BS EN 792-13-2000 pdf download.Hand-held non-electric power tools – Safety requirements Part 13 : Fastener driving tools.
6.1.2.2 Protection against unintentional trigger actuation
Functional testing is carried out to confirm that the trigger is fitted in such a manner that it cannot be actuated unintentionally. For this purpose the fastener driving tool is moved several times to and fro over a level surface with a cylindrical obstacle of a maximum of 15 mm in diameter and 5 mm in height.
6.1.3 Protection against free flight of fasteners
To establish whether or not a safety yoke is required for the fastener driving tool, the assessment procedure set out under 5.1.3 is carried out.
6.1.4 Design of the safety yoke
A measurement is to be carried out to ascertain whether the requirement is satisfied as set out under 5.1.4.
6.1.5 Design of fastener driving tools with safety yoke
6.1.5.1 Functional testing is carried out to ascertain whether a safety yoke fitted is functionally safe in operation.
6.1.5.2 Measurement and functional testing is carried out to ascertain whether the actuating system of the tool meets the requirement of table 1.
6.1.5.2.1 Fastener driving tools for driving fastener lengths> 130 mm equipped with full sequential
actuation and ≤ 130 mm equipped with single sequential actuation:
The fastener driving tool fitted with a safety yoke shall be pressed with the muzzle against the workpiece and activated. Upon removal of the tool from the workpiece. the safety yoke shall return to its non driving position. This test shall be conducted in various positions e.g. downwards, upwards and horizontally.
Where on compressed air operated fastener driving tools the safety yoke manipulates compressed air operated parts, the test is made at 80 % Ps max’
6.1.5.2.2 Fastener driving tools for driving fastener length ≤ 100 mm > 65 mm equipped with contact actuation:
The weight of the tool without fasteners is to determine.
The fastener driving tool is pressed with the safety yoke perpendicular against the surface of a weight measuring scale laminated with a suitable test material. By actuating the trigger, the tools shall not perform a driving operation unless the pressing force is greater than 125% of the tool weight.
Where on compressed air operated fastener driving tools the safety yoke manipulates compressed air operated parts, the test is made at 80 % P max
6.1.5.2.3 Fastener driving tools for driving fastener length ≤ 65 mm equipped with contact actuation:
The weight of the tool without fasteners is to determine.
The fastener driving tool is pressed with the safety yoke perpendicular against the surface of a weight measuring scale laminated with a suitable test material. By actuating the trigger, the tools shall not perform a driving operation unless the pressing force is greater than 60% of the tool weight.
6.1.6 Test of housing strength
6.1.6.1 Those parts of the housing of the fastener driving tool which are important in terms of safety are subjected to a test using impact test equipment conforming to EN 50144-1, and an impact energy of
(1,0 ± 0,05)Nm.
6.1.6.2 In the case of fastener driving tools operated by compressed air, a pressure test is carried out over a period of 120 seconds and 1,5 ( (P max+ 10% measurement uncertainty).
Leakage losses via seals will not be queried.
6.2 Electrical safety
In case of fastener driving tools operated by internal combustion, functional test is made to ascertain that the requirement set out under 5.2 is satisfied.
6.3 Thermal safety
6.3.1 Hot surfaces
An examination is to be carried out to confirm that the surface temperature of the handles or of other surfaces of fastener driving tools operated by internal combustion which can be touched by the operator during operation do not exceed the limit values set Out in EN 563.
For this purpose, the fastener driving tool is brought up to a surface temperature of 20°C ± 2°C prior to carrying out the measurements. The fastener driving tool is then operated for a period of 5 minutes with 12 driving operations per minute, and the surface temperatures thus produced measured in accordance with EN
563, 5.2.
6.3.2 Cold surfaces
6.3.2.1 In the case of compressed air operated fastener driving tools. an examination is to be carried out to confirm that the surface temperature of the handles does not fall by more than 5 K during operation. The surface temperatures of the handles of the fastener driving tool are measured and recorded as initial values, after which the fastener driving tool is operated for a period of 5 minutes at a frequency of 12 operations per minute. During this procedure. the supplied compressed air must exhibit a temperature conforming to the initial values of the handles of the tool. The resultant surface temperatures are thereafter measured and recorded as final values.
The surface temperature measurements are carried out in accordance with EN 563, 5.2. The requirement is satisfied if the following condition is fulfilled:
initial temperature value – final temperature value s 5 K
6.3.2.2 In the case of fastener driving tools operated by internal combustion, an examination shall be carried out to confirm that the handles will not ice up by reason of any incidentally release of gas when inserting or removing the gas dispenser.BS EN 792-13-2000 pdf download.