BS EN 443-2008 pdf download.Helmets for fire fighting in buildings and other structures.
4.13.1 Areas la,lb
The helmet may be tested in accordance with 5.15.1, If tested, there shall be no visible damage to the shell
and the fitting devices.
4.13.2 Areas 3a, 3b
The helmet may be tested in accordance with 5.15.2. If tested, the components protecting area 3a and/or 3b shall conform to the requirements of EN 469:2005, 6.10. Where area 3b protection is provided by a face protector complying with EN 14458, testing of this area is not required.
4.14 Field of vision
When the helmet is tested in accordance with 5.16 the wearefs field of vision shall correspond to the following angles:
a) horizontal field of vision of not less than 1050;
b) vertical field of vision in the upwards direction of not less than 7°;
C) vertical field of vision in the downwards direction of not less than 450W
The specified field of vision shall be achieved with a face protector In its in-use and out-of-use positions. The periphery of the face protector may fall within the specified field of vision.
NOTE The face protector should not restrict the users’ awareness of the surroundings.
4.15 Extent of protection
4.15.1 Area Ia and area lb
When the helmet is tested in accordance with 5.17:
a) type A helmets shall protect at least area 1 a;
b) type B helmets shall protect at least area Ia and area ib;
C) protection shall be provided by the helmet assembled without any non-integral components, accessories or optional parts.
In the case of an integral face protector being fitted, a contribution to pi-otection may be provided by the face protector, so long as the face protector is in its out-of-use position.
4.15.2 Area 3b (optional)
Helmets may provide protection for the optional area 3b.
If this protection is provided it shall:
a) protect at least the area CDHG of the medium headforrn, defined in Figure 2, when assessed In accordance with EN 168:2001,10.2;
NOTE Helmets fitted with a face guard conforming to EN 14458 are considered to satisfy this requirement.
b) be provided by the helmet assembled without any non-integral components, accessories or optional parts, apart from those optional parts specified in the information supplied by the manufacturer as being necessary to provide the claimed protection. If the size range of the helmet does not permit the helmet to fit the test headform, then a claim of protection of area 3b cannot be made for that size of helmet.
5 Test procedures
5.1 Sampling and helmet adjustment
5.1.1 Sampling
Helmets shall be submitted for testing in the condition in which they are offered for sale, including any requisite holes or other means of attachment, for any item(s) as defined in 3.17, 3.18 or 3.19.
If several sizes of helmet are available then the size representing the most unfavourable helmet in relation to the headform size shall be used.
5.1.2 Helmet adjustment
Before any testing on a headlorm, the helmet shall be adjusted in accordance with the manufacturer’s instructions.
The headforms for use in this European Standard shall be sizes 495, 535, 575, 605 and 625 complying with EN 960:2006 or the medium size complying with EN 168:2001, as appropriate to the test performed.
If the wearing adjustment covers several sizes of headform then the size of headfocm representing the most unfavourable case shall be used.
5.2 VIsual inspection
A visual inspection shall be performed prior to laboratory tests.
a) perform the impacts In accordance with EN 13087-2:2000, 5.2, falling mass method, using the hemispherical striker. The mass of this striker shall be (5,0 ± 0,05) kg, rather than that stated in
EN 13087-2;
b) impact energy shall be (123 ± 3) J;
c) headform shall be rotated so that the impact point lies along the axis through the striker and transducer, Allow the striker to fall on to each of the 5 impact points shown in Figure 3;
d) where samples have been initially conditioned in accordance with 5.3.5, 5.3.6. or 5.3.7, the first impact shall be performed within one minute of removal from conditioning and subsequent impacts within five minutes. If further impacts are required, samples shall be returned immediately to the conditioning chamber for at least I h before further impacts.
5.4.2 Areas Ia and lb
The helmet shall be tested in accordance with EN 166:2001, 7,2.2, with the following modificat,ons:
a) test in EN 166:2001. 7.1.4.2.2 is not performed;
b) steel ball is projected at a speed of 120 m/s;
C) for Type A helmets, impacts shall be directed within the zone described above the line AA (see Figure 1);
d) for Type B helmets, impacts shall be directed within the zone described above the line ACDEF (see Figure 1);
e) impact point of the ball shall be at any point of the helmet at least 5 mm inside the edge of this zone;
f) sheet of carbon paper, on top of a sheet of white paper, is attached to the headform at the impact points;
g) impact tests shall be conducted on both areas Ia and lb (as appropriate to the type of helmet) and additionally at any areas of different construction, as assessed by a visual inspection;
h) number of impacts shall be determined as appropriate to the type of helmet (A or B) and any areas of different construction, as assessed by a visual inspection;
I) mulhple impacts may be performed on the same sample, but there shall be a minimum separation of 15 mm between impact sites. In the case of samples initially conditioned in accordance with 5.3.5, 5.3.6. or 5.3.7, the first impact shall be performed within one minute of removal from conditioning and subsequent impacts within five minutes. If further impacts are required, samples shall be returned immediately to the conditioning chamber for at least lh before further impacts;BS EN 443-2008 pdf download.