A security guard sent out to work during tropical storm Helen suffered serious injuries when he fell through a wooden bridge, a High Court writ claimed yesterday. Wong Shu-kit, 59, was ordered by his supervisor to check the doors of a container office in Tsuen Wan as the severe storm raged on August 12, 1995, it is alleged. He fell more than three metres when the bridge he was walking on collapsed. Mr Wong was rescued by his boss. The writ says he was bed-ridden for two months. He now limps and suffers pain in his left knee. His sex life has been affected and he has memory loss and stomach trouble because of pain-killers he must take almost every day. Mr Wong is seeking unspecified damages from his employers, General Security (Hong Kong), and the contractors at the Tsuen Wan site, Hanison Construction Company and Hip Hing Construction Company.