HONG Kong will be notified immediately by China of all nuclear emergencies at Daya Bay, whether or not they are likely to affect the territory, according to an agreement signed yesterday. The agreement came after the Hong Kong Government demanded direct communication links with the power station. The signing of the memorandum represented the end of a three-day meeting on emergency co-operation between Hong Kong and Guangdong authorities. The memorandum states that the Guangdong Emergency Committee Office will immediately notify Hong Kong of all nuclear emergencies. Information to be exchanged includes identification of the facilities involved, the cause of any accident and its expected developments, weather conditions at the time, the nature and extent of radioactive releases and protective measures planned. A Security Branch spokesman said an important part of the agreement outlined arrangements to stop contaminated food being used in Hong Kong. ''In the event of an accident, all food and water will be monitored and will have to be certified fit for consumption before being allowed into Hong Kong,'' he said. Daya Bay plant lies to the northeast of the territory - 50 kilometres from the urban centre of Hong Kong. The plant is expected to start full operation in December. Yesterday's signing is expected to gain support from the International Atomic Energy Agency.