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Suppliers blame gas type for intensity of deadly explosion

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THE explosion which rocked the Tuen Mun flat, killing one and injuring eight others, was more intense than usual because of the type of gas connected to the building, the gas supplier said.

The flat, one of 20,000 households still using substitute natural gas rather than Towngas, has now become the subject of close examination by fire and gas experts from the Government and the Hong Kong and China Gas Company which supplied the natural gas.

A Hong Kong and China Gas Company spokesman said yesterday that Tuen Mun was the only area in Hong Kong with natural gas connected and that facilities to pipe in Towngas would not be in place until 1995.

She said if Towngas rather than natural gas had been connected to the building, the blast would have been different.

''The explosion range or the area taken in by the blast is less with natural gas than with Towngas but the blast is more intense. The explosion power is higher in natural gas,'' she said.

Substitute natural gas is a combination of LPG and air. Towngas is made up mostly of carbon monoxide, oxygen, methane and hydrogen.

It is understood that natural gas is less toxic than Towngas which affects the nervous system because of the strong presence of carbon monoxide.

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