CNC Router risk assesment

syllabuses/Workshop/CNC Router/risk-assessment.md

@@ -0,0 +1,212 @@
+# CNC Router
+
+## Body part or clothing caught in the XYZ axes of the machine
+
+### Severity
+H
+
+### Likelihood
+L
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+User, people nearby -- jammed body parts or clothing can lead to crush or pinch injuries.
+
+### Control measures
+
+- Signage -- indication of dangerous parts of the machine.
+- Training -- instructions to remove or secure loose clothing and long hair, and to avoid getting too close to the moving parts of the machine.
+- Equipment -- accessible emergency stop button.
+
+## Body part or clothing getting caught on the spindle
+
+### Severity
+H
+
+### Likelihood
+L
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+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.
+
+### Control measures
+
+- Signage -- indication of dangerous parts of the machine.
+- Training -- instructions to remove or secure loose clothing and long hair, and to avoid getting too close to the moving parts of the machine.
+- Equipment -- accessible emergency stop button, protective shield around the spindle.
+
+## Tool breaking
+
+### Severity
+M
+
+### Likelihood
+M
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+User or a bystander --  may be hit by the shards of the tool that can damage the skin or the eyes.
+
+### Control measures
+
+- Training -- instructions to verify correctness of the feed, spindle RPM, tool path and machine configuration, wearing PPE.
+- Equipment -- protective shield around the spindle, PPE.
+
+## Tool or workpiece overheating
+
+### Severity
+M
+
+### Likelihood
+M
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+User -- can get burned by touching hot objects.
+The space -- workpiece may catch fire.
+
+### Control measures
+
+- Training -- verify correctness of the feed and spindle RPM, do not let the machine run unattended, check if things are hot before touching them.
+
+## Ignition of chips/dust
+
+### Severity
+H
+
+### Likelihood
+L
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+Everybody in the room and/or the space, the space itself -- in case a fire breaks out.
+
+The machine may get damaged, which could make it less safe for other users.
+
+### Control measures
+
+- 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.
+- Equipment -- protective cover for the spindle aids in dust extraction, working fire alarm in the room.
+
+## Hearing damage
+
+### Severity
+M
+
+### Likelihood
+M
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+Everybody in the room -- prolonged exposure to the noises caused by the machine can cause hearing damage.
+
+### Control measures
+
+- Training -- wearing PPE, taking breaks, telling other people in the room to wear PPE.
+
+## User fatigue
+
+### Severity
+M
+
+### Likelihood
+M
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+User, other people in the room -- fatigue makes other mistakes more likely to happen.
+
+The machine may get damaged, which could make it less safe for other users.
+
+### Control measures
+
+- Training -- taking and planning breaks when running long jobs.
+
+## Objects interfering with the XYZ axes of the machine
+
+### Severity
+L
+
+### Likelihood
+L
+
+### Risk rating
+L
+
+### Who may be harmed & how
+
+User, bystander -- trapped objects may become airborne.
+Improper attempts to resolve the problem can lead to body parts or clothes getting trapped.
+
+The machine may get damaged, which could make it less safe for other users.
+
+### Control measures
+
+- Training -- make sure the work area is clear from obstacles.
+- Equipment -- accessible emergency stop button.
+
+## Machine or tool crashing into workpiece
+
+### Severity
+L
+
+### Likelihood
+M
+
+### Risk rating
+M
+
+### Who may be harmed & how
+
+User and bystander -- may be hit by an object sent flying.
+The object may get stuck on the spindle and start spinning and shaking violently.
+
+The machine may get damaged, which could make it less safe for other users.
+Can lead to other issues such as the tool or workpiece overheating.
+
+### Control measures
+
+- Training -- verify correctness of the feed and spindle RPM, do not let the machine run unattended, secure the workpiece appropriately.
+- Equipment -- accessible emergency stop button.
+
+## Injury due to airborne particles
+
+### Severity
+M
+
+### Likelihood
+L
+
+### Risk rating
+L
+
+### Who may be harmed & how
+
+Everybody in the room -- inhaling harmful particles.
+
+### Control measures
+
+- 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).
+- Equipment -- PPE, dust extractor.