1. PURPOSE
This Standard Operating Procedure (SOP) establishes the minimum requirements for the safe setup, operation, and maintenance of electric power drills in workplace and workshop environments. Following this procedure reduces the risk of personal injury, equipment damage, and ensures compliance with applicable occupational health and safety regulations.
2. SCOPE
This SOP applies to all employees, contractors, and students who operate corded or cordless electric power drills. It covers handheld drill/drivers, hammer drills, and combination drill/drivers up to 18 V / 1,500 W rated power.
3. RESPONSIBILITIES
Operator
- Complete this SOP training before first use.
- Inspect the drill and accessories before each use.
- Report defects or incidents to the supervisor immediately.
Supervisor
- Ensure operators are trained and authorised.
- Maintain an up-to-date equipment register and maintenance log.
- Remove defective tools from service and arrange repair/replacement.
4. HAZARDS & RISK SUMMARY
| Hazard | Potential Harm | Controls |
|---|
| Rotating chuck / bit | Laceration, entanglement | Secure workpiece; no loose clothing |
| Flying debris / chips | Eye injury | Safety glasses mandatory |
| Electric shock (corded) | Electrocution | Inspect cord; GFCI outlet |
| Drill bit breakage | Penetrating injury | Correct bit for material; correct speed |
| Noise (hammer mode) | Hearing loss | Hearing protection >30 min use |
| Dust (wood/masonry) | Respiratory illness | N95 mask; dust extraction preferred |
| Awkward posture | Musculoskeletal injury | Use two hands; adjust workpiece height |
| Hidden wiring / pipes | Electrocution, flooding | Check drawings; use cable detector |
5. REQUIRED PERSONAL PROTECTIVE EQUIPMENT (PPE)
| PPE Item | Specification | Mandatory? |
|---|
| Safety Glasses / Goggles | ANSI Z87.1 rated, side shields | YES |
| Hearing Protection | Required for prolonged use (>30 min continuous) | Recommended |
| Work Gloves | Close-fitting; NOT loose or fabric gloves | YES |
| Steel-Toed Footwear | CSA Grade 1 or equivalent | YES |
| Dust Mask / Respirator | N95 minimum when drilling masonry/wood | Situational |
| Secure Clothing | No loose sleeves, ties, or dangling jewellery | YES |
⚠ WARNING: Safety glasses MUST be worn at all times while the drill is in operation. Ordinary prescription glasses do NOT provide adequate protection.
6. PRE-USE INSPECTION
Before each use, perform the following checks. Do NOT operate a drill that fails any item — remove from service and tag with a defect notice.
1
Body & HousingNo cracks, missing parts, or damage to the housing.
2
Power Cord / BatteryCord: no cuts, fraying, or exposed wire. Battery: no swelling, cracks, or leaking.
3
ChuckChuck jaws open and close smoothly; no visible damage.
4
Drill Bit / AttachmentBit is correct type for material, sharp, undamaged, and securely tightened in chuck.
5
On/Off Trigger & LockTrigger operates freely and returns to off position when released.
6
Speed / Clutch SettingsSelector switch moves freely and engages positively into detents.
7
Ventilation SlotsAir slots on housing are clear of debris.
8
GFCI (Corded Only)Plug into a GFCI-protected outlet; test GFCI before use.
7. OPERATING PROCEDURE
Step A — Workpiece Preparation
1
Secure the workpieceClamp or vice-grip the material firmly. Never hold small workpieces by hand while drilling.
2
Mark the drill locationUse a centre punch on metal; mark clearly on wood or masonry.
3
Check for hazardsUse a cable/pipe detector to confirm no hidden utilities before drilling into walls, floors, or ceilings.
4
Select the correct bitMatch bit type (wood, metal, masonry, SDS) to material. Ensure the diameter is correct for the application.
Step B — Drill Setup
1
Insert the bitOpen chuck fully. Insert bit straight and centred. Tighten with the chuck key (keyed chuck) or by hand (keyless). Remove chuck key before applying power.
2
Set mode & speedSelect Drill, Hammer Drill, or Driver mode as required. Select low speed (1) for large bits or hard material; high speed (2) for small bits in soft material.
