Safety and hea'th in building and civil engineering
32.14.19.
Spillage
occurring during transport should be
constantly cleaned up.
32.14.20.
Adequate precautions should be taken to reduce
the formation and spillage of dust on conveyors as
much as
practicable.
32.14.21.
Fine dust adhering to the belts of belt conveyors
should be removed continuously and collected.
32.14.22.
The movement of conveyors should, as far as
practi cable, be so regulated that no material will
accumulate at transfer
points.
Stone crushing
32.14.23.
If any stone-crushing equipment is used under-
ground, adequate measures should be taken to prevent any
dust
from it penetrating to areas occupied by workers.
Airborne dust
32.14.24.
Airborne dust should be precipitated, filtered or
removed to the outside air.
32.14.25.
Extracted dust should be removed in dust-tight
containers or in the form of mud after wetting.
32.14.26.
Filters should be cleaned at suitable intervals to
maintain them in an effective working condition.
32.15. Underground pipelines
32.15.1.
Adequate ventilation should be provided for workers
in pipelines.
32.15.2. When laying pipes in water-bearing
ground, a flood
gate should be provided at the end section.
32.15.3.
When high-pressure pumps are used:
they should be tested before they begin to work;
the pressure gauge should be kept under observation;
and
the maximum safe working pressure should not be
exceeded