cherne pipe plug safety manual

7/26/2019 Cherne Pipe Plug Safety Manual

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SAFETYINSTRUCTIONMANUALA Guide tothe safe andproper use ofChernePneumaticPipe Plugs

This manual covers Cherne

Pneumatic Plugs as follows:8"- 66" Single Size Test-Ball Plugs

6"- 60" Multi-Size Test-Ball Plugs

112"- 66" Single Size Muni-Ball Plugs

4"- 60" Multi-Size Muni-Ball Plugs

6"- 18" Multi-Size REMO Plugs

8"- 15" Multi-Size BIG MOUTH Plugs

6"- 60" Multi-Size AIR-LOC Plugs

WARNING

MUSTRE

ADTHIS

MANUAL

BEFORE

USINGCH

ERNE

PNEUM

ATIC

PIPEPLUGS

KEEP THIS MANUAL WITH PLUG FOR FUTURE REFERENCE

CHERNE INDUSTRIES INCORPORATED5700 LINCOLN DRIVEMINNEAP OLIS, MINNESOTA 55436-1695PHONE: 1-800-843-7584FAX: 1-800-843-7585CH

ERNE


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Dedicated to the memory

of Allen D. Mathison

1946 - 1996

NOTE: Air back-pressure ratings have been adjusted to reflect absolute back-pressure capabilities.

WARNING: Plugs must be braced while in use.


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SAFETY INSTRUCTION MANUAL INDEX (REV 12)

I. G ENERAL SAFETY AND US AG E

INS TRUC TIONS (ENG LIS H) . . . . . . . . . . . . . . . . . . . . .PAG E 5

II. ALLGEMEINE SICHERHEITS UNDBEDIENUNGS ANLEITUNGEN (G ERMAN). . . . . . . . . . . . . . . . .PAG E 6

III. SCURIT GNRALES ET INSTRUCTIONSD' UTILISATION (FRENCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 7

IV. IS TRUZIONI GENERALI S ULLAS ICUREZZA E L'US O (ITALIAN) . . . . . . . . . . . . . . . . . . . . . . . .PAG E 8

V. INS TRUCCIONES DE S EG URIDADG ENERAL Y US O (S PANIS H) . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 9

VI. (J APANESE) . . . . . . . . . . . . . . . . .PAG E 101. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 11

2. DETERMINE THE AMOUNT OF BACKPRESSURETHE P LUG MUS T WITHS TAND FOR THE J OB ORAP P LICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 12

3. DETERMINE THE US AG E TEMP ERATURE AND THEMEDIA THE PLUG MUS T WITHHOLD . . . . . . . . . . . . . . . . . .PAG E 16

4. MEASURE THE PIPE AND SELECT THE PROPER

PLUG AND RELATED EQUIPMENT . . . . . . . . . . . . . . . . . . . .PAGE 175. CLEAN PLUG AND RELATED EQUIPMENT BEFOREEVERY US E AND INSP ECT FOR DAMAG E . . . . . . . . . . . . . .PAG E 20

6. SELECT AND USE PROPER SAFETY AND PROTECTIVEEQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 22

7. RECOMMENDED SAFETY PROCEDURES FORENTRANCE INTO MANHOLES AND OTHERCONFINED SPACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 24

8. CLEAN P IP E BEFORE P LACING P LUG . . . . . . . . . . . . . . . . .PAG E 25

9. ATTACH EXTENS ION HOS E TO ENABLE P LUGINFLATION AND DEFLATION FROM OUTS IDEDANG ER ZONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 26


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10. PROPER PLUG PLACEMENT IN PIPE . . . . . . . . . . . . . . . . . .PAGE 28

11. P ROVIDE A BACKUP S YSTEM FOR S AFETY . . . . . . . . . . . .PAG E 32

12. P ROP ER P NEUMATIC P LUG INFLATION . . . . . . . . . . . . . . .PAG E 33

13. PROP ER P NEUMATIC P LUG REMOVAL. . . . . . . . . . . . . . . .PAG E 36

14. CLEAN AND INSPECT PLUG AFTER EVERY USE ANDS TORE PROP ERLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 38

15. SPECIAL CAUTION TO EMPLOYERS ANDCONTRACTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 39

16. P RODUC T US AG E DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 40

17. S P ECIAL US AG E INS TRUCTIONS FOR G RAVITY FLOWBYPAS S AP P LICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAG E 52

18. LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 54

The Cherne products des cribed in this ma nual may be c overed by o ne or more ofthe follow ing P a tents a nd trad ema rks: US P a tent Numbers 3,834,422 3,951,1734,096,977 4,274,206 4,493,344 4,588,110 4,614,206 4,763,511 4,817,671 5,035,2665,076,328 5,209,266 5,234,034 5,329,646 5,353,841 DES 300,350 DES 339,405DES 350,704 DES 351,013 DES 358,871 DES 362,713 DES 369,652 DES 370,055DES 370,715 (additiona l pa tents pend ing). Trad emark Numbers 625,158 717,948718,126 718,373 737,860 816,386 930,319 906,675 912,238 1,138,344 1,145,7211,163,062 1,276,011 1,360,285 1,428,285 1,574,687 1,559,813 1,937,973 (additionaltrademarks pending). Additional foreign trademarks are not listed.

C opyright 1991, 1992, 1998, 2000 All Rig hts Re served, C herne Indus tries Inco rporate d


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I. GENERAL SAFETY & USAGE INSTRUCTIONS

1. DEATH, B ODILY INJ URY AND/OR P ROP ERTY DAMAG E MAY RES ULTIFPLUG FAILS FOR ANY REASON.

2. READ AND UNDERS TAND THIS S AFETY INSTRUCTION MANUAL BEFOREUSING P LUG.

3. MUS TWEAR S AFETY G LAS S ES AND A HARD HAT.

4. DO NOTENTER DANGER ZONE WHEN PLUG IS IN USE.5. MEAS URE P IP E DIAMETER BEFORE SELECTING P LUG.6. INSPECTPLUG FOR DAMAGE BEFORE AND AFTER USE.7. NEVER US E A P LUG IN A P IP E S IZE DIFFERENTFROM RECOMMENDED

US AG E RANG E (REFER TO THIS S AFETY INSTRUCTION MANUAL).8. ALWAYS ATTACH AN INFLATION EXTENS ION HOS E S O P LUG CAN B E

INFLATED AND DEFLATED FROM OUTS IDE THE DANG ER ZONE.9. NEVER REMOVE THE INFLATION HOS E UNTIL ALL BACKP RES S URE IS

RELEASED AND THE PLUG IS DEFLATED.10. MUSTINFLATE P LUG TO THE P RES S URE S HOWN ON P LUG.11. ALWAYS US E P ROP ERLY CALIBRATED P RES S URE G AUG ES.12. DO NOTEXCEED RECOMMENDED MAXIMUM ALLOWAB LE

BACKP RES S URE (REFER TO THIS S AFETY INSTRUCTION MANUAL).13. ALWAYS RELEAS E B ACKPRES S URE FROM THE P IP E FIRS T, B EFORE

DEFLATING PLUG.CALL 1-800-THE-P LUG OR 1-612-933-5501 IF ADDITIONAL CLARIFICATION ISREQUIRED.

NEVER ENTER THEDANGER ZONE!THE DANGER ZONE EXISTS IN FRONTOF THE PLUGGED PIPE OPENING

IN AN AREA WHICH EXPANDSOUTWARDLY IN A CONE SHAPE.

NO!

DANGER

ZONE


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II. ALLGEMEINE SICHERHEITS UND BEDIENUNGSANLEITUNGEN1. FALLS DER S TP S EL AUS IRGENDEINEM GRUND VERS AG T, KANN DIES

ZUM TOD, ZU VERLETZUNG EN UND/ODER ZU S ACHS CHADEN FHREN.

2. LES EN SIE DIESES S ICHERHEITS HANDBUC H DURC H, UND MACHEN S IESICH MITSEINEM INHALTVERTRAUT, BEVOR SIE DEN STPSEL BENUTZEN.

3. ICHERHEITS BRILLE UND SCHUTZHELM MS S EN G ETRAG EN WERDEN.4. DIE GEFAHRENZONE DARF NICHTBETRETEN WERDEN, WENN DER

STPSEL BENUTZTWIRD.

5. MESS EN S IE DEN ROHRDURCHMESS ER, BEVOR SIE DEN S TP S ELWHLEN.

6. INSP IZIEREN SIE DEN STP S EL VOR UND NACH DEM GEBRAUCH AUFBESCHDIGUNGEN.

7. B ENUTZEN SIE AUF KEINEN FALL EINEN S TP S EL IN EINER ROHRG RS S E,DIE VOM EMP FOHLENEN EINS ATZB EREICH ABWEICHT (WIR VERWEIS EN

AUF DIESES SICHERHEITSHANDBUCH).8. B EFESTIG EN SIE IMMER EINEN VERLNGERUNGS S CHLAUCH AM S TP S EL,

UM VON AUSSERHALB DER GEFAHRENZONE DEN DRUCK ERHHEN BZW.SENKEN ZU KNNEN.

9. ENTFERNEN SIE DEN VERLNGERUNGSSCHLAUCH AUF KEINEN FALL,WENN NICHT S MTLICHER RC KSTAU FREIG ES ETZTUND DER S TP S ELENTLEERTIST.

10. DER STP S EL MUSS AUF DEN AM STP S EL ANGEG EBENEN WERTAUFG EB LAS EN WERDEN.

11. B ENUTZEN S IE IMMER ORDNUNGS G EMS S KALIBRIERTE MES S G ERTE.12. BERS CHREITEN SIE NICHT DEN EMP FOHLENEN MAXIMAL GES TATTETENRCKSTAU (WIR VERWEISEN AUF DIESES S ICHERHEITS HANDB UC H).

13. S ETZEN S IE IMMER ZUERS TDEN RCKS TAU AUS DEM ROHR FREI, B EVORSIE DEN STPSEL ENTLEEREN.

DIE GEFAHRENZONE DARF AUF KEINEN FALLBETRETEN WERDEN! EINE GEFAHRENZONEEXISTIERT VOR DER VERSTPSELTENROHRFFNUNG IN EINEMBEREICH, DER SICHKEGELFRMIG NACH AUSSENERWEITERT.

NEIN!

GEFAHREN-

ZONE


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III. SCURIT GNRALES ET INSTRUCTIONS DUTILISATION1. DES BLES S URES P HYS IQUES OU MORTELLES ETDOMMAG ES LA

PROPRIT PEUVENTTRE CAUSES SI LE BOUCHON FAITDFAUTPOURTOUTE RAISON.

2. LIRE ET COMP RENDRE CE MANUEL D INSTRUCTION S UR LA S CURITAVANTLUTILISATION DU BOUCHON.

3. TOUJ OURS P ORTOR DES LUNETTES DE SCURITETUN CAS QUEPROTECTEUR.

4. NE PAS P NTRER DANS LA ZONE DE DANGER LORSQUE LE BOUC HONEST EN US AG E.

5. MES URER LE DIAMTRE DU TUYAU AVANTDE C HOISIR LE B OUC HON.6. VRIFIER S I LE B OUC HON NES TPAS ENDOMMAG AVANTET AP RS

LUTILIS ATION7. NE J AMAIS UTILIS ER UN BOUC HON POUR UN TUYAU DE G ROS S EUR

DIFFRENTE DU CHOIX RECOMMAND (SE RFRER AU MANUELDINSTRUCTION SUR LA SCURIT).

8. TOUJ OURS FIXER UN B OYAU DE RALLONGE DE G ONFLEMENTDE FAON CE QUE LE BOUCHON PUISSE TRE GONFL ETDGONFL LEXTRIEUR DE LA ZONE DE DANGER.

9. NE J AMAIS RETIRER B OYAU DE G ONFLEMENTTANTQUE TOUTE LACONTRE-PRESSION NE SERA PAS DGAGE ETQUE LE BOUCHON NESERA PAS DGONFL.

10. GONFLER LE BOUCHON S ELON LA P RES S ION INDIQUE SUR CELUI-CI.11. TOUJ OURS UTILIS ER DE FAON AP P ROP RIE LES MANOM CALIB RS .12. NE PAS DPAS S ER LA CONTRE-PRES S ION MAXIMALE PERMIS E ET

RECOMMANDE (SE RFR AU MANUEL DINSTRUCTION SUR LA

SCURITE).13. TOUJ OURS DG AG ER LA CONTRE-PRES S ION DU TUYAU EN P REMIER,AVANTDE DGONFLER LE BOUCHON.

