BMS manufactures a full range of Petrol & Oil Interceptors (Separators) from 1,000 – 100,000 L including Full Retention, By-Pass & Forecourt Interceptors for all requirements. All BMS Interceptors are manufactured under an NSAI verified ISO 9001:2015 Quality Management System & to the European Standard; EN 858 1&2. BMS can match any inlet/outlet pipe size and offer a quick turnaround/free design advise.
Surface water from sealed surfaces flows away via drainage to receiving waters, sewers or to soakaways. If there is potential for petrol/oil spills onto these surfaces e.g. car parks, forecourts, roads, garages and depots, it is vital to intercept/separate any petrol/oil contaminants to prevent damage to the surrounding environment. The petrol/oil is then held within the interceptor for safe removal. BMS Petrol/Oil Interceptors perform this role. BMS manufactures a full range of interceptors for all applications. All BMS Interceptors are manufactured in rot proof and durable Glass Reinforced Plastic (GRP) It is critical that the correct interceptor is selected depending on a sites particular requirements to ensure that they function correctly. A number of different factors need to be taken into account when selecting the correct interceptor.
Please contact us for free advice on to the best interceptor to suit your needs.
Surface water from sealed surfaces flows away via drainage to receiving waters, sewers or to soakaways. If there is potential for petrol/oil spills onto these surfaces e.g. car parks, forecourts, roads, garages and depots, it is vital to intercept/separate any petrol/oil or silt to prevent damage to the surrounding environment. The petrol/oil/silt is then held within the interceptor for safe removal. BMS Petrol/Oil Interceptors perform this role. It is critical that the correct interceptor is selected depending on a site’s particular requirements, to ensure that they function correctly.
BMS are the largest Irish producer of Petrol/Oil Interceptors, all manufactured in our state of the art ISO 9001:2015 Quality Irish factory. BMS interceptors have been protecting water supplies on 1000s of sites in Ireland and abroad for over 30 years.
All BMS interceptors are manufactured in corrosion/rot proof Glass Reinforced Polyester (GRP/FRP) using only Lloyds rated resins and have a design life of 50+ years. BMS can match any inlet/outlet pipe size and offer a quick turnaround.
BMS are a full service manufacturer; we can provide full design advise including recommending the correct interceptor for your site along with drawings and calculations. The BMS Interceptor range is part of our ‘one stop shop’ for all your surface water management requirements from design to installation.
Firstly, you need to determine if you require a Bypass or a Full Retention Interceptor and if then if you require a Class 1 or Class 2 Interceptor.
After selecting the interceptor class and type, the selection of the correct size of interceptor is based on the flow into it based on rainfall onto a given impermeable surface area, this is known as nominal size or NS.
Each interceptor is allocated a nominal size based on EN858;2002 1-2 the European Standard for Interceptor Design and Sizing. This will indicate the nominal flow that the interceptor is sized for e.g. 4 l/s. A full retention interceptor with a capacity of 4 l/s would be designated NS04 while a By-Pass interceptor with the same capacity would be designated NSB04.
An interceptor required for a 34,000 m2 car park discharging into a local authority surface water sewer. As there is a low chance of oil spillage a Bypass Interceptor would be most appropriate. As discharge is to a surface water sewer a Class 1 Interceptor, which is designed to achieve a concentration of 5 mg/l of petrol/oil at discharge under normal conditions and includes a coalescer and a closure mechanism is most appropriate.
Based on EN858 a drainage area of 34,000 m2 gives a nominal size (NS) of 47 l/s.
So in this case BMS would select a BMS PB5 Class NS 47 l/s Bypass Interceptor, which is the closest available in our range. Please note that the Nominal Size of a Bypass Interceptor can also be denoted as NSB e.g. NSB; 31 l/s.
An interceptor required for a 1,700 m2 fuelling area discharging direct to a foul sewer Due to the high risk of fuel spillage a Full Retention Interceptor designed to contain the full contents of a fuel spill is required. As discharge is to a foul sewer a Class 2 Interceptor, which is designed to achieve a concentration of 100 mg/l of petrol/oil at discharge under normal conditions is most appropriate.
