CASE STUDY 2 - ⏩HAZARD IDENTIFICATION,RISK ASSESSMENT AND RISK CONTROL⏪

CASE STUDY 2

         ⏩HAZARD IDENTIFICATION,RISK ASSESSMENT AND RISK CONTROL⏪
   
                                                                    QUESTION 1 : 
 

  

         Monday,March 11,2002,seemed to be a typical spring day at New Berlin West High School In New Berlin,Wisconsin,until something horrible unexpected occurred during a chemistry demonstration in the school auditorium.A chemistry teacher was igniting chloride and methyl alcohol mixtures to show the variety of chloride emissions  when a sudden brust of flames shot into the audience of students.

1.TYPE OF HAZARD : CHEMICAL HAZARDS.

                                         

Chemical hazards are present when a students is exposed to any chemical preparation in the workplace in any form(solid,liquid or gas).Some are safer than others,but to some student  who are more sensitive to chemical ,even common solution can cause illness,skin irritation or breathing problems.

BEWARE OF : 

* Liquids like cleaning products,paints,acid,solvents(ESPECIALLY if chemicals are in an unlabeled container.

* Vapors and fumes that come from welding or exposure to solvents.

* Gases like acetylene,propane,carbon monoxide and helium.

2.PREVENTS THE INCIDENT.

 *Students should wear safety spectacles when doing experiments.

 *Students should follow relevant experimental procedures closely when doing experiments(when         only gently heating is required do not apply strong heating).

 *During experiments,students should execute these techniques properly(shaking a test tube of             chemical liquids properly on heating,smelling gases evolved from a test tube by means of waving   the gases towards the nose,but not directly above the test tube).

 *Teachers should ensure that students are aware of the relevant experimental technique before doing     experiment.

3. PERSONAL PROTECTIVE EQUIPMENT

1.  Face Shield
2.  Dust/ Mist Respirator
3.  Half Face Respirator 
4.  First Aid Kit
5.  Eye Mash
6.  Ear Muff
7.  Rubber Glovers
8.  Cotten Glovers
9.  Fire Extinguishes
10.  Fire Blanket
11.  Coat and Lap Apron
12.  Eye protection device
13.  Respirator and Smoke Chamber

Video 2-1, Experiment 2: Physical and Chemical Properties of Liquid Comp...

QUESTION 2 - HAZARDOUS NOISE AT WORK

QUESTION 2 .

Loud noise at work can damage hearing. Approximately 22 million U.S. worker are exposed to hazardous noise at work. To minimize occupational noise-induced hearing loss, the National Institute of Occupational Safety and Health (NIOSH) recommends that workers should not be exposed to noise at a level amounts to more than 85 decibels (dBA) for 8 hours.

1.TYPE OF HAZARD : PHYSICAL HAZARDS.

1. Physiological disorders - Disturbances can be elevated blood pressure, pulse can cause pale and sesory disturbances.
2. Psychological disorders - In the form of discomfort, lack of concentrantion and emotion.
3. Communication disorders - Can cause disruption of work even to the accident because it cannot hear a signal or a danger sign.
4. Hearing to discorders - is the most serious disorder because its effect can cause  reduced hearing fanction.

2.Physical Hazards include :

1. Using the device should be like an the workplace hearing aid.
2. The use of ear plugs and earplugs can reduce roise exposure.
3. Converting machines at work to slow sound.
4. Change the workers work schedule to avoid  excessive noise.
5. Removal of resources or even more silent replacement equipment.
6. Radiation:including ionizing,non-ionizing.
7. High exposure to sunlight / ultraviolet rays
8. Temperature extremes - hot and cold.
9. Constant loud noise.

Hearing Conservation (Safety Video) - H291