Revision 1
J. Operational & Training Requirements
1.
Qualified operators - Only trained personnel shall operate high pressure water jetting
equipment and supervise the training
of
new operators.
2.
Training - A personnel training program shall be developed by each employer and be
presented to each employee before assignment
to
employee's first high pressure
cleaning or cutting job.
Such training shall include, as a minimum, coverage of all
items listed in these recommended practices.
3.
Cutting action - The cutting action
of
a high pressure water jet and the potential
hazard it poses
to
the human body shall be demonstrated through the use
of
audio/visual aids or actual use
of
equipment (i.e., by cutting through a piece
of
lumber,
concrete block, etc.).
4.
Personal protective equipment - The minimum personal protective equipment shall
be explained. Instructions shall be given
as
to
when and how specific clothing and
other types
of
protective devices shall be worn according to the type
of
work
performed, locations, etc.
5.
System operation - The operation
of
the system shall be explained with potential
problems pointed out and proper corrective action.
6.
Control devices - The operation
of
all control devices shall be explained. The
importance
of
not tampering with any control devices as well as the importance
of
keeping them in proper working order shall be stressed.
a.
Equipment maintenance -
It
should be pointed out that valves and seating surfaces in
pressure regulating devices encounter high wear during high pressure water jetting.
These items require frequent inspections, maintenance and/or replacements in order to
provide operation.
7.
Hose - The proper method of connecting hoses, including laying out without kinks,
protection from excessive wear, and proper tools
to
use on couplings and fittings shall
be explained.
8.
Stance - The proper stance for sound footing and how to use the various devices for
lancing, shotgunning and moleing shall be demonstrated. The trainee, under close
supervision, shall use the various devices while the unit is slowly pressurized.
9.
Proficiency - Personnel shall demonstrate knowledge and skill in the proper operation
of
equipment through practical application.
10. General
a.
System shall be de-pressurized when:
• Not in use
•
An
unauthorized or inadequately protected person enters the barricaded area
© Copyright January,
2001
NLB Corporation
2-27
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