Based on EN858 a drainage area of 1,700 m2 gives a nominal size (NS) of 31 l/s.
So in this case BMS would select a BMS PF8 Class 2 NS 31 l/s Full Retention Interceptor, which is the closest available in our range. Please note that the Nominal Size of a Full Retention Interceptor can also be denoted as NSF e.g. NSF; 31 l/s.
If you have a project that requires a Petrol/Oil interceptor BMS offer free design advise. Indeed, BMS offer a free design service for your complete surface water management system and also can provide a comprehensive ‘one stop shop’ quotation from design to installation for all surface water management products.
We have 30+ years experience in surface water management and are the largest Irish manufacturer of Petrol/Oil Separators. BMS Separators are installed under most Irish roads/motorways!
BMS have also introduced a full set of Petrol Interceptor/Holding Tank Sizing & Selection Charts to help you easily size and select an Interceptor/Holding Tank suitable for your requirements. They can be downloaded at this link.
Please contact BMS if you would like to discuss your interceptor or surface water project.
BMS Three Chamber Full Retention interceptors are available in a wide range of sizes varying from 1,100 L up to 100,000 L. Larger sizes can be accommodated on order. Full Retention interceptors are used in areas where there is a high risk of petrol/oil contaminating the on-site drainage e.g. Fuel Distribution Depots, Scrap Yards, Car/ Vehicle Workshops and Washdown areas.
Under normal flow conditions, the BMS Full Retention Interceptor is designed to retain the full contents of an oil spill or contamination up to flows of 50 mm/hr.
A requirement of full retention interceptors is that they must have a large enough capacity to prevent pollutants being flushed through the unit during storm conditions.
In the case of larger drainage areas such as car parks, airports and industrial estates, Full Retention Interceptors are not practical, as they would require very large full retention petrol interceptors, making production, installation and handling more costly. A practical and economical solution to this problem is the BMS Bypass Interceptor range.
Under normal flow conditions, the BMS Bypass Interceptor will separate and retain silt and pollutants such as oil and petrol prior to discharge.
In storm conditions, when periods of peak flow are experienced, it will treat a certain percentage of the maximum flow whilst at the same time allowing the excess to by-pass the retention chamber of the unit.
As contaminated water enters the first chamber, pollutants float to the surface. Due to the unique internal design; vortex formation occurs at the by-pass pipe resulting in the pollutants being skimmed off the surface and become trapped allowing the uncontaminated water to discharge from the interceptor.
When storm flows intensity increases, the vortex pipe floods thus restricting the flow from the first chamber to the retention chamber. As a result of the increase in water level in the first chamber, hydraulic pressure increases, forcing the majority of the water through the by-pass weir and into the chamber to discharge.
BMS have developed their ‘Filterceptor’ range of Forecourt Separators in line with the proposed new CEN European Standard for light liquid separators. It doubles both as an interceptor and separator of pollutants on the petrol station forecourt where there is a significant risk of petrol or oil spillage. The Filterceptor is designed to contain the maximum contents of a spillage from a fuel delivery tanker compartment.
BMS Filterceptors Forecourt Interceptors
Doubles as both an Interceptor and a Separator of pollutants on the petrol forecourt, where there is a significant risk of petrol or oil spillage. They are designed to contain the maximum contents of a spillage from a fuel tanker compartment.
The Filterceptor unit contains an automatic shut-off valve and coalescer and is specifically designed for applications where the requirement for hydrocarbon pollutant concentration from the unit is 5 mg/l or less. When a change in the specific gravity of the liquid present in the unit occurs or when water present is replaced by less dense hydrocarbon pollutants a specially calibrated ball will drop and seal the outlet from the Filterceptor. The coalescer filter consists of a polyurethane open cell foam enclosed in a perforated PVC housing. Untreated flow cannot leave the Filterceptor without first passing through the coalescer filter. An optional extra is an oil level probe and alarm system.