POM: Process Hazard 2.2 - 2.10

POM: Process Hazard 2.2 - 2.10

•Hazard of Utilities

•Hazard of Water

•Hazard of Steam

•Hazard of Ice

•Hazard of Compressed Gas

•Hazard of Air

•Hazard of External Events

•Hazard of Equipment & Instruments

•Hazard of Piping, Valve & Hoses

Multiple Select

Select all scenario considered as hazard of utilities.

• Mixture of hazardous process chemical inside the process line.

• Electrical power failure

• High concentration of utilities nitrogen gas in atmosphere.

• Utilities gas flow into process line.

Multiple Choice

What is the component used to prevent process fluid flow into utilities line?

• Check Valve

• Ball Valve

• Gate Valve

• Globe Valve

• All answer correct

Multiple Choice

What might be happen when water mix with hydrocarbon product?

• Pump suddenly stop

• Gasket Leak

• Produce emulsified product

• All answer correct

Multiple Choice

What will happen if water is suddenly heated above boiling point in confine space?

• Explosion

• Water freezing

• Nothing happen to water

• Water start to boil

Multiple Choice

"Water from fire fighting can spread hazardous chemical to others part of plant."

• True

• False

Multiple Choice

"Water from fire fighting not dangerous when used near the high voltage equipment."

• True

• False

Multiple Choice

"It was safe to suddenly apply cold water to hot piping to reduce the temperature."

• True

• False

Multiple Choice

If 1m³ of water was vaporized at 100^oC, how much the volume of vapour will occupied the space?

• 1.6 m³

• 160 m³

• 1600 m³

• All answer wrong

Multiple Choice

What might be happen after maintenance activities when steam was used to clean and remove the oxygen inside the pressure vessel?

• Electrical power trip

• Instrument malfunction

• Water left inside the vessel

• Reduce vessel material strength

Multiple Choice

What might be happen if distillation column reboiler system leak into the column?

• High gas flow and damaging the component.

• Gas flow too low inside the column and produce reject product.

• Distillation temperature drop suddenly and electrical power trip.

• Hydrocarbon stop flowing inside the distillation column.

Multiple Choice

What would happen to not flowing or flowing very slow water inside the piping if the temperature drop below 0^oC?

• Freezing

• Freezing and Expand

• Expand

• Water still in liquid form

Multiple Choice

Why compressed gas are hazardous?

• High pressure inside the cylinder

• High temperature inside the cylinder

• Working at high

• All answer wrong

Multiple Choice

The mixture of oxygen and flammable gas can cause _________________.

• fire in the plant.

• flammable gas temperature drop.

• production increase.

• oxygen gas increase.

Multiple Choice

How to remove the oxygen in the process line?

• Close the valve.

• Open valve to vent line.

• Purge compress air.

• Purge inert gas.

Multiple Select

Select all that related to hazard of external event.

• Flooding

• Lightning

• Fire

• Earthquake

Multiple Choice

How fired furnace can explode during firing?

• Firebox filled with water.

• Fuel gas supply clog.

• Furnace door open.

• Firebox filled with flammable gas and oxygen.

Multiple Choice

How to solve the issue of empty process fluid piping triggered low temperature and signalling burner to start ?

• Install pressure relive valve

• Install check valve

• Install flow measurement device

• Install temperature measurement device

Multiple Choice

What is the correct explaination for 'Fail Open' ?

• When there is a loss of signal, the valve opens.

• When the signal is lost, the valve will close.

• The valve does not change or react when power is lost.

• All answer wrong.

Multiple Choice

"Failure of the input side of the DCS card is a

more serious compare to failure of the output site of the DCS."

• True

• False

Multiple Choice

What is the correct explaination for 'Fail Open' ?

• When there is a loss of signal, the valve opens.

• When the signal is lost, the valve will close.

• The valve does not change or react when power is lost.

• All answer wrong.

Multiple Choice

Why hydraulic hammering can happen in piping line?

• Suddenly open/close valve.

• Somebody knocking the piping with hammer.

• Fluid flow too fast.

• The temperature too high during operation.

Multiple Choice

Select all related hazard related to pigging equipment.

• Operator exposed to hazard chemical

• Pig accidently shooting out.

• Heavy pig drop

• All answer correct

Multiple Choice

What is the purpose of Cathodic Protection System in underground piping?

• Protect from corrosion

• Prevent high pressure

• Reduce the temperature

• All answer correct

Multiple Choice

How to solve the problem high pressure surge from upstream to down stream when opening the Shutdown Valve (SDV)?

• Install small diameter bay-pass valve.

• Open slowly SDV

• Install double SDV at line

• Replace SDV with control valve.