ML20071D936
| ML20071D936 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 02/02/1983 |
| From: | NUTECH ENGINEERS, INC. |
| To: | |
| Shared Package | |
| ML20071D886 | List: |
| References | |
| M-SNUB, NUDOCS 8303110374 | |
| Download: ML20071D936 (350) | |
Text
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.4EMECHANI. CAL.. EQUIPMENT
.EQUALIEICATION 2ROGRAM M-SNUB
.;-dydraulic Snubbers i
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l RiiVISION CONTROL SHEET 9 TITLE: Hydraulic Snubber REPORT NUMBER: M-SNUB 411. /V;.,< $2 -l6rncd/nid MPL NAME / TITLE INITIALS C ld S4 llem. / Co MSut TA Alf GwA NAME / TITLE INITIAt.S
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. PREPARED ACCURACY CRITERI A
'# ' REMARS BY / DATE CHECK BY / DATE CHECK BY / DATE 1 1 Revised qualification status to thirty (30) day post accident 2 1 Revised CDES for thirty (30) day post accident and revised accident radiation 4 1 Revised MEEQS (2) for thirty (30) day post accident and revised accident radiation l 10-23 1 Revised MEEQRFs to in-clude additional design and test data including a thirty (30) day post accident operability 27-30 1 7p g2 2/2/f3 y 2/2/85 ur< %df Revised Appendix A to include a thirty (30) day post accident operability period 6 QEP 3 3.1.1 REV O t
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[" TABLE OF CONTENTS s . I. QUALIFICATION PROGRAM 1 A. Mechanical Equipment File Cover Summary Sheet (MEFCSS) B. Component Data and Environment Sheet (CDES) C. Mechanical Equipment Environmental Qualification Sheets (MEEQS) D. Equipment Applicability Evaluation Sheet (EAES) E. Component /Part Summary Sheet (C/PSS) F. Mechanical Equipment Environmental Qualification Review Form (MEEQRF) G. Maintenance and Surveillance Recommendations i H. Appendix A I. References and Additional Data [ J. Generic Figures I l II. REFERENCES l ) 1
7-sq Mechanical Equipment File Cover Summary Sheet ( w Equipment Type : Hydraulic Snubber MEO Prog No.: M-SNUB 1 Manufacturer /Model No: ITT Grinnell/ Miller Cylinders Model 52 and l Model 90 Safety Function: The primary function of the Hydraulic Snubber is to protect fluid systems and components important to safety from the effects of seismic disturbances and other types of transient dynamic loadings such as water hammer, steam hammer, pipe whip and relief valve actuation while permitting minimal restraint against thermal expansion.
! Operation :
Hydraulic Snubbers generally consist of an assembly of a double-acting hydraulic cylinder, a reservoir, and a flow control device, e.g., orifice valves on the ends of cylinder ports. Ideally, under slow movement due to thermal expansion, the system or components i supported by snubbers will move freely as if the snubbers do not exist ['N because the hydraulic fluid inside the cylinder flows through one of ( ) the valves into the reservoir and then flows into the other end of the
' cylinder until the imposed force is balanced. When a body or internal force is applied suddenly with the flow restricted by the flow control device, snubbers will limit dynamic responses so the supported system will not be overstressed.
Qualification Status : The ITT Grinnell Hydraulic Snubbers are qualified for a forty (40) year service period and a thirty (30) day post accident condition provided that periodic inservice inspection and functional test of the hydraulic snubbers and replacement of the hydraulic seals and fluid are performed according to the surveillance and maintenance recommendation developed in Section G. l O 1
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x MIDLAND UNITS 1 AND 2 EQUIPMENT QUALIFICATION
SUMMARY
COMPONENT DATA AND ENVIRONMENT SilEET _ EOutPMENT ID NUMDER Generic PARAMETER Normal LOCA MSLB
~ DE sfillP TION. Hydraulic duuuber OPERABILliY PE!) LOD;,.a .%y =M rsa . JU..payE: w ,_iM day,%
SERVICE: Reactor Coolant Pump Support , Dynamic _ Dynamic , 6.5SAFE,TY FUNCTION. h ,'. I)y n am ic .resfCalot,
.. 3 . /d erestpint~. 2LrestJatTith MANUFACTullER. ITT Grinnell A. TEMPERATURE IFl 50-120 F-1 l' - 4 MODEL NO: Miller Cylinder Model 52/90 a.z.PRESsunE n ; ~ . WO 1~TATMT",,. ' ' "" F- 1 ? : F-2 #7
;.qy'160 SYS1LM. H/A PO NO: M-SNUB EEOS NO. M-yNUB C. HUMIDITY (PERC rig 0-100 100 ROOM NO.105A BLDG: R1 ELEVATION 614 D/flADIATION IRADS)..^'s s.4 'JI;6 07" E. SPRAY NA
" 71}"3y0U EnDy'iLOCAT l-OPE!1ATING CYCLES: N/A NONSEISMIC VIDR: N/A r?OEN/jR;. >
TIESPONSE SPECTRUM FIG: Future use F.'.susMET10tNCE.' Ai~ e !N A?.: , *TN/A>". I . LOCA. Yes MSLD: SAFE SD. Ilot , Cold ' llELD OUTSIDE RD: N/A G.* ACCURACY E . '3F & N/ Af~ W.N/A1 $ EN/A M f'. NOT ES: .I. L. ..RE S. P. O,N S E , TIM E . , s. . .N/A> N/A ..
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EQUIPMENT ID NUMDER Generic PARAMETER Normal LOCA MSLB Di3CiilPTION. Hydraulic dnuouer .iOPERABILITY PElllOp . JAv. years.i . 30.d ys.. ? Dyn.amic Dynam c sI)30.ynam dYya.; c M S[llvlCE: Reactor Coolant Pump Support SAFETY FUNCTION *' PO* .[iNSE ' 7*TI [restralMC i jeittaint" 7EreStfal{d M ANUF ACTUllER: ITT Grinnell A. TEMPEftATUl;E (F) 50-120 F-1 F-2 ~'~ MODEL NO: Miller Cylinder Model 52/90 DJPRES$URE C. lJ V . R ATHy.: m - xF-11% M lJFt2M fL _ SYSTEM N/A PO NO: M-SNUB EEOS NO; M-SNUB C. HUMIDITY (PERC RIO 0-100 . 100 ~iisu ROOM NO. lDSA BLDG: R2 ELEVATION: 614' D[ RADIATION lRADS)MRC NH6 OTW C1753 s08I "EriGv'10CA OPLRATING CYCLES: N/A NONSEISMIC VfDR N/A E. SPRAY NA T-1 T-1 RESPONSE SPECTRUM FIG Future Use 'F/$UDMEltdENCE ' "U .. ' TN GW . Ut)/M.T NM/KGM +T7~' LOCA: Yes MSlo: Yes SArE SD: Ilot e Cold
- in/AT'e FilMN/A.M HELu OUTSIDE Re: N/A 4.TACCORACVF ... ' E 'iN/Ai P lL TIESPONSE TIME N/A N/A N tJO T E S:
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[OUIPMENT ID NUMDER PARAMETER D'E S CRIP TION. :dOPERABILITY. FEniOD :.:g. ;.p;a.gu uce ,, ,o c m ,, ;gg , , . a . , SERVICE: SAFETY FUNCTION ~ ( y . l f y E , ,j.yN; Tyf9'P/EM y [J. * ' , ' " * " - "fqqp?.g;g MANUTACTUI1ER: A. TEMPERATURE (F) ' MODEl. NO D2 P%SSURE 1_ i..' $55f; '7T"W ' '
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SYSTEM PO NO. EEOS NO C. IldrwMITY (PE3C RIO ' ROOM f1O: DLOG: ELEVATION. p..' H ADIM")N (R ADS) n7 ' > a , , MD::';P'; ' OPtilATING CYCLES: NONSEISMIC VIDR: E. SPilAY llESPONSE SPECTituM FIG- F.; SUOMERGENCE ,p.' , w.. Wi"$.F d , 1 OCA: MSL8: SAFE SD. lit LD OUTSIDE RD: G..' ACCtlHACY .. , s ,, 7pp. t ' sM,Eys.i .:4 2 HOTES: I.L I.1E. SP. ONSE TIME
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MECHANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION SilEET (1) TYPE OF EQUIPMENT: Ilydraulic Snubbers MANUFACTURER: ITT Grinnell Corporation PROGRAM NO.: M-SNUll MODEL NO.: Miller Cylinder Model 52/Model 90 EQUIPMENT APPLICABILITY: ACCEPTANCE REF. PAGEfS) Model Qualified, Configuration and Interfaces Match Installation y Apdx. 14 - EXTERNAL NORMAL OPERATING CONDITIONS REQUIRED QUALIFIED ACCEPT. METIIOD III REF. PAGE(S) Apdx. A QUALIFIED LIFE (2) 40 years 40 years Y AN No. 1 - RESPONSE TIME N/A N/A N/A N/A N/A N/A w ACCURACY N/A N/A N/A N/A N/A N/A TEMPERATURE, MIN. 50 F 50 F Y AN j^ _ TEMPERATURE, MAX. 120 F 120 F Y AN,PC f((,
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TEMPERATURE, AVE. N/A N/A N/A N/A N/A N/A Aprix . A PRESSURE ATM ATM Y AN No. 3 - Ap1x A No. 4 IlUMI DITY , MAX. 1007, '1007, Y TC Ref. 10 2,3 l TID (RADS) 1.6E07 1.6E07 Y TC Ref. 10 2,3 i l OPERATING CYCLES N/A N/A N/A N/A N/A :1/A (1) Qualification Method Symbols: TT-Type Test, PT-Partial Type Test, TC-Test of Vital Components, OE-Operating Experience, AN-Analysis (2) Qualified without exception X with exception (See MEFCSS)
1 MECHANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION SHEET (2) i
! ACCIDENT ENVIRONMENT: LOCA Yes MSLB Yes HELB OUTSIDE RB N/A PROGRAM NO.: M-SNUll i
ACCEPT- i REQUIRED QUALIFIED ANCE METHOD III REF. PAGE(S) Apdx. A l OPERATING TIME 30 days 30 days Y AN No. 6 RESPONSE TIME N/A N/A N/A N/A N/A N/A l ACCURACY N/A N/A N/A N/A N/A N/A ; Apdx. A l TEMPERATURE F-1, F-2 F-2 Y AN No. 2 Apdx. A
^ PRESSURE F-1, F-2 F-1 Y AN No. 3 Apdx. A TID (2) (RADS) r/p 3.9E07/1.3E08 3.9E07/1.3E08 Y AN No. 7 l
Apdx. A SPRAY T-1 T-1 Y AN No. 8 l Apdx. A SUBMERGENCE N/A N/A N/A 'N/A No. 13 LONG TERM FAILURE OF SIIORT-TERM USE Apdx. A EQUIP. WAS ADDRESSED N/A N/A N/A N/A No. 12 ! ACCELERATED AGING TIME / TEMPERATURE 72hrc/2680F (References 10 & 16) I i (1) Qualification Method Symbols: TT-Type Test, PT-Partial. Type Test, TC- Test of Vital : Components, OE-Operaticg Experience, AN-Analysis (2) Includes the dose acquired under normal operating conditions over the equipment qualified life. 1 \ l
s s_/ EQUIPMENT APPLICABILITY EVALUATION SIIEET 1 EQUIPMENT: IIydraulic Snubbers PROGRAM NO.: M-SNUll ESSENTIAL FOR MFGR./MODEL NO. C/PSS 1 SUBSYSTEM COMPONENY - FUNCTION DATA REF. REMARKS 1 J Cylinder Ilydraulic Snubber Assembly Y ITT Grinnell A Paoes 1-4m MEEORIf Reservoir . Assembly Y ITT Grinnell B Paoen 5-8. MEMOltP Valves Y ITT Grinnell C Panes 9-12, F1ECOlti u, Ilydraulic Fluid Y ITT Grinnell D Pace.13. MEEORP Rod End Connectot Page 14, MEEORP
- Appendix A, No. 9
/End Connector Y TTT Grinnell N/A 1
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s 1 w s COMPONENT /PART
SUMMARY
SIIEET A i EQUIPMENT: Ilydraulic Snubbers COMPONENT: Cylinder Assembly PROGRAM NO.: M-SNUB
, NON-METAI LIC ESSENTIAL REPLACE- REQUIRE-i PART FOR REF. REF. MENT BASIS REF. MENTS REF.
DESCRIPTION FUNCTION DOC. MATERIAL DOC. INTERVAL (1) DOC. MET DOC. REMARKS O Ring h[dNral OE, 4,15, Appendix A l Fill Port Plug Y l Mogul E-50 4 5 years AN 16 N/A N/A No. 10 0 Ring pgggral OE, 4,15, Appendix A Fill Port Plug Y l Mootl E-50 4 5 years AN 16 N/A N/A No. 10 External Bearing gPDF OE, 4,15, hgdx10^8cd Seal Y 11 ES3b 8net 4 5 years AN 16 N/A N/A 52 only O Ring-End Seal Y l kcO5hnet OE, 4,15, Appendix A E17018 4 5 years AN 16 N/A N/A No. 10 m OE, 4,15, Appendix A Piston Seal Y l NU$",Salis bury 80154 4 5 years AN 16 N/A N/A No. 10 ! NN MRubber OE, 4,15, Appendix A Rod Wiper Y l No.559-EO 4 5 years AN 16 N/A N/A No. 10 l bn9" Rubber OE, 4,15, Appendix A , Rod Seal Y l No.559-EO 4 5 years AN 16 N/A N/A No. 10 l l i ; I (1) Replacement Interval Basis Abbreviations: OE-Operating Experience, AN-Analysis, MR-Manuf acturers Recommendation
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COMPONENT /PART
SUMMARY
SHEET B i EQUIPMENT: Ilydraulic Snubbers COMPONENT: Reservoir Assembly PROGRAM NO.: M-sNun NON-METALLIC ESSENTIAL REPLACE- REQUIRE-PART FOR REF. REF. MENT BASIS REF. MENTS REF. DESCRIPTION FUNCTION DOC. MATERIAL DOC. INTERVAL (1) DOC. MET DOC. REMARKS O Ring pggM OE, 4,15 Appendix A Outlet Adapter Y l Mogu[ab-50 4 5 years AN 16 N/A N/A No. 10
; O Ring j{QM OE, 4,15 Appendix A Pilter Adapter 'Y l ,4ogu[b-50 4 5 years AN 16 N/A N/A No. 10 0 Ring EPgM OE, 4,15 Appendix A Drain Adapter Y l kOgO5"b-50 4 5 years AN 16 N/A N/A No. 10 0 Ring pggM OE, 4,15 Appendix A Mtg. Studs Y l Mogu[ab-50 4 5 years AN 16 N/A N/A No. 10
'8 O Ring E OE, 4,15 Appendix A Class Gauge Y l bggMoquI -50 4 5 years AN 16 N/A N/A No. 10 i
O Ring OE, 4,15 Appendix A
$$hN Cap Y l .4ogu[a .-50 4 5 years AN 16 N/A N/A No. 10 t
(1) Replacement Interval Basis Abbreviations: OE-Operating Experience, AN-Analysis, MR-Manufacturers Recommendation
O O O COMPONENT /PART
SUMMARY
SHEET c EQUIPMENT: Ilydraulic Snubbers COMPONENT: Valve PROGRAM NO.: M-SNUH NON-METALLIC ESSENTIAL REPLACE- REQUIRE-PART FOR REF. REF. MENT BASIS REF. MENTS REF. FUNCTION DOC. MATERIAL DOC. INTERVAL (1) DOC. MET DOC. REMARKS DESCRIPTION Valve Stem OE, 4,15 Appendix A. heheral l Thread Seal Y l Mogul E-50 4 5 years AN 16 N/A N/A No. 10 Vel %ge OE, 4,15 Appendix A
's"ge ead g SO51' Adjust- Y l Mogu[alE-50 4 5 years AN 16 N/A N/A No. 10 0 Ring - Valve Sy@M OE, 4,15 Appendix A Male Connector Y l MoquIa -50 4 5 years AN 16 N/A N/A No. 10 E OE, 4,15 Appendix A 0 Ring - Valve b $[a Retainer Plate y 1 bog u -S0 4 5 years AN 16 N/A N/A 10. 10 m O Ring - Circle EPOM j OE, 4,15 Appendix A Seal Valve Y l Ii8f85"E-50 4 5 years AN 16 N/A N/A rio . 10 0 Ring - Circle Eggttc OE, 4,15 .Tppendix A Seal valve Y ] toqu[ -50 4 5 years AN 16 N/A N/A rJo . 10 1
(1) Replacement Interval Basis Abbreviations: OE-Operating Experience, AN-Analysis, MR-Manufacturers Recommendation
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MECNANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION REVIEW FORM b COMPONENT: Cylinder Assembly PAGE 1 OF 14 MFGR.: ITT Grinnell l PROGRAM NO.: M-SNUB DWG./ DOC. NO.: PHD-5222-SK-51, PHD-5222-SK-52 MODEL NO.: hpdf 'Y *
- of Ref 1, Paces 32,33 LOCATION: R3, Rn 105A, 614Fr SAFETY RELATED: YES X NO DISCUSSION:
The cylinder assembly is a double-ended piston rod design. The end connectors connect the hydraulic cylinder to the attachments of the supporting structure / component. The hydraulic fluid flows into/out of the cylinder through the cylinder fill ports and valves to absorb the displacements due to the thermal expansion and compression. For a sudden dynamic load due to the incompressibility of hydraulic fluid i and the velocity limitation of the valve, the cylinder containing l hydraulic fluid acts as a dynamic restraint of the supported component / system. PART DESCRIPTION: 0 Rinc- Fill Port Pluc, item 24, PHD-5222-SK-52 of Ref ] V FUNCTION: To prevent leakage of hydraulic fluid through fill port. SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the restraint function of hydraulic snubber to a dynamic load. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 b !bh U materia! analyc4c v pos_ a Rads (5 vear a- a vital nn - ks *i ^ olus Ponent test pnse 30 n om d Nne 3500F 4 3 2 1 0p _ , ,,,4 - ,,- g,,rsacy . ,n g r , .. Y Ref. 4, 17 suface temp- ture ana;.vsis neax. A, , erature anc vita. com- No. 2 ponent test l l l lO\j . i
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. ~ . , _ . _ . . - _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ . - . _. . _ _ . . . _ _ _ _ .. ._ . - - - - - -
i MEEORF (CONT.) l PAGE 2 OF 14 lPROGRAMNO.: M-SNCB PART DESCRIPTION: O Ring - Fill port pluc , Item 2 3, P.HD-52 22-SE- 51 cf Y
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FUNCTION: To prevent leakace of hydcaulic fluid from fill port. SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and .tence a loss of the restraint function of hydraulic snubber to a dynamic load. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation- Material analy- Y Ref. 4 7 Racs sls anc vital To,63Eveyear plus qpcx. A comcone t test ce . 7 30 day post
;, ~. , a 3 3500F 4 321oF-maximum Surface temo- Y Ref. 4,17 surface era ure temo-' eratur$
sis an vitaianaly-sPcx. n No. 2 compcnent test PART DESCRIPTION: External Bearinc Seal, Item 27, PHD-5222-SK 52 of Ref.1
/^N FUNCTION: To prevent leakage of hydraulic fluid from hydraulic cylinder \mj SAFETY RELATED: YES X NO Seal fai' lure results in a loss of hvdraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load.
