Introduction to Health and Safety at Work

Explain
the meaning of the term ‘dilution 
venti lation’
(b) 
Outline
the circumstances in which the use of 
dilution ventilation may be appropriate.
30. A local exhaust ventilation (LEV) system is used to 
extract welding fume from the working environment 
in a fabrication workshop.
(i) 
Ouline
the factors that might reduce the effect-
iveness of the LEV system
(ii) 
Identify
the possible affects that the use of the 
LEV system may have on the local and wider 
environment.
31. Local exhaust ventilation (LEV) systems must be 
thoroughly examined at least every 14 months. 
Out-
line
the routine maintenance that should be car-
ried out between statutory examinations in order to 
ensure the continuing effi ciency of a LEV system.
32. (a)
Outline_the_general_issues_relating_to_the_selection_and_use_of_PPE_that_will_help_to_ensure_its_effectiveness_in_controlling_hazards._34._(a)_Explain'>Outline
the requirements of the Personal Protect-
ive Equipment at Work Regulations
(b) 
Outline
the factors which should be considered 
when selecting personal protective equipment.
33. An organization uses various types of personal pro-
tective equipment (PPE). 
Outline
the general issues 
relating to the selection and use of PPE that will help 
to ensure its effectiveness in controlling hazards.
34. (a)
Explain
the difference between breathing appar-
atus and respirators
(b) 
Outline
the main limitations of a half-mask 
re-usable respirator.
35. (a)
Identify
the types of hazard against which gloves 
could offer protection
(b) 
Outline
the practical limitations of using gloves 
as a means of protection.
36. (a)
Identify THREE
types of hazard for which per-
sonal eye protection would be required
(b) 
Outline
the range of issues that should be 
addressed when training employees in the use of 
personal eye protection.
37. (a)