Merge pull request #120 from edinburghhacklab/tool/angle_grinder

add angle grinder docs

Author: iykdw

syllabuses/Workshop/Angle Grinder/risk-assessment.md

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+# Angle Grinder
+
+## Injuries due to contact with spinning disc
+
+### Severity
+
+H
+
+### Likelihood
+
+M
+
+### Risk rating
+
+M
+
+### Who may be harmed & how
+
+- User - may sustain deep cuts or amputations from contact with moving disc
+- Bystander – may be injured if user loses control of tool
+
+### Control measures
+
+- Signage – blade hazard and PPE signage present
+- Training – users trained in proper control and safe use; safety enforced via access control
+- Equipment – disc guard, side handle, gloves, first aid kit
+
+## Injuries due to disc shatter or kickback
+
+### Severity
+
+H
+
+### Likelihood
+
+M
+
+### Risk rating
+
+M
+
+### Who may be harmed & how
+
+- User – injured by fragments or loss of control
+- Bystander – may be struck by disc fragments or tool
+
+### Control measures
+
+- Signage – warning signs about correct discs and PPE
+- Training – users instructed on correct mounting and disc inspection
+- Equipment – only compatible discs used, with intact guard and rated RPM; eye and face protection required
+
+## Burns or fire from sparks or hot materials
+
+### Severity
+
+M
+
+### Likelihood
+
+M
+
+### Risk rating
+
+M
+
+### Who may be harmed & how
+
+- User – burns from hot surfaces or sparks
+- Others – fire risk from flammable materials nearby
+
+### Control measures
+
+- Signage – hot surface and fire hazard signage
+- Training – users warned about heat buildup and spark path
+- Equipment – fire extinguisher nearby, flammables cleared from area
+
+## Hearing damage
+
+### Severity
+
+M
+
+### Likelihood
+
+L
+
+### Risk rating
+
+L
+
+### Who may be harmed & how
+
+- User – may experience hearing loss from prolonged exposure
+- Bystanders – may be affected by continuous use in shared space
+
+### Control measures
+
+- Signage – noise hazard posted
+- Training – users instructed to wear hearing protection
+- Equipment – ear defenders or plugs provided
+
+## Respiratory injury from dust and particles
+
+### Severity
+
+M
+
+### Likelihood
+
+L
+
+### Risk rating
+
+L
+
+### Who may be harmed & how
+
+- Users and others – may inhale fine dust or abrasive particles
+
+### Control measures
+
+- Signage – PPE and dust hazard signage present
+- Training – users taught which materials produce hazardous dust (e.g., stone, concrete, metals)
+- Equipment – Masks and eye protection recommended, eye wash kit available
+
+## Entanglement or snagging in rotating parts
+
+### Severity
+
+M
+
+### Likelihood
+
+L
+
+### Risk rating
+
+L
+
+### Who may be harmed & how
+
+- User – may sustain pulling or tearing injuries if clothing, gloves, or hair are caught
+
+### Control measures
+
+- Signage – entanglement warnings posted
+- Training – users instructed to remove jewellery, tie back hair, wear tight-fitting PPE
+- Equipment – first aid kit available, use of side handle required

syllabuses/Workshop/Angle Grinder/syllabus.md

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+# Angle Grinder
+
+## Safety
+
+### PPE
+
+* Safety glasses required
+* Hearing protection required
+* Mask/respirator recommended
+
+### Entanglement risks
+
+* No loose clothing or cables
+* Long hair must be tied back
+* No jewellery/watches
+
+### Kickback and disc hazards
+
+* Use both hands to maintain control
+* Never use damaged or unlabelled discs
+* Let grinder reach full speed before contacting material
+* Avoid twisting or binding the disc in the cut
+* Ensure material is clamped or secured to avoid movement
+* Always use the correct disc for the material
+* Ensure side handle is fitted and used for control
+
+### Flying sparks and debris
+
+* Do not use near flammable materials
+* Sparks may ignite dust
+* Ensure bystanders are clear and wearing eye protection
+* Be aware of hot workpiece and surrounding area after grinding
+
+## Startup checks
+
+### Surrounding area cleared of obstacles and flammables
+
+### Other workshop users alerted and using appropriate PPE
+
+### Angle grinder inspection
+
+* Ensure battery is charged and securely fitted
+* Check disc is appropriate, undamaged, and firmly secured
+* Ensure disc guard is in place and correctly adjusted for the job
+* Ensure side handle is installed and tight
+* Tool is powered off before inserting battery
+* Disc spins freely by hand before starting
+* Check for visible damage or wear to body, battery, or switch
+
+### Workpiece setup
+
+* Free of oils, greases, or flammable residues
+* Securely clamped or held in a vice
+* Ensure cutting/grinding path is clear and won’t strike clamps, benches, etc.
+
+## Usage
+
+### Starting the machine
+
+* Insert battery with tool switched off
+* Hold firmly with both hands
+* Engage safety lock and trigger
+* Allow disc to spin up fully before contacting workpiece
+
+### Stopping the machine
+
+* Release the trigger
+* Wait until disc has come to a complete stop before setting down
+* Remove battery before changing disc, adjusting guard, or inspecting
+
+### Cutting or grinding
+
+* Use correct disc for application (cutting, grinding, flap sanding, wire wheel, etc)
+* Maintain a firm grip with both hands
+* Use a shallow approach and avoid forcing the tool
+* Let the grinder do the workload
+* Maintain the correct angle (e.g. ~15-30° for grinding)
+* Never grind with the side of a cutting disc
+* Avoid sudden contact
+* Do not use worn-down discs intended for larger grinders
+
+### General
+
+* Never use without disc guard
+* Never use wet or in the rain
+* Never carry by the battery or with finger on the trigger
+* Ensure disc is suited for the tool
+* Use in well ventilated areas
+
+## Intended Use
+
+* Designed for cutting, grinding, sanding, or brushing of:
+  - Steel
+  - Non-ferrous metals
+  - Stone, concrete, brick (with proper disc)
+  - Plastics (with appropriate care)
+* Not intended for:
+  - Wood (except specialty discs with full PPE)
+  - Glass
+
+## Post Usage
+
+* Power off and remove battery
+* Allow disc to cool before changing or storing
+* Clean up debris and dust
+* Return tool to charging station or storage
+* Dispose of used discs properly
+* Do not leave grinder unattended with battery inserted
+
+## Maintenance
+
+### General
+
+* If the grinder becomes excessively hot, sparks unusually, or makes unusual noise, stop immediately and report
+* Clean tool after use with brush or air
+* Do not submerge in liquids
+* Report worn or damaged discs or guards
+* Do not attempt internal repairs