“…MAPS experienced a serious flow blockage in 1987 due to the extensive growth of mussels, Perna indica Kuriakose and Nair and Perna uiridis (L.), in the cooling water system (Rajagopal et al, 1991a) and this frequently resulted in station established mussel communities, such as those in the MAPS tunnel, requires continuous doses of chlorine (Rajagopal et al,199lb). This leads to the question of environmental safety, as chlorine has been reported to be toxic to non-target organisms (Brungs, 1977;Smith and Kretschner, 1984;Jenner, 1985).…”