Process Unit Shutdown 3/3

What is the purpose of purging with steam?

• To remove air from the system

• To remove hydrocarbon liquids and gases

• To reveal plugged drains and vents

• To introduce inert gases into the system

Which of the following is a suitable method for purging waxes and sticky materials from process systems?

• Purging with steam

• Purging with inert gases

• Purging with natural gas

• Purging by water flooding

What is the purpose of blinding in the process equipment?

• To remove undesired gases

• To block flow in piping and vessels

• To heat the equipment

• To introduce hydrocarbon liquids

Why should technicians periodically drain steam condensate from low points in the system?

• To remove hydrocarbon liquids and gases

• To reveal plugged drains and vents

• To prevent liquid buildup

• To remove air from the system

What is the purpose of purging with inert gases such as nitrogen or carbon dioxide?

• To reveal plugged drains and vents

• To remove hydrocarbon liquids and gases

• To introduce inert gases into the system

• To remove air from the system

When is purging with water flooding suitable?

• For removing air from the system

• For removing hydrocarbon liquids and gases

• For removing water-soluble materials

• For removing sticky materials

Why should water purging be performed with warm water?

• To remove sticky materials

• To remove water-soluble materials

• To remove hydrocarbon liquids and gases

• To remove air from the system

What is the purpose of blower setup in the equipment before entry?

• To ventilate the equipment

• To remove undesired gases

• To block flow in piping and vessels

• To introduce hydrocarbon liquids

What must workers wear before opening any vessel that may contain hydrocarbon or hydrogen sulfide gas?

• Breathing apparatus

• Protective gloves

• Safety goggles

• Ear protection

What should be done before anyone enters the equipment?

• Vent the equipment

• Remove blinds

• Test for hazardous materials

• Install blinds