Zainal Fitri works on an engine assembly line. He uses a handheld impact Wrench to fit a component to an engine. The assembly line makes up to 2400 engines a day and it takes approximately 3 seconds to tighten each component. As well as the risk from using a vibrating tool, Zainal Fitri often had to adopt poor postures to reach some parts of the engine. He had to repeatedly stretch out his arm and constrain his posture while tightening the adapter.
After a few weeks Zainal Fitri found that he was leaving work with shoulder and neck pain. One tea break, Zainal Fitri's line manager saw him rubbing his neck and shoulder and recognised that the pain could be due to the type of work Zainal Fitri was doing. The line manager spoke with Zainal Fitri and then told the company SHE officer about what he had seen by considering the Musculoskeletal Injuries (MSIS) issues. The company assessed the work in view of ergonomics principles and, after getting ideas from the workforce, came up with the several modification proposals. With reference to the abovementioned situation, answer all the following statements. (a) What are the THREE (3) common risk factors or features of the prevention strategies that can be used to bring about the abovementioned case?
(b) With regard to above common risk factors and prevention strategies, identify FOUR (4) potential results of the modifications performed for quality improvement to overcome the (MSI) issues.