8.
Tighten the force screw to a torque value between 70 to 80 ft-lbs (or 95 to 109 Nm). Completed
assembly should look as shown in Figure 5, less the pilot pin.
If the pipeline has been shut down, re-pressuring should be done with extreme caution. Re-pressuring
should be accomplished slowly and steadily without surges that could vibrate the pipeline or produce a
sudden impact load. Industry codes and standards are a good source of information on this subject. Except
for testing purposes, do not exceed the design pressure of the PLIDCO fitting. Personnel should not be
allowed near the repair until the seal has been proven.
•
PLIDCO Smith+Clamps should be stored in a dry environment.
•
Storage temperatures should be between 32°F(0°C) & 120°F(49°C).
•
Cover with dark polyethylene to keep the direct sunlight from the seal cone.
•
It is best to exclude contamination, light, ozone, and radiation.
•
Improperly stored PLIDCO Smith+Clamps can cause the seal material to become cracked, brittle and
lose its ability to seal.
Welding is not required. However, if it is desired to make the Smith+Clamp a permanent repair, the following
options are available from PLIDCO.
•
PLIDCO Smith+Clamps smaller than 3.5-inch nominal pipe size are not weldable. However, if welding
is required a special oversleeve that fully encloses the Smith+Clamp can be designed and furnished
through PLIDCO. Welding instructions are supplied with the oversleeve.
•
PLIDCO Smith+Clamps 4-inch nominal pipe size and larger are weldable by using a PLIDCO
Weld+Cap. Contact PLIDCO if a Weld+Cap is required. Welding instructions are supplied with the
Weld+Cap.
1.
After the pipeline is re-pressurized (see Re-pressuring for precautions) the torque values should be
checked again 4 hours after installation. Then, the torque values should be checked again 24 hours
after that.
2.
It is recommended that torque striping be applied from the drawbolt to the thrust nut of the PLIDCO
Smith+Clamp so that any loosening of the bolts or screws can be visually seen during an inspection.
3.
6 months after installation it is recommended that a visual inspection occurs that checks for visible
signs of leakage, bolt/nut loosening, and general wear or corrosion.
4.
After the 6-month inspection occurs, a yearly visual inspection is recommended that checks for visible
signs of leakage, bolt/nut loosening, and general wear or corrosion.
Re-pressuring
Storage Instructions
Welding
Recommended Inspection Schedule
Page 5 of 5
IP-031
Revision 2