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Control of Industrial Major Accident Hazards (CIMAH) Report Page 3
Ranhill SAJ Sdn Bhd Revision 01
Executive Summary Date Aug 2019

3.2 Summary of Key information presented in the Report

3.2.1 Part A: Information on the Hazardous Substance

The following chemical substances are being used for the water treatment
process at the Kampung Tengah 1 & Kampung Tengah 2 Water
Treatment Plant:
• Chlorine
• Sodium Silicofluoride
• Polyaluminium Chloride
• Soda Ash

Two (2) substances are identified in this report as hazardous substances
as defined in the CIMAH Regulations 1996. One is the toxic gas, namely
Chlorine and the other is a toxic substance, namely Sodium Silicofluoride.
The maximum quantity of CIMAH hazardous substances that may be
stored on site as follows:

Hazardous Hazardous Quantity Likely Threshold Ref.
Substance Classification Onsite (tonnes) Quantity
Substances above Threshold Quantity

12.6 tonnes 10 Group 2-Toxic
Chlorine Toxic Substances (KT1 = 3.3 tonnes; tonnes Substances (quantity >
KT2 = 9.3 tonnes) 1 tonne) of Schedule 2
Substances above 10% of Threshold Quantity

Sodium Other Toxic 5.4 tonnes 10
Silicofluoride Substances (KT1 = 2.4 tonnes; tonnes Item 2 of Schedule 1
KT2 = 3.0 tonnes)
Substances below 10% of Threshold Quantity which could be a potential Initiating Event of
Major Accident *
Hazardous Hazardous Quantity Likely Threshold
Substance Classification Onsite (Litres) Quantity Ref.
Nil - - - -
Chemicals not classified as hazardous substances as per Schedule 1 and Schedule 2 of the
CIMAH Regulations 1996.
Name of Chemical Quantity likely onsite
64.5 tonnes
Polyaluminium Chloride
(KT1 = 24 tonnes; KT2 = 40.5 tonnes)
Soda Ash 69 tonnes
(KT1 = 24 tonnes; KT2 = 45 tonnes)