ZONE DEDANGER

NE JAMAIS PNTRER DANS LA ZONEMDE DANGER!LA ZONE DE DANGER SE TROUVE DEVANTLOUVERTURE DU TUYAU POURVU DUBOUCHON ET STEND EN FORME DECNE, VERS LEXTRIEUR.

NON!DANGERZONE


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IV. ISTRUZIONI GENERALI SULLA SICUREZZA E LUSO1. DECES S O, LESIONI ALLE PERS ONE E/O DANNI ALLE COS E P OS S ONO

VERIFICARSI SE, P ER UN MOTIVO QUALSIAS I, IL TAP P O P NEUMATICO NONFUNZIONAS S E CORRETTAMENTE.

2. LEGG ERE E C OMPRENDERE A FONDO IL PRES ENTE MANUALE DIISTRUZIONI S ULLA S ICUREZZA P RIMA DI US ARE IL TAP P O P NEUMATICO.

3. OB B LIG ATORIO INDOS S ARE OCCHIALI DI PROTEZIONE ED ELMETTO.4. NON INTRODURS I NELLA ZONA DI P ERICOLO MENTRE IL TAP P O

PNEUMATICO IN USO.5. MIS URARE IL DIAMETRO DELLA TUB ATURA P RIMA DI SELEZIONARE IL

TAP P O P NEUMATICO ADATTO.6. ES AMINARE IL TAP P O P NEUMATICO P RIMA E DOP O LUS O P ER RILEVARE

GLI EVENTUALI DANNI DA ESSO SUBITI.7. NON US ARE MAI UN TAP P O P NEUMATICO S U UNA TUB ATURA DI

DIMENS IONI NON ELENC ATE TRA QUELLE CONS IGLIATE (CONS ULTARE ILPRESENTE MANUALE DI ISTRUZIONI SULLA SICUREZZA).

8. COLLEG ARE S EMP RE UN TUB O DI GONFIAMENTO DI PROLUNG A IN MODOCHE IL TAP P O P NEUMATICO P OS S A ES S ERE G ONFIATO E S G ONFIATODALLESTERNO DELLA ZONA DI PERICOLO.

9. NON RIMUOVERE MAI IL TUB O DI GONFIAMENTO P RIMA DI AVERELIMINATO TUTTA LA CONTROP RES S IONE E DI AVER S G ONFIATOCOMP LETAMENTE IL TAP P O P NEUMATICO.

10. NECES S ARIO G ONFIARE IL TAP P O P NEUMATICO ALLA P RES S IONEMOS TRATA S UL TAP P O S TES S O.

11. UTILIZZARE S EMP RE MANOMETRI CORRETTAMENTE CALIB RATI.12. NON ECCEDERE LA CONTROP RES S IONE MAS S IMA CONSENTITA

(CONS ULTARE IL P RES ENTE MANUALE DI ISTRUZIONI SULLA S ICUREZZA).13. RILAS CIARE S EMP RE LA CONTROP RES S IONE DALLA TUB ATURA P ERP RIMA, P RIMA DI S G ONFIARE IL TAP P O P NEUMATICO.

NON INTRODURSI MAI NELLA ZONA DI PERICOLO!LA ZONA DI PERICOLO UNAREA CONICACHE PARTE DALLAPERTURA DELLATUBATURA DOTATA DI TAPPOPNEUMATICO, E SI ESTENDEVERSO LESTERNO.

NO!ZONA

DI PERICOLO


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V. INSTRUCCIONES DE SEGURIDAD GENERAL Y USO1. S I EL TAP ON FALLA P OR CUALQUIER RAZON P UEDE P ROVOC AR MUERTE,

LESIONES CORPORALES Y/O DAOS A LA PROPIEDAD.2. ANTES DE US AR EL TAP ON LEA Y ENTIENDA ES TA MANUAL DE

INSTRUCCIONES DE SEGURIDAD.3. DEBE US AR G AFAS DE SEG URIDAD Y CAS CO DURO.4. NO ENTRE EN LA ZONA DE P ELIG RO CUANDO ES TE EN US O EL TAP ON.5. MIDA EL DIAMETRO DE LA TUB ERIA ANTES DE S ELEC CIONAR EL TAP ON.6. INSP ECCIONE S I HAY DAOS EN EL TAP ON ANTES Y DESP UES DE

USARLO.7. NUNCA US E UN TAP ON EN UN TAMAO DE TUB ERIA DIFERENTE DEL

MARGEN DE USO RECOMENDADO (CONSULTE ESTE MANUAL DEINSTRUC CIONES DE S EG URIDAD).

8. S IEMPRE INS TALE UNA MANGUERA DE EXTENSION DE INFLACION DEMANERA QUE EL TAP ON P UEDA INFLARS E Y DES INFLARS E DES DE FUERADE LA ZONA DE PELIGRO.

9. NUNCA RETIRE LA MANGUERA DE INFLACION HAS TA QUE S E LIBERETODA LA P RES ION ACUMULADA Y EL TAP ON ES TE DES INFLADO.

10. DEB E INFLAR EL TAP ON A LA P RES ION ILUS TRADA EN EL TAP ON.11. SIEMPRE US E MEDIDORES DE P RESION CALIB RADOS EN FORMA

CORREC TA.12. NO S OB REPAS E LA P RES ION ACUMULADA PERMITIDA MAXIMA

RECOMENDADA (CONSULTE ESTE MANUAL DE INSTRUCCIONES DESEGURIDAD).

13. SIEMP RE LIB ERE LA P RES ION ACUMULADA DES DE LA TUB ERIA P RIMERO,ANTES DE DES INFLAR EL TAP ON.

NUNCA ENTRE EN LA ZONA DE PELIGRO!EXISTE UNA ZONA DE PELIGRO EN LA PARTEDELANTERA DE LA APERTURA DE LATUBERIA TAPADA EN UN AREA QUE SE

EXPANDA HACIA AFUERA EN FORMADE CONO.

NO!DE PELIGRO

ZONA


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VI.


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1. INTRODUCTION.CAREFULLY READ, UNDERSTAND AND FOLLOW THE USAGE INSTRUCTIONSOUTLINED IN THIS BOOKLET. The safety recommendations, principles andguidelines outlined in this manual apply to the use of all Cherne pneumatic pipeplugs . All Cherne products a re d es igned , eng ineered a nd inspe cted with sa fety inmind. C herne c annot c ontrol or predict the unlimited work place variables tha t c a n

a ffec t sa fety and usa ge co nditions . Therefore s a fety must be your respons ibility too !THINK AND PRACTICE SAFETY WHENEVER YOU USE A PIPE PLUG!THANK YOU FOR PURCHASING AND USING CHERNE PNEUMATIC PLUGSAND ACCESSORIES.The instructions and warnings in this manual are provided toa ss ist yo u, our customer, to receive ma ximum benefit from the s a fe use of ourproducts. This manual may be freely copied and distributed. Additional copies area vailable, at no c harge, upon reques t. If you need a dd itiona l co pies or havequestions call Cherne toll free at 1-800-843-7584 or fax toll free at 1-800-843-7585.Emergency assistance and emergency product shipment (surcharge appliesto emergency after hours shipments) is also available through the toll free1-800-843-7584 phone number 24 hours per day.

CHERNE WISHES TO EXPRESS THANKS TO THOSE WHO HAVECONTRIBUTED TO THIS MANUAL. If you have sugg estions on how we ca nimprove this manual or have additional data you think would be pertinent that shouldbe add ed , please ca ll Cherne to ll free a t 1-800-843-7584.CHERNE PROVIDES TRAINING ASSISTANCE. If your organization (eg. UnionS cho ol, Tec h Scho ol, Sewage Dis trict, Tra de Organiza tion, e tc .) provides tra ining o na topic such as testing, product safety or a related topic, please contact us for help.Cherne will provide free training materials (eg. copies of testing standards, productcatalogs, Safety Instruction Manuals, specification sheets, safety tags, etc.) to assistyour presentation. Upon req uest, a co mpa ny representa tive may a ss ist in thepresentation. Call Cherne toll free at 1-800-843-7584 to further discuss this

assistance.

WARNINGAN INHERENT DANG ER EXIS TS WITH ALL INFLATABLEPRODUCTS, ANY PRESSURIZED PIPELINE OR OTHER PRESSURECONTAINMENT S YSTEMS! Every pneuma tic p lug , like tires , w ill eventua lly w ea r outa nd fail from co ntinued us e. Abus e a nd misus e w ill grea tly a cc elerate this failure.Always protect against the eventuality of plug failure to prevent injury and propertyda ma ge . If any c onditions exist w ith eq uipment that ma y jeopa rdize the s a fety ofyourself or others or if you are unsure about proper use, DO NOT USE THEEQUIP MENT. If you ha ve a ny q ues tions or think a ny unusua l cond itions exist tha t

a re no t des cribe d in this bo oklet, c ons ult your superviso r or sa fety direc tor be foreproceeding. FAILURE TO C OMP LY WITH THES E S AFETY INS TRUCTIONS ORTHOS E OF OS HA AND YOUR FEDERAL, S TATE OR LOC AL GOVERNMENTS , MAYRES ULTIN DEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!


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2. DETERMINE THE AMOUNT OF BACKPRESSURE THEPLUG MUST WITHSTAND FOR THE JOB OR APPLICATION.DETERMINE THE MAXIMUM BACKPRESSURE (the differential fluid pressure, eithera ir or liquid, res tra ined by the plug) the plug must withsta nd b efore se lecting a plug.WATER BACKPRESSURE (hydrosta tic ba ckpressure) is mea sured in either feet-of-

head (fluid height above centerline of the plug) or PSIG (Pounds Per Square InchGauge). AIR BACKPRESSURE (pneumatic backpressure) is measured in PSIG(Pounds Per Square Inch Gauge).

MAXIMUM ALLOWABLE BACKPRESSURE for each Cherne pneumatic pipeline plugis clearly outlined in the da ta sec tion of this manual, Cherne ca talogs and product spec-ifica tion s heets . Maximum backpressure ra tings listed are for plugs insta lled in clea n,dry pipe of nominal size. Usage of plugs in pipeline that varies from these conditionsmay reduce maximum allow able backpress ure.MAXIMUM BACKPRESSURE RATING - AIR VERSUS WATER. Pipeline plugs willnormally hold (withsta nd) nearly eq ual ba ckpressure for wa ter pressure (hydrosta ticpressure) or air pressure (pneumatic pressure). However, extra caution must be givenwhen using a plug in an air pressure application. Restraint of air pressure is more likelyto cause a pipeline plug to dislodge at high velocity.

EQUAL BACKPRESSURE MAY BE RESTRAINED FROM EITHER THE FRONT ORTHE BACK OF THE PLUG. VACUUM IS NEGATIVE PRESSURE. A plug's maximumallowable backpressure rating is independent of the direction the backpressure is applied.This also includes pressure caused by a vacuum which is equivalent to a negative pres-sure in the direction of the vac uum. Eac h 1 Hg (Mercury) of vacuum is approximately-0.5 PSIG of pressure. If pressure exists on one side of the plug and vacuum on the otherside, the forces must be added to ca lculate total backpressure. A vacuum may be createdby pumping water from either side of the plug and not venting the evacuated area.NEVER ENTER THE DANGER ZONE. The approximate Danger Zone exists in front ofthe plugged pipe opening in an area which expa nds outwa rdly in a cone sha pe. TheDanger Zone includes the entire area where a pipeline plug, any portions (fragments)

thereof and/or any media (ba ckpressure) res trained by the pipeline plug may be ejectedfrom the pipeline should the plug rupture or dislodge for any reason. Although theDanger Zone described applies to normal usage conditions, the foreseeable DangerZone increases as inflation pressure is increased, as backpressure builds and by possi-ble ricochet effects from pipes , walls or other objects in the Da nger Zone. The a rea offoreseeable Danger Zone may be reduced by the use of a backup system (refer toSection 11 of this manual).

