TWO workers died in an explosion caused by air entering two high pressure hydrogen storage receivers in a Castle Peak power plant, a coroner's court heard yesterday.
Dr Richard Jack, scientific services officer for China Light and Power Company Ltd, was testifying in the inquest into the deaths of two engineers with the company.
Mr Wong Kwong-yu, 28, and Mr Yip Ka-pui, 41, died in the explosion on August 28 last year.
Coroner Mr Warner Banks heard that hydrogen coolant was either produced on site or stored in bottles. The explosion occurred during the manufacturing of hydrogen on site.
During a site visit on Monday, Dr Jack briefed Mr Banks, a jury and legal representatives on the operation of the plant and how the explosion occurred.
He said a board of inquiry set up after the accident concluded that the explosion was caused by a mixture of air and hydrogen in the high pressure receivers.