Technical Risk and Recovery Engineers

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Chloride analysis

Chloride analysis is the sampling and testing for the presence of chloride ions in contamination.

Analysis of this type is necessary as combustion of PVC (Poly Vinyl Chloride) releases gaseous HCl.

This gas then combines with water to form Hydrochloric Acid, which condenses on the surfaces.
This acid can then cause corrosion to unprotected metal parts.
Risk assessment and damage control
Chloride analysis can be used to map the levels of contamination throughout a premises
and is an important tool for the process of risk assessment of secondary damage after a

AREPA use Potentiometric Titration to measure the concentration of CL-, which I stated in μg Cl-/cm².

The danger line
The danger lines in connection with chloride pollution varies depending the type of equipment, but generally they are around 6-14 μg Cl-/ cm².


Although knowing the levels of contamination is an important part of the risk assessment process, correct interpretation of the results is required.
However, this is also dependent on the situation. For example, equipment on board a sea-going vessel would have a high background chloride level as a result of the maritime atmosphere, similarly, the substances used in any production processes in the area could result in artificially high readings.
The most important factor of assessing the risk of damage to technical equipment following a fire is the knowledge and experience of the personnel involved

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