MFGR.: Acushnet MODEL NO.: E17018 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- , DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation- Material analy-- Y Ref. 4 4 . o .o r o e nacs sis anc vacel p- dx , A (5 year clus comoonent test No. 7 30 day accidenkost ) 3500 F 4 3210F-maximum Surface temo- Y Ref. 4, 17 surface temp- erature analv-t erature ris and vital Aodx) N6. A l component test . I
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l l MEECPS (CONT.) PAGE 3 OF 14 l PROGRAM NO. : M-SNUB PART DESCRIPTION: O Rfr.g - End Seal, Item 14, PHD-5222-SK-51 of Ref.1 FUNCTION: To prevent leakaze of hydraulic fluid frcm hydraulic cylinder. V' SAIETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the restraint function of hydraulic snubber to a dynamic load. MFGR.: Acushnet MODEL NO.: E-17018 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 t 63E07 Racs sls anc vital apcx. n 7'5 vear clus cocconent test No.7 1 30 dav
- I acm donEost --)
3500F 4 3210F-maximum Surface temp- Y Ref.4,17 surface temp- erature analy- A o-a+n e sis anc vita 1 9'ccx2 6. component test PART DESCRIPTION: Piston Seal, Item 2, PHD-5222-SK-51 of Ref. 1
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( \, FUNCTION: To prevent leakage of hydraulic fluid frcm hydraulic cylinder. i , k/ SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the restrain function of hydraulic snubber to a dynamic load. MFGR.: W. H. Salisbury MODEL NO.: 80154 MATERIAL": Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y 'Ref. 4 2.63E07 Rads sis and vital Apcx. n (5 vear clus conoonent test No. 7 i 30 d,ev
,c- 4ne post l
350 0 F 4 3210F-maximum Surface temp- Y Ref.4,17 surface temp- erature analv- Apcx. A o-a+nvo mim nna vital No. 2 component test _ l l l l 1 l I I i 1 12
l MEEORF (CONT.) PAGE 4 OF 14 PROGPAM NO.: M-SSU3 l PART DESCRIPTION: Rod Wiper, Item 15, PHD-5222-SE-51 of Ref. 1 FUNCTION: O To prevent leakage of hydraulic fluid from cylinder. SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load. MFGR.: Minnesota Rubber MODEL NO.: 559-EQ MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 2.63E07 Rads sls anc vital npcx. n l (5 vear clus comoonent test No. 7 30 dav co accidenh) st 3500 F 4 321oF-maximum Surface temp- Y Re f . 4,17 surface temp- erature analv-a-a m-a sis and vital Accx$ Nb. n component test PART DESCRIPTION: Rod Seal, Item 6, PHD-5222-SK-51 of Ref. 1 i [N FUNCTION: To provide a seal between the cylinder and the rod bushing assenbly.
'v' SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load.
MFGR.: Minnesota Rubber MODEL NO.: 559-EQ MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analyd Y Ref. 4 2.63E07 Rads sis and vital Accx. A (5 vear plus comoonent test N6. 7 30 dav knst arc,co T 3500F 4 321oF-maximum Surface temp- Y Ref . 4,17 surtace temp- esature analv- nPda. n erature sis and vital No. 2 l component test l 1 I I I 13 1
I MECHANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION REVIEW FORM
'm
/ 1 COMPONENT: Reservoir Assembly PAGE 5 OF 14
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's-/ MFGR.: ITT Grinnell PROGRAM NO.: M-SNCE DWG./ DOC. NO.: Pio-5222-5K-63, PHD-5222-5K-85 MODEL NO.: Oil-Rite
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of Ref. 1. once 44 & 46 LOCATION : RB , Rm 105A, 614FT SAFETY RELATED: YES X NO DISCUSSION: The reservoir attached to the hydraulic cylinder compensates the volume change and allows the piston to freely extend or retract resulting from the thermal expansion and contraction of the hydraulic fluid or the safety related fluid system / components restrained by the hydraulic snubber. The sight glass assembly of reservoir provides the accessibility of the hydraulic fluid level. Any leakage due to the seal failure may compromise the fluid integrity of the hydraulic system and be injurious to the hydraulic snubber's safety function. (y; PART DESCRIPTION: 0-Ring-outlet adapter, Item 9, PHD-5222-SK-63 of Ref.1 FUNCTION: To prevent leakage of hydraulic fluid frcm the reservoir outlet adapter. SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analv- Y Ref. 4 l 2,63E07 Rads sis and vital Andx A i (3 vear clus comoonent test NN. i j 30 cay post l accident) 3500F 4 3210F-maximum Surface temoera- Y Ref. 4,17 ture vital surface temp lanc analysis com- Aodx A l l erature Nb. 2 ponent test 1 l ! I I I I l 14 l e
1 MEECRT (CONT.) PAGE 6 OF 14 l PROGRAM NO. : M-5: C5 PART DESCRIPTION : 0-Rinz-Filter Adapter. Item 15, PHD-5222-SK-63 of Reil l
~~
FUNCTION : To prevent leakace of hydraulic fluid from the reservoir. _ SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the restraint function of hydraulic snubber. I KFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 2.63E07 Ra,ds sis and vital Apcx. n
<c -n,- so_ 7 7 ,, e -- 7n-o . eme-i 30 day post a v e.uc.w )
1;nor 4 3210F-maximum Surface temoera- Y Ref.4,17 I surface temo- tuve analysis nocx I erature bn3 vital com- Nc. 2 n ponent test PART DESCRIPTION: O-Ring-Drain Adapter , Item 5, PHD-5222-SK-63 of Ref.1 [~% FUNCTION: To provide a seal between the drain adapter and the reservoir.
'w )
SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S ) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 2.63E07 Rads sis and vital ^Pu=. ^ (s yaar nine nn ponent test No. 7 1 30 dav p ACC1Centpst 350 F 4 3210F-maximum Surface temo- Y Ref. 4,17 surface temp- erature anaiv- Socx. a erature sis and vital he.2 component test l l 1 l 1 I , I l 15
MEEOPI (CONT.) l PAGE 7 OF 14 PROGRAM NO.: M-SNUB PART DESCRIPTION: 0-Rine-Mtc. Studs, Item 33, PHD-5222-SK-63 of Ref. 1 FUNCTION: To prevent leakage of hydraulic fluid frcra the reservoir sight glass. SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of ; the safety ' function of hydraulic snubber to restrain a dynamic load. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 ondiation - Material analv- Y Ref. 4 2.63E07 Rads sls anc vital nodx. n (5 vear clus comoonent test 56. 7 bcb5np9st L 3500F 4 3210F-maximum Surface tempera- Y Ref . 4,17 surrace temp- tu analysis npux. n erature and'evital com- No. 2 ponent test PART DESCRIPTION: 0-Rinc-Glass Guace, Item 37, PHD-5222-SK-63 of Ref. 1 p FUNCTION: To provide a seal between reservoir and sight glass gauge. \ ,
, SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the restraint function of hydraulic snubber to a dynamic load.
MFGR.: Federal Mogul MODEL NO.: E-50 MATERI AIi: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy-l Y Ref. 4 2 63E07 R ds sis and vital Accx A T$ vear o$us ccmoonent test Nb. 7 30 cav p st aCC1 dent 350 F 4 3210F-maximum Surface tempera-. Y Ref. 4,17 surrace temp- ture analysis npdx. n erature and vital com- No. 2 ponent test I , I I I I i
-I ,
I i i 16
MEEQRF (CONT.) PAGE 8 OF 14 PROGRAM NO.: M-SNCE PART DESCRIPTION: O Ring - Cap, Item 33, PHD-5222-SK-63 of Ref. 1 FUNCTION: Tc prevent leakage of hydraulic fluid from reservoir. SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4
- 2.63E07 Rads sis anc vital Apcx. n
(; "am* nine cm- mnant teet No. 7 30 cay post accident) 350 0 F 4 3210F-maximum Surface temp- Y Ref.4,17 surrace temp- erature analy- npux. n n-a+"-o sis and vital No. 2 component test PART DESCRIPTION: - FUNCTION: SAFETY RELATED: YES NO i MFGR.: MODEL NO.: MATERIAL ': REFERENCE (S) : DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) i l I l I I 17 6
- - - . -. - .- - . - -. n. ,-,,-.-.r_ , , _ - - - . - . , _ . --,,c . - - , - , , - - . - . , .~.------,- ..- ,,
'<ECHANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION REVIEW FORM
(' \ COMPONENT: Valves PAGE 9 op 14 i
\m '
!GGR.: ITT Grinnell PROGRAM NO.: S NE DWG./ DOC. NO.: PHD-5222-SK-55, PHD-5222-SK-70, MODEL NO.: N/A o f Re f- 1, Paces 36 and 47 LOCATION: RB, Pm 105A, 614PI SAFETY RELATED: YES X NO DISCUSSION:
The valves at each end of cylinder ports provide the channel of hydraulic fluid from reservoir to cylinder. Under slow movement due to thermal expansion or contraction, the hydraulic fluid flows through the valves into the reservoir or cylinder to balance the imposed force. When a body force or internal force is applied suddenly, the valves cannot carry the excessive fluid velocity, the hydraulic snubber therefore acts as a restraint to the supported safety related component / fluid system. / PART DESCRIPTION: Valve Stem Thread Seal, Items 9, PHD-5222-SK-55 of Ref.1
'w ' '
FUNCTION: To prevent leakage of hydraulic fluid through valve stem thread SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the designed safety function of hydraulic snubber. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 'ladiation - Material analv- Y Ref. 4 2 63E07 Rads sls and vital A ($ vear clus comconent test ASdx N . e au aay post acciaanH 3500F 4 3210F-maximum Surfaco temr- V on# 4;17 surtace temp- erature analv- apax. a erature sis and vital No. 2 component test
! I I I I I I 18
MEEORF (CONT.) PAGE 10 OF 14 lPROGRAMNO.: M- S:"J B PART DESCRIPTION:0-Ring -Valve Retainer Plate, Item 13, PHD 5222 g;5 9:
,/O FUNCTION: To prevent leakage of hydraulic fluid through the valve retainer plate D SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load.
MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material ar. ly- Y Ref. 4 2.63E07 Rads sis anc vital apcx. n tm ..n ,- - 1,, e --
- e ., c -- g ecre & 7 30 cav chst accicentT 3500 F 4 3210F-maximum Surface ten?- Y Ref.4,17 surface temo- esaturS> vitalapaAv- ocx erature sis an Nb. 2a component test PART DESCRIPTION: o Ring-Circle Seal Valve, Item 38, PHD-5222-SKgj pf.
l . /, 9s FUNCTION: To prevent leakage of hydraulic fluid through valve. l
'L/ SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a losc of the safety function of hydraulic snubber to restrain a dyanmic load.
MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- , DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radaition - Material analv- Y Ref. 4 2.63E07 Rads sis anc vital Apcx. n (5 vear clus comconent test No. 7 30 cav cost accident) l
~
3500F 4 3210F-maximum Surface temp- Y Ref.4,17 surrace temp- erature analy- apax. n om %-o mis and vital No. 2 component test l l l 1 I i 19
l l MEEORF (CONT.) PAGE 11 OF 14 PROGRAM NO.: M-sx;n l PART DESCRIPTION: EghgEM;;_gp2EStp$ns,Scrgw Tnread Seal, Items 5, ; FUNCTION: To prevent leakage of hydraulic fluid through velocity adjustment screw SA"ETY RELATED: YES X NO Seal failure results in a loss of hydraluic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynanic load. MFGR.: Federal bbgul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE EhiCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 2.63E07 Rads sls anc vital Accx. n f5 year nlue cc 7mnant tact N'o . 7 I au cav o st accident 3500 F 4 3210F-maximum Surface temp- Y Re f . 4 ,17 surrace temp- erature analv- npux. n e ature sis and vital No. 2 component test l PART DESCRIPTION: 0-Ping - Valve Male ~ Connector, Item 19, PHD-5 222;S1;- 5_5, l FUNCTION: 'Ib prevent leakage of hydraulic fluid through connec*wr
SAFETY BELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the safety function of hydraulic snubber to restrain a dynamic load.
MFGR.: Federal. Sbgul MODEL NO.: E-50 MATERIAL': Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 2.63E0i Raas sls anc vltal npcx.n (5 vear clus conconent test No. 7 30 dav post accident) 3500 F 4 3210F-maximum Surface temp- Y Ref.4,17 surface temp- erature analv- Accx. A arature nis and vital No. 2 component test i l I i 1 1 20
MEEORF (CONT.) PAGE 12 OF 14 lPROGRAMNO.: M-SSUB PART DESCRIPTION: 0-Rinc-Circle Seal Valve, Item 37, PHD-5222-h M3,Oi FUNCTION: To prevent leakage of hydraulic fluid from valve tubing G SAFETY RELATED: YES X NO Seal failure results in a loss of hydraulic fluid and hence a loss of the operability of hydraulic snubber. MFGR.: Federal Mogul MODEL NO.: E-50 MATERIAL: Ethylene Propylene REFERENCE (S) : 4 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 3.0E07 Rads 4 Radiation - Material analy- Y Ref. 4 2.63E07 Rads sls anc vital noux. n i c. ,.n,- ,3,,e -----,om.
- c. 36, 7 30 cav cost accid'nt) e 3500 F 4 3210F-maximum Surface temp- Y Re f . 4,17 n-,-,ce surfa -
temp- er,ature e e nc iita_ analy- Accx N6. 2 A component test PART DESCRIPTION: l CN FUNCTION: l I
'v j SAFETY RELATED: YES NO MFGR.: MODEL NO.:
MATERIAL: REFERENCE (S) : DESIGN REFER- , DEMONSTRATED ACCEPT- REFER-RATING (S ) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) O l V l l . l l 21
-t
MECHANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION REVIEW FORM
^
COMPONENT: Rod End Connector /End Connector PAGE 13 OF 14 _ MFGR.: ITT Grinnell PROGRAM NO.: M-SNUB DWG./ DOC. NO.: PHD-5222-SK-51, P'Tr-5222-SK-52, r MODEL NO.: RB, R:n 105A, 614?T of Ref. 1, Pages 32 and 33 LOCATION: SAFETY RELATED: YES X NO DISCUSSION: The rod end connector /end connector connects the hydraulic cylinder and the fluid system or components important to safety. There are no non-metallic parts contained in the connector assembly. Therefore, a Component /Part Summary Sheet is not required. ./D PART DESCRIPTION: V FUNCTION: SAFETY RELATED: YES NO MFGR.: MODEL NO.: MATERIAL: REFERENCE (S) : DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S ) REQUIREMENTS BY ABLE ENCE (S) l l ! I I I 22
MECFANICAL EQUIPMENT ENVIRONMENTAL QUALIFICATION REVIEW FORM f) 1 ) COMPONENT: Hydraulic Fluid pAGE 14 OF 14
\d MFGR.: General Electric Company PROGRAM NO.: M-SNC3 DWG./ DOC. NO.: N/A MODEL NO.: SF-ll54 LOCATION: RB, Rn 105A, 614Fr SAFETY RELATED: YES X NO DISCUSSION:
The hydraulic fluid used in the hydraulic snubber is a major load carrying member. The GE SF-ll54 fluid is a copolymer containing both methyl and phenyf units. ft has high terperature stability and can be used from -56 F to +540 F (Reference 3) . It has radiation resistance up to 5.0E08 rads (Reference 3) . The compatibility of SF-ll54 to the EPDM based seals used in ITT hydraulic snubbers was demonstrated in Reference 10. O ! PART DESCRIPTION: Hydraulic fluid FUNCTION: To carry the sudden dynamic load SAFETY RELATED: YES X NO Degradation of hydraulic fluid will hinder the operability of hydraulic snubber. MFGR.: GE MODEL NO.: SF-ll54 MATERIAL: Fethyl phenyl polysiloxane fluid ~ REFERENCE (S) : 3 DESIGN REFER- DEMONSTRATED ACCEPT- REFER-RATING (S) ENCE (S) REQUIREMENTS BY ABLE ENCE (S) 5.0E08 Rads 3 Radiation - Material analy- Y Ref. 4 z.o350/ xacs sls anc vital npcx. n (5 year clus comoonent test No. 7 30 cav post accident) 5400F 3 1200F-maximum Material design Y Ref. 3 envircamental rating - to rerature
\ " l I I 23
HYDRAULIC SNUBBERS MAINTENANCE AND SURVEILLANCE RECOMMENDATIONS O' M-SNUB Frequency Requirement Action Every refueling Inservice visual inspection of Any unit which outage or.the fails to pass scheduled inspec- 1. Any indication of- damage visual inspection tion periods or impaired operability. shall be removed (attached on from service and page 3) whichever 2. Attachments to the subject to func-is earlier foundation or supporting tional testing structure are secure. restored or replaced by an
- 3. The snubber has freedom operational unit.
of movement and is not frozen up.
- 4. Any external signs of leakage or any other conditions which may compromise the operability of the hydraulic system.
An adequate reservoir fluid
,e) 5.
volume is available for operation. At least every Functional test to verify that For the snubber 18 months or 1. Activation (restraining found inoperable, shutdown action) is achieved within an engineering the specified range of evaluation shall velocity in both tension be performed to and compression. determine whether or not the snubber
- 2. Snubber bleed, or release mode of failure rate, where required, is has imparted a within the specified range significant effect l in compression or tension. or degradation on For snubbers specifically the supported required to not displace component or under continuous load, system.
displacement shall be verified. l l 24
- HYDRAULIC SNUBBERS MAINTENANCE AND SURVEILLANCE RECOMMENDATIONS M-SNUB (Continued)
Frequency Requirement Action
- 3. The snubber has freedom All snubbers of of movement and is not the same design
, frozen up. shall be function-ally tested. Every five years
- Normal maintenance Replace all the seals listed on CPSS and the following parts:
Hyd-aulic Fluid Rod Wave Spring Piston Wear Ring l Rod Wiper Rod Bushing Rod Seal Cage Rod Pressure Ring l Retainer Screws This maintenance program follows the manufacturer's recommendation per Reference 1. 4 25 ( ----
I HYDRAULIC SNUBBERS
~O MAINTENANCE AND SURVEILLANCE RECOMMENDATION M-SNUB (Continued)
The first inservice visual inspection of snubbers shall be during the first COLD SHUTDOWN exceeding 24 hours after four months of power operation and shall include all snubbers. If less than two (2) snubbers are found inoperable during the first inservice visual inspection, the second inservice visual inspection shall be performed 12 months +_ 25% from the date or the first inspection. Otherwise, subsequent visual inspections shall be performed in accordance with the following schedule: No. of Inoperable Snubbers Subsequent Visual per Inspection Period Inspection Period
- O 18 months i 25%
2 6 months 1 25% 3,4 124 days + 25% , 5,6,7 62 days i 25% 8 or more 31 days 1 25% The inspection interval shall not be lengthened more than one step at a time. 26
APPENDIX A
- 1. The only non-metallic parts of the ITT Grinnell Hydraulic Snubbers are hydraulic fluid and seals at various locations.
The operating experience (Pages 84 and 86, Reference 4) and supporting analysis (References 3, 16) have demonstrated that the 5-year life of seals and hydraulic fluid is a conservative projection. With appropriate maintenance and surveillance schedules, developed in the Maintenance and Surveillance Recom-mendation Section, the qualified life of the Hydraulic Snubber is determined to be in excess of 40 years including a 30 day post accident condition.
- 2. The hydraulic fluid used in the ITT Grinnell Hydraulic Snubbers is GE SF-ll54 silicone fluid which has excellent high tempera-ture stability. It can be used from -56 to +5400 F which envel-ops bo th the normal and post-accident environmental tempera-
- tures (Reference 3). The seal material used in ' ITT Grinnell b Hydraulic Snubbers, EPDM, in general maintains its elastomeric character over a broad temperature range. -Typical service temperature range for continuous usage is f rom -700 F to 3500 F (Page 2, Reference 4) which envelops the normal service temp-erature of the hydraulic snubbers used in the Midland Units 1 &
- 2. The maximum surface temperature which the hydraulic snubber seals will experience during an MSLB is determined by support-ing analysis in Reference 17 to be 3210F since the EPDM has demonstrated performance at temperatures up to 350 0F, the I
qualification is acceptable.
- 3. The Ethylene Propylene base material used in this seal applica-tion can withstand very high pressure environments. In similar applications, EPR seals and 0-Rings were exposed to LOCA Sim-ulation Testing (See MEQ Program M.ll8) with temperatures up to 3580 F and pressures up to 45 psig. The seals in the hydraulic snubber are designed to maintain a high pressure differential
~
27 I
p (in excess of several tho usand pounds) between the internal b hydraulic fluid and external pressure. Any increases of environmental pressure actually decreases the pressure dif-ferential of internal fluid pressure and external pressure. Pressure qualification is acceptable.
- 4. The humidity requirement for the hydraulic snubbers is 100% RH as a maximum value. This value does not change for accident conditions. A test of Vital Components - Seals has been in-cluded in Reference 10 where the seals were exposed to a 100%
RH conditions without remarkable changes in materials proper-ties. Therefore, the humidity qualification is acceptable.