WATER BACKPRESSURE

WATER COLUMN IN FEETABOVE PIPE CENTERLINE

WATER

AIR BACKPRESSURE

PSIG

BACK

PRESSURE

DANGER

ZONE

DANGER

ZONECL


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DANGER

ZONE

DANGER

ZONE

TOSEWER

ATTACH A CLEARSIGHT TUBE TO

MUNI-BALL PLUG

BY-PASS TUBE

WATER

WATER HEIGHT

DANGER

ZONE

5'

4'

3'

2'

WATER

SOME

APPLICATIONS

ALLOW DIRECT

MEASUREMENT

OF WATERHEIGHT

ATTACH CALIBRATED

PRESSURE GAUGE TO

MUNI-BALL PLUG

BY-PASS TUBE

GAUGE PORT READING MUST

BE CORRECTED FOR HEIGHT

ABOVE PLUG CENTERLINE.

WATER

DANGER

ZONE

PIPE

CL

A CALIBRATED PRESSURE

GAUGE CAN REMOTELY

PROVIDE ACCURATE AIR

BACKPRESSURE

MEASUREMENT

CL

- 8

- 7

- 6

- 5

- 4

- 3

- 2

- 1

AIR

DANGER

ZONE

DANGERNEVER ENTER INTO THE FORESEEABLE DANGER ZONE WHENA PNEUMATIC PLUG IS INFLATED EVEN IF NO BACKPRESSURE EXISTS IN THE PIPE! IFYOU OR ANYONE ELSE IS IN THE DANGER ZONE AND THE PLUG FAILS ORDISLODGES FOR ANY REASON, FAILURE TO HEED THIS WARNING MAY RESULTINDEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!

MONITOR BACKPRESSURE DURING PLUG USE. Monitor wa ter backpressure bya ttaching a ca librated pressure g a uge or a vertica l sight tube to the bypa ss of aMuni-B a ll plug. A ga uge must b e loc a ted a t pipe c enterline to a cc ura tely mea surewa ter pressure. Other a pplica tions ma y a llow direc t mea surement of the wa tercolumn height restrained by the plug. Air backpressure can be monitored bya ttachment of a ca librated pressure g a uge to the plug bypa ss port using a nextention hos e. This a llow s a cc ura te ba ckpressure read ings from a remote loc a tionoutside of the Danger Zone.


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WATER WILL ACCUMULATE BEHIND ANY PLUG BLOCKING A FLOWING LINE.The flow will gradually increa se the w a ter co lumn height be hind the plug. P rior toinstalling a plug, the user must determine the maximum water height that maya cc umula te during plug use.

HOW TO CALCULATE PIPELINE FORCES AND PRESSURES.

A. MEASURE THE INSIDE DIAMETER OF THE PIPELINE IN INCHES.

B. DETERMINE THE MAXIMUM BACKPRESSURE. Air pressure is measured inP S IG (P ounds P er Sq uare Inch G auge). Wa ter pressure is ca lcula ted b y de terminingthe height of water column in feet above the center line of the pipe. Water height ismultiplied by (0.43) to yield w a ter pres sure in P S IG. A FEET-OF-WATER-HEAD TOP S IG co nversion ta ble is a lso provided (see Ta ble 1, next pa ge ).C. CALCULATE THE PIPE AREA IN SQUARE INCHES. Area of a circle (squareinches) = [Diameter (in inches ) x Diameter (in inches) x 3.1416 (pi)] /4.D. CALCULATE THE FORCE THE PLUG MUST WITHSTAND. FORCE = P IP EAREA (in square inches) x PRESSURE (PSIG).EXAMPLE: A plug must hold a (10) foot column of water above the centerline of a60 diameter pipe.P IP E AREA = [60 (dia .) x 60 (dia .) x 3.1416 (pi)]/4 = 2,827 sq uare inche s.P RESS URE = 10 Feet of Wa ter x 0.43 P S IG /Foot = 4.3 P S IGP IP E AREA (2,827 sq uare inches ) x P RESS URE (4.3 PS IG ) = FORCE = 12,241pounds.

WATER

DANGER ZONE

BRACING

DETERMINE MAXIMUM

WATER HEIGHT THAT MAYACCUMULATE ABOVE PIPE CENTER

CL

INFLATION

PRESSURE

GAUGE

READ BACK

PORT


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15

CONVERSION TABLEFEET-OF-WATER-HEAD TO PSIG (Pounds Per Square Inch Gauge)

FT.-OF-HEAD PS IG FT.-OF-HEAD P SIG FT.-OF-HEAD P SIG FT.-OF-HEAD P SIG

1 . . . . . . . 0.43 16. . . . . . 6.93 31. . . . . 13.42 46 . . . . .19.922 . . . . . . . 0.87 17. . . . . . 7.36 32 . . . . .13.86 47 . . . . .20.353 . . . . . . . 1.30 18. . . . . . 7.79 33 . . . . . 14.29 48 . . . . .20.784 . . . . . . . 1.73 19. . . . . . 8.23 34. . . . . 14.72 49 . . . . .21.225 . . . . . . . 2.16 20. . . . . . 8.66 35. . . . . 15.15 50 . . . . .21.656 . . . . . . . 2.60 21. . . . . . 9.09 36. . . . . 15.59 51 . . . . .22.087 . . . . . . .3.03 22. . . . . . 9.53 37 . . . . . 16.02 52 . . . . .22.528 . . . . . . . 3.46 23. . . . . . 9.96 38. . . . . 16.45 53 . . . . .22.959 . . . . . . . 3.90 24. . . . . 10.39 39. . . . . 16.89 54 . . . . .23.3810 . . . . . . 4.33 25. . . . . 10.82 40. . . . . 17.32 55 . . . . .23.8211 . . . . . . 4.73 26. . . . . 11.26 41. . . . . 17.75 56 . . . . .24.2512 . . . . . . 5.20 27. . . . . 11.69 42. . . . . 18.19 57 . . . . .24.6813 . . . . . . 5.63 28. . . . . 12.12 43. . . . . 18.62 58 . . . . .25.11

14 . . . . . . 6.06 29. . . . . 12.56 44. . . . . 19.05 59 . . . . .25.5515 . . . . . . 6.49 30. . . . . 12.99 45. . . . . 19.49 60 . . . . .25.96

WARNINGNEVER EXCEED THE P LUGS B ACKPRES S URE RATING!Maximum recommended backpressure ratings listed are for plugs installed in clean,dry pipe. Other pipe c onditions, such as a pipe w ith deb ris or foreign s ubsta nces onits surface, may significantly reduce backpressure holding capabilities. Harmfulforeign substa nces ma y include g rea se , mold, a lga e, sa nd a nd/or a ny other ma teria lthat prevents solid contact between the plug and the pipe wall. Pipe made from

material having a low coefficient of friction, such as polyethylene, or new pipe havingtra ces of relea se ag ent used as part of the manufac turing proc ess may a lso reducethe backpressure holding capabilities. Corrugated piping will also reducebackpressure holding capabilities (by 50%see page 18). IF SUCH CONDITIONSEXIS T, IMMEDIATELY NOTIFY YOUR S UP ERVIS OR OR S AFETY DIREC TOR ANDTAKE AP P ROP RIATE C ORREC TIVE ACTION SUC H AS CLEANING B EFOREPROCEEDING! FAILURE TO HEED THIS WARNING MAY CAUSE PLUGDISLODG EMENTWHICH MAY RES ULTIN DEATH, S ERIOUS BODILY INJ URYAND/OR PROPERTY DAMAGE!

WARNING TREMENDOUS FORCES MAY BE RESTRAINED INSIDE OFAND B Y P IP ELINE P LUG S WHEN THE P LUG S ARE INFLATED AND US ED! Tota lforce exerted on a pipeline plug is directly proportional to both the pressure and thepipeline area (refer to formula and example, page 14). ANY BARRIER OR BLOCKINGDEVICE USED TO RESTRAIN THE PLUG IN A PIPELINE MUSTBE PROPERLYDES IGNED AND CONS TRUCTED TO S AFELY WITHS TAND THE HIG H FORCESINVOLVED! FAILURE TO USE PROPER BRACING MAY RESULTIN DEATH,S ERIOUS B ODILY INJ URY AND/OR P ROP ERTY DAMAG E (S EE PAG E 32)!

TABLE 1


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3. DETERMINE THE USAGE TEMPERATURE AND THEMEDIA THE PLUG MUST WITHHOLD.

TEMPERATURE RATING. Mos t sta nda rd C herne na tura l rubber pneumatic plugsa re d es igned for use a t temperatures from 0 to + 125 DEGREES F. (-18 to + 52DEGREES C .). Using a plug a t a temperature below this minimum may c ause theplug to stiffen, resulting in incomplete pipe contact, and the plug may dislodge whenba ckpress ure is a pplied. Usa ge at temperatures a bove this ma ximum may da mag ethe plug bod y a nd the plug may rupture d uring infla tion a nd/or use . If the a pplica tionreq uires temperatures outs ide of these limits , c a ll Cherne to ll free a t 1-800-843-7584for recommendations.USE OF PLUGS WITH CHEMICALS. Cherne offers a line of chemically resistantpipe plugs and also fabricates custom plugs. If a plug is to be used in chemicalenvironments, ca ll Cherne toll free a t 1-800-843-7584 for reco mmend a tions .

WARNINGMOS TS TANDARD CHERNE P NEUMATIC P LUG S AREDESIGNED FOR USE WITH AIR AND WATER ONLY AND MUSTONLY BE USEDWITHIN THE DESIGNATED TEMPERATURE RANGE! Use with other media or attemperatures outside of designated range may cause the plug to fail. PLUGFAILURE MAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY AND/OR P ROP ERTYDAMAGE!


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4. MEASURE THE PIPE AND SELECT THE PROPERPLUG AND RELATED EQUIPMENT.

EVERY PIPELINE PLUG HAS A MINIMUM AND MAXIMUM SEALING SIZE RANGEAND A MAXIMUM ALLOWABLE BACKPRESSURE RATING. The allowable sealing sizeusage range and maximum allowable backpressure are outlined in the data section of thismanual, Cherne catalogs and specification sheets. Nominal plug size is clearly marked onthe produc t. However, certain types a nd c las ses of pipe ma y ha ve a ctual inside diam etersthat vary c ons ide ra bly from nomina l diame ters a nd m a y, therefore, b e la rge r or sm a llerthan the plugs sealing size usage range.

MEASURE THE INSIDE DIAMETER OF THE PIPE. VERIFY THE DIAMETER IS WITHINTHE PLUG'S RECOMMENDED SEALING SIZE USAGE RANGE. NEVER EXCEEDMAXIMUM ALLOWABLE BACKPRESSURE. VERIFY THAT THE P ROJ EC TEDBACKPRESSURE IS WITHIN THE PLUG'S MAXIMUM ALLOWABLE BACKPRESSURERATING .

PNEUMATIC PLUGS ARE ONLY RECOMMENDED FOR TEMPORARY SEALING.Pneumatic pipeline plugs are to be used only for the few hours that are necessary toperform a tas k! If a pneuma tic plug m ust b e us ed for extended period s, the infla tionpress ure m ust be C HECKED AND ADJ US TED (IF NECES S ARY) EVERY FOUR HOURS .C erta in C herne plugs a re ma de w ith an infla tion port and a rea d b a ck port, offering a neasier method to monitor inflation pressure (contact Cherne toll free at 1-800-843-7584or fax toll free a t 1-800-843-7585 for a list of thes e p lugs ). Over time, a sm a ll volume ofa ir will lea k throug h the elas tom eric (rubb er) b od y o f every pne uma tic plug. The los t a irmust be replac ed or under-infla tion m a y result a llow ing the plug a nd a ny med iares tra ined to d islodg e from the pipe. A reg ula ted pres sure s ource ma y b e perma nentlya ttac hed to the plugs infla tion inlet po rt a s a n a lternative to period ica lly c hecking a ndadjusting the inflation pressure. Consult with a registered professional engineer for theconstruction and maintenance of such a pressure regulated inflation source or use aC herne Remo te Infla tion C ontrol P a nel (refer to d es cription o f pa nel and w a rnings in

S ec tion 12 of this ma nual if you a re c ons tructing a reg ula ted pres sure so urce ). For longterm or permanent usage, a Cherne mechanical plug is recommended. Call Cherne tollfree at 1-800-843-7584 for recommendations.

