Team Industrial Services

 

 

 

Hot Taps & Line Stops

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Services

Hot Taps, Line Stops

Hot Tap
Line Stop
Double Line Stop

Freeze Stop

Bag Stop

HiStop®

Specialty Line Stops
Offshore Services
Pipeline Services

Water and Wastewater
InsertValve™ Installation

Pipeline Pigging Wye Installation

 

 

Call 1-800-662-8326 for information or click here to schedule a Lunch & Learn

 

Double Line Stop

When an existing valve is not conveniently located near the work area, Team technicians can perform Double Line Stops to isolate the area. The primary types of Double Line Stops are described below along with the basic steps.

 

Double Stop

 

Standard Double Line Stop
  • Two SealTite® fittings welded to the line
  • Temporary valves installed and two line stop taps completed
  • The two line stops are set and the pressure vented
  • The work between the two line stops is completed
  • The line stops are equalized and removed
  • Team’s SealTite® completion plugs are set and the temporary valves removed

 

Double Block and Bleed
  • Two SealTite® fittings welded to the line.
  • Temporary valves installed and two line stops taps completed.
  • The two line stops are set and the pressure vented downstream of both line stops
  • The primary line stop holds the pressure while the secondary line stop ensures a 100% safe seal.
  • The work downstream is completed.
  • The line stops are equalized and removed.
  • Team’s SealTite® completion plugs are set and the temporary valves removed.

 

Double Line Stop With Temporary Bypass
  • Four SealTite® Fittings welded or bolted to the line
  • Temporary valves installed to the fittings and Line Stop taps completed
  • The bypass installed and the temporary bypass valve opened
  • Line Stop machines installed to the SealTite fittings and lowered to the set position
  • Piping between the two Line Stops is de-pressurized and repaired
  • The repaired section is equalized and the Line Stops removed
  • Temporary bypass removed and SealTite completion plugs installed in the four fittings
  • Equipment is removed and blind flanges installed to complete the project

 

 

 

Double Line Stop