Duct cleaning
Grease cleaning

 

 

 

 

 

 

Eurocom Technical Services undertakes pre-treatment bacteria and fungal surveys upon which a cleaning programme can be based. Cleaning is carried out using physical and solvent – enhanced methods. These methods incorporate the use of several techniques including remote operated rotating vacuumed filtration equipment. The system is then disinfected by completely fogging using a specialist chemical; this ensures that hygiene and cleanliness are of the highest possible standard. Analytical swabs are taken to confirm the works have been satisfactorily carried out. During the process it could be necessary to install additional access doors at appropriate intervals within the system as per B&ES (Building & Engineering Services Association) TR19 specifications. Eurocom engineers can make recommendations and fit as required.

 

Our services include:

• Mechanical cleaning of air conditioning ductwork to B&ES TR19 requirements, to ensure energy reductions or minimal use of energy due to clean resistance free systems
• Access doors and fire dampers supplied and fitted
• Air quality management and ongoing monitoring of air ductwork systems, including sampling
• Biocidal disinfection of ductwork systems
• Mechanical cleaning of Kitchen Extract Systems
• Fire Damper Maintenance and Validation to the latest Fire Risk Assessment standards
• Inspection and Certification of LEV Systems maintained to HSG258
• All air hygiene works comply with B&ES TR19 guidance – a specific requirement by insurance companies with regard to Kitchen Extract Systems and TM:26
• Ventilation hygiene risk assessments, also (VHRA) for Indoor Air Quality monitoring
• Filtration units and housing including safe change and side access

Air Hygiene Risk Assessment

 

We carry out air quality sampling which consists of:

• Particulates
• Bacterial and fungal counts
• CO2 and CO levels
• Temperature and humidity

We also carry out risk assessments of all air ducted systems to the requirements of B&ES, TR17 and BSRIA specifications. Our air hygiene surveys include CCTV video footage for inaccessible areas of ductwork.

Benefits

 

A number of benefits may be derived from the cleaning of ventilation systems:

 

• Staff efficiency - in extreme cases where "Sick Building Syndrome" has been experienced, there should be a noticeable drop of staff absenteeism and productivity will increase.
• Fire Safety - by reducing the contamination in the ducting, the combustion load of fire safety is greatly enhanced.
• Image - it will improve the environmental image of the company.
• Costs - there is a potential to reduce the running costs due to reduction in electrical loading and in certain instances fuel consumption.
• Mechanical Efficiency - is increased and a reduction in airborne dusts can help to protect sensitive equipment.

Ductwork Cleaning Methods

 

Rotary Brush System

 

The ductwork can be cleaned by using a rotary brush system that can rotate both clockwise and anti-clockwise. Different sized brushes can be used to suit the various sizes of ductwork that require cleaning. The supply diffusers extract grilles or access covers are removed in order to facilitate the cleaning works.

 

A powerful extraction ventilator with overflow of 4500³m/h is attached to the extraction point creating a vacuum that removes the dust.

 

The rotary brush is fed into the ducting and agitates the contamination away from the duct walls, the contamination is then carried in the air flow to a filter located in the powerful ventilator and then collected into the bags. The supply diffusers and extract grilles are manually cleaned using industrial cleaning machines and replaced on completion.

 

The Jet Air Knife System

The ductwork can also be cleaned using the jet air knife system in conjunction with a negative air extraction unit. The negative air extraction unit is connected to access points along the ducting, the air knife is then propelled down the ducting by compressed air, this subsequently releases the contamination which is drawn into the suction of the negative air extraction unit into a filtered system.
This system can reduce the number of access doors required as the jet air knife only needs a 38mm access point, which when works are completed would have a 38mm grommet installed.

Eurocom Technical Services will produce a “before and after” photographic report along with a Certificate of Conformity which can be used in your Health, safety and welfare manual.

Legislation

 

The Workplace (Health and Safety Welfare) regulations 1992 – require that effective provision should be made to ensure that every enclosed workplace is ventilated by a sufficient quantity of fresh purified air. Where this ventilation is provided by mechanical means, the regulation require those mechanical ventilation systems to be maintained (including cleaned as appropriate) on an efficient state, in efficient working order and in good repair. Failure to carry out these duties is a breach of the regulations.

 

The Approved Code of Practice (ACoP) Regulation 6 – states that: Mechanical Ventilation Systems, including air conditioning systems, must be regularly tested and cleaned to ensure that they do not contain anything which may contaminate the air.

 

Health and Safety at Work Act 1974 – lays down that the employers or person concerned with the premises owe the “common duty of care” both to the employers and others who may use or visit the premises. They are required to exercise this duty “so far as is responsibly practical”.

 

The Control of Substances Hazardous to Health (COSHH) Regulations, Statutory Instrument No 1657, 2004 – this requires an employer to make a formal assessment of health risks from hazardous substances, which includes human pathogens or any other dusts present in substantial quantities in the air. Regulation 7 (1) requires the employer to prevent exposure of his employees to substances hazardous to health, or where this is not practical, to ensure that any exposure is adequately controlled.

 

The Occupiers’ Liability Act 1984 - impose a duty of care on an occupier of premises to prevent (so far as reasonably practicable) risk to others of injury, which includes any disease and impairment of physical or mental condition.