TNAG-1361-FCO40-1807-Hong-Kong-Hansard-reports-and-minutes-of-the-meetings-of-the-1985 — Page 32

Supplementary to Question No. 6 in the

Legislative Council on 3 April 1985

Mr. CHAN Ying-lun :- Sir, while I am satisfied with the reply by the

Secretary for Lands and Works, can he further explain the reasons for

the build up of solid matters on the inside of the pipes as mentioned

in paragraph 2 of the reply?

Secretary for Lands and Works :- It is normal over the years that

various matters such as grit and grease do get into the drainage

systems and solidify. The problem is exacerbated by construction

activities where people wash down the cement slurry into the drainage

system and the cement slurry solidifies inside the pipes.