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What subject does HSG 274 Part 1 focus on?
Health and safety law, identifying and assessing sources of risk, when to assess, managing the risk, preventing the risk, record keeping are all areas that are covered by HSG 274 Part 2. Do these areas differ in the HSG 274 Part 1 or Part 3? For example, are the laws different. The risks different such as aerosol, management, etc.
Identifying and Assess Sources of Risk, When to Assess,
What is an evaporative cooling system?
Where are evaporative cooling systems typically found in a building?
Is there a law for evaporative cooling systems? If yes, please identify the law?
Design – identify the considerations to be made when designing a cooling system?
Identify the 3 common cooling towers found on site –
Identify the 2 common evaporative condensers and close-circuit cooling towers found on site –
Identify the 3 common dry/wet cooling systems found on site –
Microbial activity as estimated by dip slide or TVC at 30°C (min 48hrs incubation) desired outcome?
Legionella desired outcome?
Corrosion of carbon steel desired outcome?
Scale control desired outcome?
Physical fouling and system cleanliness desired outcome?
When and how often should a cooling system be inspected? Identify the 3 correct answers.
Identify what items require inspection during a cooling water system inspection?
Identify the types of deposits that you might find in a cooling system that will encourage bacterial growth –
Is there a single acceptable level of deposit or is this variable depending on surface coverage and thickness?
Should the fan be turned off during the cleaning and disinfection process?
What is the minimum contact time if the disinfectant level is at 50 mg/l?
What frequency of sampling is required?
Identify the correct sampling required for cooling water treatment –