Revision 1
Ill. Recommended Practices For The Use Of Manually Operated
High Pressure Water Jetting Equipment
A. Introduction
These recommended practices cover the personnel requirements, operator training, operating
procedures, and recommended equipment for the proper operation of all types
of
high
pressure water jetting equipment
as
normally used by industries concerned with construction,
maintenance, repair, cleaning, and demolition work. Attention is drawn
to
the relevant or
proposed
OSHA, ASTM and ANSI standards.
It
is intended that extension to this code will
be produced in due course to cover specialist applications (e.g., multiple-gun operation,
pulsed jets, cutting with the use
of
abrasives and high pressure intensifiers) but in the
meantime, these practices should be used
as
afar as practicable.
The use
of
high pressure water jets for cutting and cleaning is a rapidly evolving technology
with current developments occurring. For this reason, these practices are dated and the
association shall bi-annually review these practices for any required changes.
B.
Scope
1.
The recommended practices are intended
to
provide guidance on the proper operation
of
high pressure water jet cleaning and cutting equipment.
2.
In this document, the word "shall" indicates a requirement that is
to
be adopted in order
to
comply with these recommended practices.
3.
The term "high pressure water jetting" covers all water jetting, including the use
of
additives or abrasives at pressures above 1000 psi (70 bar) approximately.
4.
These recommended practices are also applicable at lower pressures where there is
foreseeable risk
of
injury. As a guideline, the recommended practices are applicable
where the product
of
pressure- measured in psi (bar), times flow- measured in gallons
per minute
(liters
per
minute) exceeds 2,000 psi times gpm (560 bar times lpm).
5.
Any person required
to
operate or maintain high pressure water jetting equipment shall
have been trained and have demonstrated the ability and knowledge
to
do so.
© Copyright January,
2001
NLB Corporation
2-12
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