THE Director of Housing Fung Tung said it was unfair to assess the output of the department's survey officers by only looking at the number of repairs they made. Mr Jenney's report revealed that the average output of each officer for the period from April 1990 to March 1994 was only 51 work orders a month. He said the actual performance of the officers was much lower than the target. The Housing Authority engages contractors to carry out maintenance. Minor orders were issued for repairs of under $10,000. For these, the Housing Department's quantity surveying staff used a computerised batch payment system to check details of the work to deter contractors from overclaiming. Based on a trial group formed in 1983 for checking minor works in Tsz Wan Shan Estate, the optimum performance by survey officers was 160 work orders a month, later adjusted to 134 a month in 1988. Mr Jenney said that as actual performance was much lower than the target, there was surplus staff who could be more gainfully deployed elsewhere. Mr Fung rejected this remark saying the performance of the officers could not be assessed by only looking at the number of work orders checked. The value and complexity of the orders at present was much higher than in the 1980s.