PNEUMATIC PLUGS VERSUS MECHANICAL PLUGS. Pneumatic plugs have manya dva ntag es o ver mec ha nica l plugs . They normally have a much w ide r se a ling rang e thanmechanical plugs. Some pneumatic plugs may even be used in multiple sizes of pipes.P neuma tic plugs ea sily s ea l minor imperfections in pipe a nd ca n s ea l non-circula r pipeshapes. Pneumatic plugs normally have a long contact area with the pipe which minimizeslea kag e in roug h or porous p ipe. They a lso ca n be infla ted a nd d efla ted from a remo teloca tion out of the Danger Zone and ca n be p ositioned in ma ny areas that a re nota cc ess ible to mecha nica l plug use. Mechanica l plugs have the a dva ntag e of not relying o n

infla tion press ure to provide proper s ea ling a nd a re a be tter choice for long term o rpermane nt usa ge . When the p lugg ing a pplica tion req uires a minimum s ea ling leng th, ana rrow mec ha nica l plug m a y b e the o nly via ble option, a s prope r insta lla tion o f a longpneumatic plug may not be possible. Mechanical plugs generally have a much shortersealing length requirement.


18/5718

CORRUGATED PIPE. Pneumatic plugs may be used in corrugated pipe. However,the plug will not fully fill the pipe corruga tions , resulting in reduced conta ct a rea .Maximum allowable backpressure, therefore, must be reduced by 50% (eg. a plugnormally rated for 30 feet of backpressure must be derated to 15 feet). Minor medialeakage may still result along the longitudinal pipe construction seams. When a plugis used in spiral type corrugated pipe, a section of corrugations must be filled with ama teria l such as cement g rout to prevent major lea ka ge a round the s pira ls.

PLUGS MAY NOT TOTALLY SEAL SOME TYPES OF PIPE. When pipes haverough or very uneven surfaces, such as brick lined pipe, the plug may allow minorleakage of the restrained media. Some concrete pipe is very porous and media mayleak past the plug through the pipe itself. The surface of the pipe may need to beco ated with sea la nt to prevent such lea ka ge. Other concrete pipe has a ca st in pla ceplas tic liner, a nd lea kag e may occ ur under the liner. The edg es of the pla st ic linerma y require c a ulking to provide a lea k free sea l. Other pipe w ith sharp (90) co rners ,longitudinal seams or defects may provide a leakage path past the plug. DO NOTattempt to prevent the leakage described above by over-inflation of the plug. Over-inflation will not provide a better seal and the plug may rupture catastrophically anddislodge at high velocity. Such leakage may only be minimized or eliminated by

mec hanica lly blocking the leakag e pa th with ma teria l such as ca ulk or cement g rout.

OTHER PIPE SHAPES. P neumatic plugs may also be used to bloc k pipes that havenon-circular cross sections (eg. elliptical, arch or rectangular). Measure the pipe andca ll Cherne to ll free a t 1-800-843-7584 for recommend a tions for your applica tion. Asta nda rd plug or fabrica tion of a custom s ized product ma y be reco mmended.Cherne can quickly determine what plug will best meet your performancerequirements.

MEASURE INSIDE PIPEDIAMETER ANDSELECT THEPROPERPLUGSIZE

PNEUMATIC PLUGS

MAY BE USEDTO BLOCK OTHERPIPE SHAPES


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DETERMINE THE TYPE OF PNEUMATIC PLUG REQUIRED. Cherne offers a w idevariety o f plug types including:a . B loc king type pneuma tic plugs (Tes t-Ba ll plugs ).b. P lugs for sea ling w yes (Long Tes t-B a ll plugs a nd MS2 Long Tes t-Ba ll plugs ).c. P lugs for sea ling tes t tees (Clean-Sea l plugs ).d. P lugs with a b ypa ss throug h the plug (Muni-Ba ll plugs ).

e. P lugs with maximum bypa ss size for gravity flow bypa ss a pplica tions (Big-Mouth Flow Throug h plugs).

f. P lugs for remo te placement (REMO plugs ).g. Plugs (large diameter) capable of fitting through small diameter openings

(Uretha ne Tes t-Ba ll a nd Muni-Ba ll P lugs ).h. P lugs for a ir testing s ew er lines (AIR-LOC plugs ).NOTE: Refer to Section 13 of this manual to determine what method will be used toremove backpressure before plug deflation. Then select the necessary plug(s) andrela ted eq uipment. Many s izes of plugs a re a vaila ble in several prod uctco nfigurations optimized for spec ific a pplica tions . C onsult your ca talog, Cherne

dea ler or c a ll Cherne to ll free a t 1-800-843-7584 for rec ommenda tions .

WARNINGNEVER ATTEMPTTO USE A PLUG PRODUCTIN A PIPES MALLER OR LARG ER THAN THE RECOMMENDED S EALING S IZE US AG ERANGE! Media leakag e, product fa ilure a nd/or plug d islodgement ma y res ult. P LUGFAILURE OR DISLODG EMENTMAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URYAND/OR PROPERTY DAMAGE!

CAUTIONCHECK THE PRESSURE RATING OF THE PIPE TO BES EALED. The p ipes internal press ure rating must exc eed the infla tion press ure forthe pneumatic plug s elec ted for use. A plug b od y ma y exert a force o n the pipe w a llnearly equal to the inflation pressure. Damage to the pipe, such as breakage, mayoccur if the pipe has a lower pressure rating than the plug's inflation pressure.S pec ia l ca ution s hould be used with brittle p ipe s uch a s clay o r non-reinforcedconcrete if a plug is used before the pipe is properly backfilled.


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5. CLEAN PLUG AND RELATED EQUIPMENT BEFOREEVERY USE AND INSPECT FOR DAMAGE.

CLEAN PLUG. P neuma tic plugs ma y be cleaned w ith a so lution of mildde terg ent a nd w a ter. After clea ning, flush the plug w ith c lea n w a ter and a llow itto air dry thoroughly before use.

INSPECT PLUG AND RELATED EQUIPMENT. C a refully inspec t the pneuma ticplug a nd a ll rela ted eq uipme nt for indica tions of w ea r or deterioration prior toea ch use . The plug ma y be infla ted slig htly (1 P S IG - refer to w a rning onfollowing page) to aid in the inspection process. After inflation, apply a solution ofw a ter a nd d eterge nt to the eq uipment or submerge the product completely underwater as an aid in locating leaks. Bubbles will form at the site of any air loss.Look very ca refully for evide nce that a ny ma teria l of the plug a ss emb ly a ndrela ted eq uipment ha s b een d a ma g ed , wea kened o r is miss ing. The inspe ctionshould inc lude but no t be limited to looking for:a. Cuts.b. Abrasions.c. Punctures.d . P res enc e of a p roper infla tion s ource (refer to Sec tion 12 of this ma nua l).e. Bulges.f. Crac ked ca stings .g . S oftening of elas tomer (rubb er).h. C ra cks in ela sto mer (rubb er).i. Corrosion.j. Loos e, co rrod ed or da ma g ed fittings .k. Lea ks from or da ma g e to infla tor a ss emb ly.l. Lea ks from or da ma ge to infla tion extension hoses .m. Dirt or debris lodged in the inflator valve which may cause a slow inflation leak.n. P rotec tive infla tor ca p in pla ce.

o. An ora nge w a rning ta g a ttached the to plug. Repla cem ent ta gs a re a vaila blea t no cha rge , upon req uest. C a ll C herne toll free a t 1-800-843-7584 and a skfor a Wa rning Ta g .

p. A co py of this S a fety Instruction Manua l to a cc ompa ny plug for userreference. NOTE: Call Cherne toll free at 1-800-843-7584 to request themost current revision of the S a fety Ins truction Manua l. Additiona l a pplica tioninforma tion, instructions a nd w a rnings a re pe riod ica lly a dd ed a s Chernebe co mes a w a re o f such informa tion. Add itiona l Manua l co pies a re a vaila blefrom Cherne, at no charge, upon request.

q . Loose or da mag ed banding clamps .r. Eye bolts, cha in a nd ring or tether a tta chment in loc a tion.s . Infla tor valve core in pla ce, properly tightened a nd lea k free in the

inflation fitting.t. P res ence of a properly ca librate d infla tion pres sure ga uge to a cc ura tely

determine inflation pressure (refer to Section 12 of this manual).IF ANY EVIDENCE OF DAMAG E, DETERIORATION, MISS ING COMP ONENTS ,WARNING TAG /MANUAL LOS S , OR EXCES S WEAR IS OB S ERVED, CONS ULTYOUR LOC AL CHERNE DEALER OR REP RES ENTATIVE AND MAKEARRANG EMENTS TO RETURN THE P RODUC TFOR INSP ECTION OR DES TROY


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THE PRODUCT (cut, puncture o r otherwise disable the disc a rded product to preventany inadvertent use and subsequent failure) AND REPLACE ITWITH A NEW PLUGOR RELATED P LUG EQUIPMENTBEFORE P ROC EEDING. IF YOU ENCOUNTEROR OBSERVE ANY UNUSUAL CONDITIONS THATARE NOTEXPLAINED HERE,REMOVE THE PLUG OR EQUIPMENTFROM SERVICE AND NOTIFY YOURSUPERVISOR OR SAFETY DIRECTOR.

WARNINGNEVER ATTEMP TTO CLEAN A P NEUMATIC P LUG WITHS OLVENTS OR P ETROLEUM P RODUCTS ! This ma y ca use se vere d a ma ge to theplug. The da ma ge ma y be b elow the plug surfac e a nd not be ob vious d uringinspection. THE P LUG MAY FAIL UP ON INFLATION OR US E RES ULTING IN

DEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!

WARNINGDO NOTINFLATE PLUG IN EXCESS OF ONE (1) PSIGWHEN PLUG IS NOTIN A PIPE! Plugs are designed only to be fully inflated whenproperly positioned in a pipe. THE PLUG MAY FAIL RESULTING IN DEATH,S ERIOUS B ODILY INJ URY AND/OR P ROP ERTY DAMAG E!

WARNINGFAILURE TO CAREFULLY INSPECTEQUIPMENTBEFOREUS E MAY CAUSE P LUG RUP TURE OR DISLODGEMENTWHICH MAY RES ULTINDEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!

INSPECT PLUG

FOR DAMAGE

BEFORE AND

AFTER USAGE


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6. SELECT AND USE PROPER SAFETY ANDPROTECTIVE EQUIPMENT.

NOTE: When plug use requires entry into a manhole or other confined space, it isimportant to refer to Section 7 of this manual.SECURE THE JOB SITE. Eac h job site must b e eva luated to determine proper

sa fety proc edures a nd e q uipment. It is extremely important to a llow onlyexperienced personnel to function in this decision-making capacity. If necessary,place ba rriers suc h as tra ffic co nes to reroute ped es tria n and vehicle tra ffic and toprevent entry into work area. NEVER allow unauthorized or untrained individualsinside the w ork perimeter. NEVER lea ve a pneuma tic plug unatte nded in aunsecured loc a tion. P edes tria ns or curios ity s eekers ma y ina dvertently enter into theDanger Zone. Vandalism or tampering with a pneumatic plug and accessories mayresult in plug failure or dislodgement.

WEAR NECESSARY SAFETY EQUIPMENT. This includes sa fety gla ss es , a hardhat, ea r protec tion, protective footw ea r and a ll other neces sa ry protective c lothinga nd eq uipment. S a fety eq uipment a nd c lothing req uired will depend upon theenvironment in which the product is used.

SECURE THE J OB SITENEVER LEAVE A PLUG

UNATTENDED


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WARNING FAILURE TO USE PROPER SAFETY EQUIPMENTOR TOS ECURE THE J OB S ITE MAY RES ULTIN DEATH OR S ERIOUS BODILY INJ URY!

WEARSAFETY

GLASSES

WEARHARD

HAT

WEARHEARINGPROTECTION

WEARSAFETYBOOTS


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7. RECOMMENDED SAFETY PROCEDURES FOR ENTRYINTO MANHOLES AND OTHER CONFINED SPACES.

A. COMPLETE THE PROPER CONFINED SPACE ENTRY PERMIT.

B. EQUIP YOURSELF WITH THE NECESSARY SAFETY EQUIPMENT forentrance into the manhole or confined space. This may include, but not be limited

to, the follow ing reco mmended eq uipment:a. S afety Hat.b. Safety Glasses.c . Respirator With S elf Conta ined Air Source.d. S a fety Harness , Ca bles and S afety Winching S ystem.e. Sa fety Shoes or Boots.f. Protective Gloves.g. Ear Protection.h. Hazardous Gas Detector and Oxygen Monitor.i. Confined S pa ce Ventila tion Equipment.j. Protective Clothing.k. S afety Lad ders.l. Any Other Rec ommended or Req uired Eq uipment.C. ENSURE THAT EQUIPMENT MEETS OR EXCEEDS MINIMUM

REQUIREMENTS of a ll applica ble regula tory g uide lines . All equipment should beproperly maintained, stored, calibrated (if necessary) and inspected prior to eachuse, in c omplia nce with a pplica ble regula tions and eq uipment ma nufa cturersrecommendations.

