(c)
Dermatitis results only from direct contact
(a)
Amount of beryllium dust deposited on skin from
heavy suspension in air will cause skin reaction
(e)
Material accumulated in work clothes and at con-
tact surfaces of dust respirators
(f)
Dermatitis disappears after an individual is removed from exposure
d.
e,
Maximum permissible air concentrations are very stringent
(1)
Average in-plant concentrations
(2)
Out-of-plant concentrations
Controlling beryllium hazards
(1)
(2)
(3)
(4)
Plant design and operation
(a)
Wet processes
(bo)
Operations designs
Ventilation and air cleaning
(a)
Local exhaust ventilation
(vo)
Air is cleaned before entering exhaust stacks
Personal hygiene of employees
(a)
Special clothing and respirators
(b)
End-of-shift showers
(c)
Frequent washing
New employees indoctrinated in company rules for safe
working practices
(5)
Frequent air sampling
y
.
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