Gas Supply in Britain

From which of the following sources does Britain NOT get its gas?

• Pipelines from continental Europe and Norway

• North and Irish Sea production

• Import from the Middle East via tankers

• Liquefied Natural Gas (LNG) shipped in from around the world

Approximately what percentage of gas supplies do the North and Irish Sea fields provide for Britain?

• 20%

• 40%

• 60%

• 80%

As a result of the decline in production from the North and Irish Sea fields, what action is Britain taking to ensure gas supply?

• Increasing production in other domestic fields

• Importing more gas from abroad

• Investing in renewable energy sources only

• Rationing gas to reduce consumption

How long is the Langeled pipeline, which is the longest underwater gas pipeline in the world?

• 1,200 km

• 14.2 bcm a year

• 25.5 billion m³/yr

• 26.3 bcm

Who owns and operates the National Transmission System (NTS) for gas in Great Britain?

• The British Government

• The National Grid

• A private consortium

• The European Union

Approximately how many miles of high-pressure pipe does the National Transmission System (NTS) comprise?

• 3,000 miles

• 4,760 miles

• 5,500 miles

• 6,200 miles

What is the pressure range for intermediate pressure gas mains in the United Kingdom?

• 75 mbar to 2 bar

• 30 mbar to 75 mbar

• 2 bar to 7 bar

• Up to 69 bar

Which materials are used to construct intermediate pressure gas mains?

• Polyethylene and cast iron

• Steel and polyethylene

• Cast iron and ductile iron

• Steel and ductile iron

What is the pressure range for medium pressure gas mains in the United Kingdom?

• 2 bar to 7 bar

• 75 mbar to 2 bar

• 30 mbar to 75 mbar

• Up to 69 bar

Which materials are used to construct medium pressure gas mains?

• Polyethylene, cast iron, and ductile iron

• Steel, polyethylene, and cast iron

• Steel, cast iron, and ductile iron

• Polyethylene and steel