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EN 1149-5:2018
The following standard (EN 1149-5:2018) specifies the performance requirements
for protective clothing which are made from flexible materials and designed to
protect the body. This protective clothing fulfils the material and design require
-
ments for electro-
static dissipative protective clothing, used as part of a
total earthed system, to avoid incendiary discharges. The
requirements may not be sufficient in oxygen enriched
flammable atmospheres. This clothing is not effective for
protection against mains voltages.
EN 1149-5:2018
Protective clothing with electrostatic properties to avoid
flammable discharges. The performance requirements for
materials and construction are defined in section 5. The
associated testing method for electrostatic conductive
material is based on measuring charge decay as per DIN
EN 1149-3:2004, testing method 2 (electrostatic induction charging). The anti-static
protection is only effect if the person/clothing is safely earthed, for example by
anti-static shoes pursuant to EN ISO 20345 with additional requirement A or
occupational footwear pursuant to EN ISO 20347 with additional requirement A. The
electric resistance between person and earth must be less than 10
8
Ω. No gap may
appear between the two pieces of clothing during movement at work. The jacket
must remain done up whilst working. All pockets must be covered by the jacket. All
items of clothing underneath the shirt which do not have electrostatic conductive
characteristics must be covered up by the protective clothing during every
movement of the body. Protective clothing must not be undone or taken off in a
flammable or explosive atmosphere or when handling flammable or explosive
substances. Clothing must not be taken off in areas at risk of explosion. Electrost
-
atic dissipative protective clothing is therefore designed to be worn in Zones 1, 2,
20, 21 and 22 (see EN 60079-10-1[7] and EN 60079-10-2[8]) where the minimum
ignition energy of a potentially explosive atmosphere is no less than 0.016 mJ. A
special risk analysis specific to the situation must be carried out before use in
potentially explosive areas of Zone 0 and in the presence of highly explosive
gas/vapours of explosion group IIC and electrostatically dissipative protective
clothing is not allowed to be worn without the prior approval of the safety officer.
When entering potentially explosive areas please ensure that all pockets are closed
and no items could stick out or fall out of them.
During a required risk assessment the wearer is to be advised what must be
assessed for protection against heat and flame through electrostatic protective
clothing (also see the minimum requirements of Appendix II of Directive
1999/92/EC).
Protective clothing
Electrostatic
properties
Ageing:
The life span of an item of clothing
depends on its use, care and storage.
The clothing has been washed five times
under laboratory conditions in
accordance with the instructions without
any problems.
Further ageing processes and
indications are:
Effects of UV light
Extreme temperature changes
Major visible changes (abrasion points,
thinning, rips, holes, significant colour
changes etc.)
Damaged fastenings (zips, velcro,
buttons)
Damaged seams (open or defective)
Effects of chemicals and/or moisture
Mechanical effects (abrasion, bending
stress, stress caused by pressure and
tension etc.)
The protective clothing should be
manually and visually inspected to
ensure that it is free from sharp and
hard edges, protruding wire ends,
rough surfaces and other details on
the inner or outer surfaces of the
clothing which could lead to the injury
of the user or other persons.
In the event of inadvertent contact with
liquid chemicals or combustible liquids
the wearer must withdraw from the
situation without delay and remove the
clothing so that these substances do
not come into contact with the skin.
The protective clothing must be
cleaned before it is reused. In the
event of accidental contact with
splashes of molten metal the risk of
burns should not be excluded if
clothing is worn directly next to the
skin. The wearer must the withdraw
from the situation without delay and
remove the clothing.
In the event of enormous stress and
heavy perspiration the activity should
be stopped to avoid health risks.
The fit of the clothing must be checked
after every wash.
The wearer of the protective clothing
must be in a position
to carry out the following movements:
Standing, sitting, walking and
climbing stairs
Stretching both hands above the
head
Bending over and picking up a small
object such as a pen
The following should be taken into
account:
The sleeves and trouser legs of
clothing should not be so long that
they impair the movement of hands
and feet.
The clothing should not be so loose
that it flaps around or moves around
independently in a disrupting manner.
There should be no areas where
unwanted or unintended gaps arise
between or within parts of the
clothing.
There should be no unwarranted joint
movement restrictions.
The ease of putting on or taking off
the clothing with or without assistance
in accordance with the type of the
clothing.
In relation to comfort the clothing
should not be too tight or prevent the
wearer from taking deep breaths and
must never restrict circulation.
Accessories, such as belts, should be
made from flame retardant material or
leather and not contain any metal
parts.
Liquid, dirt and sweat may decrease
the electrical isolation.
An increased amount of oxygen in the
air significantly reduces the protection
against catching fire (e.g. welding in
combined spaces).
The electrostatic conductive capacity
may be impaired by wear and tear,
cleaning and possible dirt.
The following should be observed when
filling pockets:
Pockets must always be closed
Items may not stick out
Items may not fall out
Obvious reasons why the clothing is not
suitable:
The person who tried on the item of
clothing cannot wear it
The protective clothing won't remain
done up or in the correct place
It impairs a vital function, such as
breathing
It is not possible to carry out simple
tasks while wearing the protective
clothing
The person declines the protective
clothing due to pain
The protective clothing prevents other
important items of PPE from being
worn
Sizing system:
The European sizing system refers to
body measurements making it easier to
select correctly fitting protective
clothing.
Cleaning / repair:
Protective clothing should be maintained
in proper condition and it should be
checked at regular intervals for wear and
tear, damage and to ensure it is still fit
for purpose.
Repairs must be carried out by experts
in order to retain the performance of the
protective clothing.
The material's suitability for use should
be checked after each cleaning cycle.
The clothing must be completely
replaced after 50 wash cycles.
Detergent:
No optical brighteners with a high alkali
content, organic solvents or free sodium
hydroxide/calcium hydroxide may be
used. Detergent must not contain any
oxidising agents.
Drying:
Do not over dry.
Air drying
Tunnel finishers: Tests should be run
before using a tunnel finisher. The
clothing may be subject to uneven
shrinkage due to the large amount of
material.
Neutralising:
The laundry must be effectively
neutralised. The neutralising agent
must not contain any oxidising agents.
Contamination:
The clothing can be disposed of by
incineration or by sending to landfill.
Protective clothing which is
contaminated with hazardous
substances must be disposed of as
hazardous waste.
Contamination, for example by dirt, oil,
splashes of molten metal etc.
Wear and tear
Innocuousness:
Protective clothing may not affect the
health or hygiene of the user.
Storage:
Store the clothing in a dry, dust-free, dark
environment without extreme temperature
fluctuations in its original packaging.
The maximum storage time is 10 years.
Keep away from direct sunlight.
As per the EU type
examination
no
subsequent alterations are permitted to
the clothing apart from those that were
examined as part of the certification.