- 5. The primary function of the hydraulic snubber is to ensure the thermal behavior and the frequency response level of the Reactor Coolan t Pump System so that the induced reactions and the resultant stresses at the reactor coolant pumps are within Q allowable limits. Since carrying nonseismic vibration load is V part of the hydraulic snubber's safety function, the qualifica-tion is acceptable.
- 6. The required operating period for a hydraulic snubber is 30 days to maintain the reactor coolant pump integrity for a small LOCA. The non-metallic constituents of the hydraulic snubbers have been evaluated against the postulated environmental condi-tions over a 30 day post-accident period (See No. 2 and 7 of this Appendix and Reference 17) and found acceptable.
- 7. The to tal integrated dose requirement of 1.69E08 rads is for l the surface of equipment in a radiation environment of 1.3E08 rads beta and 2.3E07 rads gamma for 30 days post-accident (f rom EQ Submittal, Rev. 1, Table 1-6) and 1.6E07 rads for a 40 year normal service. Replacement of the seals and hydraulic fluid
- on a 5-year basis decreases the radiation dose requirement to 1.55E08 rads (2.5E07 rads gamma and 1.3E08 rads beta).
28
l s NRC IE Bulletin 79-01B states that the beta surface dose would be reduced by approximately a f actor of ten within 30 mils of i the surface of equipment. An additional 40 mils of thickness results in another f actor of 10 reduction in dose. There are several static seals whose surface is directly exposed to the l beta dose field. The rest of the seals are shielded by the metal parts which are much thicker than 70 mils. The thickness of the smallest size of those seals exposed to the air is 0.087 inch (Item 16, Page 26, Reference 4), which is Gyuivalent to j 221 mils. Considering that these seals are static seals, loss of one third of seal material (70/221 = 1/3) is unlikely to damage its sealing function. Therefore, the total radiation dose with a 5 year replacement interval can be reduced to I 1.3E06 beta (1.3E08/ (10 x 10) = 1.3E06) and 2.5E07 gamma. This results in a 2.63E07 total radiation dose which is enveloped by 3.0E07 gamma dose tested. The tests were conducted by ITT Grinnel on all the seals used in the hydraulic snubber for a total dose of 3.0E07 rads gamma (Reference 10) and sufficient ( resiliency is maintained in all cases to provide adequate seal-ing. Therefore, the radiation qualification is acceptable, j The GE SF-ll54 Hydraulic Fluid has excellent radiation resis-tance and is capable of absorbing up to 5.0E08 rads before gellation, which is much higher. than 2.63E07 Rads. The radia-tion qualification is acceptable.
- 8. The required project chemistry is given in T-1. The EPDM has demonstrated an excellent chemical stability (Reference 4, Page 2) . In addition, Midland EQ Programs E22A and E22B have demonstrated that the Ethylene Pro pylene Rubber material is qualified for a spray chemistry which is more severe than the required Midland spray chemistry. Spray chemistry qualifica-tion is acceptable.
O 29 l L-. ,_ _ _ _ _ _ _ _ _ _ _ _ _ . , _ . - .
l The Rod End Connector /End Connector is a totally metallic part 9. x and is not affected by the environmental conditions imposed during a LOCA or MSLB.
- 10. Seals.made of EPDM have lasted 5 years under working conditions and still maintained its safety function (Pages 84 and 89, Reference 4). A test conducted by ITT Grinnell on its hydrau-lic snubber seals demonstrates that the seals maintain suffi-cient resiliency to provide adequate sealing after 72-hours of exposure at 2680F. With Arrhenius Methodology a 5-year service life at 1200F is determined in Reference 16. The seal was tested with the GE SF-ll54 Hydraulic Fluid. The compatibility of EPDM and the hydraulic fluid has been demonstrated. There-fore, 5 years of replacement interval is adequate for qualify-ing hydraulic snubber.
- 11. As stated in No. 2, 7, and 10, GE SF-ll54 has an excellent stability against temperature and radiation. The 5-year (A_) projected life is conservative.
- 12. The hydraulic snubber is qualified for a long term 30 day operability period as described in this Appendix. Therefore this category is not applicable.
- 13. Because all the hydraulic snubbers are located at the level of 614 ft. which is higher than the flood level of 603 f t. , both normal and accidental submergence are not considered for snubber qualification. Thus this category is not applicable.
l l ! 14. The hydraulic snubber subjected to analysis as described in t this program is identical to the hydraulic snubber installed at the Midland plant, Units 1 & 2 as noted in References 1, 4. l t
- 30
l REFERENCES AND ADDITIONAL DATA 1 3 PAGE OF PROGRAM NO.: M-SNUB
- 1. ITT Grinnell Co., " Technical Manual for Maintenance Large Bore Hydraulic Snubbers", Report No. PHD-5222-lMBM, January 9, 1979.
- 2. Letter from Earl Tomlinson of W. H. Salisbury & Co. Linemens Rubber Protective Devices,
Subject:
Mechanical Properties of Compound #80154, dated December 8, 1982.
- 3. G.E. " Silicone Fluids in Radiation Environments", G.E. technical information CDS-4176, January 1981.
I
- 4. ITT Grinnell Co., " Final Report - Consumers Power Company Contract for Consulting Service for the Reactor Coolant Pump Snubber Seal Study for the Midland Plant", Report No. SPS-ZPR-8014-5, December 24, 1981.
- 5. ASME Boiler and Pressure Vessel Code, Section III, Division 1, Subsection NF.
- 6. EPRI, "A Review of Equipment Aging Theory and Technology", Report EPRI NP-1558, September 1980.
- 7. Federal Mogul Co., " Comparison - National Compound E50-70 to ASTM D200 Specifications 4CA715A25B44EA14F19G21 and 3DA715A26B36EA14F19G21" National 0-Rings Technical Report, 4
April 26, 1982. 1 i 31 6 l..,- , - . . ,, ,, w,,._, - - - - , , . - - , - . - - - - , . - _ , . . . - - ~ , , .n , . _ . - , - - - , .
4 PSFERENCES AND ADDITIONAL DATA PAGE 2 OF 3 PROGRAM NO.: M-SNUB
- 8. Federal Mogul Co., " Comparison Compound E50-70 to TACO Inc./
Underwriters Laboratories UL 778 Requirements" National 0-Rings Technical Report, April 26, 1982.
- 9. Acushnet Co. Laboratory Report No. 4034 for Compound E-17018, page 2.
- 10. ITT Grinnel3 Co., " Radiation and Environmental Test of Seal and Fluid materials for Snubbers" Report No. PHD-5347-2R, Revision 1, July 23, 1977.
s
- 11. ITT Grinnell Co., " Radiation and Environmental Test of Seal Materials for Snubbers", Report No. PHD-7569-1, Revision 1, July 23, 1977.
- 12. ITT Grinnell Co., Engineering Parts List MB-5222-31, Revision 3, October 28, 1981.
- 13. ITT Grinnell Co., Engineering Parts List MB-5222-45, Revision 3, October 28, 1981.
- 14. EPRI, " Radiation Effects on Organic Materials in Nuclear Plants" Report EPRI NP-2129, November 1981. ,
- 15. ITT Grinnell Co. Drawing PHD-5222-5, PHD-5222-6, PHD-5222-7 and s_s PHD-5222-8.
32
s REFERENCES AND ADDITIONAL DATA PAGE 3 OF 3 PROGRAM NO.: M-SNUB
- 16. M.R. Lee, " Replacement Interval Calculation for the ITT Grinnell i
Hydraulic Snubber Seals and Hydraulic Fluid Based on the Thermal Degradation", NUTECH Calculation CPC-09-E.041, January 1983.
- 17. M.R. Lee, " Surface Temperature Analysis for the ITT Grinnell Hydraulic Snubbers", NUTECH Calculation CPC-09-E.040, January 1983.
- 18. Midland Plant, Units 1& 2 Environmental Qualification Report, Vol. I, Revision 1, December 1982.
s ( { l 33
l 1 I
)
GENERIC FIGURES F-1 and F-2: Reactor Building Temperature and Pressure vs Time after LOCA and MSLB Accidents Tl : Present Spray Chemistry i I l l l ,I l e 34 _ _ _ _ , . - - - - -- ,ew- , - - ----- f x 6 0
@ so - -
400 & T e j 70 - f---- y 8 / - 2 E 60 -
/ -
300 g E / \ 5 { 50 -
/ ,
N j 9 \ S S 40 N - 200 3 8 7 N 7
$ 30 -
\ TEMPERATURE 3 NOTE: INITIAL CONDITIONS -
14.7 psia \ 20 - 120F \ - 100 100 % RH b % 10 - %
% PRESSURE 0 7----
1 101 102 103 104 jos 30s s Tme After LOCA(seC) CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 PEACTOR BU!LDING PRESSURE AND TEVPERATURE VS TIVE AFTER LOCA EO Report Revision 1 pjgggg p_1 12/82
,. E C H:f 2-33
O ._ 500 1 3 80 - 400 $ E 70 - 6 ? (o 60 j g - 300
/ \ $
5 50 # \ s a / \ c dc ?
\ E p 40 -
- g -
200 y a N ti 5 30 \ ~
- /
l 5 N TEMPERATURE E 20 - / NOTE: INITIAL CONDITIONS \ - 100
$ / 1*.? P!!A j g 10 -/
120F g N
> 100% RH g PRESSURE Q f f f ffffff f f f f f f fit f f I f f f fit i f I f f f f t f" " P'" E = N . . . . --
0 1 101 102 103 10' 105 106 107 Time Af ter MSLB (SEC) CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 I REACTOR BUILDING PRESSURE AND TEVPERATL'RE VS TIVE AFTER USLB
\
EO Report Revision 1 FIGURE F-2 12182 l 36
, .,- _ _~ . -
l O EQUIPMENT QUALIFICATION REPORT MIDLAND PLANT UNITS 1 AND 2 T1 PRESENT SPRAY CHEMISTRY TIME POST-DBA 0 - 60 60 - 121 121 MINUTES -
. MINUTES MINUTES 30 DAYS l pH 4.5 - 4.6 increasing 7.0-7.5 13,000 - 13,000 - 13,000 -
Boric Acid 14,130 ppm 14,130 ppm 14,130 ppm Hydrazine Maintained at Maintained at Maintenance 50 - 110 ppm 50 - 110 ppm Stopped None Addition Maintain pH to Disodium Phosphate Begun to 7.0 - 7.5 Contrc! y. ' o 7.0 - 7.5 at 120 . Minutes l O 37
l ITT GRINNELL CORPORATION PIPE HANGER DIVISION RESEARCH, DEVELOPMENT AND ENGINEERING DEPARTMENT ( PHD-5222-lMBM TECHNICAL MANUAL FOR MAINTENANCE LARGE BORE HYDRAULIC SNUBBERS
- CONSUMER POWER CO.
MIDLAND PLANT UNITS 1& 2 JANUARY, 1979 { l REVISION 3 TECHNICAL MANUAL PHD-5222-lMEM PREPARED BY: M $DATE / [/ 9 /79 Engineer j f APPROVED BY: DATE / l f Sect. Mgr. APPROVED BYt DATE / /P d
<D Mgr.
i
! ept.
l C)
i l j . TECHNICAL MANUAL PHD-5222 -1MaM KEV. SHEET l i l l l .NO . DATE REV. Bl APPR. APPR. I 1 2/10/81 General Revision W N sd 0- y w- , l 2 5/14/81 General Revision D3 I / dh2/- .; 1' 3 7/21/81 Added Note After 7.12.1 g,* ~I ;
. and Added Section D N[ ,- r 7.12.2 ;
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*e
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i h i j . . l t i 4 Il t i i i 4 1 i i : i I !
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PlID-5222-lMBM REV 3 4
- i Section , Index Pg.
Maintenance Procedure 1.0 1 2.0 Teardown for Replacement of Seals in Miller Cylinder 3 ! Model 90 PHD-5222-SK 51 3.0 Teardown for Replacement of Seals in Miller Cylinders 11 Model 90 - Short Stroke *- PHD-5222-SK 51 4.0 Teardo+n for Replacement of Seals in Miller Cylinders 13 Model 52 - PHD-5222-SK 52 1 5.0 Teardown for Replacement of Seals in Miller Cylinders 14 Model 52 - Short Stroke - PHD-5222-SK 52 . 6.0 Teardown for Replacement of Seals in Miller Cylinders 15 Model 52 - Short Stroke - PHD-5222-SK 53 Assembly J1 7.0 Teardown Procedure Snubber Valves PHD-5222-SK 55 & 56 16
' 23 8.0 Torque Requirements - Cylinders 9.0 Teardown for Replacement of Seals - Oil-Rite Reservoirs 27 P11D-5222-SK 63 & SK 64 Fluid Requirements j (' io,o 29 11.0 Spare Parts List 30
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TABLS I 26 O e O ,
- ii -
.-- - _ _ _ - - - ___ _ . ~ _ _ _ . . . . . _ _ _ ____ _. . . . _ . _ _ _ _
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PHD-5222-lMBM Rev. 3 i a 1.0 MAINTENANCE PROCEDURE (14" - 20" HYDRAULIC SNUBBERS) [
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Maintenance of the Midland Plant Unit 1 & 2 snubbers should be conducted during every normal maintenance or shutdown period. Maintenance need only consist of the following: 1.1 Check cylinder head and cap, valves, fluid line connections and reservoir for signs of fluid leakage. If it is necessary ^ to remove valve covers, procedures contained in the installa-tion manual PHD-5222-2MBI should be followed. 1.2 If leakage is evident at any connections, check for proper tightness. (Ref; PHD-5222- SK 55 and SK 56) 1.2.1 Tighten fractional tube adapter (20) Cajon Fitting, to a torque of 18 ft. lbs. 1.2.2 Tighten fittings (21) and (23) in the following manner.
,- Back off fitting until it can be retightened by hand.
Retighten by hand. Tighten fitting by turning 1 1/4 turns. I 1.2.3 All other fittings shall be tightened in the following fashion. Back off fitting nut until it can be tightened i by hand. Secure nut hand tight and then tighten with a wrench by turning the fitting 1 1/4 turns. If this does not s, top leakage, replace fitting - refer to Section 7.0. 1*3 If leakage is evident at valve mounting surface, check torque _ of valve mounting bolts (19) drawing PHD-5222-SK 55 & 56. Torque on these bolts should be 35 ft. lbs. Torque bolts to this value if required. If this does not stop leakage, refer to Sections 7,0 and S.O for inspection or replacement of seals. 1.4 If leakage is evident at any of the following points refer to Section 7.0 for Valve Teardown.
.- -- . - - - _. . . ~ . ._ _- - -
PHD-5222-1MBM Rev. 3 1.4 Cont'd (Refer to PHD-5222-SK 55 and 56)
- a. Velocity adjustment screw (6) .
- b. Grifice valve stem (2)
' c. Between valve body (1) and retainer plate (12) 1.5 If leakage is evident at the valve adjustment screws (See Para. 1.4 a. and b.), any type of modification could result in unit's calibration being affected. (See Section 7.0 for Teardown). 1.6 If leakage is evident at any of the cylinder cocponents, refer . ^ to Section 2.0 thru 6.0 for replacement of seals or components. 1.7 Check the fluid level in the reservoir. If the level has dropped below the required level, replenish with GE Silicone Fluid SF-1154. This should be done now only if reservoir is not to be torn down. 1.8 If leakage is evident at any of the reservoir fittings, refer to Section 9.0 for replacement of seals oc adjustment. f 19 Clean exposed portion of piston rod using a non-petroleum based
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solvent
- and clean with a lint free cloth. After cleaning, wipe with a light coat of GE SF-1154 fluid.
1.10 The elastomeric seals used in the snubber assembly can be expected to last for approximately 5 years. Seals should be replaced after this period or at the shutdown preceeding the shutdown which will exceed 5 years. NOTE: Seals may remain on the shelf for up to five (5) years price to installation. Cnce installed and cc= pressed, seal life is five (5) years. i
- AVAILABLE NON PETRO BASED SOLVENTS THAT HAVE BEEN USED ARE ZYLEME, ALCOHOL, ETC.
l ~ PED-5222-lMBM Rev. 3 l l 2.0 TEARDOWN FOR REPLACEMENT OF SEALS IN MILLER CYLINDER MODEL 90 l s PHD-5222-SK 51 *
)
This Section covers the following snubbers: Dl, D3, ElB, E3B, F1, B5, B3, B6 & B4 2.1 Disconnect remote reservoir , feed tube (s)
- from reservoir connection assembly and remove cylinder assembly by reversing the installation procedure as described in PHD-5222-2MBI, to an
. area where all grime may be removed from external surfaces ,
utilizing a non-petroleum based solvent. Clean exposed threads on tie rods using a wire brush. (* PARALLEL UNITS ARE JOINED TO A COMMON RESERVOIR) 2.2 Units should now be moved to an area that is free of all dust and dirt for disassembly and replacement of seais. 2.3 During disassembly all units shall be cleaned using a non- {
. petroleum based solvent. All seals and wave spring (16) shall be discarded and replaced using new material. Seal and seal cavities shall be wet with clean fresh fluid: Type GE SF-ll54 silicone fluid.
2.4' With unit in horizontal position and valves in the top mounted position, remove valves as described in Section 7.0 from the cylinder body and set aside. Pour fluid out of cylinder into a suitable container and discard fluid. Stroking unit will speed this process, 2.5 With the unit still in a horizontal position, the~ torque on the clevis attac6 ment at the end of the piston rod should be broken. 2.6 Place unit in a (fixture) in the vertical position with piston rod (1) up. 2.7 Remove Clevis Attachment frca end of piston rod (1).
. 3_
PHD-5222-lMBM Rev. 3 i 2.8 Disassemble cylinder for seal or component replacement as follows: , ON 2.8.1 Removal of Rod Bushing Assembly 2.8.1.1 Remove rod wiper retainer (30) by first re-moving clip, (32) around the retainer screws (21) then washer (31) and then the rod wiper retainer
, (30).
2.8.1.2 Loosen and remove retainer screws (21) and
' washers (33) which hold rod bushing (8) and retainer plate (7) to cylinder head (3).
2 . 8 .1.'3 Lift retainer plate (7) from cylinder head (3) and remove existing parts from cylinder in the following sequence: (Ref; PHD-5222 SK 54): Rod Wiper (15) - to be discarded [ f- t Rod Bushing (8) Rod Seal (6) - to be discarded Rod Pressure Ring (12) Rod Wave Spring (16) - to be discarded Rod Seal Cage (13) 2.8.2 Disassembly of Cylinder 2.8.2.1 Loosen and remove tie rod nuts (9) at piston rod (1) end of cylinder. 2.8.2.2 Thread lifting eye rod into threaded holes l provided in cylinder head and attach a sling to eye rods. Using an overhead hoist, slowly lift cylinder head (3) above tie r.ods (11); tapping. on the underside of the head (3) with a rubber
- mallet, while lifting, will aid in freeing the 0-
_ c_
PED-5222-lMBM 30V. 3 1
- - 2.8.2.2 Cont'd
,- s head (3) from the cylinder tube (5) and tie rods (11).
2.8.2.3 Thread a male eye attachment into piston rod (1) end and again using a sling and hoist, slowly raise piston / piston rod (1) from cylinder r tube (5), using caution not to bind piston in cylinder tube (5) resulting in damaged com-ponents. Place assembly to one side, remove l eye attachments and disassemble piston parts
- as follows:
i 2.8.2.3.1 Remove piston retaining ring (18) from one side of piston (1). Using a needlenose plier or other suitable means, grasp piston retaining ring
/ (18) and remove from groove in piston (1).
2.8.2.3.2 Slide anti roll ring (17) from i piston (1) 2.8.2.3.3 Remove piston seal (2) from piston (1) and discard. I 2.8.2.3.4 Remove piston seal back-up ring i (10) from piston (1). 2.8.2.3.5 Proceed to remove seals on other side l in like manner. 2.8.2.3.6 If scored or severely worn, remove piston wear ring (19). Using snap ring pliers, or other expanding tool, t a
-5 r--- - , = , - - - - - - -_ ,, , _ _ _ _ _ _ _ _ __ , _ _ _ _ _ _ _ _ _ _
PHD-5222-1MBM Rev. 3 .
