,-m- - , . , - , ,
27
. MP 1411.07.0 DATA AND SIGN 0f7 SHEET
\
1.
Procedure and attachments have been verified with the control copy.
Verified Date 2.
All notes, cautions, precautions, and limitations have been read and understood.
Verified Date 3.
The following sections oft 'he procedure were performed and verified as completed.
4.
The data to returned sheets have been reviewed and the valve is ready to be service.
Verifiec Date 5.
The Shift Supervisor has been notified that work is complete and the system has been restored as directed by the Shift Supervisor.
Verified Date i
l l
Page 1 of 1
- 4 .. . . . .
3.7
O O O Figure 1. Declutch Shaft Assembly SMC - 04 j-
\ ROLL PIN SPACER MEY i DECLUICH gty -DECLUECH ti vs a SHAfI FLANCE SEARING e, LAICH PINION QUAD RING CtEVIS PIM i.
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f jf LAICH L ilAl WASHER i!
E? d' 1 T Coll [R l*lN SPACfR 10RSION SPRING MANDREL -
Il DiClUICH SHAfI CAP
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Figure 3. Drive Sleeve Assembly SMC 04 up*En 8EAnsNG r- ---- ,
UUUUU l !
BEVEL GEAR f l
l l I d
, CLUTCH SLEEVE COM8'ESSION ! '
SPRING I
l CAP SCREW SPRING CUP 3
_# l ECCENTRIC RING l -_
O KEY hO 3
%~ J l
l l
l THRUST waswia THRUST SEAsiNG ,
l ,(
a-THRUST WASw!4 a
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l wCRM GEAR V l \
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g v d i
i l ' LOWER SEARING V
l t
V, 1 I
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i l i t._______a O
= age 1 of I s
e
- O O O i Figure 4. Limit Switch Setting SMC - 04 INT 1 ROTOR '
INT 2 : ROTOR I
OPEN ROTOR r
\ /
O \ /
O a sEO RO1oR
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O l
(O : ,_s K 0) o '
(0) f INTERMITTENT GEAR SHAFTS lh ' 2
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[l SET ROD
32 MP 1411.07.0 s COP 0f!TMENTS 1
_ STEP NO. CotStITME.E DOCL?!ENTS RITERENCES !
COMMENTS I All Corrective Action Plan 12-1 This entire procedure was gener-ated in response to LCTS 1262 O
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O E Page 1 of 1 Wi ~- j'qy w
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