PLIDCO®THE PIPE LINE DEVELOPMENT COMPANY870 CANTERBURY ROADWESTLAKE, OH 44145 USAShear + PlugStop Flow Without Stopping Pr...
Main Menu Click the link below to watch the video. Shear Plug Video Continue Presentation
PLIDCO® Shear + Plug Cutting edge technology that provides a safe andreliable method to isolate piping systems formainten...
Primary Industries Served Oil & Gas Petroleum Refineries Chemical & Petrochemical Fossil & Nuclear Power Generation P...
Shear + Plug is the Best Choice for: Isolating High Pressure / High Temperature /High Flow Rate piping systems Systems c...
Shear + Plug is the Best Choice for: Line conditions such that standard pluggingor freezing techniques are inadequate Li...
Shear + Plug Features and Benefits: A unique, intrinsically safe design thatseals independent of the pipe A positive met...
Shear + Plug Features and Benefits 2” & smaller units designed for ASME Class 900pressure / temperature ratings up to 800...
Shear + Plug Features and Benefits Provides safe, positive isolation of piping systemscarrying: Steam, boiler feed water...
Shear + Plug Features and Benefits: Designed and manufactured to applicable codesand ISO accredited quality standards D....
Installation Procedure Work area is inspected for clearancesand obstructions Pipe is ultrasonically tested to verifywall...
Installation Procedure Pipe reinforcing rings are positioned on the pipe,straddling the location to be plugged, and welde...
Installation Procedure The pipe holding assembly is placed into positionover the reinforcing rings; the internal seal fac...
Installation Procedure The chain notching apparatus is assembled intothe pipe holding assembly and the pipeis notched No...
Installation Procedure The pipe is notched to a depth equal to 1/3of its minimum U.T. thickness reading Longitudinal str...
inchttn 119.0179.03232NOTCHED PIPE CALCULATIONPIPE SIZE: 1 inch nominal, 1.315 inches outside diameter, ASTM A106 Grade BW...
Installation Procedure The thrust screw and seal nut assembliesare installed
Installation Procedure Sealant injection fittings are installedand pre-charged
Installation Procedure Assembly of the PLIDCO® Shear + Plug iscompleted by positioning the retraction housingand coupon r...
Installation Procedure The through-bolts are hydraulically tensioned andthe complete assembly is pressure tested toverify...
Installation Procedure The hydraulic cylinder is actuated,thrusting the shear blade through the pipe andpushing the coupo...
Installation Procedure The blind plate is indexed into position Thrust screws on the downstream sideare tightened, which...
Installation Procedure Sealant pressure is injected onto theseal face thereby verifying the seal With flow halted, the d...
Installation Procedure The coupon receptacle housing is loweredto remove the shear blade, guidance tracks, andthe sheared...
Installation Procedure The first completion cap is welded to the bottomof the pipe holding assembly
Installation Procedure When the downstream work is completed,the thrust screws are backed off andprocess flow is re-estab...
Installation Procedure The retraction cock valve is rotated 90° andsealant is injected into the retraction cockannulus
Installation Procedure Residual pressure and content is blown downfrom the retraction housing and the unit isdisassembled
Installation Procedure The second completion cap is welded in placeon the top of the pipe holding assembly
Installation Procedure The completed pipe holding assembly remainsas a permanent part of the line
Case Histories
Case History #1Petroleum RefineryAlberta, Canada Inoperable valve in a 4” line carrying highoctane gasoline operating at ...
Case History #2Large, Midwestern U.S. Steel Mill A 6” 1400 psi boiler feed water line was inneed of pump repair Line use...
Case History #2 (cont’d)Large, Midwestern U.S. Steel Mill PLIDCO® Shear+Plug isolated the pump andthe bad valve; the pump...
Case History #3Polyethylene Plant - France A 2200 psi boiler feed line operating at 300°F. with considerable problems Th...
Case History #4Petrochemical Plant - Texas Previous attempts to plug a superheatedsteam line using a product from a diffe...
Case History #5Petroleum Refinery – Midwest, U.S. A16” H2S line with a broken wafer valve onthe the actuator shaft Avoid...
