The Housing Department will spend about $390 million replacing 150,000 doors of public rental flats that are not sufficiently fire-proof. But 230,000 households will not benefit from the 18-month project as they are considered to be close enough to the main fire exits in their buildings. 'After replacing these doors, we believe the fire safety in these public rental flats will be acceptable,' Secretary for Housing, Planning and Lands Michael Suen Ming-yeung said during yesterday's Legislative Council meeting. About 380,000 rental flats built before 1996 are fitted with wooden doors that are less fire resistant than those in flats built since then, when the Building Ordinance's fire safety requirement was raised. Under the previous Building Ordinance, the older-style doors were only required to withstand a fire for less than 30 minutes. Mr Suen said it would cost $600 million to upgrade all the doors and therefore only those in flats located far from the main fire exit or at dead ends would be replaced. But Andrew Cheng Kar-foo, from the Democratic Party, said the partial replacement programme still put a majority of residents' lives at risk. 'We should not compromise to risk even a single life,' he said. Mr Suen said the programme would be reviewed to see if there was a need to extend it.