My Tiger model of the Hierarchy of Controls

2. By Marlowe M. Chica
THE HIERARCHY OF CONTROLS

3. When determining controls, or considering
changes to existing controls, consideration shall
be given to reducing the risks according to the
following hierarchy:
OHSAS 18001:2007

4. Removal of a machine/equipment or a process or part of a process to
eliminate the hazard
e.g. Outsourcing of a process to a third party company/supplier/service
provider
ELIMINATION

5. SUBSTITUTION
Substitute a less hazardous material or reduce the system energy
e.g. lower the force, amperage, pressure, temperature, etc.
e.g. use of water based paint instead of solvent-based
e.g. Mercury free medical instruments

6. ENGINEERING CONTROLS
Enclosure or barriers to isolate source of hazard from workers
e.g. ventilation systems, machine guarding, fume hoods, sound enclosures

7. ADMINISTRATIVE CONTROLS
Changes/modifications in the work
process / SOP’s
Safety Signs, Safe Work Permits, Job
Rotations, Rest Periods, Safety
Procedures

8. PERSONAL PROTECTIVE
EQUIPMENT
Specialized clothing or equipment worn by employees for protection against health
and safety hazards
e.g. ear plugs, face masks, respirator masks, goggles, safety shoes, hard hats