. 2.8.2.3.6 Cont'd
_ expand piston wear ring (19) and 1 l
,/ slide off piston (1).
2.8.2.4 Remove cylinder tube (5) from cylinder cap (4) .
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2.8.2.5 Remo.ve cylinder tie rods (11) using vise grips, or other suitable tools. Protect tie rods (11) by wrapping with protective tape, cloth or other methods that will insure tie rods (11) will not be severely scored. 2.8.2.6 Remove cylinder cap (4) from fixture
.2.8.2.7 Remove cylinder end seals (14) from 0-ring grooves on inner face of cylinder head (3) and cylinder cap (4). Discard seals.
2.8.2.8 Remove fill port plug (23) from cylinder head (' (3) and cylinder cap (4) and discard 0-rings (24). (~' i]\ 2.9 Cleaning 2.9.1 Clean all cylinder components using a non-petroleum base solvent and blow dry using oil-free air. 2.9.2 Wire brush all threads and clean thoroughly. 2.10 Inspection ! 2.10.1 Inspect pisten rod (1). If any nicks or scratches are evident on piston rod (1) the vendor shall be notified so that a re'presentative may be present to evaluate the severity of the damage and make recommendation to either rework or. replace piston rod. 2.10.2 Inspect additional components for wear that may result in damaged seals or hamper the operation of the units. Replace as required. 2.11 Reassembly of Cylinder
2
- PHD-5222-lMBM Rev. 3 1
2.11.1 Replacement of Seals 2.11.1.1 Wet all seals and seal cavities with hydraulic , fluid (use only type GE SF-ll54) prior to installing seals. 4 2.11.1.2 Insert new O-ring (24) in fill port and replace , 1
- fill port plug (23) 2.11.1.3 Insert new cylinder end seals (14) into 0-ring grooves in the inner-face cf the cylinder head (3) and cylinder cap (4) .
2.11.1.4 If removed, install a new piston wear ring (19) onto piston (1) . Using snap ring pliers or other expanding tool, expand piston wear ring l (19) and slide into place on piston (1). l 2.11.1.5 Replace piston seal parts (items 2-new, 10, 17, ( 18) l 2.11.1.5.1 Install piston seal back-up ring (10) on piston (1) so that is seats against shoulder. 2.11.1.5.2 Place a new piston seal (2) onto i piston (1) flat side of seal to piston seal back-up cing (10) 2.11.1.5.3 Install piston anti-roll ring (17) over piston (1) flat side away from piston seal (2). 2.11.1.5.4 Install piston retaining ring (18) I onto piston (1) using needle nose pliers to expand and ensuring that i retaining ring (18) sea.ts into groove in piston (1). - 9 y.w- - - . ~ - - - - - - - -, , - - - - -. - .--- - - - - - - - - -- -
PHD-5222-lM3M Rev. 3 ll
) . 2.11.2 Assembly of Components 2.11.2.1 place cylinder cap (4) back into fixture. Single
( 5 lug attachment down.
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2.11.2.2 Reinstall tie rods (11) 2.11.2.3 Place cylinder tube (5) into groove in cylinder cap (4) . Coat tube with a thin layer of GE SF-1154 hydraulic fluid. 2.11.2.4 Next place a tapered starting ring or piston ring compressor over piston seal (2) at the end opposite piston rod (1). 2.11.2.5 Install eye attachment into piston rod (1). Using i a sling and overhead hoist, raise piston / piston rod assembly (1) by use of the lifting eye attach-ment to a position directly above cylinder tube (5). ( 2.11.2.6 Slowly lower pi,ston/ piston rod assembly (1) into cylinder tube (5). When a point is reached where , tapered ring or ring compressor interfere, remove from piston (1) and continue lowering assembly into cylinder tube (5). Taking precautions to insure piston assembly (1) does not bind, continue lowering until piston (1) bottoms against cylinder cap (4). 2.11.2.7 Remove'lif ting eye attachment and sling. 2.11.2.8 Using sling and hoist, lift cylinder head (3) over piston rod (1) align cylinder head (3) to mate tie rod holes to tie rods (11). Insure that snubber valve ports on cylinder head (3) and cylinder cap (4) are on the same side of the unit.
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_ s_ S y _ . . _ , _ _ . - _ , - . _ _ _ _ _ _
I PHD-5222-lMBM Rev.3 2.11.2.8 Cont'd
'~N Lower cylinder head (4) onto the unit so that \~~ the groove on the inner face of the cylinder head mates to cylinder tube (5).
2.11.2.9 Reinstall tie rod nuts (9), applying molycote to tie rod threads. 2.11.3 Replacement..of Rod Bushing Assembly 2.11.3.1 Place rod seal cage (13) over piston rod (1) and into counterbore in cylinder head (3). 2.11.3.2 Install new rod wave spring (16) over piston rod (1) and seat into rod seal cage (13). 2.11.3.3 Place rod pressure ring (12) over piston rod (1) so that its flat side bears against rod wave spring (16)-. 2.11.3.4 Install new rod seal (6) into seal cavity of O. bushing (3) making sure that the rod seal (6) is properly seated. Place bushing (8) over piston rod (1) and into bushing cavity in cylinder head (3), rod seal (6) down. 2.11.3.5 . Place retainer plate (7) over piston rod (1). Align retainer plate (7) with tapped holes in cylinder head (3). 2.11.3.6 Install washer (33).and re;ainer screw (21) and f torque in accordance with Section 8.0. 2.11.3.7 Install new rod wiper (15) over piston rod, insuring that the wiper (15) is secured behind the re- ! taining lip provided in the rod bushing (8) . 2.11.3.8 Install wiper rod retainer over piston rod to keep l - the rod wiper in place. _g_ (
PHD-5222-lMBM Rev. 3 l 2.11.4 Remove unit from the fixture and place.in a horizontal position. I e 2.11.5 Torque cylinder tie rod nuts (9) in accordance with Section 8.0 2.11.6 Attach clevis attachment to end of piston rod (1) and l torque to a value of 6,000 f t.lbs. ll 4 4 t e 'l (.. ; l l t l c e 9 I
- e v-yc--1pw re- 'a y
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mm -- - - - - , -.--w w,, , .,---. . . - - -
l PHD-5222-1MBM Rev. 3 TEARDOWN FOR REPLACEMENT OF SEALS IN MILLER CYLINDER MODEL 90 - 3.0 [ SHORT STROKE - PHD-5222-SK 51 This section covers the following snubbers: D4, II, I2, ElA,' E3A, F2, G1, G2, J2 1 3.1 Accomplish steps 2.1 thru 2.7, Section 2.0 3.2 Disassemble cylinder for seal or component replacement as follows: l 3.2.1 Removal of Rod Bushing Assembly 3.2.1.1 Mount adapter plate with 0-ring over valve port in cylinder cap (4). Install four mounting bolts and secure. 3.2.1.2 Remove rod wiper retainer (3) by first removing clip (32) around the retainer screws (21) then ' washer (31) and then the rod wiper retainer (30). 3.2.1.3 Using an air hose provide 80 psi filtered _a,ir. to g
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[ cylinder at the fill port in the cylinder cap (4). This pressure will' provide means to fully extend piston rod (1). Maintaining pressure now remove retaining ring (22) from piston rod (1). 3.2.1.4 Decrease air pressure so that the piston rod (1) now retracts and bottoms out against cylinder cap (4) . 1 3.2.1.5 Loosen and remove retainer screws (21) and washers (33) l and lift retaine?' plate (7) from cylinder head (3) . Remove existing parts from cylinder head (3) in the following sequence as shown on drawing PHD-t 5222-11 SK 54: ;
; Rod Wiper (15) - discard Bushing (8)
- 11 -
4
,,a . - - - . - . , - - - - , , - -- . . , - , , , , . _ , , - , ,,_,,,,,,,,,,,,,,,7,,,,,,,a,,
PED-5222-lMBM Rev. 3 3.2.1.5 Cont'd f_
s Rod Seal (6) - discard , \- Rod Pressure Ring (12)
Rod Wave Spring (16) - discard Rod Seal Cage (13) 3.3 Accomplish Steps 2.8.2 thru 2.11.2.9 Section 2.0 3.4 Replacemen,t of Rod Bushing Assembly 3.4.1 Provide 80 psi air to cylinder cap (4) to fully extend , piston rod. Maintain pressure while installing rod seal parts. 3.4.2 Accomplish step 2.11.3, Section 2.0 e 3.4.3 Reinstall retainer ring (22) in groove on piston rod (1) 3.4.4 Release air pressure and allow retainer ring (22) to come to rest against rod bushing (8). f., s, 3.5 Torque cylinder tie rod nuts (9) in accordance with Section l 8.0 1 3.6 Remove unit from the fixture and place in a horizontal position. 3.7 Attach clevis attachment to end of piston rod' (1) and torque to a value of 6,000 ft. lbs. l l
PHD-5222-1MBM Rev. 3 4.0 TEARDOWN FOR REPLACEMENT OF SEALS Ili MILLER CYLINDER MODEL 52
'~N PHD-5222 ',K 52 This Section covers snubbers ,B1 & B2 4.1 Accomplish Steps-2.1 thru 2.3, Section 2.0 4.2 With cylinder in horizontal position, remove extension piece.
4.3 Accomplish Steps 2.4 thru 2.8.1.3, Section 2.0 4.4 Removal of External Bearing 4.4.1 Loosen and remove retainer screws (26) and washers (33). 4.4.2 Lift external bearing (25) from cavity in cylinder head (3) 4.4.3 Remove 'and discard external bearing seal (27) 4.5 Accomplish Steps 2.3.2 thru 2.11.2.9, Section 2.0
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4.6 Replacement of External Bearing 4.6.1 Install new external bearing seal (27) over hub on rear I
of external bearing (25) l 4.6.2 Install external bearing (25) by placing external bearing, i
seal down, into counterbore in cylinder head (3). 4.6.3 Install retainer screws (26) and washers (33) and torque in accordance with Section 8.0. 4.7 Accomplish Steps 2.11.3 thru 2.11.6, Section 2.0 4.8 Attach extension piece torquing nuts and bolts in accordance
. with Section 8.0.
l O P
-,--n
. ._ _ ..- .- .-- ._ =__- -
- PED-5222-lMBM Rev. 3 5.0 TEARDOWN FOR REPLACEMENT OF SEALS IN MILLER CYLINDER MODEL 52 SHORT
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STROKE, PHD-5222-SK 52 This section covers the following snubbers: 1 i C1, C2, D2, E2, E4, Al, A2, El & H2 ; t 5.1 Refer to Section 4.0 for the sequence of disassembly and assembly of these particular units. 5.2 The only variation will exists in the removal and replacement of the rod seal parts. Air pressure will again be required for extending and maintaining piston rod position. Refer to Section 3.0,. 3.2 and 3.4 for this information. . r O l . 4
- 14 -
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PHD-5222-1MBM Rev. 3 l I 6.0 TEARDOWN FOR REPLACEMENT OF SEALS IN MILLER CYLINDER MODEL 52 SHORT
~ STROKE, PHD-5222-SK 53 Assembly # J1 6.1 These cylinders have the same basic structural characteristics, and are to be worked the same as those in Section 5.0, with the exception of the cylinder tie rods (11).
6.2 As may be noted on procedural drawing PHD-5222-SK 53 the tie rods (11) extend through the cylinder cap (4) and extension Pie'c e (28), threading into the pivot lug attachment (29) rather than threading into the cylinder cap (4) as on other units. 6.3 The only additional precautionary measure to be taken on this unit is during reassembly: 6.3.1 Prior to reassembly as stated in Section 5.0, install the pivot lug attachment (29) into the fixture. d 0 I 6.3.2 Lift extension piece (28) into place on pivot lug (29) ( ,, and align tie rod holes. Insure proper orientation of pivot lug (29) to extension piece (28). 6.3.3 Lift cylinder cap (4) into place on extension piece (29) assuring correct location for the valve mounting port in relation to pivot lug (29) and extension piece (28).
. 6.3.4 Reassemble remaining components as stated in Section 5.0.
o O 15 -
s PHD-5222-lMBM Rev. 7.0 TEARDOWN PROCEDURE FOR THE SNUBBER VALVE /PHD-5222-SK 55 & SK 56 7.1 Drain reservoir as described in Section 9.0 . 7.2 (Ref; PHD-5222-SK 55) Remove reservoir connection assembly from the valve connection tubing tee (24) by backing oft fitting nut (23). Free reservoir connection assembly tee (24) and plug or cap tee (24). 7.3 During disassembly all valve fitting, tubing and components exceot seals shall be cleaned using a non-petroleum based solvent and blown dry using clean oil free air. All seals used shall be discarded. New seals and seal cavities shall be wet with clean fresh GE silicone fluid #SF-1154 just prior to installation. 7.4 Removal of Valve from Cylinder 7.4.1 Remove tamperproof cover from valve body (1) as described in procedure PHD-5222-2MBI r I 7.5 Loosen fitting nut (21) located at valve on cap end of cylinder. s_j 7.6 Loosen fitting nut (21) located at valve on head end of cylinder. 7.7 Loosen and remove valve mounting bolts (18) at valve located at cylinder cap. 7.8 Lif t valve body (1) free of cylinder cap and connecting tube (22) 7.9 Loosen and remove valve mounting bolt (18) at valve located at cylinder head. 7.10 Making sure connecting tube (consisting of 21, 22, 23 and 24) does not bend or hang, lift valve body (1) free of cylinder head and connecting tube (22). 7.11 Drain snubber valve bodies of fluid. Drain connecting tube (21, 22, 23 and 24) of fluid and place to one side. 7.12 Seal and/or Component Replacement: The following disassembly / assembly sequence should be used for replacement of elastomeric seals or components as required.
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Phb 5222-1MSM Rsv. 3 7.12.1 Disassembly of Valve
, !!OTE: All parts to be reused should be marked and kept with N ,, the valve from which removed. Parts are not to be interchanged.
7.12.1.1 Removal of fittings 7.12.1.1.1 Loosen and remove fractional tube connector (20) 7.12.1.1.2 Remove and discard O', ring (19) 7 12.1.2 Place valve on table with adjustment screws up. 7.12.1.3 Using a screwdriver hold orifice valve stem (2) and loosen jam nut (3). 7.12.1.4 Remove orifice valve stem (2) from valve body (1). The following components shall be removed from the orifice valve stem: f' a. Jam nut (3)
- b. Washer (4)
- c. Thread seal (5), Discard 7.12.1.5 Using an allen wrench secure velocity adjustment screw (6) and loosen jam nut (7).
7.12.1.6 Remove velocity adjustment screw (6) from valve l body (1). The following components shall be re=oved from the velocity screw (6):
- a. Jam Nut (7)
- b. Washer (8)
- c. Thr.ead seal (9), Discard 7.12.1.7 Invert valve body (1) 7.12.1.8 Remove and discard O' ring (10) t 7.12.1.9 Loosen and remove retainer plate screws (11).
Lift retainer plate (12) from valve body. Cs
HD-5222-1MSM Rov. 3 7.12.1.10 The following components shall then be removed in sequence from valve body (1): ,
- a. O' ring (13)
- b. Valve seat disc (14) i
- c. Poppet valve (15)
- d. Spring (16)
- e. Spring Plunger (17) 7.12.1.11 Repeat Steps 7.12.1.1 thru 7.12.1.10 for the second valve 7.12.2 Cleaning of Valve 7.12.2.1 ~The valve body should be thoroughly rinsed using pressurized filtered Freon TF solvent. All ports, I cavities, blind holes, etc. must be flushed of any particles accumulated during use. Filtered f
-~s air should then be blown through all areas.
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l 7.12.2.2 All parts to be reused in valve should be thoroughly rinsed using pressurized filtered Freon TF solvent then blown dry with filtered air. 7.12.3 Assembly of Valve (NOTE: All Seals and Mating Valve I Surfaces are to be Wet with GE SF-1154 Silicone Fluid Before Installation) l 7.12.3.1 Place the valve block (1) inverted on the l. bench with large hole facing up. 7.12.3.2 Install plunger (17) into the body (1) with the flat side of the plunger (17) facing down. 7.12.3.3 Install spring (16) into the body (1) so it seats over the short sten on the plunger (17).
PHD-5222-1M3M Rev. 3 7.12.3.4 Install valve poppet (15) into the body with l'
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hex and facing down and so the short stem on the poppet seats in the spring (16). . 7.12.3.5 Slide the valve seat disc (14) over-the long - l stem.on the poppet and seat the disc.(14) in - 1 the valve body (1). (NOTE: 'The Chamfer Must
. Face the Poppet). !
! 7.12.3.6 Install retaining plate (12) aw follows:
, 7.12.3.6.1 Set -125 0' ring (13) in place on 1
4 top of the valve seat disc (14).
- '7.12.3.6.2 Push ths valve seat disc down (14) until firmly seated.
7.12.3.6.3 Using a small rod, hold the seat disk (14) down against the poppet ( l }
/s (15) stem and plate the retaining s
plate (12) in position, aligning f the holes with the threaded holes in the valve body. NOTE: The retaining plate (12) should be placed directly on the valve body (1) during this operation, with
- minimum sliding between the two.
Sliding can affect the, proper , seating of the O' ring. 7 .1'2 . 3 . 6 . 4 While holding the retaining plate (12) firnly, release the seat disc (14). 7.12.3.6.5 Install the two retaining p' late screws (11) and tighten. 1-
PHD-5222-1M3M Rev. 3 7.12.3.6.5 Cont'd NOTE: The remaining O' ring (10)
/}' will be installed when the valve is
, assembled to cylinder.
7.12.3.7 Invert the assembly so that it sits on the bench with the retaining plate (10) at the bottom. 7.12.3.8 Install the locking velocity screw (6) as follows: 7.12.3.8.1 Screw the 1/4 thread seal (9) on the socket end of the locking I velocity screw (6-) so that it is approximately 1/4 in. from the socket end of the screw. 7.12.3.8.2 Slide the washer (8) over the (- socket end of the screw (6) until it is against the thread seal (9). 7.12.3.8.3 Screw the hex nut (7) on the socget end of screw (6) until the socket end of the screw (6) extends 1/8" beyond the edge of the hex nut (7). 7.12.3.8.4 While holding the hex nut (7) fixed on the screw (6), screw the' thread seal (9) tcward the hex nut (7) until snug against the washer (8) and hex nut (7). 7.12.3.8.5 Screw the velocity locking screw (6)' assembly into the body (1) in the
,q threaded hole, over the plunger (17) i i
\,,/ . and spring assembly, until snug.
. . ~ -- ,
?HD-5222-1MBM Rev. 3 7.12.3.8.6 While holding the screw (6) with an allen wrench, tighten the hex nut (7) an additional 1/4 turn.
7.12.3.9 Install the orifice sten screw (2) as follows: 7.12.3.9.1 Screw the 1/4 thread seal (5) over - t'he tapered end of the screw to approximately 3/4 in, from the slotted end. 7.12.3.9.2 Fit the washer (4) over the slotted
~
end of the screw (2) until snug against the thread seal (5). 7.12.3.9.3 Screw the hex nut (3) on the sletted end of the screw,(2) until snug against the washer (4) and thread
/g seal (5).
(N-) 7.12.3.9.4 Screw the orifice stem screw (2) assembly into the remaining threaded hole in the valve body (1) until snug. 7.12.3.9.5 While holding the screw (2) with a screwdriver, tighten the hex nut (3) an additional 1/4 turn with a wrench. 7.12.3.10 Repeat Step 7.12.3 for the second snubber valve. 7.13 Replacement of Fitting 7.13.1 Install new 0' ring (19) onto fractional tube adapter (20) and thread into valve port on side of valve. 7.13.2 Install tubing (22) onto fractional tube adapter (20) and engage fitting nut (21). Snug fitting nut (21) hand tight.
\-s
- 2: -
, ., - - , _ _ - ---g -- - - -
i , PHD-5222-1MBM Rev. 3 i 7.13.3 Repeat Steps 7.13.1 and 7.13.2 for second snubber valve. Disassembly / Assembly Procedure Connecting Tubing , ON714 7.14.1 Remove the plus from the tee (24) on valve connection tubing. 7;14.2 Connect reservoir connection as'sembly to valve connection tubing at the tee (24). , 7 15 Mounting Valve on cylinders 7.15.1 Install O' rings (10) into o' ring grooves in valve retainer
- plates (12). Mount one valve body (1) on the cap end of I cylinder so that the valve port and' cap mounting port are aligned, and the fractional tube adapter (20) are facing in the directi'on of the cylinder head.
