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Full Retention Petrol Interceptors used for high-risk areas e.g. petrol station forecourts
These tend to be normally much smaller surface areas
This type of interceptor provides 100% coverage
Required for safety & environmental reasons
Installed on surface water drainage systems to protect receiving waters from oil pollution
Class 1
This takes into account the accumulation of silt and subsequent loss of capacity; the tank is therefore sized to allow for this.
Available in Single stage, Two stage, Three stage
Designed in accordance with the recommendations of PPG3
9 models from NS4/1 – NS100/1 (larger available on application)
Bypass Petrol Interceptors:
Used on larger low risk areas e.g. car parks
Designed to cope with 10% of calculated peak storm flows
During full storm conditions any pollutants are diluted
Retained pollutants are left undisturbed by storm flows as the increased flows bypass the chamber
Drainage areas 833-55,566m
Class 1
This takes into account the accumulation of silt and subsequent loss of capacity; the tank is therefore sized to allow for this.
Available in Single stage, Two stage, Three stage
Designed in accordance with the recommendations of PPG3
Capacity from 1,000 litres to 33,000 litres (larger sizes available on request)
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