D. THOROUGHLY CHECK FOR HAZARDOUS GASSES AND PROPER OXYGENLEVELS (oxyg en 20% minimum) a t a ll levels before entering a confined spa ce .Co ntinuously monitor these levels when w orkers a re in a c onfined spa ce .

E. VENTILATE CONFINED SPACE before entry and continuously ventilate whenanyone is in the confined space.

F. USE PROPER RETRIEVAL EQUIPMENT AND CO-WORKER ASSISTANCE. Allpersonnel must be properly trained in the s a fety req uirements for ac cess toconfined spaces.

IF YOU ENCOUNTER OR OBSERVE ANY CONDITIONS THATARE NOTEXPLAINED HERE OR ARE NOTFULLY UNDERSTOOD BY YOU, NOTIFY YOURSUPERVISOR OR SAFETY DIRECTOR BEFORE PROCEEDING.


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WARNING THESE RECOMMENDATIONS ARE TO BE USED AS AGENERAL GUIDELINE ONLY! Although Cherne recommends these guidelines, itdo es not w arrant, represent or as sume a ny respons ibility that theserec ommenda tions will fulfill a ll a pplica ble Federal, S ta te o r Loc a l req uirements.Cherne assumes no liability for either personal injury or consequential damagesresulting from the reliance on these recommendations. ITIS THE PRODUCTUSERSRES P ONS IBILITY TO READ AND COMP LY WITH ALL AP P LICABLE REG ULATIONS .Refer to Co de Of Fede ra l Reg ula tions, C FR P a rt 1926 and a ll other pertinentFederal, State and Local regulations. FAILURE TO COMPLY WITH ALLREQUIREMENTS MAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY AND/ORS UB S TANTIAL FINANCIAL P ENALTIES !

8. CLEAN PIPE BEFORE PLACING PNEUMATIC PLUG.PROPERLY CLEAN THE PIPELINE BEFORE INSTALLING A PNEUMATIC PLUG.Clean a ny debris o r foreign s ubsta nces which ma y reduc e backpressure holdingca pa bility from the pipe b efore the plug is insta lled. S uch foreign subs tances ma y

include g rea se , mold, a lga e, sediment, sea shells, c oral, sa nd a nd/or any otherma teria l that prevents so lid c onta ct b etw een the plug a nd the pipe wa ll. C lea ningmethods ma y include us ing a high press ure c lea ner or by us ing a w ire b rushfollow ed with a w a ter flush. Remove a ny sha rp ob jec ts tha t may puncture plug uponinfla tion. If any d eb ris rema ins in the pipe, it may ca use the plug to sea l improperlyor ca use d ama ge to the plug upon infla tion.

WARNINGFAILURE TO PROPERLY CLEAN PIPE MAY CAUSE PLUGDISLODG EMENTOR P LUG FAILURE WHICH MAY RES ULTIN DEATH, S ERIOUSB ODILY INJ URY AND/OR P ROP ERTY DAMAG E!

CLEAN PIPE BEFORE

INSTALLING PLUG

A WIRE

BRUSH AND

WATER FLUSH

MAY BE USED


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9. ATTACH EXTENSION HOSE TO ENABLE PLUGINFLATION AND DEFLATION FROM OUTSIDETHE DANGER ZONE.

SELECT AN INFLATION EXTENSION HOSE AND OTHER ACCESSORIES.Cherne sells inflation extension hoses from two to twenty feet (2-20) long and

lifting/inflation hoses (Poly-Lift Lines) from ten to forty feet (10-40) long. Poly-LiftLines are available with a single inflation hose or a dual hose configuration allowinga ttac hment of a ga uge to co ntinuously monitor infla tion pressure when use d w ithdual port plugs. Many of Chernes larger pneumatic plugs are supplied with aseco nd a cc ess port into the plug infla tion a rea (co ntac t C herne to ll free a t 1-800-843-7584 for a list of p lugs eq uipped with read ba ck po rts). This add itiona l portallows attachment of a calibrated pressure gauge which provides continuous andaccurate measurement of inflation pressure. The length and type of inflationextension hos e needed will vary depe nding upon job site conditions but it must b eof sufficient length to allow plug operation from outside the Danger Zone. Whenusing a larger pneumatic plug, always secure a tether line to the plugs eyebolt(s) orother attachment point(s) before use. This will assist safe plug placement and plugremo val. It a lso helps prevent inadvertent los s of the plug in a pipeline. A P oly-LiftLine w ith tether rope a nd a nchor hooks is des igned for this purpos e. Ensure tha t a nyother tether se lec ted has sufficient strength to sa fely support the w eight o f the pluga nd a cc esso ries . Infla tion extension hoses and P oly-Lift Lines ca n be intercha ngedbetw een va rious sizes a nd s tyles of pneuma tic pipe plugs or linked tog ether to a llowopera tion from g rea ter dista nces . Add itiona l optiona l acc ess ories a llow plugs to b eoptimized for specific job requirements. Call Cherne toll free at 1-800-843-7584 forrecommendations.

SELECT AN INFLATION EXTENSION HOSE / POLY-LIFT LINE

AND OTHER PLUG ACCESSORIES

SINGLE HOSEPOLY-LIFTINFLATION LINE

SELECT PROPERLYCALIBRATEDGAUGE

LARGER HOSEIS INFLATION LINE

USE INFLATION/EXTENSION HOSEFOR SMALLPNEUMATIC PLUGS

SMALLER HOSEIS GAUGE LINE

DUAL HOSEPOLY-LIFT LINE

ATTACH ANCHOR HOOKTO EYEBOLT


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INSPECT INFLATOR ASSEMBLY OF PLUG AND EXTENSION HOSE (OR POLY-LIFT LINE) BEFORE USE AND REPLACE PROTECTIVE INFLATOR CAP AFTERUSE. Ensure tha t there is no d irt or debris lod ged in the infla tor va lve or otherconnections. Dirt or debris may prevent positive sealing of the inflator valve core.Carefully inspect inflation extension hoses to ensure that end fittings are properlycrimped, that sealing washers are in place and that the hose is not worn ordamaged. Ensure that the inflation valve core is in position and properly tightened.

S uch defects , left uncorrec ted, ma y c ause a slow lea k, resulting in under infla tiona nd plug dislodge ment. To e nsure s ecure a ttac hment to the plug, ma ke sure theP oly Lift Line is not w orn or abra ded and tha t the end fittings a re properly a ttac hed.If any da ma ge is found to any component, repa ir or replace the eq uipment beforeuse.

WARNINGDO NOT ATTEMP TTO US E AN INFLATION EXTENS IONHOS E AS A LIFTING OR CARRYING HANDLE OR AS A TETHER TO REMOVE THEP LUG FROM THE P IP ELINE! This ma y w ea ken or da ma ge the infla tion line o r theplug a nd result in a da ma ged or unsa fe plug. P oly-Lift Lines, which a re a nchored tothe plug, are designed for such use. THE DAMAGE MAY CAUSE PLUG FAILUREOR PLUG DISLODGEMENTWHICH MAY RESULTIN DEATH, SERIOUS BODILY

INJ URY AND/OR P ROP ERTY DAMAG E!

WARNINGALWAYS ATTACH AN INFLATION EXTENS ION HOS E (orP oly-Lift Line) to e nable plug infla tion a nd d efla tion from outside the Da nge r Zone!NEVER REMOVE THE INFLATION HOSE (or Poly-Lift Line) until all backpressure isrelea sed a nd the plug is completely deflate d! FAILURE TO HEED THIS WARNINGMAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY AND/OR P ROP ERTYDAMAGE!

INSPECT INFLATOR, DEFLATOR AND EXTENSION HOSE/

POLY-LIFT LINE BEFORE USING PLUG

INSPECT

INFLATORFOR DIRT

REPLACE

CAP AFTER

USAGE

INSPECT

DEFLATOR

FOR DIRT

INSPECT HOSE

AND CRIMPS

FOR DEFECTS

MAKE SURE CONNECTIONS ARE AIR-TIGHT


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10. PROPER PLUG PLACEMENT IN PIPE.POSITION THE PLUG INTO PIPE A MINIMUM DISTANCE OF ONE PIPEDIAMETER. P neumatic plugs ma y elonga te upon infla tion, forcing the plug toprotrude from pipeline and resulting in failure if not initially placed far enough into thepipe.

PLUGS USED FOR VACUUM TESTING OF MANHOLES. When plugs are used to

sea l the pipes entering a manhole for a va cuum test, the plugs must be pla ced we llinto the pipe beyond the manhole's sealing boot areas. Failure to properly positionthe plugs will prevent the sea ling b oot a rea s from b eing a deq uately tested , a nd lea ksor bad s ea ls ma y not be d isc overed. When a ma nhole is va cuum tested before be ingbackfilled, the incoming pipes and plugs must be properly braced or blocked toprevent the pipes from being pulled into the ma nhole d uring the tes t.

PLACE PLUG INTOPIPELINE A MINIMUMDISTANCE OF ONEPIPELINE DIAMETER

-D-

MIN

PIPE

DIAMETER

-D-

PLUGS MAYELONGATE

UPON

INFLATION

SEALING BOOTS

WHEN US ING P LUG S FOR VACUUM TES TING,P LACE P LUG S B EYOND S EALING B OOTS TOINS URE THE B OOT AREA IS P ROP ERLY TES TED


29/57

29

PLACING PLUG THROUGH RESTRICTED ACCESS. When plug placementreq uires insta lla tion through a res tricted acc ess, a ir may b e forced from the plug toprovide a minimum c ros s sec tion. The infla tion va lve c ore or infla tion fitting ma y b etemporarily removed to a id de fla tion. The va lve c ore or infla tion fitting must beproperly replaced a nd leak free (using pipe sea la nt or teflon ta pe), a nd the fitting sprotec tive ca p must b e repla ced. The plug b od y ma y be temporarily la shed with arope to provide the minimum possible cross section for placement. The lashed plug

is inserted into the pipe, the plug body is then untied, and the plug is properlypos itioned and then infla ted normally. Use ca ution a s the restricted a cc ess ma ycause the plug to be significantly more difficult to remove than to install. A vacuumpump may be used to extract air from larger pipeline plugs. Vacuum pump use mayrequire fabrication of special inflation extension hose assemblies. Consult with areg istered profess iona l engineer for the design and c onstruction o f such a ss emblies .BENDING FLEXIBLE PLUGS. If insta lla tion req uires a flexible plug to be bent torea ch proper position, temporary remo val of the infla tion va lve c ore or infla tion fittingwill make the b end ing process ea s ier. The va lve c ore, infla tion fitting and the fittingsprotec tive ca p must be properly repla ced a nd b e leak free (using p ipe s ea la nt orteflon ta pe).

NOTE: To prevent da ma ge to, o r colla pse of, the bypa ss hose a ss embly of a flexibleMuni-Ba ll plug, DO NOT bend the plug body in excess of 90 degrees or attemptto exceed the maximum allow a ble b end radius of the bypa ss hose.

THE INFLATOR

MAY BE REMOVED

TEMPORARILY TO

AID IN BENDING

FLEXIBLE PLUGS.

USE PIPE SEALANT

OR TEFLON TAPE

WHEN REPLACING

BENDING FLEXIBLE PLUGS


30/57

30

PLACEMENT OF PLUGS UNDER WATER. When insta lla tion req uires a plug to besubmerged , remove the infla tion fitting a nd pa rtia lly fill the plug w ith w a ter to c rea teneutral buoya ncy. P rope rly repla ce the infla tion fitting (using pipe s ea la nt or teflonta pe), c orrec tly po sition the plug in the pipe a nd then infla te the plug no rmally w ithair through an inflation extension hose.