- 7.15.2 Install and engage valve mounting bolts (18) loosely.
7.15.3 Place additional valve body (1) on head end of cylinder. 7.15.4 Install and* engage valve mounting bolts loosely. i 7.15.5 Torque mounting bolts (18) on both valve bodies to 35 ft/lbs.
\ 7.15.6 Tighten fractional tube adapters (20) at both valve connections.
7.15.7 Carefully check all tubing connections for proper engagement ! and alignment. Once this is completed, tighten all fitting l nuts (Ref; Section 1.0) 7.16 The above procedure may be used for installation of the top mounted valve connection assembly (SK. PHD-5222-SK 56). i 1 O. , t
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PHD-5222-1MBM Rev. 3 l 8.0 TORQUE REQUIREMENTS - CYLINDERS s 6.1 Torque - Cylinder Tie Rods s_- 8.1.1 Attached drawings in this section depict the various bolt patterns for the cylinders on this project. PHD-5222 SK 57 - quantity of 20 tie rods l PHD-5222 SK 58 - quantity of 24 tie rods
- PHD-5222 SK 59 - quantity of 28 tie rods Each sketch shows nu=bered tie rod locations which is the sequence in which each tie rod shall be snugged down or torqued.
8.1.2 Check to insure that molycote has been applied to all tie rod threads before installation. 8.1.3 Method - Turn of The Nut 8.1.3.1 Pre-torque tie rod nuts to the value specified j
N in Table 1 in the order shown on one of the above drawings.
8.1.3.2 Mark a point on both the cylinder head and tie rod nut where they join (see detail SK 57). Call mark on head point 1 and mark on tie rod nut point 2. , 8.1.3.3. Using available angle measuring device mark on head a third and fourth point counterclock-wise from point 1 at 50% and 100% of the degrees shown on Table 1 8.1.3.4 In' sert allen wrench into socket head nuts and rotate nut clockwise until point 2 is directly in line with point 3. 3.1.3.5 Continue this process in sequence en chart until O,
\s, all tie red nuts have been tightened to point 3.
l
PHD-5222-1MBM Rev. 3 8.1.3.6 Repeat Steps 8.1.3.4 and 8.1.3.5 aligning point 2 with point 4 until all tie rod nuts . are tightened.
'8 . 2 Torque Circular Retainer 8.2.1 PHD-5222 SK 60'& 61 contained in this section depict the various bolt patterns for the cylinders on this pro. ject.
PHD-5222-SK 60 - quantity of 16 retainer screws PHD-5222-SK 61 - quantity of 20 retainer screws Each sketch shows numbered retainer screws locations which is the sequence in which each retainer screw shall be snugged down or torqued. These values are i shown on Table 1.
,. 8.2.2 Tighten twing the methods of Step 8.1.3.
( 8.3 Torque External Bearing
,) 8.3.1 PHD-5222 SK 62 contained in this section depicts the bolt patterns for the cylinders on this project.
The drawing shows numbered retainer screws locations which is the sequence that each retainer screw shall be snugged down or torqued. These values are shown on Table 1. 8.3.2 Tighten using the methods of Step 8.1.3. 8.4 Torque Extension Piece Nuts and Bolts 8.4.1 Using a torque wrench snug down and torque extension piece nuts'and bolts in same sequence as that shown for tie rods (ref. Para. 8.1.1). - 8.4.2 Snug all nuts and bolts initially to 100 ft. lbs. 8.4.3 Torque all nuts and bolts initially to 1/3 values shown belou in Step 8.4.5 in correct sequence.
- - 24 -
, - . - - - - - , - - - , - - - , - , - - --,--w- - , . - - - - .
PHD-5222-1M3M g,y, 3 1 8.4.4 Repeat torquing in sequence to 2/3 value and then to full value.
+
8.4.5 Torque values for extension piece nuts and bolts for units based on pivot pin sizes are as follows: Pivot Pin Dia.'(in.) , Torcue (Ft. Lbs.) , 4.5 984-5.0 1038 6.0 1061 . 9.44 1061 NOTE: Bolts and nuts may be retorqued and reused at any time unless upon inspection, a defect in either is determined. O o 1 i 4 J 2 7 . l .
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s T A\ I Il. Tie Rod
- Circular Retainer External Bearity; 1 1/4-12 Thread 5/16-24 Thread (12) 1/2-20 Thread TURN DORE NO. -
TOROUE OF NUT NO. TOROUE na TOROUE un CYL. l 11 0 . MODEL DIA. TIE RODS (PT. LB) (DEGREES) SCREWS (FT. LB) (FT. LB) 52 14 20 665 197 16 20 80 C1 20 665 197 16 20 80 C2 52 14 D1, D3 90 14 20 665 .. 122 16 20 --
\ .
D4 90 14 20 665 g 124 16 20 -- 665 I 16 20 -- 11, 12 90 14 20 295 . 16 20 665 151 16 20 80 D2 52 ' 16 24 695 .226 16 20 -- E1A, E3A 90 I 16' 24 695 226 16 20 -- Elu, E3B 90 24 695 224 16 20 80 E2 52 16 16 24 695 224 16 20 63 E4 52 F1 90 16 24 695 156 16 20 -- F2 90 16 24 695 137 16 20 -- G1, G2 90 16 28 715 165 20 20 -- 18 28 715 168 16 20 80 A1 52 A2 52 18 28 715 168 16 20 80 90 18 28 715 ,( ., 149 16 20 -- B5 52 18 24 695 327 16 20 80
.11
.12 90 18 24 695 137 16 20 --
20 28 715 169 16 20 80 ,
, B1 52 B2 52 20 28 715 168 16 . 20 80 5.
n3, 06 90 20 28 , 715 170 16 20 -- g B4 90 20 28 715 156 16 20 -- C' 20 28 715 209 16 20 80 h 11 1 52 52 20 28 715 209 16 20 80 E-11 2
# TIE R0D NUT PilET0 ROUE - 100.FT. LDS (ALL CYLINDERS) $
## PRETOR 00E TO 50% OF TOROUE VALUES LISTED ABOVE
3 PHD-5222-1MEM Rev. 90 TEARDCNN FOR REPLACEMENT OF SEALS, OIL-RITE RESERVOIRS PHD-5222-SK 63 & 64 j This procedure covers reservoirs of 3 gal. capacity (PHD-5222- [N-
\
91 S 63) and 5 and 10 gal, capacity (PSD-5222-SE 64) which are
. I essentially identical except for site and mounting brackets.
~
9.2 During disassembly all fittings and components except seals shall be cleaned using a non-petroleum based solvent and blown dry using clean, oil free air. All seals shall be discarded. New seals and seal cavities shall be wet with clean, fresh G.E. silicone fluid # SF-1154 just prior to installation. 9.3 Drain reservoir into suitable container by removing pipe plug (7) from drain adapter (4) . 9.4 Remove steel tubing from 1" NPT male connector (11) by backing off fitting nut (12). Free and secure steel tubing.
< 9.5 Remove 1" NPT male connector (11) .
t l 9.6 Remove cover hold down screws (16")' ~ and remove ;over (3) . l
&(N 97 Secure drain adapter (4) on inside of reservoir and remove jam nut (6) . This frees 3' gal capacity reservoir from mounting bracket (2) . Drain reservoir of any remaining fluid.
. Secure mounting bolt and jam nut and discard O' ring (5) .
NOTE: The following steps will be accomplished with 3 gal. capacity reservoir removed from counting bracket. i 9.8 Secure filter adapter (14) unscrew filter body (20) and remove it and filter i l (18) from filter adapter (14). Remove jam nut (13). Discard O'rins (15). l 9.9 Secure tube adapter (8) and remove jam nut (10) . This' frees 5 and 10 gal. capacity reservoirs from =ounting bracket (2) . Drain reservoir of any remaining fluid. Secure mounting l bolt and jam nut and discard O' ring (9) . i 9.10 Remove two sight glass counting nuts (17) and remove sight
\m- glass assembly (19) . -
l PRD-5222-1MBM Rev. 3 9.11 Disassemble sight glass (ref. Detail PHD-5222-SK 63) as follows:
~
9 11.1 Unscrew two mounting studs (39) from sight glass body (32). Remove O' rings (33) and discard. 9 11.2 Remove sight glass cap (34). Remove O' ring (38) and discard.
~
9.11.3 Remove securing screw (35). 9.11.4 Gently pressing inward and upward on sight glass (36) remove it and tap 0' ring (37) fecm sight glass body (32). Discard O' ring. 9.11.5 Remove,1cwer O' ring (37) and discard. 9.12 Clean all components and prepare for reassembly as indicated in 9 2. 9.13 Assembly of sight glass can be accomplished in reverse order
~
l ( of disassembly with the following noted: () 9.13.1 Assure that lower and upper sight glass O' rings (37) are properly seated. 9 13.2 Mounting stud O' rings (33) should be carefully assembled over threads leaving approximately 1/4 inch of thread to be threaded into sight glass body. 9.14 Assembly of reservoir can be accomplished in reverse order of assembly =aking proper assembly to mounting brackets when required. 5 0
PHD-5222-1MSM Rev. 3 10.0 FLUID REQUIREMENTS PER SNUBBER Snubber Fluid Recuired (Gallons) ! A1 10.38 A2 10.38 4 31 8.45 l B2 , 9.53 i B3 , 8.37 B4 8.65 B5 8.08 B6 8.37 C1 15.04 C2 15.02 D1 7.21 D2 11.73 D3 7.21 D4 9 19 E1A 17,78 E1B 17.78 E2 17.87 fI l E3A E3B 17.78 17.78 E4 17.87 F1 10.71 F2 10.23
~
G1 12.42 I G2 12.42 H1 16.80 4 H2 16.80 Il 22 90 I2 22.90 J1 12.74 J2 9.92 a i i 3 L
.-,en , y -- - -g, , g_,. _ , - , , . . , _ ,--n, . . _ . - , . _ . , , , _ , , _ _ , , . , , , , , . _ . . , _ _ , _ . , . _ . . . - - , , _ _ . . _ _ _ - - , , - . , , , . - - - ,
PHD-5222-1MBM Rav. 3 11.0 SPARE PARTS CTY./SIiUBBER - 1 Cylinder Seal Kit Including: j 2 Piston Seals 1 Rod Seal 1 Rod Wiper
.2 -
Cylinder End Seals 1 Rod Bushing 1 Rod Seal Cage 1 Rod.PressureRing 1 Rod Wave Spring 1 Piston Wear Ring 16 Retainer Screws [ THE A30VE AS SHOWN ON MILLER DWG.# D5689H SHTS. 1 & 2 1 Spherical Bearing 4.5 I.D. SKF GEZ-408ES 1 Spherical Bearing 5.0 I.D. SKF GEZ-500ES 1 Spherical Bearing 6.0 I.D. SKF GEZ-600ES 1 Valve Seal Kit Including: 4 Thread Seals -1/4 6 0' ring (2/ Valve; 1/ Port plate) -125 2 0' ring (nale connector) -916 2 0' ring (fill pcrts) -908 2 0' ring (plug valve) -211 1 0' ring'(plug valve) -113 3 Reservoir Assenbly Seal Kit ((1) 3 Gal., (1) 5 Gal., (1) 10 Gal.) 6 0' ring (Mtg. Studs) -112 0 3 0' ring (Cap) -015 6 O' ring (Sight Glass Oauge) -109
, 30 -
PED-5222-tMEM Rev. 3 j
. 11.0 SPARE PARTS (Cont'd) 3 0' ring (Outlet Adapter) -132 I 6 0' ring (Drain and Filter Adapter) -120 l
10 si 6ht Glass Assemblies O 1 1 t i . l l s O M
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. LIST OF PARTS ITT Grinnell Corporation .
SCAL.E: E.P.L , PIPE HANGER DIVISION i
. 5
- SUPERSEDES RESEARCH. DEVELOPMENT & ENGINEERING MAT *L SPEC. PROVIDENCE. R.t. 4 FAB. SPEC. TOLERANCE DATE 'lOIOUING SEQLENCE ll' A
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d'F. At the other end of the scale, EPDM compositions provide excallent resistance to mechanical stresses and deformation at elevated temperatures. Tests run on a typical medium voltage insu - lation compound (Table IV) show that modulus is essentially un-affected at temperatures up to 300*F. , reflecting the registance of EPDM compositions to thermal softening. Tensile strength and alongation are reduced as temperature is increased from 75 to 300*F., but are superior to the values obtained with other types
- of insulation, particularly at 300*F.
TABLE IV TENSILE PROPERTIES AT ELEVATED TEMPEPATURES Test Temoerature, 'F. Physical Properties 75* 158' 306*- 250 200 210 100% Modulus, psi 1000 680 400 Tensile Strength, psi 170 Elongation at Dreak, t 310 250 Flexibility and Handling i ()M; insulation is inherently very flexible. The extent to which ( edis carries over to. the finished cable is, of course, influenced by construction features. Where the insulation wall is heavy relative to conductor size, frequently the case in medium voltage cable, EPDM insulation contributes greatly to cable flexibility. This is of particular importance when splicing and terminating in rastricted quarters, such as in manholes. , Ozone Resistance EPDM compositions are, for all practical purposes, completely r impervious to ozone, Ozone resistance is inherent in ethylene-propylene rubbers so that protective waxes, antiozonants, or ! special compounding are not required to achieve this property.* Typical insulations based on EPDM show no sign of cracking when exposed to an ozone concentration of 0.03 percent by volume for ' 100 hours, using the procedure specified in ASTM D-470. Radiation Resistance The increasing number of nuclear generating facilities in recent
- years has focused attention on the need for elastomeric components I
i with excellent radiation resistance. _ Ethylene crooylene rubbers O
__are particularly resistant to the deteriorating effec _ts-of_ high energy red 15 tion.
~
Results of a series of tests conducted in our laboratories are' summarized in Table V. Vulcanized slabs, 75 mils thick, were subjected to several dosage levels of beta radiation using a General Electric Resonant Transformer. Stress-strain properties measured in accordance with ASTM D-412 show that the EPDM insulation under test retained approximately 90% of its original tensile. strength and over 40% of its original elongation after exposure to 5.5 x 107 rads of beta radiation. While elonga-tion _showed a further decrease as exposure time was lengthened, the EPDM insulation still remained quite flexible even after a _ total dosage of 100 rads. TABLE V INSULATION OF NORDELS RESISTANCE TO RADIATION f Retention of Original Procerties, % Exposure Tensile Elongation 5.5 x 107 rads 91 42 1.1 x 108 rads 99 24 5.5 x 107 rads plus 87 47 7 days aging in 150*C. oven plus 7 days in 60 psi steam Original Tensile Strength, 1030 psi Original Elongation, 550% Radiation Conditions: Vulcanized slabs were placed 30 cm. from radiation source; beam current - 0.5 railliamps, acceleration potential - 2 megavolts, dosage rate - 8.5 x 104 rads /sec. Blodgett and Fisher, in their paper on the effects of gamma radi-ation on cable coverings, point out that the total radiation dosage _ abs.qr_b.ed._by_a. .qable within t_he contaiDCBtLt_Ar_C.a_Qf__A_ thermal. nucle.pr reactor micht aceroach_5_x 107 rads ,_ a.a s_uming_.a_ggne. rat.ox
- 14 #a of_40 yearsil). The retention of tensile properties after exposure to gamma radiation reported by Blodgett and Fisher is reasonably close to that reported here using beta radiation.
Compositions based on EPDM would algo be expected to surviva abnormal bursts of ener'gy from a thermal nuclear racctor concaiv-ably involving exposure to a combination of radiation, steam and dry heat. ,In a laboratory test, an EPDM medium voltace insulation e ~qound retained more than _80% of its original tensile strenotha . incre than.40%_of its_ original.. elongation after.exp.osure to , ( 7 rads of beta radiation, 7 days oven _acinc at
._L, 8,nce,,_of 5 5 x 10
.).50*C..,.And'7 days in 60 psi steam.
Electrically Stable Insulations For Lov Voltage Aeolications where dielectric loss is not a prime consideration, such as is the ~ caso for low voltage insulation, lower cost EPDM insulations are feasible. This is accom'plished primarily by greater extension with oil and filler, and the use of untreated clay in combination with a silane coupling agent. Such insulations possess electrical properties adequate for use in both wet and dry locations at volt-ages up to at least 5 KV. The peroxide curing system offers several advantages. Among these are low dielectric loss, ele'ctrical stability in water, retention of physical properties after aging at temoeratures as high as 300*F., and resistance to deformation during the jacketing opera-tion. EPDM insulations containing high levels of oil and filler can be peroxide cured without difficulty. In addition, such insulations not only possess excellent original properties, but also show
/"'Ngle change on aging. These characteristics are attributable to l
) inherent properties of EPDM and to the permanence of the low-(veriatility
- paraf finic oils.
The physical and electrical properties of two typical, extended insulation compounds are shown in Tables VI and VII. Both possess good original physical and electrical properties, good resistance to heat degradation, and excellent stability in 75'C. water. Of particular interest is the favorable comparison of physical and electrical properties for Compound B vs. Compound A, even though Compound B is much more highly extended with filler and oil. Compound B, with a pound-volume cost of $.183 is 11% lower in cost than Compound A, and 30% lower than the compound shown in Table I. , i n e
-e
?
Tlif. E!'I'UCTS OF RAl)I ATION, Ill:A T , ANL) STEAM ON NOstDEll EPDM O - l
" FIGURF, 1 1
k,200- A c I#' s LD- [ 800* x
& 600-LLI
$ 400-
- 200-O y FIGURE 2 500- .
, e 4-2
- 9. 300- p e
}200-O d100-KEY A = ORIGINAL 7 RADS B = AFTER 5.5 x 10 7
C = AFTER 5.5 x 10 RADS + 7 DAYS AGING @ 150'C.
\
D = AFTER 5.5 x 10 7 RADS + 7 DAYS AGING @ 150*C ^ 7 DAYS IN 60 PSI STEAM
p< .}f. }W%.. s/ ,. y 8 d.yQ $ v. .. >. w
. l 1
. h N p ,; 7'2
.-umL 2
( i-o O tc ehaged Ba!@mdagen - Silicone Fluids in Radiation Environments '
- Silicone fluids have been used for a number of years Vers!!ube* F50 in environments subiect to radiation of various types.
Tney have been used as an hydraulic fluid in nuclear This silicone fluidis a high temocrature fubri: ant power stations and on nu: lear powered ships. They capable of operating at tem::erature ex'.remes have operated in Van A!!cn Belt environments and in laboratoa/ and diagnostic apparatus. (-140F to +503F) and has been used we!!in rad tion environments en:ounteredin spa:e flight, Four fluids have seen extensive service. Compared to the above fluics. it has a low radiation - tolerance. It contains mo:e:ularly bound chtonne SF 96 series which star *.s to generate a:id at 1 x 10' racs. This increases with in:reased dosage. Ge!!ation ec:urs Avaifa ble in many viscosities these fleids are poly- at 2 to S x 10' rads. dimethylsiloxanes.
- The eMect of rad 4ation on,siti enes is a cross linkin They have the best viscosity / temperature properties mechan:sm which graduatly increases the viscosi:y of any known fluid and wi!! operate from -65 to' . of the fluid eventually resultin; in gellation.
