3.3 Related Publications
TDWFrance-22-E-03-09 user manual provides
procedures for preparation of the pipe and
installation of the fitting by the electrofusion
process. Other publications of interest include:
•00-3795-0115 : T-203b Tapping
Machine
4.0 Safety
4.1 Protective Clothing
Protective clothing is recommended whenever
working around machinery. Suggestions
include use of a hard hat, gloves, safety glasses,
safety shoes, garments to cover exposed areas
of skin, and breathing apparatus when toxic
atmosphere exists.
4.2 WARNINGS and Cautions
The purpose of WARNINGS and Cautions in
this manual is to call the operator's attention to
the possible danger of injury to personnel and
damage to equipment and deserves careful
attention and understanding.
A. WARNING: A Warning indicates a
potentially hazardous situation which, if
not avoided, could result in death or serious
injury and damage to equipment.
B. Caution: A Caution indicates a potentially
hazardous situation which, if not avoided,
may result in minor to moderate injury and
damage to equipment. It may also be used
to alert against unsafe practices.
4.3 Proper Grounding
Polyethylene pipe often has internal and external
electrostatic charges that can be hazardous to
personnel and equipment. Develop and use
procedures that provide a grounding system to
eliminate this hazard. The following can be used
as a guideline.
A. Minimize the external charge by wet-
wrapping (or equivalent method) the pipe
outside before installing the SHORTSTOPP
II System.
B. Ground the equipment as follows:
1. Before making the tap, attach the
TDW provided ground strap assembly
from ground to the valve-support.
2. When using the plugging machine for
plugging or completion plug setting,
attach the ground strap assembly to the
valve-support.
WARNING: Before tapping, plugging or
setting a completion plug,
properly ground equipment to
eliminate any static electricity.
Electrostatic charges can be
hazardous to personnel and
equipment.
4.4 Pipe Support
It is mandatory to provide blocks under the pipe
to support the weight of the equipment.
5.0 Equipment Orientation
Use of directional words such as "up," "down,"
"raise," and "lower" throughout this manual
assumes the fitting and valve are mounted on top
of the line and the tap is made vertically through
the top of the pipe. If the valve is installed and
the tap is made in any other orientation,
substitution of appropriate directional words will
be required.
