ngc 1 june 2011
June 2011 NGC 1
Question 1 A workshop has experienced a number of accidents that were due to inadequate selection and implementation of risk controls.
(a) Identify FOUR of the general principles of prevention. (4) general principles of prevention such as the avoidance of risks; the evaluation of unavoidable risks; controlling hazards at source; adapting to technical progress and adapting work to the individual; replacing the dangerous by less or non dangerous alternatives; developing a coherent prevention policy; giving priority to collective over individual protective measures; and giving appropriate instructions to employees
(b) Give the meaning of the term ‘hierarchy of control’. (2) measures designed to control risks which are considered in order of importance, effectiveness or priority or measures designed to control risk that normally begin with an extreme measure of control and end with personal protective equipment as a last resort.
(c) Outline how a typical hierarchy of control should be applied. (8) on the application of a typical hierarchy of control, candidates should have begun with the possibility of eliminating the risks either by designing them out or changing the process. The next step would be the reduction of the risks by, for example, the substitution of hazardous substances with others which were less hazardous. If this were not possible, then isolation would have to be considered, using enclosures, barriers or worker segregation. The application of engineering controls such as guarding, the provision of local exhaust ventilation systems, the use of reduced voltage systems or residual current devices would follow as would management controls such as safe systems of work, training, job rotation and supervision with the final control measure being the provision of personal protective equipment such as ear defenders or respiratory protective equipment.
(d) Outline the factors to be considered when selecting an
Question 1 A workshop has experienced a number of accidents that were due to inadequate selection and implementation of risk controls.
(a) Identify FOUR of the general principles of prevention. (4) general principles of prevention such as the avoidance of risks; the evaluation of unavoidable risks; controlling hazards at source; adapting to technical progress and adapting work to the individual; replacing the dangerous by less or non dangerous alternatives; developing a coherent prevention policy; giving priority to collective over individual protective measures; and giving appropriate instructions to employees
(b) Give the meaning of the term ‘hierarchy of control’. (2) measures designed to control risks which are considered in order of importance, effectiveness or priority or measures designed to control risk that normally begin with an extreme measure of control and end with personal protective equipment as a last resort.
(c) Outline how a typical hierarchy of control should be applied. (8) on the application of a typical hierarchy of control, candidates should have begun with the possibility of eliminating the risks either by designing them out or changing the process. The next step would be the reduction of the risks by, for example, the substitution of hazardous substances with others which were less hazardous. If this were not possible, then isolation would have to be considered, using enclosures, barriers or worker segregation. The application of engineering controls such as guarding, the provision of local exhaust ventilation systems, the use of reduced voltage systems or residual current devices would follow as would management controls such as safe systems of work, training, job rotation and supervision with the final control measure being the provision of personal protective equipment such as ear defenders or respiratory protective equipment.
(d) Outline the factors to be considered when selecting an