('. +400F, Theoretical found in: treatment of these effects will be The radiation resistance will depend on the vis:esity. selected. - (m) q./ nuse u.to censtuon
^
AA Miller, J. Am. Chem. 5 c. 82. 3S:9(1950) AA. Miller, J. E.C. Produ:t Resear:n and Develop-SF90$o do ment 3, 3,1964, pp. 2S2 2SS. SF961oO 2o SF96 soo to SF96-1ooD Physical Propertie: of Non irradiated Fluids 7 sr ,+sas se nte SF1154 sriist r se "Y
-4ea 25m eco SF 1154 is the most common material used in these C 5:e applications. SF 1154 fluid is a copotymer containing 77l icce es
%no y ,,
both methyl and phenyl units. It has excetient high temperature stability and can be used from -56 to @
*ma
#!s si rs se is
*" it s2
-540F. It has excettent radiation resistan:e and
as is caoabte of absorbing up to 5 x 10' rads before gellation. ,%T., c:e 8 e Paar Qis X's M83 3 0, gg r.,, po.a. x:s Ms: xec x: SF 1147 Saee #< C eve x sc x:e x.o
* *'m '"*r*
Ssw c Meat e 0 EsM
" 20 1 Os
' 5^2 C 8a i cas This moderately low viscosity (= 50 es/77F) silicone 0 34 C39
- arm a4e (foid is the best lubricant of the silicone family and U,'W',**," >Te"eco y @em' (jf8a 3y,eca c 34 v e* to 4 ** m very possibly the best lubricant known for bimetallic jj.. . "' "
contact. It has high radiation stability gelling at 5 x 10' rads. -'=e e
\
V w m u. w
. CDS 4176 SILICONE FLUIDS IN RADIATION -
( . ENVIRCNMENTS F i m . . i Ettect of Radiation Whereas the r .ajo effect of radiation on silicones is that of cross linking to increase viscosity. some of them.notabfy Versilube F 50 wi!I also release small cuantities of HC1. . The two accompanying curves show the effect of radiation on viscosity for all four fluids and the effect on a:idi y of Versilube F .'O and SF 1154. 1000 - . 800 " In:cie'nt 8 00 - Getation - - 700 - InCroient 6.>3 - Gelat'
$03-O 400- g o * -
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)
g N*/ ** l .[ 70- , h to-' - The eff ect o! Racation I - g on j $0- , Aciesy-Versitude F 50
$ The a ffect of Ra c.ation k .
p~ on G g v,s:esrir for saicones , j . 10-8 SF t154 l 1C - . . . . . . j 0 50 100 150 200 250 300 to 20 30 40 50 60 1 Ra ciation Dos a g e - Ra es a 10-* Raciation Desage-Racs : 10-* As Gene a' De:tre Com:any has no control over the use to an.: c:ners tray ;ut tne r .ateriat a coes net etaim or warrant t*.a: em you* ca t<u'ar ci :wr 9s arges t$e 'resues you we ottavs tror- %e use o' tne croca: =J: de t$e same as tocse cestrim GINip.A1 Elf CTRIC COMPANY l ir tM :ornaan.:at.cfa or t .at you w s find the enformaton or g, coq pag g $ p g I re:c . .enca*.oas corvete acevrate or useful The Co*nsany a::er:s ao :.andq in me;h;e . e or o: sera se. for any camage RUEMR AN0 f tVID o P20DJC15 DEPARTMENT
. retur . ; t :r se.r rem:e :3 :n, .nrerrmato, or recorynen- WAl[ Die 3 N!WYO21C12t85 l
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- -. T -
ITT GRIllNELL COMPUHAI1UN PIPE HANGER DIVISION RESEARCH, DEVELOPMENT AND I ENGINEERING DEPARTMENT - n , \ . FINAL REPORT
\
CONSUMERS POWER COMPANY CONTRACT FOR CONSULTING SERVICES FOR THE REACTOR COOLANT PUMP SNUBBER SEAL STUDY
" ~
FOR THE MIDLAND PLANT CONSUMERS POWER P.O. CP10-1101 ITT GRINNELL PROJECT NO. SPS-8014 . s \.s) REPORT NO. SPS-ZPR-8014-5 PRF?ARED BY: M 4 DATE: fz.I//h 7 PR$ PARED Y: ,S -
&d DATE: _ [2 -O h- /[6/
V / APPROVED BY: - [,,,,' r d~ DATE: MMf/f/' f i AP' PROVED BY:/l m TE:/2/z y'/8 / o. v g,f _~ // o
, TABLE OF CONTENTS PAGE i
Abstract , , Summary . 11 iv Conclusions Section I Establishing. seal life stste-of-the- 1 art baseline. 1.1 Screening and gathering of 1
. technical data.
1.2 Evaluation of EPDM compounds. 1 1.2.1 Overview. , 1.2.2 Parker Compounds. 3 1.2.3 Minnesota Rubber Compound. 3 1.2.4 Federal Mogul Compound. - 3 Acushnet and W.H. Salisbury 4 1.2.5
- Compounds.
- 1.2.6 ITT Grinnell Qualification 4 Te's ts .
1.3 Evaluation of "Other" Materials. 4 , 1.3.1 Viton (Duponc Fluorcelastomer). 4 1.3.2 Kalrez (Dupont Perfluoro- 5 elastomer). 1.3.3 Hycar Nitrile Elastomer. 7 8 1.3.4 Vespel. Envex 1115 9 1.3.5 1.3.6 Kel-F. 9 10 1.3.7 Metallic Seals. Summary of Consulting Screening. 11 < 1.4 15 Section II Snubber Seal Failure Criteria. Outiine of Purpose. . 15 2.1 , 2.2 Baseline Dimensional Review Design- 15 Analysis. , i j
. I
~
PAGE 2.2.1 Federal Mogul 16 2.2.2 Acushnet . 17 l , 2.2.3 Minnesota Rubber .' 18 l 2.2.4 W.H. Salisbury 19 2.3 F.T.A. 19 - s : Section III Seal Life Projections and Verification; 21 3.1 Estimation of Life. 21 3.2 Testing 22 3.2.1 Purpose . 22
~
3.2.2 Method of Testing 23 3.2.3 Evalva. tion Criteria 23 25 . App'endix 1 - Appendix 2
- Appendix 3 Appendix 4 Bibliography e
e* 4 l .
- - - - - _ - - ' - - - - - - - - - - _ _ _ _ _ ,-m---g,, ,-nw, . , - - ,. - . , _ _ ., wn-,e_,y,__, -. - ,. -- -------n
- - - - - + - - --,,-
y
u
~
ABSTRACT , This report covers all work accomplished
~
by ITT Grinnell Corporation for ' Consumers Power dompanyunderP.O.CP 10-1101,'" Reactor Coolant Pump Snubber Seal Study'for the Midland Plant". Results of evaluations based on seal material state-of-the-art, application consider?tions, failure modes and discussions with consultants knowledgeable in areas of concern are presented. Seal life modeling meti:odology is considered and an environ-mental test program to quantitatively define seal life based on overall results oi' this study is proposed. . l - l l s l . e e G i l l i l
3
SUMMARY
/N -
\ ,)
- This study was conducted to evaluate the .
feasibility of extending the life of snubber seals exposed to a defined typical nuclear power plant environment. The primary goal of this study was,
~
to generate information in a quantity and level of refinement to provide a technically sodnd basis for defining, evaluating and finally choosing a means of extending seal life. It was proposed that the actual qualification of seal life extension would be acccaplished by a Phase II follow up. study and test program.
-s Initial effort consisted of gathering dsta and technical reports on seal material in the following categories: .
- a. EP (ethylene propylene)' compounds utilized in present M,idland reactor coolant pump snubbers,
- b. "Other" elastomeric compourds.
- c. Plastic / resin compounds
- d. Metallics ,
An in-depth evaluation of extensive material gathered in each of these categories was' conducted. 11 Y
Further. efforts were carried,out in the following
/% ' areas: . .
(s, a. Snubber seal design considerations and failure , modes.
- b. Seal life modeling methodology.
Testing considerations and requirements.
~
c. In carrying out these efforts, it was noted that . very little has been done in industry as a whole with
. respect to dosage rate effects or combined effects of radiation, air, fluid and temperature. To confirm and possibly expand on our consideration of these effects and our overall effort, several prominent persons in the field of elastomeric studies were consulted. These-included,
- a. Robert Barbarin, Technical Director R & D', .
O(,j Parker Seal Co. ,
- b. Daniel Hertz, President, Seals Eastern.
~
- c. Jerry Sieron, Technical ~ Manager for Elastomers, WPAFB.
- d. Lloyd Bonzon, Project Engineer, Sandia Laboratory.
In general, all concurred with our findings and were in agreement with our considerations for testing and final evaluation. Man,y helpful suggestions were ob-tained. A summary of discussions with the above is in-cluded in Appendix 3 of this report. . i O 111
CONCLUSION' ,-
. ~
Based on the overall considerations of environ-ment, design, testing and cost, EPDM material exhibits the highest probability of success. Due to the fact that many different EPDM compounds exist with a variety of combinations of fillers, ex-tensive testing has to be performed in order to deter-mine the best possible compound. The means by which this is to be accomplished includes, but is not limited to, stress relaxation tests and " bread-board" tests (tensile , strength, elongation,.durometer, etc.). Because of the nature of these tests and the compounds themselves, the actual testing has to be a minimum of,six (6) months.
)
These methods will yield significant results and will en-
'able ITT Grinnell to quantitatively define seal life.
G S 1
=
iV
/
)
,'I. Establishing Seal Life State-of the-Art Baseline
~
1.1 Screening and Gathering of Technical Data -
- 0. (Material's Surysy) f Utilizing the resources of ITT Grinnell RD & E , I the New England Research, Application Center (NERAC) i and a number of seal manufac.. aers, "ex' tensive !
data and publications have been acquired.
' ~
Resulting from this,an updated file was compiled outlining new manufacturing practices, new materials and test results with respect to various extreme conditions (corrosive fluid, elevated temperature, radiation, and steam). From several in-h'ouse sources, a ser'ies of articles was obtained detailing i failures of snubbers due to fluid leakage at various , power plants along with the causes of these failures. V[ T It was.noted that misinstallation is potentially the highest cause of seal failure in a snubber system. _ Seal degradation was not attributed as having an influence in any of the cases involving EPDM compounds. Data received was categorized and evaluated under the heading of EPDM, "other" elastomers, plastics / resinuous compo'unds and metallic material. 1.2 Evaluation of EPDM Compounds l 1.2.1 Overview In, general, EPDM exhibits superior qualities for our envir.onmental parameters. Physical properties will depend on variations l l 1 l
in the comp.ounding and the addition of reinforcing materials such as carbon black
, and silica amine or phenolic antioxidants, processing aids such as stearic acid or plasticizers, and curing agents like peroxide sulfur or sulfur donating accelerators.
EPDM General Characteristics Durometer Range: 30A-90A Tensile psi: 500-3500 , Modulus (100%) psi: 100-3000
. Elongation: 100-700%
Flex Cracking Resistance - very good Tear Resistance: fair-good.
~
Abrasion Resistance: good-excellent - Impact Resistance: very good , Service 1emperatures (for continuous use) 170 to 350 F - 6 Environmental Resistance: Ozone outstanding Oxidation excellent Water excellent Radiation good Silicate Hydrofluid good I , l l 2
-.~ . _ _ _ _ . . _ . ..
i . 1.2.2 Pa'ker r Compounds , Parker has done extensive testings on its compounds. Both temperature and radiation
~
(separate) testing were perf6rmed. ' Parker
' ' compound E740-75"is highly' recommended due
s to its excellent resistance to radiation levels up to'10 0 rads unde'r room temperatyre ( s e e
~
Table 4). When exposed to temperature, Parker.E-740-75 shows a good back stress retention percent (Graphs 1-1A). Percent com-pression set is relatively low after temperature aging in both fluid and air (Graph 2). . Ranking of the Parker compounds on_the approved i
~
vendor listing: -
- a. E740-75 specially formulated for snubber applications. ,
- b. E692-75 high temperature ' resistant but not recommended for radiation.
1.2.3 Minnesota Rubber Compound Minnesota Rubber Co. has performed radiation and temperature. testing on 1.ts EP compound 559 EO (Graphs 3-7). When. temperature tested, this compound i exhibited relatively low compression set at high temperature (Graph 8), but not as good as Parker compound E740-75 (Graph 9). 1.2.4 Federal Mogul Com' pound
\ Federal Mogul Compound ES'O was not radiation tested
, , _s m
.-7, y .-- .
whereas compound E59 was and exhibited desirable compression set at 10I rads." Graphs,10 through 14 l . compare the physical properties of the compounds
~ ~
investigated. Note that the testing' parameters - [ differ which made it hard to draw any concrete conclusions as to what compound is a better one. 1.2.5 Acushnet and W.H. Salisbury Compounds No data on environmental ' testing was available from Acushnet and W.H. Salisbury. We were provided with a. technical sheet containing basic properties
, and breadboard test results. .
1.2.6 ITT Grinnell Qualification Tests . ITT Grinnell had perf.ormed qualification tests on
-- all of the EP compounds included on our approved
\
vendor list. These were accelerated LOCA cimulation tests and were judged on a basis of whether after radiation and temperatt.re exposure, the seals leaked under dynamic testing. These tests did not give aitrue indication of scal' life. Copies of these test results are available upon request. 1.3 Evaluation of "Other" Materials 1.3.1 Viton l 9. Viton is a fluorocarbon elastomer which has ex-I hibited very good heat and fluid resistance when l l compared to other elastomers. . Compounds of Viton hdve good tensile strength adequate for most applications. The durometer
.O (Shore A) hardness ranges from 50 to 90 depending om-ee
y i"'\ . s
. material used for "0" rings and seal's and .
accounts for about 80 percent of all applications of Kalr.ez. Table 2 outlines the general physical properties for Compound 1050. Kairez can be used continuously at temperatures of 600 F in many mechanical seal fluid environ-ments. It is suitable for service at temperatures of 100YF to 180 F above that of any other com-
.mercial elastomer.
Kalrez does not exhibit outstandin6 compression set qual'ities with respect to elastomers but does ! < outperform plastics in general. Table 3 represents traditional compression set. data for Kalrez 1050 "O" ring (heat aged in air - Figure'3). 6 Kalrez can withstand 1 megarad (10 rads) of radiation with little effect on physical properties. I rads) produces a i Exposure to 10 megarads (10 moderate effect with 40 percent loss of' tensile strength and 25 percent loss of elo'r.gation at 0 break. At 100 megarads (10 rads) there are severe I effects with 80 percent loss in tensile strength 1 and 80 percent loss in elongation.. Figure 4 shows the effects of radiation on Kalrez. . Note l i that when compared with Viton, Kalrez expresses
',~
better scaling force retention at-400 F for long life (Figure 5). I , e
1.3.3 Hycar Nitrile Elastomers - ( ( Hycar nitrile rubbers exhibit high t, ensile strength, good abrasion resistance and 1cw com-
. pression set. Hycar rubbers *in the~ medium and medium high acrylonit' rile rance offer a balance of physical properties between hardness and oil abrasion resistance on one hand and resilience and low temperature flexibility on the other. Medium -
'high acrylonitrile.hycar (1002) has good water-resisthnce during prolonged service.
'Hycar nitrile does not provide outstanding thermal
. resistance. The maximum service temperature for hycar nitrile is about 300 F. According to manu4 facturer catalogues and R. Harrington's report on Hycar nitrile rubber, amount and type of fillers are effective on hycar elastomer radiat4.on stability.
Data obtained from radiation expos ~ure to gamma 6 radiation (1 x 10 rads) in air of 25 C indicates that these compounds show decrease in elongation and increase in hardness with increasing exposure to radiation as the doses are increased. The tensile strength increases. This. increase is a very 1 strong in,dication that crosslinking is predominant. Although not as pronounced as the tensile strength, the ha'rdness appears to be increased with in- \ - ! creasing radiation exposure. m
-g - --
j 1 I Accordin6 to the enluated data on nitrile elastomers, the use of these materials in a high dosage radiation environment is not recommended.
- 1.3.4 Vespel Vespel' parts are suitable for use in a wide range of temperatures with very good resistance to hydraulic fluid. It provides excellent abrasion _ resistance while maintaining extremely good mechanical properties with respect'to i temperature. -
Radiation resistance of Vespel has not been fully documented. However, being part of the Polyamide family, which exhibits threshold damage at an . absorbed dose of 8 x 10 5 rads and excessive 6 degradation at 9 x 10 rads, Vespel should be carefully examined when and if used in an irrad'iated i field. Vespel has been compounded to withstand temperatures-0 of up to 500 F (600 F when oxygen free) . The major drawback in using 7espel.(outside of questionable l radiation resistance) is its inability to with-stand a steam environment which could be present in a LOCA condition. Poor compression set and close folerance requirements (for temperature cycling) are a ma'jor drawback.
\
! U O
1.3.5
~
i Envex 1115 . Envex.1115 is suitable for use in a. wide range of temperatures (cryogenics to 550 F)
, . with excellerit chemical resistance t'o most
. hydraulic fluids It'provides a high com-
~
pression strength (28000 psi) among other good physical properties.
, Radiation resistance:
'Being part of the Po,1yamides, Envex follows the same criteria as stated above (for Vespel).
'The major drawbacks are very poor compression set
.and extremely close machining tolerances. ,
1.3.6 Kel-F Kel-F plastic is a highly fluorinated resin O' which' offers good mechanical properties. Kel-F plastic is unaffected and therefore compatiole with a wide variety of chemicals. It operates
! over a temperature range of -400 F to +400 F without decomposition or mechanical failure.
Furthermore, it exhibits zero moisture absorption and is unaffected by high humidity. Kel-F is a thermoplastic exhibiting high compressive strength and relatively good elastic memory (plastics as a
~
i f' t , whole usually lack in this respect).
. Radiation resistance:
,. Kel-F is readily susceptible to radiation induced damage. Also under these conditions Kel-F releases gases which may have a corrosive effect on c
.__..?._. - - _ . . _ . . . - . _ . . - . _. . _ _ , . _ _ _ _ , _ . . . - - - . _ . - - . . _ . . .
*l adjacent components. It becomes quite soft ,
> and tacky at lower doses. In light of the s'
above, the use of Kel-F thermoplastic is not recommended for our environment.' 1.3.7 Metallic Seals Two differenct types of metallic seals ("K.csehl" and "helicoflex") have been evaluated. The "K seal" is an all-metal seal designed for use in " static" application. A "K seal" consists of.three basic elements, the body, the lips, .
' and the surface coating (Figure 6).
' Basic Helicoflex seals comprise one' or two metal ,
linings formed around the toroidal section of helically wound spring (F.igure 7)'. Metallic' seals can perform in all " static" face i x sealing applications in a wide range of temperatures and in a radiation environment'. Metallic seals are available in a wide choice of. materials and shapes to meet property and fluid requirements.
~
Because of the inability of a metal seal to readily conform to its cavity dimensions, extremely l stringent tolerances must be adhered to. Surface finishes (both gland and seal) are very tightly controlled. Adherence to proper installation procedures would be extreme'ly critical and if done i I . incorrectly may result in an excessive failure l percentage. The. major drawback of these seals is i , the high co5t of purchasing and remachining (redesign in some cases) of. existing glands. 10
1,. 4 Summary of Consulting Screening
. An agenda of questions was designed to discuss actual ,
' state-of-the-art technology of the elastomers. A breakdown of the general points' is (see Appendix 3):
- a. EPDM is one of the best materials available for our operating' environments.
From their actual experience with EPDM compounds and the physical state of the seals ,after being exposed for five (5) years in actual operating con'ditions, a substantial. extension over five years is a realistic projection (detailed testing will be required).
- b. A mathematical model (life projection) has not been
/
used extensively, if at all. This area needs , () extensive research work. will start such a program in the future. The Air Force (WEAF) Sandia Laboratory staff have done some work in this area, and based their projection (modeling) on accelerated-aging testing. Sandia's concensus isuthe shorter
~
the extrapolation, the better your life.pr'ojection. I It should be noted that this concept is not shared by the remainder of the industry. All three other consultants do not recommend induced harsh chemical
. degradati-on which is non-existent i.n actual working conditions. 'It is we.lT k'ndwn~ tlis.t'iii'a?
. ' strained elastomer two rel&xations exist. These are known as physical and chemical stress relaxations.
s Physical ~ relaxation involves two physical processes 1 11 vm - -,ewp-v-,-- r w- --- -- 4 - ,- , e e-----,,--.-,-,.,n - n---__,,-- ,.----n-w, ---- e < -w
(such as diffusion of polymer units or movement of entanglements) whereas chemical (nJ relaxation involves the br'eaking down of covalent bonds. .Both of these processes are - expec'ted to have different temperature de-pendencies . I.t has been verified that in low temperature rang,e (25 C - 111 C), no appreciable chemical relaxation occurs. This postulate has been verified by.J. Sieron, R..Barbarin and D'. Hertz (consultants). D. Winkler, of the University of Akron, Applied Research Division of Polymers, (uorking in this . area) also supports this postulate and strongly l j - rejects the accelerated age testings. r 7-
- c. There is a synergistic effect on Radiation -
Thermal degradation.