NEVER infla te a pneumatic plug o ver or nea r a s harp ob jec t or obstruction. P unctureof the plug body and failure may result upon plug inflation and use.NEVER infla te a pneuma tic plug over la teral openings . The plug ma y rupture uponinfla tion in the non-supported bo dy a rea . Note: C herne Long Tes t-Ba lls a nd MS 2Long Tes t-Ba lls a re d es igned for use in w ye pipeline s ec tions where the p lug b odyis not completely suppo rted. Clean-Sea l plugs a re des igned for use in bloc kingtest tees that have a n unsupported a rea on ea ch branch of the tee.NEVER allow a pneumatic plug to protrude from the end of a pipeline duringinfla tion o r use. The plug ma y rupture upon infla tion o r dis lod ge w hen ba ckpress ureis applied.NEVER infla te a pneuma tic plug outs ide of a pipeline in excess of one (1) P S IG . Theplug may rupture catastrophically.

THE INFLATOR

CAN BE REMOVED

TEMPORARILY TO

FILL PLUG WITH

WATER TO PROVIDE

NEUTRAL BOUYANCY.

USE PIPE SEALANT

OR TEFLON TAPE

WHEN REPLACING

INFLATOR FITTING

PLACEMENT OF PLUGS UNDER WATER


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31

WARNINGFAILURE TO PROPERLY PLACE A PLUG BEFOREINFLATION MAY CAUSE PLUG FAILURE OR DISLODGEMENTWHICH MAYRES ULTIN DEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!

WARNINGNEVER ALLOW A PERS ON IN THE ISOLATED TES TAREASUCH AS A PIPE OR MANHOLE WHEN A PRESSURE OR A VACUUM TESTISBEING PERFORMED. ALLOWING SOMEONE IN THE TESTAREA MAY RESULTINDEATH OR S ERIOUS B ODILY INJ URY!

NEVER INFLATE

NEAR SHARP

OBJECTS

NEVER INFLATE

OVER LATERALS OR

OTHER OPENINGS

NEVER ALLOW PLUG

TO PROTRUDE

FROM PIPE

NEVER INFLATE

PLUG OUTSIDE

OF THE PIPE

ABOVE 1 PSIG

NO!NO!

NO!NO!


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32

11. PROVIDE A BACKUP SYSTEM FOR SAFETY.NEVER RELY ON PIPELINE PLUGS AS THE ONLY MEANS TO PREVENT INJURYOR PROPERTY DAMAGE. NEVER ENTER THE DANGER ZONE DURING USE.

WARNINGNEVER ATTEMP TTO US E THE EYE B OLTS , INFLATIONEXTENS ION HOS E OR C ARRYING HANDLE OF A P NEUMATIC P LUG AS A S AFETYTETHER OR AS A MEANS TO RES TRAIN THE P LUG IF ITIS DEFLATED WHILE HOLDINGB ACKP RESS URE! Sa fety b ra cing properly d esigned and constructed to w ithstand thetremend ous force s involved is req uired. Eye b olts a nd ca rrying hand les on m os t C hernepneumatic plugs are designed only for carrying, lifting and lowering pneumatic plugs. Theyare NOTdesigned to withstand the large forces encountered when plugs are deflated whenrestraining backpressure. The carrying handles, eye bolts or their attachment to thepneumatic plug may fail, thereby damaging the plug itself and may result in unsafeconditions. THIS MAY CAUSE PLUG FAILURE WHICH MAY RESULTIN DEATH, SERIOUSB ODILY INJ URY AND/OR P ROP ERTY DAMAG E!

DANGERA FULLY OPERATIONAL BACKUP SYSTEM MUSTBE USED IF THEPLUG IS USED IN ANY ENVIRONMENTWHERE PLUG LEAKAGE, FAILURE ORDISLODG EMENTFOR ANY REAS ON, C OULD RES ULTIN LIFE ENDANGERMENT,B ODILY INJ URY OR PR OP ERTY DAMAG E! The ba ckup sys tem must b e des igned to s a felystop a dislodged plug and the pipeline media that will discharge upon plug failure. Consult aregistered profess iona l engineer for proper co nstruction a nd m a intenanc e o f such a sys tem.FAILURE TO P ROVIDE A BACKUP S YS TEM MAY RES ULT IN DEATH, S ERIOUS B ODILYINJ URY AND/OR P ROP ERTY DAMAG E!

NEVER ENTER THE DANGER ZONE!

THE DANGER ZONE EXISTS IN FRONT

OF THE PLUGGED PIPE OPENING IN AN AREA

WHICH EXPANDS OUTWARDLYIN A CONE SHAPE.

NO!DANGER

ZONE

NEVER RELY ON THE USE OF PIPELINEPLUGS TO PREVENT INJURY OR PROP-ERTY DAMAGE.ALWAYS PROVIDE A BACKUP SYSTEM!

NO!DANGER

ZONE

DANGER

ZONE

DANGER

ZONE

WATER

WATER

WATER

BRACING

ADDITIONAL PLUGS MAY BE PLACED

UPSTREAM TO PREVENT LEAKAGE

PLUGS MAYBE BRACED TO

PREVENTDISLODGEMENT

BRACINGCONSULT A REGISTERED ENGINEER

ON BRACING CONSTRUCTION


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33

12. PROPER PNEUMATIC PLUG INFLATION.PLACEMENT OF PLUGS BEFORE INFLATION. In mos t applica tions, p lugs ca nsimply be placed into proper position (refer to Section 10 of this manual) and theninfla ted to rec ommended pres sure. The infla tion is performed from outs ide theDa nge r Zone using a n infla tion extens ion hose (or P oly-Lift Line) a nd a properpressure s ource .

NOTE: Other applications may require a plug to be held in position until the plugbo dy fully co ntac ts the pipe (eg . a ttac hment of fittings which c a use the p lug to tipduring inflation). From a location outside the immediate Danger Zone the user mayemploy a device , such a s a pole with a ttac hed hook, to pos ition the plug. The plugis inflated using an inflation extension hose (or Poly-Lift Line) until it expands toma ke pipe wa ll co ntac t. After initia l pipe c onta ct the user moves to a new pos itionwell outside the Danger Zone and continues inflation until the recommendedpressure is reached .USE PROPERLY CALIBRATED PRESSURE GAUGES to monitor inflation pressurea nd backpressure. Use of non-ca librated ga uges ma y result in a c ondition of over-infla tion or und er-infla tion (refer to follow ing warnings).

NOTE: Rough handling, contamination or a sharp impact can quickly cause anypressure g auge to fall out of ca libration. Other pressure g auges (eg . so meinexpensive tire type gauges) are extremely inaccurate and should not be used. Theuser must se lec t a nd ma intain properly ca librated pressure g auges for use w ithpneumatic plugs .INFLATE PLUG TO RECOMMENDED PRESSURE. Do not exc eed this press ure.Proper inflation pressure is clearly marked on each product, outlined in this bookleta nd included in Cherne product c a ta log s a nd product s pec ifica tion s heets (refer tofollow ing wa rnings ).INFLATE PLUGS USING A PROPER PRESSURE SOURCE. A Cherne Tes t P umpeq uipped with a pressure g a uge, a Cherne P ortab le Air Ta nk eq uipped with a n

output pressure regula tor and pressure g a uge, or a Cherne Remote Infla tion C ontrolP anel w ith reg ula ted pressure output is reco mmended .NOTE: If an alternate inflation source is proposed, refer to the following warningsbefore proceeding.REMOTE INFLATION CONTROL PANEL. This portable panel is designed to takeair from an unregulated supply (up to 250 PSIG) and provides a preset, regulatedpressure output allowing safe plug inflation. The large (4 dial) inflation pressurega uge a cc ura tely monitors pressure d uring plug use. The pa nel ma y a lso be used toprovide a continuous, regulated pressure supply to a plug thereby eliminating theneed to c heck and a djust infla tion pres sure a t four hour intervals. Input/outputconnections are included for use with either single or dual port pneumatic plugs.


34/5734

CHECK THE INFLATION PRESSURE AT LEAST EVERY FOUR (4) HOURS. Asma ll volume o f infla tion a ir over time ma y/will lea k throug h the elas tomeric (rubber)body of every pneumatic plug. This lost air must be replaced or under-inflation mayresult allowing the plug and any media restrained to dislodge from the pipe. Areg ula ted pressure s ource ma y be permanently a ttac hed to the plugs infla tion inletport as an alternative to periodically checking and adjusting the inflation pressure.Co nsult w ith a reg istered professional engineer for the co nstruction and

ma intenanc e of such a pressure reg ula ted infla tion source or use a Cherne RemoteInflation Control Panel described previously. If you are constructing your own remoteinfla tion c ontrol so urce refer to follow ing warnings .INFLATION PRESSURE VERSUS TEMPERATURE. Any temperature increase ordec rea se will ca use a co rresponding c hang e in infla tion pressure. Monitor and adjustplug inflation pressure as necessary to compensate for temperature changes.NOTE: Temperatures in pipelines ma y va ry widely from outs ide a mbienttemperatures . Monitor infla tion press ure c los ely a nd a djust a s necess a ry to ma intainrecommended pressure.INFLATION OF PLUGS WITH MEDIA OTHER THAN AIR. Many C herne pneuma ticplugs ma y a lso be infla ted w ith wa ter or w ith inert ga ss es such as nitrog en (as long

a s a ll pressure s ources a re regula ted). C onsult w ith a reg istered profess iona lengineer or call Cherne toll free at 1-800-843-7584 for recommendations (refer tofollow ing wa rnings ).

WARNINGANY PNEUMATIC PLUG INFLATION SOURCE MUSTBEEQUIPPED WITH A PRESSURE REGULATED OUTPUTMONITORED BY AP ROP ERLY CALIB RATED PRESS URE GAUG E! Lack of suc h components ma yresult in a condition of over-inflation or under-inflation. Consult with a registeredprofessional engineer for the proper specification and design of such an inflationsource. NEVER attempt to inflate a pneumatic plug using a non-regulated high

pressure so urce (eg . Nitrog en ta nk, S cuba tank, non-regula ted a ir compresso r, e tc).Catastrophic plug failure may result! USE OF AN IMPROPER INFLATION SOURCEMAY CAUSE PLUG FAILURE OR DISLODGEMENTWHICH MAY RESULTINDEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!


35/57

35

WARNINGUS E EXTREME CAUTION IF A RELIEF VALVE IS INCLUDEDAS A COMPONENTOF A PNEUMATIC PLUG OR OF AN INFLATION SOURCE!Never rely on a relief valve to ensure that proper inflation pressure has been reacheda nd no t exc eed ed. Many relief va lves do not resea l consistently a fter rea ching initia lcracking pressure and may result in the plug slowly deflating during use, causingunder-infla tion of the plug. Although relief pressure ma y not b e rea ched upon initia linflation, the application of backpressure normally increases the inflation pressure.This pressure increase may cause the relief valve to crack during plug use allowingthe plug to slow ly defla te. Also , a relief va lve ma y not releas e s uffic ient volume o f a irto prevent over-infla tion a nd plug rupture. When a relief va lve is s ubjec ted to externa lpressure (backpressure), the relief pressure setting (cracking pressure) will increasewhich may result in over-inflation. Rough handling, age or contamination may causethe relief va lve to fail or fa ll out o f ca libra tion resulting in a false sense o f se curity.Only a properly functioning pressure g a uge should be used to d etermine w hen theproper infla tion press ure ha s bee n rea ched a nd no t exc eed ed. AN IMPROP ERLYFUNC TIONING RELIEF VALVE MAY CAUS E P LUG FAILURE OR DISLODG EMENTWHICH MAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY AND/OR P ROP ERTY

DAMAGE!

WARNINGDO NOTOVER-INFLATE OR UNDER-INFLATE APNEUMATIC PLUG! OVER-INFLATION of a pneumatic plug (exceeding therec ommend ed infla tion pressure) ma y ca use the plug to rupture a nd d islodge a textreme veloc ity! UNDER-INFLATION of a pneuma tic plug (infla tion to pressure les sthan that recommended) may cause the plug and the media restrained to dislodgefrom the pipe! A plug tha t is over-infla ted or under-infla ted often d oes not failimmediately. However such failure may occur at any time without warning!IMP ROP ER INFLATION MAY CAUS E P LUG FAILURE OR DISLODG EMENTWHICHMAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY AND/OR P ROP ERTY

DAMAGE!


