DISCUSSION HIRARC is stand for Hazard Identification Risk Analysis and Risk Control. The purpose of this activity looks significant in effort to prevent accident happen or reduce risk to hazardous activity in organisation or at workplace. Process of HIRARC requires four simple steps which are classify work activities, identify hazard, conduct risk assesment(analysed and estimate risk from each hazard) by calculating or estimating likelihood and severity of hazard. In this mini project, two workplace were chosen to be identified of HIRARC where, Computer Lab 29 B and Graphic Lab 30 B. For this two workplaces, there were no previous HIRARC document to review for this mini project. Therefore, this group was assigned to develope new HIRARC document. The important of HIRARC document as the practice of planning, management and the operation of activity as a basic of risk management. Risk was calculated by multiplying of likelihood and severity. Likelihood can be referred at Table A, whereas severity was referred from table B. Then risk matrix was referred from Table C and also able to determine the description prioritize risk whether high, medium or low. All of these tables are from HIRARC guideline and only major risk could be discussed in this mini project. At Computer Lab 29 B, there were three activities involved in order to identify the hazard which using equipment for tutorial and lecture purpose, walk in and out from computer laboratory, and cleaning the computer laboratory. One hazard is being identified , analyse and assess its associated risk and then suitable control measures is implement in HIRARC. So, in Computer Lab 29 B, the major risk was 20 at activity walk in and out from computer laboratory. In sub activitity of walking around computer laboratory, there were two types of hazard were identified such mechanical and physical hazard. wall crack was classified as mechanical hazard, indicate a problem regarding the foundation underneath the wall (M.Miley, 2010). So the control measure that have been suggested were replaster the wall crack and keep maintenance to overcome the hazard in the future by get consult with building inpsector or contractor as soon as any of the crack appear. Besides, physical risk that consist risl level of 20 was moveable ceiling. If there was no further action being measured, this may cause injury to the person body and head if the ceiling suddenly falling down.
Moveable ceiling is cause by rooftruss uplift that occurs when the bottom chord of the truss is exposed to significantly different moisture or temperature consitions than the rest of the roof truss (M.R.Ferguson,2014). The control measure that was identified for this hazard, fix the ceiling while maintaning progress by consult with experts person for more valid action to be taken. Another high risk level in this workplace was 16, in activity using equipment for tutorial and lecture purpose. The sub-activity was switch on the power supply and the electrical hazard identified were overload voltage,damaged socket and plugs, then improper installation of electrical device. Each year about 1000 accidents work involve electric shock or burns are reported to the Health and Safety Executive (HSE). Around 30 of these are fatal, most of them, arising from contact with overhead or underground power cables. Faulty electrical appliances can also lead to fires. As well as causing injuries and loss of life, fires cause damage to plant, equipment and property ( Anonymous,2016). The current control measure that had been approached for this hazard were maintaining the electrical equipment and tested by competent electrical technician,emergency exit and provided with fire extinguisher. For the new HIRARC, a few control measure had being proposed such warning sign, maintenance the room should have sufficient electrical outlets for the number of workstation in the lab. Therefore, this will reduce the risk of hazard in the workplace area. For activity cleaning the computer laboratory, the high risk level obtained was 3, where for sub activity of vacuuming the room. Electrical and ergonomic hazard were determined as hazard in this activity. Entangled wire as electrical hazard may cause trip and fall to the user during vacuuming whereas for ergonomic hazard repeated movement and frequent bending cause back ache. Thus in order to reduce risk of these hazards, further measure control that had been recommended were provide portable battery power vacuum so that no more entangle wire problem and provide vacuum with adjustable handler so that back ache problem could be solved. Next workplace is graphic laboratory 30 B which consist of four activities such walking in and out graphic laboratory, using drawing desk, during lecture, discussion or tutorial session and lastly was cleaning the workplace area. Based on this activity, hazard is identify to provide systematic and objective approach to assesing hazard in and associated risk and also to control the risk.
The highest risk level for this activity has been identified which 16 in activity of during lecture, discussion or tutorial session. The sub-activity was using electrical device that was produce electrical hazard such shock and electrocuted that cause body burn, equipment damage and fatality may be occured to the person. Current control measure that provide for this HIRARC were safety rule and emergency exit. In order to reduce hazard in the future, the further control measure that had been recommended, place warning sign and install sensor that can detect if there any electric shock happen in the room. For next sub activity of walking around graphic laboratory and during sweeping the graphic laboratory activity, the high risk level obtained was 12 and involve health hazard, dust. Dusts are tiny solid particles scattered or suspended in the air whether organic or inorganic dust depends on the source of the dust. This room was consist of inorganic duct where inorganic dust come from grinding metals or mineral such as rock or soil (Canada, 2016). The amount of dust and the kind of particles involve influence how serious the lung injury will be and the large amount of dust exposed to the person can cause asthma. Thus, further control measure that need to be considered were by provide first aid, do regular cleaning schedule and add tiles to minimize trapping dust in the room. Besides, another consequence that involve dust as health hazard for during sweeping the room activity may also cause itchy. Some current control measured were sweeping the floor and put the 5S poster as reminder to the user to keep the room clean. However, for improvemnet, further action that were proposed in this HIRARC such provide first aid and inspection of cleaning schedule. Another high risk level in cleaning garphic laboratory activity, for sub-activity which during moving drawer the high risk level achieved was 12. Biological hazard was identified that cause infection from pest such rodent and may spread Leptospirosis virus (W.Peter,2014). The infection can enter the body through breaks in the skin, contact with the eyes or by ingestion (Ai,2016). So futher action has been recomended by monitoring pest control and do routine cleaning in the room. Last activity was using drawing desk where involved sub-activity of preparation or sit on the chair.
The high risk level for this activity was 9. Fall down was identified as
mechanical hazard that cause body injury, body ache, spinal cord injury and foot injury.
Commonly fall down is cause by difficulties to adjust the desk according to the person height and limited the user movement. In new HIRARC, further action that were suggested including accomodate first aid and replace with adjustable desk and chair. In a nutshell, to help avoid any accidents at the workplace, employers and employees need to use proper safety guidelines and installation of safety systems, supervise users properly, use safe work procedures and train person or user in the proper selection, use and maintenance of breakdown protection systems to mminimize the risk at the workplace.
REFERENCES Ai,2016.
Leptospirosis.
Retrieved
from:
https://www.aisolutions.co.uk/Community/Knowledge/Topic/712/1004/Leptospirosis Anonymous,2016.
Electricity.
Retrieved
from
:
http://www.healthyworkinglives.com/advice/workplace-hazards/electricity Canada, 2016. What are The Effects of Dust on the Lungs? Retrieved from: http://www.ccohs.ca/oshanswers/chemicals/lungs_dust.html M.Miley,
2010.
Dangers
of
Cracks
in
Brick
Walls.
Retrieved
from
:
http://homeguides.sfgate.com/dangers-cracks-brick-walls-82479.html M.R.Ferguson,2014.
Truss
Uplift
Cause
and
Solutions.
Retrieved
from:
http://www.thisisdrywall.com/?p=484 W.Peter,2014. Infection. The Journal of Infectiuos Disease. IDSA Publisher.Infectious Disease Society of America. (p.127-133).