Shear + Plug
PLIDCO®Shear + Plug DivisionWorking together to make hazardous piping saferwww.plidco.com
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Shear + Plug

  1. 1. PLIDCO®THE PIPE LINE DEVELOPMENT COMPANY870 CANTERBURY ROADWESTLAKE, OH 44145 USAShear + PlugStop Flow Without Stopping Productionwww.plidco.com
  2. 2. Main Menu Click the link below to watch the video. Shear Plug Video Continue Presentation
  3. 3. PLIDCO® Shear + Plug Cutting edge technology that provides a safe andreliable method to isolate piping systems formaintenance, repairs or upgrades whilemaintaining continuous operation
  4. 4. Primary Industries Served Oil & Gas Petroleum Refineries Chemical & Petrochemical Fossil & Nuclear Power Generation Primary Metals Integrated Pulp & Paper Food & Industrial Process Plants
  5. 5. Shear + Plug is the Best Choice for: Isolating High Pressure / High Temperature /High Flow Rate piping systems Systems containing questionable or inoperablevalves Header systems lacking isolation abilities withoutcomplete shutdown
  6. 6. Shear + Plug is the Best Choice for: Line conditions such that standard pluggingor freezing techniques are inadequate Lines with irregular inside diameters resultingfrom corrosion or internal deposits Lines that need to remain plugged for anextended period of time
  7. 7. Shear + Plug Features and Benefits: A unique, intrinsically safe design thatseals independent of the pipe A positive metal to metal seal with a secondarysealant backup Resistant to flow rate; providing absolutely zeroleak-by isolation
  8. 8. Shear + Plug Features and Benefits 2” & smaller units designed for ASME Class 900pressure / temperature ratings up to 800º F. 2.5” – 10” units designed for ASME Class 600pressure / temperature ratings up to 800º F. Larger sizes, higher pressure / temperatureconfigurations available on application
  9. 9. Shear + Plug Features and Benefits Provides safe, positive isolation of piping systemscarrying: Steam, boiler feed water, catalyst, slurryfuel gas, sulfur, highly viscous fluids Other line content on application
  10. 10. Shear + Plug Features and Benefits: Designed and manufactured to applicable codesand ISO accredited quality standards D.O.T. qualified (subject matter experts), factorytrained technicians with years of global fieldexperience A world wide customer list upon request
  11. 11. Installation Procedure Work area is inspected for clearancesand obstructions Pipe is ultrasonically tested to verifywall thickness
  12. 12. Installation Procedure Pipe reinforcing rings are positioned on the pipe,straddling the location to be plugged, and weldedin place
  13. 13. Installation Procedure The pipe holding assembly is placed into positionover the reinforcing rings; the internal seal face isaligned to within .001” and secured to the pipe bywelding The pipe holding assembly may be placedon any pipe axis
  14. 14. Installation Procedure The chain notching apparatus is assembled intothe pipe holding assembly and the pipeis notched Notching can be safely accomplished becauseaxial loads on the pipe are transferred through thepipe holding assembly
  15. 15. Installation Procedure The pipe is notched to a depth equal to 1/3of its minimum U.T. thickness reading Longitudinal stresses are carried by the pipeholding section Hoop strength of the notched pipe is unaffected,but can be calculated and has been verified byextensive in-house burst testingThe following is an example based on 1” pipe:
  16. 16. inchttn 119.0179.03232NOTCHED PIPE CALCULATIONPIPE SIZE: 1 inch nominal, 1.315 inches outside diameter, ASTM A106 Grade BWALL THICKNESS: 0.179 inch 1.) Wall Thickness and Outside Diameter after Notching Dn = outside diameter of pipe after notching Do = outside diameter of pipe before notching t = wall thickness before notching tn = wall thickness after notching (notch depth is 1/3 of t) 2.) Hoop Strength Based on Yield and Tensile Stresses at Temperature Pht = pressure calculated using Barlow’s formula and tensile stress at Temperature Phy = pressure calculated using Barlow’s formula and yield stress at Temperature St = tensile stress at 265°F for ASTM A106 Grade B Sy = yield stress at 265°F for ASTM A106 Grade B 3.) Longitudinal Strength Based on Yield and Tensile Stresses at Temperature Plt = pressure based on longitudinal strength and tensile stress at Temperature Ply = pressure based on longitudinal strength and yield stress at Temperature Ri = inside radius of pipe Rn = outside radius of pipe after notching (1/2 Dn)inchestDD on 196.1179.0312315.1312psiDtSPnnyhy 239,6196.1119.0350,3122psiDtSPnntht 939,11196.1119.0000,6022psiRRRSPiinyly 511,17479.0479.0598.0350,31222222psiRRRSPiintlt 515,33479.0479.0598.0000,60222222
