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LOCATION / PREPARED BY: / APPROVED BY: / DOCUMENT CONTROL
All divisionalworksites where abrasive wheel grinder equipment is present and in use.
/ Prepared By:
Carolyn Richert
Leonard Zdrill / Worksite principal
Site safety team
Supervisors and instructors
Safety and health office / Origin:September 14, 2006
Last Revised: March 11, 2015
Last Reviewed:March 11, 2015
Next Review:On or before March 11, 2018
PERSONAL PROTECTION EQUIPMENT (PPE)
/ Safety glasses or face shield must be worn at all times in work areas and specifically when operating aabrasive wheel grinder. / / Long and loose hair must be tied back.
/ Appropriate footwear must be worn when preforming work with abrasive wheel grinders. Shoe must be fully enclosed. No open toed shoes allowed. / / Close fitting/protective clothing must be worn. Remove strings hanging from pullovers/sweaters.
/ Rings and jewelry (long necklaces / bracelets, etc.) must not be worn. Lighters, matches and cell phones are not allowed in the shop area when the shop is operational. Wearing gloves is not allowed when using an abrasive wheel grinder. / / Hearing protection must be worn as per shop location protocols and when using this machine constantly for an extended period of time. Hearing protection is always recommended when using abrasive wheel grinding equipment.
Other PPE Considerations / Dust masks may be required depending on material being worked on and potential worker sensitivities.
HAZARDS PRESENT / SUPPORTING
REQUIREMENTS
- Discharge of objects or materials from grinding process
- Potential break up grinding wheel causing materials to fly and hit people
- Grinding wheel binding causing kickback or violent movement of the grinder or work piece
- Serious cutpotential to hands or other body parts from grinder wheel
- Amputation potential if body part pinches between wheel and tool / material rest plate
- Eye injury potential from discharged objects or materials from grinding process
- Respiratory risks when material being cut become airborne (sensitivities)
- Noise exposure from prolonged period of equipment use or workspace environment.
- Metal friction heating at point of operation (wheel and material potentially)
- Other, not yet identified based on experience.
- General shops and department safety orientations
- Read and understand general safety rules and regulations
- Applicable other grinding process safe work procedures
- Safety related contents of abrasive wheel grinder Operator Manual
- Other instruction and supervision
- Other, not yet identified based on experience
SAFE WORK PROCEDURE
DO NOT use this machine or perform this process unless a supervisor / teacher instructed you in safe procedures / operation and have given you authorization to perform associated tasks.
Always use tools and equipment for their intended purposes only.
Always take out of service and report damaged equipment to your supervisor / teacher without delay.
Pre-Job Safety:
1)Inspect workspace, Inspect grinder and electrical cord, check for frays or cracks in cord, and damage to plug end. Inspect grinder, ensure grinder is guarded properly. Inspect grinding wheel looking for cracks or chips in wheel. If any damage is found do not use grinder notify instructor.
2)Inspect workspace and walkways to workspace ensure there are no slip/trip hazards present. Clean area and clear away any debris before starting to grinder. Ensure that flammable materials/solvents are not in area around pedestal grinder.
3)Refer to MSDS for material being ground because an approved cartridge air respirator may be required.
4)Use local exhaust ventilation and or recommended respirator when grinding work-piece/material
Set Up:
5)Select, inspect and test grinding wheel; Visually inspect and conduct "ring test" before installing new grinding wheel. Examine the grinding wheel for cracks or chips and discard faulty wheel. Never mount a wheel without the blotter on each side.
6)Ensure grinding wheel RPM rating is compatible with pedestal grinder before installation.
7)Install or replace grinding wheel; Use correct tool/s and ensure that pedestal grinder is disconnected from power source and the stop button has been pushed. Use correct/approved shaft spacers/bushing.
8)Do not over tighten mounting nut, as all abrasive wheels are fragile so handle grinding wheel with care.
9)Dress grinding wheel; Use correct dressing tool for specific grinding wheel. Bring dressing tool into contact with the grinding wheel slowly and smoothly. Apply gradual pressure and move the dressing tool back and forth across the face of the wheel. Dressing tool should not be in contact with grinding wheel during pedestal grinder start up. Stand to one side of pedestal grinder until operating speed is reached. Use work rest to support dressing tool and do not apply excessive pressure against grinding wheel.
10)Adjust tool rest; Work rest spacing should be calibrated to less than 1/8th (0.125 inches) from face of grinding wheel and slightly below its center. Use correct tool for adjusting work rest. Do not adjust work rest during pedestal grinder operation or with power on.
11)Ensure safety guard is in place and aligned properly, if the guard is not aligned properly, do no use grinder notify instructor.
12)Transport work piece/material to pedestal grinder. Remember lifting techniques, get assistance from co-worker/s for large, awkward or heavy materials to be lifted or carried.
13)Don all required personal protective equipment.
Operate / Perform Process:
14)Check the surface of the grinding wheel and flanges to ensure that no particles are present. Stand at a safe distance and not directly in front of pedestal grinder when machine is starting up.
15)Plug pedestal grinder into power source and push the on button, Work piece should not be in contact with grinding wheel during pedestal grinder startup. Allow grinder to come up to full speed before applying work piece/material.
16)Grinder should be secure and steady before starting to grind work piece.
17)Ease work-piece into grinding wheel surface. Do not exert excessive pressure on work-piece into grinding wheel. Grind work-piece on "edge face" of grinding wheel and not on the "side face". Only grind material/work-piece that is specific for the selected grinding wheel. Move the work-piece back and forth across the face of the wheel.
18)Keep hands and fingers at a safe distance from grinding wheel surface.
19)Do not leave pedestal grinder running unattended. Push machine stop button after each use.
20)Quench "hot end" of material in coolant tray and avoid handling work-piece by machined end.
21)Push machine stop button and wait for grinding wheel to stop, before removing debris. Use a stick or brush to remove debris.
Post Job Procedure:
22)Clean up any debris with a broom and dust pan.
23)Clean off saw and put back in storage area. If saw or saw or blade is damaged, give to the instructor to lock out.
24)Report any hazardous situations to your supervisor / instructor immediately.
Lockout:
1)Unplug grinder from power source.
2)Apply lockout device to plug end of grinder
3)Apply lock and tag to the plug end lockout device as per established lockout procedure.
REGULATORY REQUIREMENTS
•Workplace Safety and Health Act W210, Sections 4, 5, 7
•Manitoba Regulations 217/2006, Part 02, Section 2.1 Safe Work Procedures
•Operators Manual
•CSA Standards