Victor Dawes, lead counsel for an independent committee investigating the November 26 blaze that claimed 168 lives, also pointed to the management company’s workflow as a contributing factor in the shutdown of the Tai Po estate’s fire alarm system on Wednesday, the seventh day of the hearing.

Dawes identified the fire alarm system’s deactivation as one of six “human factors” that led to the huge death toll at the estate, which was undergoing renovations when the blaze swept through seven of its eight residential blocks.

A clerk at the property management company, ISS EastPoint, told the hearing on Tuesday that she was unaware that fire alarms had been deactivated after the hose reel system was shut down for water tank repairs.

ISS electrician Law Kwok-shui told the committee on Wednesday that he received an order from the estate management office to help Prestige Construction and Engineering, the contractor for the HK$336 million (US$43 million) renovation project, drain fire services water tanks between July and August.

Law said he “followed the order” and turned off the main switches for the fire safety system, despite knowing that fire equipment-related work should be conducted by a registered contractor.