GB 50028-2006Code for design of city gas engineering (English PDF)

1.0.1

This standard is formulated with a view to conform to the city gas engineering design requirements for safe production, reliable supply, reasonable economical efficiency and environmental protection.

1.0.2

This standard is applicable to the design of new, expanded and renovated city gas engineering to supply fuel gas for domestic and commercial use, production of industrial enterprise, heating, ventilation and air conditioning in cities, towns and residence communities, etc..

Note. 1 This standard is not applicable to the long-distance gas transmission pipeline engineering in front of city gate.

2 This standard is not applicable to the design of gas engineering by industrial enterprises themselves for technological design and the gas quality does not conform to the quality requirements of this standard. But the gas engineering by industrial enterprises themselves for technological process and the gas quality conforms to this standard can be designed according to this standard. If the gas for self use in industrial enterprises is supplied to residents, the gas quality and engineering design shall comply with this standard.

3 This standard is not applicable to the design of gas appliances used in ships, river steamers, railway vehicles, automobiles, etc..

1.0.3

During the design of the city gas engineering, the effective new process, technology, materials and equipment should be positively used based on successful experiences in production, construction and scientific experiments in order to ensure the technique is the latest and most economical and reasonable.

1.0.4

The city gas engineering planning and design shall comply with Chinese energy policy. The city gas engineering should be designed in accordance with city master plan as well as energy planning, environmental protection planning and fire-fighting planning, etc..

1.0.5

The design of city gas engineering shall comply not only with the requirement stipulated in this code, but also those in current relevant ones of the nation.

2.0.1 City gas

A kind of combustible gas conforming to this standard, which is supplied for domestic and commercial use, industrial production, heating, ventilation and air conditioning, etc., by the transmission and distribution system from the regional gas sources in cities, towns and villages or residential communities. The city gas generally includes natural gas, liquefied petroleum gas and manufactured gas.

2.0.2 Manufactured gas

A kind of combustible gas which conforms to "Manufactured Gas" GB 13612, and is made from solid, liquid or gas (including coal, heavy oil, light oil, liquefied petrolatum gas, natural gas, etc.) conversion. It is also called coal gas for short in China.

2.0.3 Gas for domestic use

The gas for domestic cooking and water heating, etc.

2.0.4 Gas for commercial use

The gas used by commercial users (including the users in public buildings) for production and living.

2.0.5 Reference gas

The standard gas of a fuel gas.

2.0.6 Odorant

A kind of organic compound or mixture with strong odor. The gas with low odorant content gives a special and unpleasing caution odor so that the leaking gas can be found when the gas exposure concentration reaches 20% of the lower explosion limit or causes harm to human body.

2.0.7 Vertical retort

The abbreviated of Didier-Werke continuous vertical carbonization retort.

2.0.8 Crucible swelling number

The index of coal caking property.

2.0.9 Gray-King index

The index of coal coking power.

2.0.10 Roga index

The index of coal caking.

2.0.11 Chemical reactivity of coal

The index of reactive capability of reducing carbon dioxide to carbon monoxide by

3.1 Gas Consumption

3.1.1

The design of gas consumption shall be determined according to local gas supply principle and conditions. It includes the following gas consumption.

1 Consumption of gas for domestic use;

2 Consumption of gas for commercial use;

3 Consumption of gas for industrial production;

4 Consumption of gas for heating, ventilation and air conditioning;

5 Consumption of gas for gas-powered automobiles;

6 Consumption of gas for other uses.

Note. If the city gas is used for electric power generation or heating in a power station, the design gas consumption should include the gas consumption in it.

3.1.2

The design of gas consumption for various use purposes shall be deter...