36/57

36

13. PROPER PNEUMATIC PLUG REMOVAL.A. RELEASE ALL RESTRAINED MEDIA (ba ckpress ure) from a pneuma tic plugbefore deflatiing the plug.PLUGS PROPERLY BLOCKED OR SUPPORTED BY BRACING MAY BEDEFLATED TO RELEASE THE MEDIA RESTRAINED BY THE PLUG(BACKPRESSURE). G ra dua l plug defla tion ca n control the ra te of med ia disc harge.

Use extreme c aution to ens ure tha t such brac ing is properly des igned to w ithsta ndthe full force of the plug a nd a ny res tra ined media. Ensure tha t a ny med ia relea seddoes not result in injury or property damage.SOME CHERNE PRODUCTS ARE DESIGNED TO SAFELY RELEASEBACKPRESSURE WITHOUT THE USE OF BRACING. This includes MS2 LongTes t-B a ll plugs and C lea n-S ea l plugs which a re s imply de fla ted to relea seba ckpressure. Other plugs such a s mos t s izes of pillow type Muni-B a ll a nd Tes t-B a ll plugs have tether atta chment points o f sufficient strength to a llow a ttac hmentof a n anchor ca ble that c an withsta nd full ra ted ba ckpressure. C a ll Cherne toll free a t1-800-843-7584 for specific recommendations.AN EXTENSION HOSE AND SHUT OFF VALVE MAY BE ATTACHED TO THE

BY-PASS OF A MUNI-BALL PLUG. The valve is opened from outside the DangerZone to relea se ba ckpressure. The ba ckpressure ma y be relea sed b y g ravity flow orthe hose ma y be a ttached to the inlet of a wa ter pump.THE SUCTION HOSE OF A PUMP MAY BE INSERTED BEHIND A PLUG. Somea pplica tions a llow direc t a cc ess to the restrained me dia. B a ckpressure is relieved bya ctiva ting the pump to remove the media.THE BY-PASS OF A MUNI-BALL PLUG MAY BE TEMPORARILY BLOCKEDUSING A SMALL PNEUMATIC PLUG. The small plug, connected to an inflationextension hos e, is d efla ted from o utside the Da nger Zone to a llow relea se ofba ckpressure, a ir or wa ter, through the Muni-B a ll bypa ss . NOTE: Damage to thesmall plug and extension hose may occur as the plug is ejected from the bypass

a rea . Inspec t the plug a nd hos e c a refully be fore a ttempting further use .

PLUGS PROPERLY

BRACED MAY BE

DEFLATED TO

RELEASE

BACKPRESSURE

WATER WATER

WATER MAY BE PUMPEDFROM BEHIND PLUG TO

RELEASE BACKPRESSURE

BRACINGCONSULT A REGISTERED ENGINEER

ON BRACING CONSTRUCTION

DANGER

ZONE

DANGER

ZONE


37/57

37

B. RELEASE THE AIR IN THE PNEUMATIC PLUG from o utside the Da nger Zonethroug h the infla tion extens ion hos e until the plug is complete ly d efla ted . Full plugdeflation minimizes possibility of plug damage during the removal process.NOTE: A vacuum pump may be used to speed the deflation of larger plugs. Thesuction hose of a water pump may be needed to aid deflation of any plug inflated

with water. These deflation aids may require fabrication of special inflation extensionhose a ss emblies . Consult w ith a reg istered profess iona l engineer for the des ign a ndconstruction of such assemblies.C. REMOVE THE PLUG FROM THE PIPE. Fully d efla te sma ll plugs a nd s imply pullon the a ttac hed c hain and ring a ss embly to remove the plug. Fully de fla te la rgerplugs and pull on the attached Poly-Lift Line or other tether device to remove theplug. If unexpected resistance is encountered, stop pulling and carefully inspect theplug installa tion. P revent da ma ge to the plug a nd/or acc esso ries by eliminating a nyobstructions before proceeding.

WARNINGDO NOT ATTEMP TTO US E AN INFLATION EXTENS IONHOS E AS A LIFTING OR CARRYING HANDLE OR AS A TETHER TO REMOVE THEPLUG FROM THE PIPELINE! This may weaken or damage the inflation line or theplug itself a nd res ult in a da ma ge d or unsa fe plug. THE DAMAG ED P LUG MAYLATER FAIL WHICH MAY RES ULTIN DEATH, S ERIOUS BODILY INJ URY AND/ORPROPERTY DAMAGE!

WARNING DEFLATING A P NEUMATIC P LUG BEFORE ALLBACKPRESSURE IS RELEASED MAY CAUSE THE PLUG AND THE MEDIARES TRAINED TO EJ ECTFROM THE P IPE ATHIGH VELOCITY! THIS MAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY AND/OR P ROP ERTY DAMAG E ANDDAMAGE TO THE PLUG AND ACCESSORIES!

DANGER

ZONE

DANGER

ZONE

WATER

WATER

A SMALL PLUG CANBLOCK A MUNI-BALLPLUG BY-PASS

DEFLATE THE SMALLPLUG TO RELIEVEBACKPRESSURE

THE BY-PASS ON A

MUNI-BALL PLUG MAYBE USED TO RELIEVE

BACKPRESSURE BY

GRAVITY OR PUMPING


38/57

38

14. CLEAN AND INSPECT PLUG AFTER EVERY USEAND STORE PROPERLY.

A. CLEAN AND INSPECT PLUG as outlined in Section 5 of this manual.B. STORE THE PLUG IN A CLEAN DRY PLACE, a way from s unlight o r otherso urces o f ultra-violet light a nd a wa y from s ources o f ozone, s uch a s e lec trica l

equipment. Ozone and ultra-violet light may cause the elastomer (rubber) to weakenand fail prematurely.C. STORE PLUGS BELOW 110 DEGREES F (43 degrees C). Exposure to excessivetempera tures may c a use da mag e to the elas tomer of pneumatic plugs.NOTE: Storage of plugs in non-ventilated structures (such as metal buildings) mayexpose the plugs to exces sive temperatures which ma y da mag e the plugs a ndpossibly result in a plug failure.D. ARMOR ALL MAY BE USED AS A PRESERVATIVE on e la stomeric (rubb er)surfa ces for extended stora ge . Apply only a light c oa ting to the plug. Other wa ter orsilicone based preservatives may also be used (see warning below). (ARMOR ALLis a Reg istered Trad ema rk of Armor All Prod ucts Corp. Allso Vlejo, CA. US A 92656)

E. PLUGS MAY BE STORED SUSPENDED VERTICALLY OR PLACEDHORIZONTALLY.When storing a plug, it is recommended that the plug be partiallyinfla ted to 1 PS IG only (se e infla tion w arning b elow), which will prevent a perma nentcrease from forming in the plug body. A crease may cause a weakened arearesulting in premature failure upon plug inflation or use.

WARNINGDO NOTINFLATE PLUG IN EXCESS OF ONE (1) PSIGWHEN PLUG IS NOTIN A PIPE! Plugs are designed only to be fully inflated whenproperly pos itione d ins ide a pipe. THE P LUG MAY RUP TURE RES ULTING INDEATH, S ERIOUS BODILY INJ URY AND/OR P ROP ERTY DAMAG E!

WARNINGEXCES S IVE C OATING OF P RES ERVATIVE ON ELAS TOMERMAY RESULTIN A SLIPPERY PLUG SURFACE AND REDUCE THEB ACKPRES S URE HOLDING CAPABILITIES! DO NOTCOATA P LUG IMMEDIATELYBEFORE USE AS THE COATING MAY REDUCE THE BACKPRESSURE HOLDINGCAPABILITIES OF THE PLUG. If plug use is required and the plug has an excessiveco a ting o f preserva tive, the plug s hould b e w ashed with so lution of w a ter and milddeterge nt, flushed with clea n wa ter and then a llow ed to a ir dry before use . US E OFS OME PRODUCTS S UCH AS P ETROLEUM OR S OLVENTBAS ED COMPOUNDSMAY CAUSE SEVERE DAMAGE TO THE PLUG! The damage may be below theplug surface and not be obvious during inspection but failure may result upon pluginflat ion or use. P LUG FAILURE MAY RES ULTIN DEATH, S ERIOUS B ODILY INJ URY

AND/OR PROPERTY DAMAGE!


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39

15. SPECIAL CAUTION TO EMPLOYERSAND CONTRACTORS.

A. ENSURE THIS MANUAL IS KEPT FOR REFERENCE BY CURRENT/FUTUREPLUG USERS. Employer must ensure that this manual is kept for reference by theuser of Cherne prod ucts. For example, this b ooklet should b e pla ced in the too l bo xof the plumber or user. This manual may be freely copied and distributed ora dd itiona l co pies may b e o bta ined free upon req uest from Cherne b y c a lling toll freeat 1-800-843-7584.B. INSTRUCT EMPLOYEES WITH THIS MANUAL ON THE PROPER USE OFPLUGS AND ALL RELATED EQUIPMENT. The employer or contracto r ha s a dutyto provide a ll necess a ry training on eq uipment usa ge . In addition, the employer orco ntra ctor must provide a ll nec essa ry s a fety eq uipment a nd tra ining, familia rizeusers w ith this ma nual a nd the purcha sed e q uipment, a nd provide co pies of thisSAFETY INSTRUCTION MANUAL for use on the job.C. INSTRUCT EMPLOYEES AND WORKERS IN PROPER SAFETYPROCEDURES. The employer or contractor has a duty to properly instruct andensure c omplia nce with sa fety proc edures and a ll a pplica ble OSHA, Federal, Sta tea nd Loca l rules .D. INSTRUCT ALL EMPLOYEES AND WORKERS AS TO POSSIBLE HAZARDS.The employer or contractor has a duty to instruct as to possible hazards that may beencountered on the job, including the magnitude of the risk. The employer orco ntra ctor must inform employees of the proper methods for sa fe use o f all theequipment including Cherne products and working in the job environment.E. INSTRUCT ALL EMPLOYEES AND WORKERS REGARDING THE DANGERSOF ANY REASONABLY FORESEEABLE MISUSE OF THE PRODUCT. Theemployer or contra ctor has a duty to provide such informa tion a s se t forth in thismanual as well as anything else the employer or contractor is aware of. Suchinstruction is the c ontra ctor's or employer's d uty. S hould the employer or contrac torbe aware of such misuse, Cherne should be so informed.F. INFORM ALL WORKERS OF THE COMPANY REPRESENTATIVE WHO ISRESPONSIBLE FOR SAFETY ON THE J OB.The employer or contractor mustinform all workers who is responsible for safety on the job and for consultationreg a rding q uestions rela ting to Cherne product use a nd other sa fety cons idera tions.


40/57

40

16.PRODUCTUSAGEDATA

SINGLE-SIZE

RUBBERTEST-BALLPLUGS

SIZEUSAGERANGE

PROPER

MAXIMUMALL

OWABLE

NO

MINAL

MINIMUM

MAXIMUM

INF

LATION

BACKPRES

SURE

SIZE

DIAMETER

DIAMETER

PRESSURE

AIR

W

ATER

PartNo.

Inch

es(MM)

Inches(MM

)

Inches(MM)

PS

IG(bar)

PSIG(bar)Feet

(METERS)

041-386

8

"(200)

7.0

0"(178

)

8.2

5"(210)

2

5

(1.7

)

17

(1.2

)

4

0

(12M)

041-394

10

"(250)

9.0

0"(229

)

10.2

5"(260)

2

5

(1.7

)

17

(1.2

)

4

0

(12M)

041-408

12

"(300)

10.5

0"(267

)

12.2

5"(311)

2

5

(1.7

)

17

(1.2

)

4

0

(12M)

WARN

ING:Plugsmustbebrace

dwhileinuse.


41/57

41

SINGLE-SIZEU

RETHANETEST-BALLPLUGS

SIZEUSAGERANGE

PROPER

MAXIMUMALL

OWABLE

NOM

INAL

MINIMUM

MAXIMUM

INF

LATION

BACKPRES

SURE

SIZE

DIAMETER

DIAMETER

PRESSURE

AIR

W

ATER

PartNo.