  17. 17. Installation Procedure The thrust screw and seal nut assembliesare installed
  18. 18. Installation Procedure Sealant injection fittings are installedand pre-charged
  19. 19. Installation Procedure Assembly of the PLIDCO® Shear + Plug iscompleted by positioning the retraction housingand coupon receptacle housing on the pipeholding assembly
  20. 20. Installation Procedure The through-bolts are hydraulically tensioned andthe complete assembly is pressure tested toverify seal integrity
  21. 21. Installation Procedure The hydraulic cylinder is actuated,thrusting the shear blade through the pipe andpushing the coupon into the receptacle housing;allowing retrieval of the entire coupon
  22. 22. Installation Procedure The blind plate is indexed into position Thrust screws on the downstream sideare tightened, which push the blind plate againstthe housing seal face forming a metal-to-metalseal
  23. 23. Installation Procedure Sealant pressure is injected onto theseal face thereby verifying the seal With flow halted, the downstream linetemperature is diminished Residual pressure and content is blown downfrom the unit; work to the downstream line cansafely begin
  24. 24. Installation Procedure The coupon receptacle housing is loweredto remove the shear blade, guidance tracks, andthe sheared section of pipe
  25. 25. Installation Procedure The first completion cap is welded to the bottomof the pipe holding assembly
  26. 26. Installation Procedure When the downstream work is completed,the thrust screws are backed off andprocess flow is re-established The hydraulic cylinder is reversed, retracting theblind plate into the retraction housing assembly
  27. 27. Installation Procedure The retraction cock valve is rotated 90° andsealant is injected into the retraction cockannulus
  28. 28. Installation Procedure Residual pressure and content is blown downfrom the retraction housing and the unit isdisassembled
  29. 29. Installation Procedure The second completion cap is welded in placeon the top of the pipe holding assembly
  30. 30. Installation Procedure The completed pipe holding assembly remainsas a permanent part of the line
  31. 31. Case Histories
  32. 32. Case History #1Petroleum RefineryAlberta, Canada Inoperable valve in a 4” line carrying highoctane gasoline operating at 500 psi and465° F; threatened unit shutdown becauseprocess temperatures couldn’t bemaintained Plidco® Shear+Plug installed upstream ofthe faulty valve and utilized as an insertablegate valve, controlling process conditionsuntil the next scheduled turnaround in 2009
  33. 33. Case History #2Large, Midwestern U.S. Steel Mill A 6” 1400 psi boiler feed water line was inneed of pump repair Line used to send cooling water to thecontinuous caster process The backup pump was questionable as to itsability to run for an extended period of time Valving to the main pump was insufficient; notholding back enough back pressure to allow thepump to be rebuilt
  34. 34. Case History #2 (cont’d)Large, Midwestern U.S. Steel Mill PLIDCO® Shear+Plug isolated the pump andthe bad valve; the pump was rebuilt and thevalve replaced. Upon completion: The line was pressurized, revealing weld leaks The Shear+Plug was used to re-plug the line anddo additional repairs With space restrictions, the PLIDCO® Shear+Plugwas the only option as competitive solutions werenot able to fit in the area
  35. 35. Case History #3Polyethylene Plant - France A 2200 psi boiler feed line operating at 300°F. with considerable problems The PLIDCO® Shear+Plug isolated thesystem so faulty areas could be replaced With repairs complete, the Shear+Plug wasused as a test valve to verify system integrityprior to the line being brought back into fulloperation
  36. 36. Case History #4Petrochemical Plant - Texas Previous attempts to plug a superheatedsteam line using a product from a differentcompany were unsuccessful A PLIDCO® Shear + Plug with a positivemetal-to-metal seal, isolated the line 2 feetup stream of the failed unit, enabling repairsto be safely completed Avoided a costly system shutdown
  37. 37. Case History #5Petroleum Refinery – Midwest, U.S. A16” H2S line with a broken wafer valve onthe the actuator shaft Avoiding a shutdown of the extraction unit, aPLIDCO® Shear + Plug safely isolated thesystem so the broken valve could bereplaced This was accomplished without H2S releaseor a costly system shutdown
  38. 38. Shear + Plug
  39. 39. PLIDCO®Shear + Plug DivisionWorking together to make hazardous piping saferwww.plidco.com

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