Shimizu Senior Site Engineer Interview Questions, Process, and Tips

Bus bar schemes are different ways of connecting bus bars in power systems.

• Single bus bar scheme

• Double bus bar scheme

• Main and transfer bus bar scheme

• Ring bus bar scheme

• Breaker and a half scheme

• Mesh bus bar scheme

The equipment sequence for any line bay starts with the circuit breaker and ends with the transformer.

• The circuit breaker is the first equipment in the sequence.

• Next comes the isolator switch.

• After that, the earth switch is operated.

• Then the line disconnector is opened.

• Finally, the transformer is disconnected from the line.

• The sequence is reversed when the line bay is put back into service.

Blinding is the process of isolating a section of a pipeline or equipment to prevent flow or contamination.

• Temporary or permanent blinds can be used depending on the situation

• Common types of blinds include spectacle blinds, paddle blinds, and bleed rings

• Blinding is often used during maintenance or repair work to ensure safety

• Blinding can also be used to prevent contamination during storage or transportation

• Blinding can...read more

Before starting work in a refinery equipment, certain procedures must be followed.

• Obtain a work permit

• Perform a safety check of the equipment

• Ensure proper personal protective equipment is worn

• Verify that all valves are in the correct position

• Confirm that the equipment is properly grounded

• Check for any leaks or abnormal conditions

• Communicate with other workers in the area

• Follow all established procedures and protocols

I will follow the emergency response plan and evacuate the area immediately.

• Activate the alarm system to alert others in the area

• Put on personal protective equipment (PPE) including a respirator

• Evacuate the area immediately and move to a safe location

• Notify emergency services and follow the emergency response plan

• Monitor the situation and wait for the all-clear signal before returning to the area

I would advise my workers to start unbolting the heat exchanger head from the top and work their way down.

• Start from the top and work your way down

• Use appropriate tools and safety equipment

• Follow proper procedures and guidelines

• Ensure all bolts are properly labeled and accounted for

• Inspect the gasket and replace if necessary