Moxy MT 31 - 0.2.2 Vibrations; 0.2.3 Injurious Noise

SHOP MANUAL MT26/31 - 12.2004SHOP MANUAL MT26/31 - 12.2004
GENERAL
CH 0 PAGE 6 CH 0 PAGE 7
GENERAL
SHOP MANUAL MT26/31 - 12.2004SHOP MANUAL MT26/31 - 12.2004
GENERAL
CH 0 PAGE 6 CH 0 PAGE 7
GENERAL
When using vibrating tools e.g. chisel hammer, impact drill,
impact nut runner, grinder injuries may be sustained by transition
of tool vibrations to the hands.
Risks
Vibrations may cause vascular spasms (prickling and pain) in the
surface veins. The fingers turn white, cold and senseless. Also
nerves, muscles, bones, sinews and joints may be injured.
The risk of injury is believed to increase by smoking and also
by low temperatures e.g. if the tools are cold or if the hands are
exposed to chilling air.
The injuries become apparent especially when the fingers are
cold, often when not working.
Vibration injuries are curable if taken care of in time.
Protective measures
Use heavy gloves. Gloves provide some protection
against vibrations and low temperatures.
Alternate between vibration-free and vibrating jobs to provide the
body with a possibility to rest from vibrations. By varying the work
posture and grips, the body is not one-sidedly exposed to vibra-
tions.
Avoid smoking before and during the work to help the blood cir-
culation as much as possible. If you notice any signs of vibration
injury consult a doctor.
Protection against vibration
• Heavy gloves
• Alternate jobs
• Do not smoke before and during the work
Rule of thumb: Noise that is louder than 85 dB (A) and that
prevails for more than 8 hours is classed as injurious. (Some
countries have other limits.) High frequency noise (high-pitched)
is more injurious than low frequency noise (low-pitched) of the
same amplitude.
Risks
Partial deafness, in difficult cases impaired hearing beyond cure.
It is impossible to train your tolerance to noise. You may believe
that you are doing that if you notice less of the noise after some
time.
IN THAT CASE YOU ARE REALLY IN DANGER.
Probably your sense of hearing is already impaired.
Protective measures
With noise absorbers on roof and walls and screens between
work places it is easier to limit the propagation of noise. Against
injurious noise you have to protect yourself with ear muffs. Ear
muffs must be tested and approved.
Protection against noise:
• Use ear muff
0.2.2 Vibrations
0.2.3 Injurious Noise