THE disastrous explosion in Shenzhen has sparked new fears among Tsing Yi residents, who have been under prolonged threat from the dangerous materials stored on the island. Tsing Yi Concern Group spokesman Ting Hin-wah said whenever such accidents occurred, residents were worried that they would be the next victims. Mr Ting said while the two oil depots close to residents storing liquefied petroleum gas (LPG) would start being relocated next month, the potential threat had not been removed. He said the total volume of LPG stored on the island would be increased from 22,000 tonnes to 30,000 by the year 2000, although it would be farther away from the housing estates. ''This is a time-bomb for the residents, and no one knows when it will be detonated,'' he said. ''Residents have to live under constant fear which is unwarranted and totally unacceptable.'' After the explosion at the China Light and Power plant in Tuen Mun, they had warned the Government that if the accident had happened in Tsing Yi, the consequences would have been far more serious, Mr Ting said. ''The latest accident in Shenzhen reconfirms that our fears are not illusions. ''We hope the Government can learn from the experience and react accordingly so as to reduce our anxiety.'' Mr Ting pointed out that there were regulations regarding the distance between storage areas for dangerous materials and residential neighbourhoods in other countries, and the same practice should be implemented in Hong Kong. They had renewed their calls that the Government should remove all LPG storage depots from Tsing Yi and transfer them to places far away from inhabitants. One ideal location was Tai A Chau, Mr Ting said. The usually deserted island is being used to accommodate Vietnamese boat people, but the group hopes that after all of them have been resettled, the oil storage depots can be moved there. There are three oil storage depots on Tsing Yi, which are between 150 and 250 metres from the housing estates. The 100,000 residents are most concerned about two of the depots which store LPG because the impact would be more disastrous should an accident occur. The Government has agreed to relocate the depots to the other side of the island, but Mr Ting claimed the arrangement was still unacceptable because residents would only be shielded by a small hill, while the distance remained small.