| Hazard Elimination | | | | catalyst dust and hazardous chemical vapor from |
| Hazard elimination is the process of removing | | | | a building is an example of hazard control by |
| hazards completely from workplaces. The hazards | | | | ventilation, where at the same adds fresh air into |
| are not present anymore, that's why hazard | | | | that building. Another example of ventilation is |
| elimination is the most effective method in | | | | fume hood inside laboratory room. |
| controlling hazard. Whenever possible use this | | | | In case of containment, hazards are enclosed by |
| method to control hazards. An example of hazard | | | | using enclosed cabs, enclosing noisy equipment, |
| elimination is to design a low-temperature and | | | | providing a noise-insulated work booth and |
| pressure reaction conditions instead of the | | | | installation of silencer at the discharge pipe of a |
| high-temperature and pressure condition. High | | | | compressor. Process control is the most common |
| temperature hazard is completely removed and | | | | hazard control method in chemical plant operation, |
| over-pressure condition will no longer exist. | | | | such as isolation by interlock and safety valve to |
| Another example of this is using automatic mode | | | | prevent over pressure. |
| operation rather than manual operation. So that | | | | Administrative control |
| hazards that are associated with manual operation | | | | Administrative control is selected when elimination |
| removed to zero level. Elimination of hazards is | | | | and substitution is not feasible, and engineering |
| usually performed at the design or preparation | | | | control could not provide adequate control on |
| phase and implemented at the source of hazards. | | | | hazards. Typical examples of administrative |
| | | | controls are provisions of operation procedures, |
| Hazard reduction is the effort to reduce or lessen | | | | safety signs, safety talks, setting up new safety |
| hazard level from the workplaces to an | | | | policies, scheduling working hour to limit exposure |
| acceptable level. In this case hazards are still | | | | to the hazard, implementing job rotation, work |
| present. It is generally chosen whenever hazard | | | | permits, alarms and training. |
| elimination is not feasible. Hazard reduction is | | | | Personal Protective Equipment |
| implemented during the design phase and in some | | | | Personal protective equipment provides a barrier |
| cases as a result of evaluation on the existing | | | | between workers and the chemical, material, hot |
| equipments, jobs, tasks or activities. An example | | | | surface or noise. As I mentioned in my previous |
| of this is to substitute a hazardous chemical with | | | | post about personal protective equipment video, it |
| a less hazardous chemical. | | | | includes respirators, goggles, hand gloves, face |
| Engineering control | | | | shields, hard hat, ear plug and footwear. Personal |
| Including in engineering control are isolation, | | | | protective equipment shall be used when hazard |
| ventilation, containment and process control. | | | | elimination, reduction and engineering control are |
| Engineering control deals with the design of | | | | not feasible, and the administrative control could |
| workplaces and their related processes. Isolation | | | | not provide sufficient additional safety protection. |
| of the hazards may come in the form of machine | | | | The above hazard control methods can be applied |
| guard, blast shield, welding curtains and hot | | | | in combination in order to provide the most |
| surface insulation. Exhaust fan that removes | | | | effective hazard control. |