1 The existing paragraph 2.1.2 is replaced by
the following two new paragraphs:
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"2.1.2.1 Breathing apparatus shall be a self-contained
compressed air breathing apparatus for which the volume of air contained
in the cylinders shall be at least 1,200 l, or other
self-contained breathing apparatus which shall be capable of functioning
for at least 30 min. All air cylinders for breathing apparatus shall
be interchangeable.
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2.1.2.2 Compressed air breathing apparatus shall
be fitted with an audible alarm and a visual or other device which
will alert the user before the volume of the air in the cylinder has
been reduced to no less than 200 l."