8/10/2019 TUTORIAL 1 Accident Statistic Answer (1) http://slidepdf.com/reader/full/tutorial-1-accident-statistic-answer-1 1/17 INDUSTRIAL SAFETY AND HEALTH CKB 30103 TUTORIAL 1 1. The following data is accident statistic of a company. a. Identify the type of incident name (or consequences); according to OSHA and NADOPOD regulation 2005) for the following data. b. Identify type of hazard(s) in each incident. c. Calculate the OSHA Incident Rate, Fatal Accident Rate, Lost Time Case and Days Away and Restricted Transfer (DART)from this accident statistics. OSHA Incident Rate Number occupational injuries & Illness x 200,000 Total hours work by all employees during period covered Assume the company has 100 worker or use info below. i.e the company has 150 employee. No of injuries & illness = 7 OSHA IR = 7 x 200, 000 = 7. 100 x 50 x 40 Fatal Accident Rate
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Total hours work by all employees during period covered
[480+48000+48000+240+48000+320] x 200000 /200000 = 145040
d. Calculate the Fatality rate if total number of employee is 150.
[also known as Number of fatalities expected per person per year]
Number of fatalities per year = 2/150 =0.0133
Total no. of people (per year) in applicable population
Date of
Incident Preliminary Description of Incident
11/1/2010 Worker was conducting repairs on a milling machine, which was not locked out. The machine started,
crushing the worker leg and caused the bone broke. He was away from work 2 months.NADOPOD :Serious bodily injury- fracture or dislocation of the bone
OSHA: Occupational injury
Lost Work Days:60 days
Number of Lost Time due to injury:
{Lost time injury (in hours according to NADOPOD; 1 day = 8 hours;
1 death=6000 lost work days)}
Hence: Loss Time Injury = 8hrs x 60days = 480hrs
Hazard: Mechanical hazard[crushing]12/2/2010 Four workers injured while jack hammering a septic tank when propane fumes in the tank exploded.Two employees were from ARCG department, and two worked for DHI Department.
3/12/2010 10 workers were hospitalized for 4 days after consuming meal provided by the companycaterer due to stomach upset.
NADOPOD :
OSHA: Occupational illness
Lost work days= 40 days, [10 worker x 4 days]
Number of Lost Time due to injury:
{Lost time injury (in hours according to NADOPOD; 1 day = 8 hours;
1 death=6000 lost work days)}
Hence: Loss Time Injury = 8hrs x 40days = 320hrs
Hazard: biohazard (microoraganism infection)
2. State the definition of the following terms:-a. Hazardb. Riskc. Accident
3. Laila, who work as receptionist cum telephone operator has been informed thatshe is exposed to ergonomic hazard. Due to her ignorant, she consulted you, assafety and health officer, about ergonomic hazards. Explain in full detail ofergonomic hazards and its consequences.
4. The following is the details of safety performance from various industries in year2011.
a. If total number of workers in manufacturing is 200. Determine FR.
Calculate the probabilities of the top event if given the component failure rate as shownin the table below.
Component Failure rate
Motor 0.05 / year
Battery 0.10 / year
Connectors 0.5 / year
Switch 0.10 / year
Human error 0.02 / year
9. The chemical reaction involves 2 liquids, A & B, which flow from their respectivestorage tanks into the stirred product C reactor. The flow rate of materials A & Bis regulated by control valves A & B,respectively.The liquid phase chemicalreaction that results is highly exothermic & generates considerable quantities of
heat, which must be controlled by cooling water on the jacket of product Creactor.The reaction of materials A & B to produce product C proceeds rapidly&product C is drawn off from the bottom of the reactor.Product C flows throughvalve C into the product C storage vessel to await shipment. The reactor & eachof the storage tanks have pressure-operated relief valves in case of pressurebuild-up during the process operation.Temperature, pressure and level indicatorare provided in the product C reactor for use in controlling process chemistry.Carry out HAZOP study using appropriate OSHA guide words for the process