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For this reason, the blasting contractor must always determine which type of paint is to be removed
and, if necessary, ensure that operators wear a blast hood or helmet that is approved for use with
these substances or an additional respirator.
Lead poisoning may cause death. The maximum workplace concentration has been defined as 0.1
mg/m³ of air (TRGS 900).
In accordance with DGUV Regulation 112-190, Class 4B blast protection equipment can be used at
up to 500 times the threshold value.
2.4 Ear protectors
Ear protectors must be worn when using the blast helmet.
2.5 Expiry date of the PPE or certain of its components
The equipment must be properly serviced, maintained and stored. All rubber components must be re-
placed at the latest 5 years after the date of manufacture. It is recommended that the blast helmet is
replaced after a maximum of 10 years.
3 Description of the Equipment
The minimal version of the blast helmet consists of the following components:
•
Helmet with chin strap, suspension and cape
•
Breathing air line (length approx. 1,000 mm)
•
Air supply line (length 5 m) with quick coupling (female)
•
Air control valve with belt
•
Hood
4 Preparation
Check and/or prepare the following components:
(1) Adjust the helmet sus-
pension.
−
Fit the helmet suspension to the operator’s head using the adjusting
screw and adjust the chin strap to the correct length (see also 7.2).
(2) Check that the lens sys-
tem is in place.
−
Inner lens (replacement, see 8.1)
−
Outer lens (replacement, see 8.2)
−
Perforated cover lenses (replacement, see 8.2)
The blast helmet should never be used without the inner lens, outer
lens and cover lenses in place.
(3) Air supply line
−
Attach the air supply line to the air control valve using the quick cou-
pling.
−
Attach the other end of the line to the air filter, either CPF-20 or CPF-
80 (more than one operator).
Never carry the blast helmet by the air line but always use the han-
