|
| 1 | +# CNC Router |
| 2 | + |
| 3 | +## Body part or clothing caught in the XYZ axes of the machine |
| 4 | + |
| 5 | +### Severity |
| 6 | +H |
| 7 | + |
| 8 | +### Likelihood |
| 9 | +L |
| 10 | + |
| 11 | +### Risk rating |
| 12 | +M |
| 13 | + |
| 14 | +### Who may be harmed & how |
| 15 | + |
| 16 | +User, people nearby -- jammed body parts or clothing can lead to crush or pinch injuries. |
| 17 | + |
| 18 | +### Control measures |
| 19 | + |
| 20 | +- Signage -- indication of dangerous parts of the machine. |
| 21 | +- Training -- instructions to remove or secure loose clothing and long hair, and to avoid getting too close to the moving parts of the machine. |
| 22 | +- Equipment -- accessible emergency stop button. |
| 23 | + |
| 24 | +## Body part or clothing getting caught on the spindle |
| 25 | + |
| 26 | +### Severity |
| 27 | +H |
| 28 | + |
| 29 | +### Likelihood |
| 30 | +L |
| 31 | + |
| 32 | +### Risk rating |
| 33 | +M |
| 34 | + |
| 35 | +### Who may be harmed & how |
| 36 | + |
| 37 | +User -- may get pulled into the machine, the sleeves and gloves can get pulled and entangled, can cause crush, pinch injuries, cuts, abrasion, peeling of the skin. |
| 38 | + |
| 39 | +### Control measures |
| 40 | + |
| 41 | +- Signage -- indication of dangerous parts of the machine. |
| 42 | +- Training -- instructions to remove or secure loose clothing and long hair, and to avoid getting too close to the moving parts of the machine. |
| 43 | +- Equipment -- accessible emergency stop button, protective shield around the spindle. |
| 44 | + |
| 45 | +## Tool breaking |
| 46 | + |
| 47 | +### Severity |
| 48 | +M |
| 49 | + |
| 50 | +### Likelihood |
| 51 | +M |
| 52 | + |
| 53 | +### Risk rating |
| 54 | +M |
| 55 | + |
| 56 | +### Who may be harmed & how |
| 57 | + |
| 58 | +User or a bystander -- may be hit by the shards of the tool that can damage the skin or the eyes. |
| 59 | + |
| 60 | +### Control measures |
| 61 | + |
| 62 | +- Training -- instructions to verify correctness of the feed, spindle RPM, tool path and machine configuration, wearing PPE. |
| 63 | +- Equipment -- protective shield around the spindle, PPE. |
| 64 | + |
| 65 | +## Tool or workpiece overheating |
| 66 | + |
| 67 | +### Severity |
| 68 | +M |
| 69 | + |
| 70 | +### Likelihood |
| 71 | +M |
| 72 | + |
| 73 | +### Risk rating |
| 74 | +M |
| 75 | + |
| 76 | +### Who may be harmed & how |
| 77 | + |
| 78 | +User -- can get burned by touching hot objects. |
| 79 | +The space -- workpiece may catch fire. |
| 80 | + |
| 81 | +### Control measures |
| 82 | + |
| 83 | +- Training -- verify correctness of the feed and spindle RPM, do not let the machine run unattended, check if things are hot before touching them. |
| 84 | + |
| 85 | +## Ignition of chips/dust |
| 86 | + |
| 87 | +### Severity |
| 88 | +H |
| 89 | + |
| 90 | +### Likelihood |
| 91 | +L |
| 92 | + |
| 93 | +### Risk rating |
| 94 | +M |
| 95 | + |
| 96 | +### Who may be harmed & how |
| 97 | + |
| 98 | +Everybody in the room and/or the space, the machine, the space itself -- in case a fire breaks out. |
| 99 | + |
| 100 | +### Control measures |
| 101 | + |
| 102 | +- Training -- take chip evacuation into account when configuring the feeds, spindle RPM and tool paths, use the dust extractor, clean the dust extractor fan and tray. |
