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Control of Industrial Major Accident Hazards (CIMAH) Report Page 1
Ranhill SAJ Sdn Bhd Revision 01
Executive Summary Date Aug 2019

EXECUTIVE SUMMARY

1. Introduction

1.1 Name and Address of the Installation

Ranhill SAJ Sdn. Bhd.
Kampung Tengah 1 & Kampung Tengah 2 Water Treatment Plant,
Jalan Kolam Air, Kampung Tengah,
85000 Segamat, Johor, Malaysia.

1.2 Preparation of Report

This is the updated CIMAH Report for Ranhill SAJ Sdn. Bhd. (RSAJ)
Kampung Tengah 1 & Kampung Tengah 2 (KT1 & KT2) Water Treatment
Plant (WTP). On-site assessment was conducted by the CIMAH competent
person as part of preparation for this report.

1.3 The Activities Involved with the Hazardous Substance

For the water treatment process, Chlorine is utilized in the water treatment
plant for water purification process and disinfection to control any
pathogenic organism in the water before it is supplied to consumers. Under
Schedule 2, Group 2 of the CIMAH Regulations, Chlorine is regarded as a
toxic substance that could pose a major hazard if the quantity available on-
site is greater the 10 tonnes. The amount of Chlorine available at the KT1 &
KT2 WTP has exceeded the CIMAH Regulations 1996 threshold quantity,
thus it is subject to the CIMAH Regulations 1996 for full compliance.

Besides Chlorine, Sodium Silicofluoride is also dosed at the treated water
to prevent tooth decay. It is classified as other toxic substances under
Schedule 1, Item 2 of the CIMAH Regulations 1996. However, the storage
and use of Sodium Silicofluoride at the water treatment plant are unlikely to
give rise to a major accident hazard.