AS NZS 4024.1803:2014 pdf free download – Safety of machinery Part 1803: Safety distances and safetygaps—Minimum gaps to prevent crushing of parts of the human body

AS NZS 4024.1803:2014 pdf free download – Safety of machinery Part 1803: Safety distances and safetygaps—Minimum gaps to prevent crushing of parts of the human body.
a) identity the crushing hazards;
b) assess the risks from these hazards in accordance with ISO!TR 12100-1, paying particular attention to the
following:
— where it is foreseeable that the risk from a crushing hazard involves different parts of the body, the
minimum gap given in table 1 relating to the largest of these parts shall be applied Isee also d)1.
— the unpredictable behaviour of children and their body dimensions if children are included in the population
at risky
— whether parts of the body could enter the crushing zone in a configuration other than those indicated in
table 1.
— whether thick or bulky clothing (e.g. protective clothing for extreme temperatures) or tools have to he taken
into account.
— whether machinery will be used by persons wearing thick-soled footwear (e.g. clogs) which will increase the
effective dimension of the foot;
c) select from table 1 the appiopiiate minimum gap relating to the body part at risk (see also aniiex A),
d) if adequate safety cannot be achieved by the minimum gaps selected from table 1. other or additional measures and/or means shall be used (see e.g. ISO1TR 12100-1, ISOITR 12100-2 and ISO 13852).
If the minimum gap for the largc3t expected body part cannot be achievod, tho following example gives one particular means of restricting access to smaller body parts.
EXAMPLE
Access of larger body pdrts to the crushing zone can be pievented uy the use of protective sLructures naving a restricted opening, as indicated in figure 1.
The possibility of access to a crushing zone for a particular part of the body is dependant on the following:
— the gap a between the fixed and moving part or between two moving parts;
— the depth b of the crushing zone:
— the dimensions c of the opening in the protective structure and its distance d from the crushing zone, NOTE — The dimensions for openings in relation to safety distances can be found in ISO 13852.
For rertain applications there may be justifiable reasons to deviate trom the minimum gaps in table 1. Standards dealing with these applications indicate how adeauate safety can be reached.
— where it is foreseeable that the risk from a crushing hazard involves different parts of the body, the minimum gap given in table 1 relating to the largest of these parts shall be applied Isee also d)1.
— the unpredictable behaviour of children and their body dimensions if children are included in the population at risk,
— whether parts of the body could enter the crushing zone in a configuration other than those indicated in table 1.
— whether thick or bulky clothing (eg. protective clothing for extreme temperatures) or tools have to be taken into account.
— whether machinery will be used by persons wearing thick-soled footwear (e.g. clogs) which will increase t[ie effective dimension of the foot;
c select from table 1 the appiopliate minimum gap relating to the body part at risk (see also wiiiex A), d) if adequate safety cannot be achieved by the minimum gaps selected from table 1. other or additional
measures and/or means shall be used (see e.g. ISOIIR 12100-1, SOuR 12100-2 and ISO 13852).
If the minimum gap for the largest expected body part cannot be achieved, tho following example gives one particular means of restricting access to smaller body parts.
EXAMPLE
Access of Larger body parts to the crushing zone can be prevented by the use of protective structures having a restricted opening, as indicated in figure 1.
The possibility of access to a crushing zone for a particular part of the body is dependant on the following:
— the gap a between the fixed and moving part or between two moving parts;
— the depth b of the crushing zone:
— the dimensions c of the opening in the protective structure and its distance d from the crushing zone. NOTE — The dimensions for openings in relation to safety distances can be found in ISO 13952.
For certain applications there may be justifiable reasons to deviate from the minimum gaps in table 1. Standards dealing with these applications indicate how adequate safety can be reached.