BS EN 812:2012 pdf download
BS EN 812:2012 pdf download.Industrial bump caps.
4 Physical requirements
4.1 Materials and construction
The bump cap may consist of a smooth shell. which may be enclosed by an outer covenng. The bump cap shall Incorporate means to absorb the energy of an Impact
NOTE Reoomrnendalions for materials and construction of bump caps are given in Annex A.
For those parts of the bump cap that come Into contact with the skin. materials which are known to be likely to cause skin rntation or any adverse effect on health shall not be used.
There 5hali be no shp edge. roughness or protection on any part of the bump cap wti.ch is in contact, or potential contact, with the wearer when the bump cap is worn, such as is likely to cause iniury to the wearer.
Any part of the bump cap which can be adjusted, or removed by the wearer for the purpose of replacement, shaM be so designed and manufactured as to facilitate adjustment, removal and attachment without the use of tools.
Any adjustment stem incorporated within the bump cap shall be so designed and manufactured as not to become iocorrectty adjusted without the wearer’s knowledge under the foreseeable conditions of use.
4.2 Cradle
If the bump cap is fitted with a cradle incorporating texide tapes, their individual widths shaM be not less than 15mm, and the total of the widths of the tapes radiating from their mterseclion shall be not less than 72 mm.
NOTE Further reference to textile tapes Is made In Annex A.
4.3 Comfort band or sweatband
If a sweatband is provided, it shall cover the inner front surface of the headband, if fitted, for a length of not less than 100 mm each side of the centre of the forehead. The length shaM be measured with a flexible measure along a line (10± 1) mm above the lower edge of the headband. It shall have a vedth not less than that of the headband over the length which it covers.
NOTE Recommendations regarc5ng characteristics of the sweatband, W fitted, aie given in Annex k
4.4 Retention
Means shall be provided to secure the bump cap on the wearers head. Any one of the following Is deemed to satisfy this requirement
a) external coverings to the shell which icorporate an elasticated rear section, passing below the plane of the headband;
b) a nape strap:
C) a chin strap or means of attaching one.
4.5 Headbandinape strap
The length 01 the headband or the nape strap, if fitted, shall be adjustable in increments of not more than 5mm.
4.6 Chin strap
Unless specific provision made for the bump cap to be retained on the head by other means, the bump cap or the harness shall be fitted with a cliii strap or with means of attaching one. Any chin strap supplied with the bump cap shall be not less than 10 mm wide Mien un-tensioned and shall be attached either to the shell or to the headband, if fitted.
4.7 Ventilation
If the bump cap is provided with holes for ventilation purposes, the total area of such holes shall be not less than 150 mm2 and not more than 450 mm2.
NOTE I Means of closing the venlilahon holes may be provided.
NOTE 2 If such meaiie – provided, the holes shoiM be opened to the maximum extent when the above measurement Is prformed
NOTE 3 Recommendations regarding design for ventilation are given ii Annex A
4.8 Accessories
For the fixing of bump cap accessories, specified in the Information accompanying the bump cap in accordance with 7.2.3. the requwed fixing devices, or appropriate holes In the bump cap, shaM be provided by the bump cap manufacturer.
5 Performance requirements
5.1 Mandatory requirements
5.1.1 Impact protection
When a bump cap is tested by the method given in 6.5. the force transmitted to the headform shall not exceed 15.0 kN. This requirement shall be satisfied by bump caps treated in accordance with the appropriate conditioning processes given ii 6.2, as specified by the list of tests given in 6.1
5.1.2 Resistance to p.n.tratlon
When a bump cap ia tested by the method given ii 6.6. the point of the striker shall not contact the sia’face of the headfomi. This requwernent shall be satisfied by bump caps treated in accordance with the appropriate conditioning processes given in 6.2, as specified by the list of tests given in 6.1.
5.1.3 Chin strap anchorages
When a bump cap is fitted with chin strap anchorages, these shall be tested in accordance with 6.7. The artificial jaw shall be released at a force of not less than 150 N and not more than 250 N, due to fadure onty of the anchorages.
5.2 Optional requirements
5.2.1 V.ry low temperature (-20 C or —30 C)
When tested for impact protection by the method given in 6.5. the requirement of 51.1 shall be satisfied by one bump cap which has been conditioned in accordance with 6.2.