Inch

es(MM)

Inches(MM)

Inches(MM)

PSIG(bar)

PSIG(bar)Feet

(METERS)

277-108

15"(375)

14.70"(373

)

15.50"(394)

2

4(1.8

)

15(1.0

)

3

5(11M)

277-118

18"(450)

17.74"(451

)

18.80"(477)

2

4(1.8

)

15(1.0

)

3

5(11M)

277-134

21"(525)

20.58"(523

)

21.80"(554)

1

8(1.2

)

13(.90)

30(9.1M)

277-142

24"(600)

23.52"(598

)

25.25"(641)

1

8(1.2

)

10(.69)

25(7.6M)

277-150

27"(700)

26.46"(672

)

28.25"(717)

1

8(1.2

)

10(.69)

25(7.6M)

277-169

30"(750)

29.40"(747

)

31.25"(794)

1

8(1.2

)

10(.69)

25(7.6M)

277-177

33"(850)

32.34"(819

)

34.25"(870)

1

3(.90)

9(0.62)

20(6.1M)

277-185

36"(900)

35.28"(896

)

37.50"(952)

1

3(.90)

9(0.62)

20(6.1M)

277-193

42"

(1100)

41.16"(1045

)

43.75"(1111)

1

2(.83)

8(0.55)

18(5.5M)

277-207

48"

(1200)

47.04"(1195

)

50.00"(1270)

1

2(.83)

5(0.34)

13(4.0M)

277-215

54"

(1400)

52.92"(1344

)

56.00"(1422)

1

0(.69)

5(0.34)

13(4.0M)

277-223

60"

(1500)

58.80"(1493

)

62.00"(1575)

1

0(.69)

5(0.34)

13(4.0M)

277-231

66"

(1700)

64.68"(1643

)

68.00"(1727)

8(.55)

3.5

(0.24)

8

(2.4M)

WARN


dwhileinuse.


42/57

42

MULTI-SIZE

RUBBERTEST-BAL

LPLUGS

SIZEUSAGERANGE

PROPER

MAXIMUMALL

OWABLE

NO

MINAL

MINIMUM

MAXIMUM

INF

LATION

BACKPRES

SURE

SIZE

DIAMETER

DIAMETER

PRESSURE

AIR

W

ATER

PartNo.

Inch

es(MM)

Inches(MM)

Inches(MM)

PSIG(bar)

PSIG(bar)Feet

(METERS)

275-069

6"-8"

(150-200)

4.7

5"(121

)

8.2

5"(210)

3

5

(2.4

)

17

(1.2

)

40

(12M)

275-085

8"-12"(200-300)

7.0

0"(178

)

12.2

5"(311)

2

5

(1.7

)

17

(1.2

)

40

(12M)

275-128

12"-18

"(300-450)

10.7

5"(273)

18.2

5"(464)

2

5

(1.7

)

17

(1.2

)

40

(12M)

272-299

15"-30

"(375-750)

14.5

0"(368

)

30.5

0"(775)

.

.......see

data

below....

....

at1

5"(375)

14.5

0"(368

)

15.2

5"(387)

2

5

(1.7

)

17

(1.2

)

40

(12M)

at1

8"(450)

15.2

6"(388

)

18.2

5"(463)

2

5

(1.7

)

13

(.9

0)

30

(9.1

M)

at2

1"(525)

18.2

6"(464)

21.2

5"(540)

2

5

(1.7

)

13(.90)

30(9.1

M)

at2

4"(600)

21.2

6"(541)

24.2

5"(616)

2

5

(1.7

)

11(.76)

25(7.6

M)

at3

0"(750)

24.2

6"(617)

30.5

0"(775)

2

5

(1.7

)

11(.76)

25(7.6

M)

272-310

24"-42"(600-1050)

........................see

da

ta

below.................

.....

at2

4"(600)

22.5

0"(570

)

24.2

5"(616)

2

5

(1.7

)

15

(1.0

)

35

(11M)

at3

0"(750)

24.2

6"(617)

30.2

5"(768)

2

5

(1.7

)

13(.90)

30(9.0

M)

at3

6"(900)

30.2

6"(769)

36.2

5"(921)

2

5

(1.7

)

11(.76)

25(7.6

M)

at42"(1050)

36.2

6"(922)

42.5

0"(1080)

2

5

(1.7

)

9(.62)

20(6.1

M)

272-337

40"-60"

(1000-1525)

........................see

da

ta

below.................

......

at40"-42

(1000-1100)

38.0

0"(965

)

42.2

5"(1073)

2

5

(1.7

)

15

(1.0

)

35

(11M)

at48(1225)

42.2

6(107

4)

48.2

5(1226)

2

5

(1.7

)

13

(.90)

30

(9.1

M)

at54(1375)

48.2

6(122

7)

54.2

5(1378)

2

5

(1.7

)

11

(.76)

25

(7.6

M)

at60(1525)

54.2

6(137

9)

60.5

0(1536)

2

5

(1.7

)

9

(.6

2)

20

(6.1

M)

WARN


dwhileinuse.


43/57

43

SINGLE-SIZE

RUBBERMUNI-BALLPLUGS

SIZEUSAGERANGE

PROPER

MAXIMUMALL

OWABLE

NOM

INAL

MINIMUM

MAXIMUM

INF

LATION

BACKPRES

SURE

SIZE

DIAMETER

DIAMETER

PRESSURE

AIR

W

ATER

PartNo.

Inch

es(MM)

Inches(MM)

Inches(MM)

PSIG(bar)

PSIG(bar)Feet

(METERS)

262-008

1.5

"(40)

1.4

9"(38)

1.8

8"(48)

4

0

(2.8

)

22

(1.5

)

50

(15M)

262-010

2"

(50)

1.8

8"(48)

2.2

5"(57)

4

0

(2.8

)

22

(1.5

)

50

(15M)

262-021

3"

(75)

2.6

2"(67)

3.2

5"(83)

4

0

(2.8

)

22

(1.5

)

50

(15M)

262-048

4"

(100)

3.2

5"(83)

4.2

5"(108)

4

0

(2.8

)

22

(1.5

)

50

(15M)

262-064

6"

(150)

4.5

0"(114)

6.2

5"(159)

3

5

(2.4

)

13

(.90)

30

(9.1

M)

262-080

8"

(200)

7.0

0"(178)

8.2

5"(210)

3

5

(2.4

)

13

(.90)

30

(9.1

M)

262-110

10"

(250)

9.0

0"(229)

10.2

5"(260)

3

5

(2.4

)

13

(.90)

30

(9.1

M)

262-129

12"(100)

10.5

0"(267

)

12.2

5"(311)

3

5

(2.4

)

13

(.90)

30

(9.1

M)

262-137

15"-16"(375-400)

14.0

0"(356

)

16.2

5"(413)

3

5

(2.4

)

13

(.90)

30

(9.1

M)

262-188

18"

(450)

17.5

0"(445

)

19.8

5"(504)

2

5

(1.7

)

13

(.90)

30

(9.1

M)

262-218

21"

(500)

18.8

5"(479

)

21.3

8"(543)

2

5

(1.7

)

13

(.90)

30

(9.1

M)

262-242

24"

(600)

21.9

5"(558

)

24.9

0"(632)

2

5

(1.7

)

13

(.90)

30

(9.1

M)

WARN


dwhileinuse.


44/57

44

MULTI-SIZERUBBERMUNI-B

ALLPLUGS

SIZE

USAGERANGE

PROPER

MAXIMUMA

LLOWABLE

NOMINAL

MINIMU

M

MAXIMUM

INFLATION

BACKPR

ESSURE

SIZE

DIAMET

ER

DIAMETER

PRESSURE

AIR

WATER

PartNo.

In

ches(MM)

Inches(M

M)

Inches(MM)

PSIG(bar)

PSIG(bar)Fe

et(METERS)

265-048

4"-6"(100-150)

3.7

5"(95)

6.2

5"(159)

35

(2.4

)

17

(1.2

)

40

(12M)

265-068

6"-8"(150-200)

5.2

5"(133)

8.3

3"(211)

35

(2.4

)

17

(1.2

)

40

(12M)

265-071

8"-10"(200-250)

7.0

0"(178)

10.2

5"(260)

25

(1.7

)

17

(1.2

)

40

(12M)

265-098

8"-12"(200-300)

7.0

0"(178)

12.2

5"(311)

25

(1.7

)

17

(1.2

)

40

(12M)

265-128

12"-18"(300-450)

10.7

5"(2

73)

18.8

0"(477)

25

(1.7

)

13

(.9

0)

30

(9.1

M)

262-552

15"-30"(375-750)........................see

data

below...................

...

at15"(375)

14.5

0"(368)

15.2

5"(387)

25

(1.7

)

17

(1.2

)

40

(12M)

at18"(450)

15.2

6"(388)

18.2

5"(463)

25

(1.7

)

13

(.9

0)

30

(9.1

M)

at21"(525)

18.2

6"(4

64)

21.2

5"(540)

25

(1.7

)

13(.90)

30(9.1

M)

at24"(600)

21.2

6"(5

41)

24.2

5"(616)

25

(1.7

)

11(.76)

25(7.6

M)

at30"(750)

24.2

6"(6

17)

30.5

0"(775)

25

(1.7

)

11(.76)

25(7.6

M)

262-560

24"-42"(600-1050)..........

..............see

data

below...................

...

at24"(600)

22.5

0"(570)

24.2

5"(616)

25

(1.7

)

15

(1.0

)

35

(11M)

at30"(750)

24.2

6"(6

17)

30.2

5"(768)

25

(1.7

)

13(.90)

30(9.1

M)

at36"(900)

30.2

6"(7

69)

36.2

5"(921)

25

(1.7

)

11(.76)

25(7.6

M)

a

t42"(1050)

36.2

6"(9

22)

42.5

0"(1080)

25

(1.7

)

9(.62)

20(6.1

M)

262-587

40"

-60"(1000-1525).........

..............see

data

below...................

...

at40"-42"(1000-1100)

38.0

0"(965)

42.2

5"(1073)

25

(1.7

)

15

(1.0

)

35

(11M)

a

t48"(1225)

42.2

6"(1074)

48.2

5"(1226)

25

(1.7

)

13

(.9

0)

30

(9.1

M)

a

t54"(1375)

48.2

6"(1227)

54.2

5"(1378)

25

(1.7

)

11

(.6

9)

25

(7.6

M)

a

t60"(1525)

54.2

6"(1379)

60.5

0"(1536)

25

(1.7

)

9

(.62)

20

(6.1

M)

WARNING:Plugsmustbebracedwhileinuse.


45/57

45

SINGLE-SIZEU

RETHANEMUNI-BALLPLUGS

SIZEUSAGERANGE

PROPER

MAXIMUMALL

OWABLE

NOM

INAL

MINIMUM

MAXIMUM

INF

LATION

BACKPRES

SURE

SIZE

DIAMETER

DIAMETER

PRESSURE

AIR

W

ATER

PartNo.

Inch

es(mm)

Inches(mm)

Inches(mm)

PSIG(bar)

PSIG(bar)Feet

(METERS)

266-027

30"

(750)

29.4

0"(747

)

31.2

5"(794)

1

8

(1.2

)

11

(.76)

25

(7.6

M)

266-035

33"

(850)

32.3

4"(819

)

34.2

5"(870)

1

3

(.9

0)

8.7

(.62)

20

(6.1

M)

266-043

36"

(900)

35.2

8"(896

)

37.5

0"(952)

1

3

(.9

0)

8.7

(.62)

20

(6.1

M)

266-051

42"

(1100)

41.1

6"(1045)

43.7

5"(1111)

1

2

(.8

3)

7.8

(.55)

18

(5.5

M)

266-078

48"

(1200)

47.0

4"(1195)

50.0

0"(1270)

1

2

(.8

3)

5.6

(.34)

13

(4.0

M)

266-086

54"

(1400)

52.9

2"(1344)

56.0

0"(1422)

1

0

(.6

9)

5.6

(.34)

13

(4.0

M)

266-094

60"

(1500)

58.8

0"(1493)

62.0

0"(1575)

1

0

(.6

9)

5.6

(.34)

13

(4.0

M)

266-108

66"

(1700)

64.6

8"(1643)

68.0

0"(1727)

8

(.55)

3.5

(.24)

8

(2.4

M)

WARN


dwhileinuse.


46/57

46

REMORE

MOTEPLACEMENTPLUGS

SIZEUSAGERANGE

PROPER

MAXIMUMALL

OWABLE

NOM

INAL

MINIMUM

MAXIMUM

INF

LATION

BACKPRES

SURE

S

IZE

DIAMETER

DIAMETER

PRESSURE

AIR

W

ATER

PartNo.

Inch

es(MM)

Inches(MM

)

Inches(MM)

PS

IG(bar)

PSIG(bar)Feet

(METERS)

cherne pipe plug safety manual

Documents