3A2E3 C15 Obj 7

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Questions and Answers

Which type of system is used to prevent fires and explosions in hydrocarbon storage tanks?

Foam system

Water mist system

Deluge system (correct)

Sprinkler system

What is the purpose of a deluge valve in a water spray system?

To distribute water over the surface

To detect heat

To connect the piping system to a water supply

To actuate the flow of water (correct)

What are the limitations to the use of water spray for fire protection?

Availability of water supply

Reliability of fire protection water

Nature of the equipment to be protected (correct)

Physical and chemical properties of the materials involved

Which type of systems can actuate system actuation valves mechanically?

Hydraulic systems Signup and view all the answers

What are water spray systems commonly used to protect?

All of the above Signup and view all the answers

What is the purpose of a water spray system?

To provide complete surface wetting Signup and view all the answers

What type of outlet is required for alcohol-type foams?

Type I Signup and view all the answers

What is the purpose of a deluge water system for hydrocarbon storage tanks?

To prevent fires and explosions Signup and view all the answers

What is the function of a deluge valve in a water spray system?

To initiate the flow of water Signup and view all the answers

What can happen if preventive measures are not put in place to cool and remove heat from a fire in a hydrocarbon storage tank?

A boiling liquid expanding vapour explosion (BLEVE) Signup and view all the answers

Which type of system is commonly used to protect equipment from exposure fires in flammable liquid and gas tankage, piping, and equipment?

Water spray system Signup and view all the answers

What factors are considered when designing a water spray system?

All of the above Signup and view all the answers

What is the purpose of a central foam distributing system?

To supply foam concentrate to the piping system Signup and view all the answers

What type of systems are often installed to protect chemical processing plants?

Foam spray systems Signup and view all the answers

Which type of foam-discharge outlet is required for alcohol-type foams?

Type I Signup and view all the answers

What is the purpose of a central foam distributing system?

To control the foam solution in the piping system Signup and view all the answers

What type of systems are often installed to protect chemical processing plants?

Foam distributing systems Signup and view all the answers

What can automatically activate a system that consists of foam spray systems and foam monitors?

Fire detectors Signup and view all the answers

What is the purpose of a deluge water system for hydrocarbon storage tanks?

To prevent fires and explosions in hydrocarbon storage tanks Signup and view all the answers

What is the function of a deluge valve in a water spray system?

To initiate the flow of water in the system Signup and view all the answers

What can happen if preventive measures are not put in place to cool and remove heat from a fire in a hydrocarbon storage tank?

A boiling liquid expanding vapor explosion (BLEVE) can occur Signup and view all the answers

Study Notes

Fire Protection Systems for Hydrocarbon Storage Tanks

Deluge systems are used to prevent fires and explosions in hydrocarbon storage tanks by rapidly releasing water or foam over the area.
A deluge valve in a water spray system opens automatically or manually to allow water from a pressurized supply to flow into the system for fire suppression.
Limitations of water spray for fire protection include its ineffectiveness against certain types of fires, potential for water damage, and inadequate cooling in some scenarios.

Mechanical Actuation of Valves

Mechanical systems can actuate valves based on changes in pressure, temperature, or manual intervention, ensuring quick response to fire conditions.

Uses of Water Spray Systems

Water spray systems are commonly used to protect hydrocarbon storage tanks, flammable liquids and gas tankage, and other critical equipment from fire exposure.
The primary purpose of a water spray system is to cool surfaces, reduce heat, and prevent the spread of fire.

Foam Systems and Outlets

Alcohol-type foams require specific foam-discharge outlets, such as those designed for high expansion foams, to be effective in suppression.
A central foam distributing system allows for efficient distribution of foam to various points in a facility, ensuring comprehensive coverage.

Chemical Processing Plant Protection

Specialized systems are often installed in chemical processing plants to provide fire protection, especially against flammable materials and potential explosions.

Activation of Foam Systems

Systems equipped with foam spray systems and foam monitors can be automatically activated by heat or smoke detection technologies, ensuring rapid response to fire conditions.

Consequences of Inadequate Fire Prevention

Without preventive measures to cool and remove heat from a fire in a hydrocarbon storage tank, a catastrophic outcome such as tank rupture, explosion, or widespread fire can occur.