Dairy Farming Quiz

Which of the following is a common practice in dairy farming?

Feeding cows with grass and hay

What is the main product of dairy farming?

Milk

What is a common method used in dairy farming to collect milk?

Hand milking

What are three factors that must be considered to prevent risks in underwater welding?

adaptability to a marine environment, proper insulation, and controlled welding current Signup and view all the answers

What is the occupational safety issue that commercial divers must consider in underwater welding?

risk of decompression sickness due to increased pressure of breathing gases Signup and view all the answers

What are some potential long term effects associated with underwater welding?

possible musculoskeletal effects and cognitive effects Signup and view all the answers

What is hyperbaric welding and where is it commonly used?

Hyperbaric welding is the process of welding at elevated pressures, commonly used for repairing ships, offshore oil platforms, and pipelines. Signup and view all the answers

What is the difference between hyperbaric welding and underwater welding?

Hyperbaric welding is used in a dry environment, while underwater welding is used in a wet environment. Signup and view all the answers

Why is dry hyperbaric welding preferred over wet underwater welding for high-quality welds?

Dry hyperbaric welding allows for increased control over conditions, such as heat treatments, resulting in higher quality welds compared to wet underwater welding. Signup and view all the answers

What are the advantages of underwater welding in marine maintenance and repair?

It bypasses the need to pull the structure out of the sea and saves valuable time and dry docking costs. It enables emergency repairs to allow the damaged structure to be safely transported to dry facilities for permanent repair or scrapping. Signup and view all the answers

What is the most common diving method for underwater welders?

Surface supplied air. Signup and view all the answers

What is the main welding process used in dry hyperbaric welding?

Gas tungsten arc welding (GTAW). Signup and view all the answers

What are the limitations of dry hyperbaric welding?

As the pressure increases, there is a degradation in capability and efficiency. Dry hyperbaric welding has been limited operationally to less than 400 m (1,300 ft) water depth by the physiological capability of divers to operate the welding equipment at high pressures and practical considerations concerning construction of an automated pressure / welding chamber at depth. Signup and view all the answers