. d. Dosage rate is definitely a consideration that we have to pursue.
- c. Metallic seals show a' good alternative. They are strongly recommended for static applications, althou6h testing has to determine the degree of -
limitations for dynamic cases.
- f. , Thermal cycling is a failure mode. For our temperature range (50 F - 120 F), there is little or no effect on the longevity of the seal.
- g. Due to the fact.tha't some cf our seals are immersed in a compatibld silicone fluid
- - - - , 4 .- - - - , . _ . . _ , - . , _ , . .
(GE SF-1154), effects of oxidation are minimized (irradiation'of the polymers . results in bond cleavage giving free radicals, which, in the presence of oxygen, react by a chain mech'anism to form oxidation products that include thermally labile hydroperoxide). It is one parameter working to our advantage.
- h. _
Our testing program (relatively short time testing under actual operating conditions) has been judged adequate for seal life projection .by all the consultants with the exception of - San'dia . Laboratory.
- i. Unreinfocced plastics are not recommended for use in our snubbers. Consideration was ,
given to procurement costs, dimensional criteria of the seal and gland, testing
. requirements and availability of the materials.
Arrhenius projections and the WLF equations are mathematical interpretations of a chemical l and physical (respectively) evaluation of tempera-ture only. They will lose their high correlation when used in conjunction with multiple para-meters (fluid, radiation, steam...).
- j. Degradation by temperature is highly minimized when Tmin + 00"F 6T operating b nax 100 F. (T = Temperature)'
l 13-j
I II Snubber Seal Failure Criteria 2.1 Outline of Purpose . 1 In order to provide a means of life pr diction, , an in'-depth understandi,ng had to be-achieved of . how a seal could be expected to fail. This was - carried out in the manner described below. Dimensional, analysis was conducted with resp.ec.t-
' to gland sizes and'per'centage squeeze realized by the seal. This information was then' applied, in conjunction with the material properties outlined -
in Section I, to devise a pictoral mod,el (FTA) which would depict areas with the greatest , probability of failure. Once'this had been
- determined,,a potential seal material could be .
s .
judged by its strength in these areas. 2.2 Baseline Dimensional Review Design Analysis ITT Grinnell evaluated the minimum, nominal and maximum seal squeeze with respect to the tempera-tures existing in the seal environment (50 F - I lowest readi.13 based on a shutdown condition, 120 F - normal operat.ing and 316 F - projected i highest reading during a LOCA condition). These results (Tables 9 1 through 9.4) have been compared with the applicable vendor recommended squeeze range specified for each seal location (to secure des'ign aspects and sealibility of a seal, all es calculated perc.ent squeeze for each specific seal N~- must fall between minimum and' maximum range of 14
-' " - ' -' --- _m_
6 -- e squeeze required by seal manufacturer). Available design sealing surface finish re- , quirements and existing extrusion gaps (maximum and minimum) have been defined'and depicted in . corresponding figures. Results from all evaluation and calculations are summarized in Figure 8 through 20 and corresponding Tables 4 and 9.1 through 9.4. 2.2.1 ' Federal Mogul - The valve retainer plate 0 ring (Figure 9) is exposed to system pressures of 5000 psi to 10,000 psi. Since the specified compound (E5.0) has a durometer of 70 + 5 (Shore A), standard design , practice in'dicates the use of'back up rings or a zero clearance gap. However, since the valve q k seat disk-to-valve body does not. constitute a seal,' equal hydrostatic pressure will e.ist _ x in the valve chamber (including the gap). Therefore, the .003 inch to .~009 inch gap does not constitute an extrusion path. Figures 9, 10, 11, 12, 13, and 14 are all static 0 rings (EPDM peroxide cured seals manufactured by Federal Mogul Reference Table 4). The Federal Mogul seal squeeze range requirement is .006 inches to 35 percent of cross section diameter. Recommended l static seal surface finish requirements are 32 micro-inches. Figures 9, 10,~12, 13, and 14 comply with the above stated requirements. F.igure 11 indicates that both nominal.and maximum seal squeeze exceed 15
that standard requirement of ,35 percent. However,
'~s .
since initial design squeeze or' compression pro-vided for low pressure sealing, and the reservoir '
. ~
sight glass is a low pressure' seal only, the maxi- - mum rqueeze of 41.51 percent will not be a detriment. , Figure 15 is a static 0 ring (EPDM peroxide cured seal manufacturedJby Federal Mogul reference Table 1). The seal will not be compressed due to mismatched dimensions. Since this seal is not exposed to system'high pressure and a leakage problem has not been experienced at this location, the use of this specific 0 ring does not constitute a major problem. However, change to'an alternative "O" ring with a larger cross section is recommended.
~
! ' ;2. 2. 2 Acushnet Figures 16 and 17 are both static "0" rings (EPDM peroxide cured) manufactured b'y Acushnet (reference Table 1). The Acushnet seal squeeze - range requirement is .010 inch to 35 percent of I cross section diameter. Recommended static seal surface finish requirements are up to 44 micro-t inches as indicated.by Figures 4 and 5, the squeeze I range requirement has been met'. Gap #1, depicted in Figure 17, indicat,es a .001 inch to .00275 inch intrusion path. Since the specified compound (E17018) has a durometer of 70 1 5 (Shore A), and the "O" ring is exposed to syst'em pressures of
\ -
6300 psi to'10,000 psi, standard design' practice 16
i indicates the use of a back up ring. However,
. cylinder vendor design experience indicates that
(T x_ ,/ the use of back up rings in this type .of seal gland configuration is not effective and may actually detract from seal functionabil'ity. This fact, coupled with the fact,that ITT Grinnell has not e,perienced x any leakage problem with the , external bearing seal, verifies seal design adequacy. 2.2.3 Minnesota Rubber The rod seals (Figures 18.1 through 18.4 are
~
dynamic s'eals (EPDM peroxide cured) manufactured by Minnesota Rubber (reference Table 4). Design configuration of this seal consists of one statid and one dynamic portion. For an adequate seal to exist between this seal and the bushing, fit of the
\ static portion of this seal in x direction is the
, main concern. For the static. portion of this seal, the percent of compression in the x and y directions were determined at the temperatures of interest (reference Table 7 1 A through 7.4 A). Manufacturer recommended percent compression for this specific i seal is undefined. However, calculated values in l x direction do not appear to-be inadequate. This is further s.upported by the fact that ITT Grinnell has not experienced any leakage problems with the rod seal.
Figures 19.1 through '19 2 show the rod wiper (EPDM peroxide cured) manufactured'by Minnesota Rubber 17
, , -r---
T (reference Table 4). In o,rder to extend life
- of this wiper some des.ign modification is' recommended.
0 . 2.2.4 W.H. Salibury The piston seal (Figure 20) is a dynamic seal (EPDM Sulfur cured) manufactured by W.H. Salisbury (referenc.e Table 1). The percent or' deflection at the seal lips has been defined and listed ,
.(reference Figure 20). The piston seal will not t
compress at any p61nt. However, keeping in mind the allowable bypass, the current configuration of piston seal is adequate. 2.3 F.T.A. The F.T.A.'(Fault Tree Analysis) provides an adequate means 4 to identify, document, and analyze potential failure of , seals and their overall effects on system performance. ( The F.T.A. generally starts by identifying an undesirable
# event at the systen level and identifies the, event at <
subsequent lawer levels in the system that can cause the undesirable top event. The primary purpose of the F.T.A.
~
! is to ensure that the system (seal) will be reliabla and ( safe for its intanded use and foreseeable life time. The standard logic symbols used in hardware technology were used to establish the fault tree. , Appendix 1 ou5-lines the different symbols and their respective meanings.
. It was hoped that, a quantitative probability would be assigned to lower levels of.the F.T.A. and that the final
>~s probability of an event taking place would be evaluated using the subsequent logic gate mathematics (Appendix 1).
18 I
-. e - - -
Due to the scarcity of meaningful data on seal i failure'in general (in a nuclear snubber environment) . a quantitative probability of success.could'not be determined. The alternative method is to rank the , relativb probability of a part failure to the other possible failure modes in that system. This method utilized the ways that elastomeric or non-e'lastomeric seals degrade (data, articles, consult' ants ) see Appendix 4. , 9 e D l - e e d I o e I O e a O 19
III Seal Life Projection and Verifica' tion Est'imation of Life O' - 3.1 Resulting from the in-depth study whic'h has ; been performed, certain conclusions have been
~
reached. EPDM has been. determined to 'be the" - best candidate for a- extended life. This choice was made taking several conditions into account. Foremost were the environmental con-siderations. EPDM has withstood this parame.ter in field use without exhibiting any discernable degree of degradation. In laboratory testing, EPDM consistently outperformed other elastomeric ,
^
compounds'(abrasion resistance, heat resistance, fluid compatability, radiation resistance, etc). , l i Secondly, consideration was given to geometric parameters, not only of the seal itself, but also, to the glands. Our snubber de, sign was intended to be used with elastomers having allowed space for swell and thermal expansion (elastomers have a higher value than do plastics
- or metals) to name a few. If another material (plastic or metal)'was to be used, then remachining or complete redesi 6n of the glands would most
~
likely have to take place. This process would
- entail a,significant cost impact and in the case of
- certain seal locations (cylinder end seal) may 20 ,r- --- , -
j
- have proven to be very impractical. The third major consideration was the cost and availability of the materials. EPDM is relatively , inexpensive, readily available from numerous vendors and has a short turn around time for delivery'.~
Based'on the above stated information and the heavy endorsement that was given EPDM.by our consultants who are expert's i'n this field, we determined that EPDM had the highest probability for success. ITT Grinnell feels that the life of these seals could be extended significantly beyond tlie present seven (7) year period. I'n order to .- verify this, extensive testing will have to be performed (outilined in Section 3.2 b' elow) . 3.2 Testing 3.2.1 Purpose . This section will outline'the test procedures necessary to verify life projections of EPDM seals as used in ITT Grinnell snubber systems under a nuclear power plant environ-ment. Emphasis will be placed on simulated actual . condition:s and a degradation vs. time graph will be plotted. This will enable f ITT Grinnell to state with a hi6h. degree of certainty the maximum life expectancy of the I system seals. c s i O 9 21 _.
3.2.2 Method of Testing As previously stated, the ITT.Grinnell test
'} programutilizessimulatedoperationa[ con- '~ /
ditions. Close attention will be paid.to , radiation levels, temperature, fluid, steam . and compression of the seal itself.-
~
Qualification testings will be composed of the general breadboard testings.plus the compression stress relaxation. Compress. ion stress ~ relaxation test is a direct representation of the several mechanisms of degradation (relaxation) the seal material will see under actual operation. . Coupled with the breadbo,ard tests, stress .
- relaxation,should develop adequate data to predict with a high confidence level the suitability and
) '
longevity of the polymeric material under the actual operating conditions.
- 3.2.3 Evaluation Criteria Seal property data will be recorded in the form of percentage of properties retained or changed.
This information wil1 be used as input into a i mathematical curve fitting (regression) computer program. Final extrapolations and analytical results (graphs) will then be compared to and checked against known benchmarks (data obtained from testing of five year and eight y. ear exposed 22
seals) for accuracy. Effor,ts will be made s ' (via sensitivity evaluation, separati6n of ,
. variables, etc) to discern the sphere of influence that each separate parameter con-tributes.to the total degra,dation of the seal.
Based on the above, and in conjunction with the knowledge of potential types of failure modes (brittleness, degree of swell, high set characteristics, etc.),, a determination will be made as to how long EPDM' seals can safely be used in a nuclear environment. e l i 23
i APPENDIX 1 - CHARTS, GRAPHS AND FIGURES l i 6 D 9 e e i 9 e e h e 9 0 2 l.
F N. ( \ (m.)
. u .v .
ys
*J MlDEAND' SNUBBER SEALS FUNCTION-TYPE SIZE- MANUFACTURER COMPOUND CURE METFOD ITEM SEAL TITLE LOCATION
'O' RNG - FEDERAL- M0GUL - E 50 EPD'A-PEROxtDE-1 , 'O'RNG-OUTLET ADiPTER FESERVOIR - STATIC 1.7371a xJO3W FEDERAL-MOGUL E 50 EPDM-PERO /10E 2 j O'RM-DRAIN ADAPTER RESERNOIR STATIC - t' RING .907 0 X.103W RESERVOIR STATIC O" RING .907 ID X.lO3W ' FEDERAL -MOGUL E 50 EPDM-PEEOxCE _
3 ~O Sr.1 -FLLTER AIMPTER STATIC 'O RING . A87ID x.103W FEDERAL-MOGUL E 50 EPDM-PEP 0XfDE 4 . O'R'JG - MTG. STUDS SIGHTGLASS:RES. STATIC - 'O R.NG 299 LDLX.103W FEDERAL-f.OGUL E 50 EPDV-PEROYDE 5 'ORNG -CLASS GAUGE SIGHTGtASS-RES.
.551 IDx.070W FEDERAL- MOSUL E 50 EPDM FEROXCE 5 . ' URNG -CAP SIGHT CLASS-RES. STATIC 'O'RNG FEDERAL-M0GUL E 50 EPDM-PER0xiOE 7 'OR' G -CR SEAleLVE TUBING RUN STATIC 'O' RING 796 DX 139W STATC - V' RING .549 (Qx303W FEDERAL- MOGUL E 50 EPDM-PEFOxtDE
.9 _ 'O'RE -CIR. SEALVALVE TUSNG RUN
-O' RING VARICUS ACUSHNET- E 17018 Erra-KROxiDE 9 < EXTER.'LaL EFARNG SEAL MOCEL 52 ONLY STATIC EFDM-PEPotIDE VARIOUS MNNESOTA RUBBER 559-EQ ROD SEAL CYLINDER DYNAMIC- LIP i
__ 10 z ACUSHtET E 170tB EPDM-PEROXOE 11 . CR.'.G-END SEAL CYLlhOER STATIC -O RNG .VARIOUS VARIOUS Mr4NESOTA RUBSER S99-EQ EPDM-FEROxlCF 12 . RCO W:PER CYLINDER DYNit/JC- LIP LVARIOUS W.H. SALISBURY 80154 EPCM-SULFUR 13 . PISTON SEAL CYLINDER DYNWJC - U-CUP FEDERAL-MOGOL ' E 50 EPOM-PEROxtDE E 'O' RING -VALVE TUEE CONN STATIC - ORING 1.171 tDX.116W E 50 EPDM-PEPCxlOE 1> . 'O R*sG -VALVE RETArJER PL. STATIC - O Rr0 - 1.293 tDX.103W FEDERAL-MOGUL l E 50 EPDM-PEROx;DE-
! IC THREAD SEAL VALVE STAT!C - 11 TREAD .644 lQXD87W FEDERAL-M0GUL 1.299tDx.103W FEDERAL-MOGUL E y) EPDM-FEROxtDE THREAD SEAL VALVE ' STATIC - THREAD l i) _
STATIC - ;O fd6 .6441DX087W FEDERAL - MOGUL E 50 EPOV-PER0xlCE h i7 Fd_L PORT PLUG CYLINDER CYLINDER STATIC 'O RING .7551D.X.037W. FEDERAL.- MOGUL E '50 . EPDM-PEROXIOE 14 FLL PORT FLUG CYLINDER MODEL QUANTITY & SEALS 52 30 90 29 TABLE'.4 -
-'6 - - - - -
_ ,4 - 4.a. -- i - ,
- .-..-...=.=.
. VALVE BODY 1
6 ,, . 5 a; 7: -.
- , ESERVOIR 3
# y
.,g $ . e
. ((((
g
. d)c CIRCLE SEAL 9ALVE
- V!EW A-A uu g .
g p ..
~~
W TUBING RUN / FITTINGS f
'. . _ . . . _ . _. . . . '...-- .- VALVE - . . -.
. j... ; "^ SNUB 8ER, - -
g7 .. ~
', S p . :
l t!
^'
s k, 4k[^. tx xwwwkxxxx' .
'i ' '
[g1 2 [
~
3 7' ._ f 1 N i
% /m -
. h %\ % %\ T. B A C2 B \O .
NNNNNN N W_ N N NN _ . f ~ A " "y" . / ..
t.'.L'E Gmust twpw.wun suosccr. SE-h. . .SI.M. . ., . . . . . . . . . . . . . .. . ' snu;uar cm . . . . . . . . . sY..Y.lA . . . . . . . . . . Da Ts'.7 1.5 S t.E..d h.h.N 6. . W M..... $Y r,T CM . . . . .,j . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cusr0MER.. CHr.D.0Y .ktD. . . . . D AT E .7.".I.S .*O moacci no. ..S.E%. .So $..... . m oscc:... M .t Q l 6 9. D . .....-.....
- h. m .
BACKSTRESS -
~
RE4NSiON 'I'o . 100.a 1 . u . 90 . TE F = 130.-
. . . CURVE A 80 -
L % 3, 100 1 90 CURVEB . .
, TEFF = 150 _ ,
B0 - i V . . . 00' . i l - t .
. ~
90
; .. . TEMP = lie QURVE C 80 - . \/
t . . 70' . HOURS - "a
,aca 3eea .
ma seca 1eea
~
COMPRESSION STRESS ' RELAXATION TEST PARKER E7dO-75 8 .g . , ,. . . .
.. 1 .
^ ,
A }l._.c
. O .
g f . 27 . . . .
LUOJECT . . . WS b 6 U, U ,1. . . . . . . . . . . . . . . . . . . . MILLI f40 ......... w .. BY. . . .Y. .D. . . . . . . . . DAT E . . I.0.h.".h. ' sys i tu . . :. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . cuo. ov . .H.S. . . . . o31c . 2 .i.9. :@.1 Cust outn .. CAW.S.w.n^.??4. . . . . . PROJc'CT NO. . .h .h.h . . M. d. . . . . . . . . . . PROJCCT.....b.I D Llhkl S. ...... .... . .
\
n,. . , tv .. ..
- -l
-A
= FC0)
REL.ATIVE TG FCX) 1-B
' Q Y% g 5 % . .J L.f. ~ .
\w s \ _. > ;/
A . RELATIVE TO F(X)
= FC 3000) -B '
W-
. . . C w
- . .. r
' 9 .
RELATIVE TO F(X) = FC6027) C , s O . w.-n -x .
<-. '%x.9 .
t .- . BACKSTRESs. Rt.IENSION t [ OVERLAY COMPARISON
- PARKER E740-75 .
* .r .
'A
~
g_ G R, A I ..
* ~,
1
- f . .
t .. . .. ( _, .. . .. n. U g 2e l l
un w m2............ .. ... ,
- cuuaccr. . . SEAL. . STu DY. . . . . . . . . . . . . . . . . . . . . .
sv.. .'.(. M. . . . . . . . . . oA t c .'N 5 :d!. . i SY ST D3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CU$TOMCR .C@dbVYNMSb...... f CHKD.BY .N.D.....DATE.7.".I.h.h.. enoacenio. ..S.E.S ...M!4... enoaccT ..Mip.L4MD.. -:... ....... l
. % COMPRESSION SET s -
C
. 10 0 , -
s.
.s ., .
Water at 212 F in Beaker E-sF 1154 at 212 F in Beaker 50 [ 5.1 14
., O' 9'9 ,
70 504 . 1008
. HOURS HOURS.
HOURS
' PARKER-COMPOUND 740 ,
' HErdness varied from -2 to -1 from 75 orig. . (insignificant)
\e Swell after 1008 Hrs. 1.1% - insignificant .
"may be due to temp, also NOTE: Results were similar after Test B imersion
- 3 hrs. 0 3400 F, 3 hrs. 0 320 0F & 18 hrs, e.250 F .
Test A Test A Test A Orig. (70 hrs) (504 hrs) (1008 hrs) Test B ' 74 73 72
!!ardness 75 73-2430 2750 2380 Tensile Str. 2580 2620 '
183 179 - 197 177
.Elong. % 182 -
952 928 941 921 878 Mod. 0 100% '
+1.1 1.9
' Volume (%) ,
,.4.8 -
+.09 -
'~
gqAx. '21
- j
- 29
-l .
e g . I
, ?