3
Set clutch torque (driver mode)Adjust clutch collar to appropriate torque setting to prevent overdriving fasteners.
4
Check battery / powerEnsure battery is charged and seated; corded drill is plugged into a GFCI outlet.
Step C — Drilling
1
Don PPEPut on safety glasses, gloves, and any other required PPE before starting.
2
Grip the drillUse both hands — dominant hand on pistol grip, non-dominant hand on auxiliary handle (if fitted).
3
Start the drill off the workSqueeze the trigger and let the bit reach speed before touching the workpiece.
4
Apply steady, even pressureAlign the drill perpendicular (or at the required angle) to the surface. Apply firm, consistent forward pressure — do not force.
5
Reduce pressure near break-throughEase off pressure as the bit approaches full depth to prevent grabbing and loss of control.
6
Clear chips regularlyWithdraw the bit periodically to clear swarf, especially when drilling deep holes in metal.
7
Stop before adjustingRelease the trigger and wait for the bit to stop completely before adjusting grip, changing bits, or setting down the drill.
⚠ WARNING: NEVER leave a running drill unattended. NEVER carry the drill with your finger on the trigger. If the drill jams or stalls, release the trigger immediately — do NOT attempt to force it free while powered.
8. POST-USE PROCEDURE
1
Power downRelease the trigger and ensure the bit has fully stopped.
2
Disconnect powerUnplug corded drill from outlet or remove battery pack before removing the bit.
3
Remove and store the bitRemove bit from chuck, clean it, and store in the proper bit case.
4
Clean the drillWipe housing with a dry or slightly damp cloth. Clear ventilation slots with compressed air if available.
5
Inspect for damageNote any new damage or abnormal performance for logging and reporting.
6
Return to storageStore the drill in its case or designated rack. Charge cordless battery if below 20%.
7
Complete the logRecord the date, hours used, operator name, and any observations in the equipment log.
9. MAINTENANCE SCHEDULE
| Frequency | Task | Performed By |
|---|
| Before each use | Pre-use inspection (Section 6) | Operator |
| Monthly | Clean air vents; inspect chuck for wear; test trigger lock | Operator / Supervisor |
| Every 6 months | Full functional test; inspect brushes (brushed motors) | Qualified Technician |
| Annually | Manufacturer-recommended service; calibration if applicable | Authorised Service Centre |
| As needed | Replace worn or damaged bits; replace worn brushes/carbon | Operator / Technician |
10. EMERGENCY PROCEDURES
In case of injury:
- Release trigger and disconnect power immediately.
- Call for first aid assistance. Dial 911 (or facility emergency number) if required.
- Do not move the injured person unless there is immediate danger.
- Preserve the scene for incident investigation.
In case of electric shock (corded drill):
- Do NOT touch the person if they are still in contact with a live source.
- Disconnect power at the breaker or outlet using a non-conductive object.
- Call 911 immediately. Begin CPR if trained and the person is unresponsive.
In case of fire (battery drill):
- Do NOT use water on a lithium-ion battery fire.
- Use a Class D or CO2 extinguisher. Evacuate area if fire cannot be controlled.
- Call 911. Report incident to supervisor and H&S Representative.
11. TRAINING & AUTHORISATION
No person may operate a power drill in this facility without completing the following:
- Review and sign acknowledgement of this SOP.
- Attend tool orientation session with a qualified supervisor.
- Demonstrate safe operation under direct supervision prior to independent use.
- Renewal training required after any recorded incident or annually, whichever comes first.
12. REFERENCES & RELATED DOCUMENTS
- Manufacturer Operator's Manual (keep on file with equipment register)
- Ontario Occupational Health and Safety Act (OHSA), R.S.O. 1990
- CSA Z432 — Safeguarding of Machinery
- Facility PPE Policy
- Equipment Defect Tag / Out-of-Service Procedure
- Incident Reporting Procedure
13. ACKNOWLEDGEMENT & SIGN-OFF
By signing below, all parties confirm they have read, understood, and agree to comply with this Standard Operating Procedure.
| Role | Printed Name | Signature | Date |
|---|
| Operator | | | |
| Supervisor | | | |
| H&S Representative | | | |