When a torque value is not specified in an individual Work Package (WP), use the procedures in this WP to

determine proper torque limits and use of adapters with torque wrenches.

When an adapter is necessary due to space or type of fitting being torqued, it must be determined how the

adapter changes the amount of force applied. If the adapter increases or decreases the distance from the drive of

the torque wrench to the fitting being torqued, an equation must be used to compensate for the difference.

The following abbreviations apply to the procedures below:

DT = Desired Torque

LT = Length of Torque Wrench

AL = Adapter Length

AT = Applied Torque

1.

If the adapter used decreases the distance between the center of the torque wrench handle and the

center of the drive, first find the desired torque for the fitting, then calculate as follows:

Figure 1. Torque Wrench Drive Centerline.

a.

Multiply DT by LT.

b.

Subtract AL from LT.

c.

Divide the first answer by the second answer to find AT.

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