1 . 6 I - . . . . . . - . .. J f i
._l ..n. .....s t , .
-..7 . . - . .. ...
- t. . i j ,
=.
t - - . . . . l
, ' I i- - -
. I. . . . .._'.. .. _ _ . _ _ _ _ '. . . .. F 4
!. .. t...:
p .. .
. . .1_.. i. _._.. ..... T ES i LNG3ONE u) .,.._ :
~ . . _ .
> IN AIR AT ROOM TEMP FOR 2.016. HOURS . -.......' ,
.__t..-..... ,
. -l
' ' , , l ,
i -
.l .__
i , _. _ . IN AIR AT ROOM TEN.P.FOR. . 7.92 HO..UR. S. _ . . . . . .
. . \
-.n... :
i -
.. ............._g._.......__ ,
PERCENT -- -. .- COMPRESSION SET . . . . . . . . . . . . . . . . . ..
;. . . . .joo . . . . . . . .. . ..... _ . _ . . _ . . _ . . . . . . . . . . .
. 90 . _ . . . . . _ _ . . . _ = - . - - . . 8A7 .- . . . . - . . . . -
......,. So . .
. . .. .. . . 70
~
. . s._. . . -- 6 0 - - - - - - - . -
50
~
3 . 40 . 357 333 - -..-. .. m F.y 30 ...
. m.
m: 20 - - --
- - - - - --- - - - a ., - - - - - - - --
' 30 - :8.67.2 IQ I
. . .. %7 E
(E , . . RADE/ HRS. jo7 8 ( 1 l1 1 CONIROL - 106 ._ 19 ..
........4 , .. . . .. .. . . . . . . . .
CO R GRF. O. 2A.
.T.! .,; . . .: i
, . . ~COV?O ' J E zO 75 .
. e .
I , .
- j. ;
* , i- .i i, ,?
...i . .
.i
. ' i .
i' . . I ,
!' I , t l . ,
i u.. .
.,. ., . i, . .. ..., . . . . . . . . . .
, - I
- l t .
, . , . . i z
; .4 ,
4 g I ,
' i .
= '
I . ,
- e : .
,. . I ,
t 4
. i .
e . 30 Y _ -. * ~ ..._.;.
v,n,a .- um u rmwpu s ggm g5 neu.g . '
- .S K
.4 s
~
~ -
. IC!.3k-(20 -
, AT 212 F(IN AIR) #i i, i, S
-- AT 248 F(IN AIR)
~
558
!a ;a n. +%
CHsNGE
. iz
- v. .:n. ; .n. .*
- g. . .. . .. .
.-- - ,t . ' .; .. !.\p -m
, . . . l l
u
.5 30 .-
I - i. l . . g g g. - o n.g
. m o nn o
m **
e
- jg! b
..,. #i -
.\ r* '
. i - io ? ..
**s
[1600RSJh- :
- D
- r : :r :? r i .
- \ CRIS.). y T \ - . .
..iP
- c :3!(; :i
\; '
ig is :
- :bi N - .. .
' i- if ;D
\
N . 5 i
- i"
- --o -
. ; i i
.\
- N -
.- 3. .. : :- :' i N. .
N' W
),, ~ ' *
,Q
- .r . m g .c.n:s o
_. *70 ' . CHANGE , w i.:
.. .' t .
t . . l-HOURS io .i
-2.0 -- .
-l ! ! .
4320 ?i S* 2160 . 168 336 720 8l ! Fi
~
TENS!LE STRENGTH MINN. RUBBER-COMPOUND 559EQ llk GRAF 3 . i! .' y ..
s ,e. .c ll('Imx,ma zP ::i:.g .': ., t 'I il 1l1 i@n '
.oM ! !. .I Q w n ...! f:i 4 b.n. .q::tn 6:- .
! i-
.?.iI ,l j, p1 ,l.
(
' , f. . ynj , . . ,
y
. v . .
s *
;; gH T
x .s e. 1-
. . . n 5
.: o.
- e
- vc;
. o o t t B n e i.a. ~u :s e
,. -- w
.m. . . g.
. . (p ._
+ HARDNESS' AT 212 F(IN AIR)
.( SHORE A' DUROMETER) , o g .
p p
. s..- : . :
- 100 -- - -
2 is in :p IP F
- 0 I ip; 1 1
._:pir :c l'F-'r .
a
;g ;g .p p.
-- ,,, _o - .
, ;p :
- r;L p
- -l i.{gx
- P' -D 90 -
.~ .- .
- i. .
p , .,:, . .
.#. i i i.
,o o -
- O g Oe .
I . - . o.m :
- ;.-H URS- ; ; .;
I . . ,
* (DRIG)80 .1 : . 4320 :
i 2ied .. ID
.o.i 720 9
168 336 - I.tPi.'C2 HARDNESS- ig i f ' MNN. RUBBER-COMF559EQ , g ijj GRA W 5
~
.. i l k :
e. g . .
sucsecr...SW%- ..%TM4L. :.. . .... - sucer m. . or -
. u..X. M. ..... . . orre .7..%\SI.
cuciou ta . .CcMEW M.EE. . . . . . . 5YST EM i. .'. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . caxo. o r . .d.@. . . . . oar e . 7.-@@.I. eno;ter no. . . .W.b. . . .%.d. . . . . . . . . .
, eno;ccr . . . .M.1.ou.g.g . . . . . . . . . . . . .
+ HARDNESS (SHORE A DUROMETER) .
. . 100-- ;.
y
- l 90 DOSAGEX 10 7 RAbS ON AIR) ,
?, . .
e0 05 .1'O 30 50 lb0 7.s .. .
~
. .- -IARDNESS ! .. ' .
l -- MIN \J. RUBBER-COMPOUND #559EQ
~
c G RA3- 6 l : ( '
% COMPRESSION Sfi . ;.
.. ,20W
. e N. 6.
10 %- -
. Db ;AGEX IO7 RADS dN AIR)
.5 TO 3'O 50 . . 10 0
.7.S ' ~
.. COMPRESSION SET
' MINN ROBBER -COM' POUND 559EQ
.GRA?_-l a
,n...-, " " " ' ~ ' ~ ' -
ev. . . .Y. M. . . . . . . . . o4T c 7:15.81.. suuacct... W S * * " " " " " " " - CUcTOMER...CMN N "' MST EM o n . o o n . n ~ ~ o ca.o. hy .MD.../.DATE.27.I.6lOl. M~ b .*~ "- * ** PRO PROJECT . . . .h.k.N N. M .g'""; "" * " l(,j- cfo ' COMPRESSION SET I . ,* 100% .. . r t 50%-- .. . . lVi 61,, O'D je g l t i g ,
! il g ' '
f I j I="~4- , f i til ! !
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ip '
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hhkRS 720 HRS. 168 ifRS 248 F 302 F
' oF . (IN AIR)
. . (I 1R) (IN AIR)
ViETHOD B_ -COMPRES$0\1 SET .
. .. MINN. RUBBER - COMPOUND"SS9EQ
.7 gqgsg g l .
. ,o
.t ) .
o ' l . - 1
** - f.s 8 f Pad 8 s-
su o x Ctr. . - m'. . . ' -:............ ~ . . . ....... . ... _
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. . . . . . . DAT C .2* $.'h. . . CUGTOMCR., .S hl.3 ? '-*3. N .h b .... . SYSTEM.....................................
CHKD. 01 PROJLCT....U.S.b.b.N.D............. PROJCCT NO. .. . .h.".hM.Ih.........
.. \
. .. \
. 96 COMPRESSION SET , .
60 ~ - 70 - - 60 - - - 50 - - - 40 .
. . . . . . .e .
,.n:
. 30 - -
.'.-6
.;.. . :. :. s. . ~
A 20 - - h398 V ,
' . . ... ; i 10 -- ' 18.1 :-
.n..f.. . . .r . .
M
- 559EQ M E740-75 PARKER -
MINN. RUBSER COMPRESS!O. N SET
' 3 hrs. 0 340 F, 3 hrs. 0 320 0F & 18 hrs. 0 250 F in 0
CE SF 96,200 Fluid (Dimethyl polysiloxanc fluid)
~ - .
as 3 hrs. 0 3400 F, 3 hrs. 0 320 F & 18 hrs. 'O 250 F ih GE SF 1154 Fluid (Methyl phenyl polysiloxonc fluid) 9q x 9..- 0 .0
WInguTUS. ......... W ., ... CY.. . .@ . . . . . . . . DM r . N SUUJCc7....- D ... N ................. ... . custoucn . .CG.dW M.4P-T+:. . . ... sysi cu : :. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . cuo. ov .H.D. . . ... our .7.:.15:81.
' eno;cci . . . .M A.W Q . . . . . . . . . . . .
esoaccr no. ..M.S.:.Sc.[4.... ....... (. 8 s ' Minn. Rubber - 559 EQ . 5t'r.a ic8 hrs. e 212oF 10' -- .. ger m.
- - ' M 'Minn. 168Rubber hrs. e 248 - 559 0 F EQ Shore A
. Acushnet - E17018 -
- 70, hrs. e 275 F, Hardness '
g7A,gogutggo Change (pts) 5-After Heat Aging
~ ~ ~ ~ " '
- 70. hrs. e 2120F
.s.x .. .
. Sv.)
4 .w ;
;;.y .s
'.i lJ 4 3 -
- Q18a LC e
s /--,M~ = 0 - GaAn g
+5090 .
~ .
nsile Str. . ,. g3 ..,
- Change (7.)
fig 3 d * . Aftcr
~
Q_s=:SQ u '-" Heat Aging
-50%
3-_
~~
7 QA
. +5096 Elongation .
O- 16.71 . l#s594 A.fter ea tat Aging ,
.q) . . . ,
- 50%
CR.6PH P r
Q he sH EET HO. . . . . . . . . . 0F . . . . . > a...Y.M.'......ouc1-15/.Bl. cucaecr . .%.@.t- . .ET.N94. - 1 sr si cu .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . cusrcutn .CcMSV!?.4E.%...:..... ! cur.o.cr.h%...ous.215..M. moatcT no. EPS. ..SC)14-mosecT...!$ A .W .9.../.... . i \ ' (' HARDNESS '
\
(S. HORE K DUROMETER) .
.. l 90' ,
= = .-=; '
W,8f E*6i
'5
~
BQF w 80 - - 80 <
. wm U -El M uw
/
80154 - i
.-?
~
W.H. Salisbur.' 559 EQ . E17018 -
~
Minn. Rubber g'pi .:.:j;;!g Acushnet : c 70 - ! 70 .i E740-75
. :Parken g -j -
. E-50 ' -
Fed-Mogur - ,
'. 60 ORGINAL PROPERTIES
.GRAW 3.
- . ~
2500 lTb..-
~
l (psi) .
.Nph 2s00 -- 2400 : gy l I.i.o.S. .e.
~
t.
- !piiG .
e,a h]h
.. ..a 2000 !f.h 2000 kf - 1 2000 - - .
2 f4 i
'4 .
., 1[He]
n i!! b[t.m: e
- Ni.!
? '
I .1600
. .n, . . .. .
.a M) M:;a-4 y
t .e c 1500 - -
'- := =.= ..=:=.
m %.1,;;;;.)c ,.t . Ipm' si:' L. : s'- x: . - .- Mt:=~= : i;? -
- s. r
> ; 1 E.2 :,,
l 'i.& 5&K l (i
, .'I . . . . . _ _ _ j l; .
p 1; ;,%,
- v. -
^= !!!.: .6 i . :.1 -,
=.- a
+w:-EE
~ ~ ~ -
aisJ
,i f, '.1000 '- _
.o
'. . TENSILE STRENGTH
- ~.- ~y y _' z-
or 73,( . . ors c . .
'flr/lZ/ mc4Lci SEAL 3.'7./Df -
Ciir.o.uv. . .o^ic .. . ... cu:.t oue n . . Corfgg,cfg-e . povea:v:;i tu : . . .... . .. ..... . .. 3 5/.57 8C/.y. PtIOJLCT . .f4 //L)f_@C . .. PHOJCCfNO. .
~
'U O 100 99 ASIM D-h5 Test s..W:tielIli n.a on - . 1 i.d. x 0.139' th:ck O-rings ,*
= 80 , .
z 70 . 2 s
,s 30 - . . , .
20 10 g) 6 - 00*F. ASTM #3 Oil 0%- ,
- - - ,__q 200 400 600 600 1.000 1.200 1,400 1.600 1.800 2.000 HOUR 5 OF EXPCSURE
\' ~
"X -
j PERMANENT DEFORtfATION RESISTANCE OF VITON J f . e s G .- e G - lh t t 'Jin 1 96
'ut. . . . AM . .ussc ff9lff cunans.s.. .SsNL. .SReOf cuctoratus..fousugg,y .guxrart s ... .'. . ....... .. ......... . ..
cuno. or . . . . . . . . . . . oss e . . . . . . . . . . . . .. )
. . . . vnoscci no. . .SP.s .~ .*fot4. . . .. i esostcs . .HtDLt9st/L) ..
N -
~ ~ : .
Long-Term Compression Set of VITON Compression set, %* At At At Time. hr.
- R.T. 300*F. (149'C.)' 392* F. (200*C.)
1,000 - 12 50 2,000 . - 16 65 4,000 21 22 79 8,000 21 32
- 98-
'ASTAt Ol')$. Method B.
ouw , 5
\ LONG TERM COMPRESSION SET OF VITON AT DIFFERENT .
TEMPERATURES 4 ED 7G -A- - l . t .
/
l0l b$h 40 l
tiv. g .oAIL.g[gq[Q cuuJtet . . ,$66%t . .jyugy,
.carc. ........ .. CucTOracii ..CCNSUMG I'N:X.JEE GYU3 L'd - -*
CHno. 01. . . . . (410JCCT. ggg gqb. , PitOJLCf NO. 5P5 .T014.. . g i
< / -_-
J l Oven Air Aging of VITON
- Temperature, Time Original i Physical ,
392*F. Properties , . 250'F. 275'F. 3co'F. , 212*F. 148'C 200'C. (dumbbe!! speciment unic>s 100*C 135'C , 1217.. 3 months 11 months 11 months 8 othenvise noted) 3 months 3 months - - l. 10500 31 %) 8100 01 % ) 100% modulus. psi 800 Ultimate tensi!c 1835 1915000 %) 202500G%) / strength, psi (0-sir.g) 1915 t 1400(41%) ' Ultimate tcrisite
- 1700(77 % )
strength, psi 2200
- Ultimate clongation, 210 210 2250 07 % ) 235012 %) ]
% (0 rint;)
145(G6%) 150fG3%) Ultimate clongation. % 220 1 y-81!107 % ) liardness, Durometer " .. ,7G(100%) 76 , j A points . [
~ _ -.
m--
) ' %-]
THE EFFECT OF OVEN AIR AGING ON SPECIFIC MECHANICAL PROPERTIES OF VI' ION AT VARIOUS TDiPERAT'JRES OVER PROLONGED PERIODS. . O o.
=G.2 ..
V . 41 n u n.. . w- . . . .
. ns...py( . . or~ ' C T//$f0 "cxsouun Ols'W DIVU{ POWB2 *'*" --
cw.t>. ut . . . . . . . . . D^' L - .
.Cou.myee ' '
enoater no. . d'P'5.-3 O I d rnoaccr ...M/DLAA/O . . ..
) ,
O) ( . byJ _
. INDEFINITE 10,000 -
Heat Resistance
. ) -
>3000 hrs. ,
>1000 hrs.
1,000 - 0 5
!5
. C :
O ' '
>240 hrs. ,
t O
- a
- O '
=
gg .-
> 431.rs.
i >
* ~
204* C. 232* C. 260*C. 257'C. 315*C. 500*F. 550*F. 600*F.
.) 400* F. 450* F.
(,,/ , TEST TEMPIRATURES
, SERVICE LIMITS OF.VITON IN AIR AT .
VARIOUS TEMPERATURES. r G'- 2-A - e x.- .
)k $I 42
' of NN -
)/
q/;g)gt:.unesh3outn..comuu52
$cnL ml POWER" S'5" " """
cuocv.. - ".oATE. " " " "
- enoscci. . u i o L A U a NtOJLC1 NO .sPs -70'4 "-
L P R'O P E R T I E S
,- P H.Y S I C
~
TENSILE STRDJGTH RADIATION DOSAGE ' HARDNESS psi ELONGATION % ERGS g-l (c) ENVIR0!eENT
- 192 66 2
' 1044 O
AIR DISINTEGRATED i ., AIR 8 7 x 1b 72 172 8 2145 , 2 x 10 76 ARGON- 63 8 742 5 x 10 ARGON 208 64.8 7 1112 .' MIL-L-7008 OIL , 8.7 x 10 211 64.4 4.4 x 108, 1028 MIL-L-7808 OIL 117 64.8 . 9~ 961 MIL-L-7808 OIL 1.7 x 10 i IRRADIATED IN AIR, " PROPERTY CHANGE IN "VITON" 60 0 ARGON AND JET 'hjRBINE OIL AT 400 F BY COPALT .
. I G. 2-3 .
e 6 . llk - 0 43 - - - -- . - . - - ... ~ . - . - . , - , - - - - - - - , . . . . - = - - , , - . - - - - - - - - - , . -
. hf. *M... .(900.~d[/7/glWIWLu e a- * -
=-=j _
... ..... CU0f uutit . . COA /,3 4//fg . $aegvu2 LM . . . .
- . Cler.U. bY . . . . . . . . DA1 L . .
MKJJCCT . . N/8/.,/94/d. . . . . . . . . . MtOJECT NO. ..ll5 F>S. .7CIM. . . t .
- R0 Hardnest Doromater A 1'400 100% Modulus".'osi .
MPa , 9.65 Tensite Strennth*, osi 1.900 . MPt. 13.10 130
' Eloncation at Break *. % ,,
Compression Set. ASTM D3958 Pellets 70 hr. ~ at 400*F (20'4 *C1 % 38
. 53 at 550*F (2E)8"C) % ,
Brittle Point. ASTM D746 "F
-35
*C *
-37*
- ASTM D412.10 in./ min. (4 2 x 10 8 m/s) .
. e GENERAL PHYSICAL PROPERTIES OF KALREZ PERELUOR0 ELASTOMER .
1 l (COMPOUND 1050) . l T ABLE- 2 e l1ll Id63 4
- l. L .
JC ob s' vv/ gy,:g/f.. : Ass . 7//9((/
- aossCT ' " " ' " ' " ' ' " ' ' '
Ltz s w L C C A/.5 U N E A -s
- d W R S " " ~ ' , ' '
. c,,go.gy :. .. ......onst... .... ....
nonct.: H igg AAsc- ,s....-
. HCAC'N- 3P3 AO l*f" ' '""'
~ -
Compression Set % Test Conditions Time KALREZ 1050 Temperature . 70'hr. 20 - 75'F (24
- C) 32 212*F (100'C) 70hr.
70hr. 71 400*F (204 *C) 70hr. . 71 450*F (232*C) . 69 500*F (260*C) 70hr. . 70hr. 74 550*F (288'C)
- ASTM D 3950
- AS.5G8A = 214 o Reg Specimens ,
Heat Agedin Air ,
. e E
~
COMPRESSION SET bF KALREZ AT DIFFERENT TEMPERATURES S l TABLE-3 . l e ga .
. .O
.O O
n<C No 4 45
as.... p g .. u~ -- - ofi sj o a . . -- -
,' cuo. ex . . ........ osse ~ .......... 'cutouw Coscussemst smu. - .~.- .
enoxcs . ..M//_~>mo . . moncino- 5P6. 30/d- . cio CO:7RESSION SET *
. ' 100 '~
90-- . 80- - 70- - GO-- 50- - 40- - 30- - 20 -- 10 -- DEGREES SHO,WN .lb) FAIlRENiIElT , 0r 15 2i2 4C 4$0~ 500" 5'50 TEMPERATURE (FOR 70 HOURS) 1 KALRrz_ .. l - (COEllF60Rb~l050) 1 -
- D G3 M '
i l . 46 hu na 4 l
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m,, ,
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i.. .... .
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KAI,REZ O _TERFT.UOROELASTOMER RADIATION RESULTS :
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- :-: ...n
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