| 103 | +- Equipment -- protective cover for the spindle aids in dust extraction, working fire alarm in the room. |
| 104 | + |
| 105 | +## Hearing damage |
| 106 | + |
| 107 | +### Severity |
| 108 | +M |
| 109 | + |
| 110 | +### Likelihood |
| 111 | +M |
| 112 | + |
| 113 | +### Risk rating |
| 114 | +M |
| 115 | + |
| 116 | +### Who may be harmed & how |
| 117 | + |
| 118 | +Everybody in the room -- prolonged exposure to the noises caused by the machine can cause hearing damage. |
| 119 | + |
| 120 | +### Control measures |
| 121 | + |
| 122 | +- Training -- wearing PPE, taking breaks, telling other people in the room to wear PPE. |
| 123 | + |
| 124 | +## User fatigue |
| 125 | + |
| 126 | +### Severity |
| 127 | +M |
| 128 | + |
| 129 | +### Likelihood |
| 130 | +M |
| 131 | + |
| 132 | +### Risk rating |
| 133 | +M |
| 134 | + |
| 135 | +### Who may be harmed & how |
| 136 | + |
| 137 | +User, the machine, other people in the room -- fatigue makes other mistakes more likely to happen. |
| 138 | + |
| 139 | +### Control measures |
| 140 | + |
| 141 | +- Training -- taking and planning breaks when running long jobs. |
| 142 | + |
| 143 | +## Objects interfering with the XYZ axes of the machine |
| 144 | + |
| 145 | +### Severity |
| 146 | +L |
| 147 | + |
| 148 | +### Likelihood |
| 149 | +L |
| 150 | + |
| 151 | +### Risk rating |
| 152 | +L |
| 153 | + |
| 154 | +### Who may be harmed & how |
| 155 | + |
| 156 | +The machine may get damaged. |
| 157 | +User, bystander -- trapped objects may become airborne. |
| 158 | +Improper attempts to resolve the problem can lead to body parts or clothes getting trapped. |
| 159 | + |
| 160 | +### Control measures |
| 161 | + |
| 162 | +- Training -- make sure the work area is clear from obstacles. |
| 163 | +- Equipment -- accessible emergency stop button. |
| 164 | + |
| 165 | +## Machine or tool crashing into workpiece |
| 166 | + |
| 167 | +### Severity |
| 168 | +L |
| 169 | + |
| 170 | +### Likelihood |
| 171 | +M |
| 172 | + |
| 173 | +### Risk rating |
| 174 | +L |
| 175 | + |
| 176 | +### Who may be harmed & how |
| 177 | + |
| 178 | +User -- may be hit by an object sent flying. |
| 179 | +The object may get stuck on the spindle and start spinning and shaking violently. |
| 180 | + |
| 181 | +The machine may get damaged. |
| 182 | +Can lead to other issues such as the tool or workpiece overheating. |
| 183 | + |
| 184 | +### Control measures |
| 185 | + |
| 186 | +- Training -- verify correctness of the feed and spindle RPM, do not let the machine run unattended, secure the workpiece appropriately. |
| 187 | +- Equipment -- accessible emergency stop button. |
| 188 | + |
| 189 | +## Injury due to airborne particles |
| 190 | + |
| 191 | +### Severity |
| 192 | +M |
| 193 | + |
| 194 | +### Likelihood |
| 195 | +L |
| 196 | + |
| 197 | +### Risk rating |
| 198 | +L |
| 199 | + |
| 200 | +### Who may be harmed & how |
| 201 | + |
| 202 | +Everybody in the room -- inhaling harmful particles. |
| 203 | + |
| 204 | +### Control measures |
| 205 | + |
| 206 | +- Training -- wearing PPE, telling other people in the room to wear PPE, using dust extraction, avoiding using materials that generate especially bad particles (e.g. carbon fiber). |
| 207 | +- Equipment -- PPE, dust extractor. |
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