7
INTRODUCTION
2.1.2.4
The tests for Grade 1 in Table 1 shall be repeated using a test wire
comprising a strip of wetted cotton cloth which has been attached to the
fixture by tourniquet action.
2.1.3 Load Release Hardware
2.1.3.1
The device shall be subjected to safety testing as shown in Table 2. The
anti-ligature device shall be mounted in a representative manner to
include any fixed associated mounting device on a surface which is also
of representative orientation to the vertical and horizontal. The ligature
test wire shall be either plastic coated with a fabric or metal core, or
nylon with a breaking strength >300N at the correct diameter for Test 2
and >20N at the correct diameter for Test 3.
2.1.3.2
For devices designed to be mounted on vertical surfaces, the test wire
shall be tied around the device as close to the mounting fixture as is
possible using a simple slip knot (see Annex B), and Test 2 carried out
using the required ligature test load which shall be applied by a weight,
in one direction, being downward. The device will release at a load
of less than 196N. Test 3 shall be carried out for any fixed associated
mounting device. If it is not possible to either start or complete the test
because the test wire does not remain attached to the anti-ligature
device or its associated amounting device, the test will be deemed
successful.
Table 1
Test
Sub Clause Figure Code
Safety Grade Criteria
Grade 1 Grade 2 Grade 3 Grade 4
5.5
B1
Ligature test wire diameter
>4mm 2mm 1mm 0.5mm
1
2.1.2.2 or
Ligature test load
5N
5N
5N
5N
2.1.2.3
+0 /-0.5N +0 /-0.5N +0 /-0.5N +0 /0.5N
Table 2
2.1.3.3
For devices designed to be mounted on horizontal and all other non-ver-
tical surfaces, the test wire shall be tied around the device as close to the
mounting fixture as is possible using simple slip knot and Test 2 carried
out using the required ligature test load which shall be applied by a
weight downwards in a plane parallel to the mounting surface. Test 3
shall be carried out for any associated mounting device. If it is not
possible to either start or complete the test because the test wire does
not remain attached to the anti-ligature device or its associated
mounting device, the test will be deemed successful.
2.1.3.4
If there are two or more fixings, one or more of the devices will release
when a load of less than 196N is applied at a point equi-distant between
two fixings.
2.1.3.5
The tests for Grade 1 in Table 2 shall be repeated using a test wire
comprising a strip of wetted cotton cloth which has been attached to the
fixture by tourniquet action.
Test
Sub Clause Figure Code
Test Parameter
5.5
B1
Ligature test wire diameter
>4mm
2
2.1.3.2 or 2.1.3.3
Device test load per fixture
<196N
or 2.1.3.4
3
2.1.2.2 or 2.1.2.3
Associated mounting device test load
See Table 1
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Dorplan
