duct cleaning | ductwork & air vent system cleaning services -...

1B The Gattinetts Hadleigh Road East Bergholt CO7 6QT Tel: 0870 6092080 Fax: 01206299746

www.pro-ductclean.com Company No: 5309850 [email protected]

John Wakefield Workplace Safety Management 2 Highmeres Road Troon Industrial Estate Leicester Leicestershire LE4 9LZ 3 June 2013

Hygienic Deep Clean and Certification of the Supply Ductwork at Dendron Limited, Caxton Court, Caxton Way, Watford Business Park, Watford, WD18 8RH Post Clean Swab Analysis Report Dear John The Air Supply Ductwork was signed off as complete by yourself on Sunday 26th May 2013. A total of 7x Swabs were taken at the time. We have no further recommendations to make at present. I hope this report includes all the relevant information required, however if there is any further information needed in addition to this we will be happy to oblige. Yours Sincerely, Simon Hughes Business Development Manager



Clean and Certification of Air Supply Ducting

Completed on behalf of Workplace Safety Management at

Dendron Ltd, Caxton Court, Caxton Way, Watford Business Park, Watford, WD18 8RH

24 – 26 May 2013



Contents

• Introduction to Pro Duct Clean Limited

• B&ES Certificate

• Why should Ventilation Systems be cleaned?

• Scope of Works & Observations

• Photographs

• Laboratory Report

• Recommendations



• Introduction to Pro Duct Clean Limited

• About PdC

Between us at PdC our directors have 20 years of experience in commercial cleaning for a wide range of industries. We offer a reliable, professional service, taking care of this necessary but unpleasant task without disrupting normal business.

This work is signed off by yourselves before we allow our operatives to leave. This ensures that both our standards and yours are met and exceeded.

We are covered for up to £10 million public liability and can also provide all relevant COSSH data, Health & Safety and Risk Assessment documents.

We will assess any problems on your site, advise you and take complete ownership of the job. You just give us a date, time and a signature.

Our Qualifications In line with our commitment to delivering a quality service to our customers, we have invested in ensuring that we hold the UK and Europe's highest level qualifications in air duct cleaning.

Specifically, Pro-Duct Clean Ltd's qualifications include;

• Grade 2 approved Duct Hygiene Operators • HVCA "Green Book" Training Scheme for ductwork cleaning

We can also offer our clients training in Ductwork Cleaning Hygiene.

Pro-Duct Clean Ltd is also compliant within the Contractors Health and Safety Assessment Scheme (CHAS).



B&ES Certificate 2012/2013



• Why should Ventilation Systems be cleaned?

There is growing concern over the quality of the air we breathe, and for most of us that means a long period of time breathing air supplied to us through air conditioning systems. If you inspect any air conditioning system after three or four years you will invariably find debris somewhere in the system. It may just be a light dust build-up but it is there, and the air that you breathe passes through or over it. Add to this the worst situation of vermin decaying in the ductwork and then the added incidence of damp, and you will have the perfect scenario for the war of bacteria. Yeasts and fungi will grow and multiply and you will breathe it in. All these situations can arise over years by natural neglect i.e. filters wrongly specified or size changed, frequently missing vermin screens from intakes, badly maintained fan units causing vibration and noise, natural degradation of insulation material (used internally on some ducts) and certainly in acoustic silencers allow excess fibres to migrate into the system. All of this is just the supply system. We are frequently asked why bother we don't notice it. The legal answer comes under COSHH regulations, Euro directives and the Health and Safety Executive. It is your responsibility to ensure the health and safety of your occupiers whether workers, visitors or tenants. The simplest answer though is probably this, if I was to take a greasy plate then remove some debris from the duct and place it on the plate, then put your breakfast i.e. bacon, eggs etc. on it, would you eat it ? The answer of course would be "NO", yet every day you are quite content to breathe (or eat) the air that has passed over the same debris in the ductwork all through the year. By the same token you would not drink water supplied through a drainpipe, because you see the dirt. Every time you look at that dirty grille or diffuser, remember you are breathing in that excess dirt and you needn't! All this is just the supply side. We all carry debris with us into the building, fibres from our clothes, minute flecks of paper from our working material, dead skin that we shed all day, and many other types of contamination just in your ordinary office.



• The Effects of Neglected Ventilation Systems

This Chart shows some of the problems bacteria and viruses

associated with air conditioning systems

Whilst it is possible for the list below to be found in systems in harmful quantities it is in fact rare. However regular cleaning and sanitising will prevent this

SYMPTOMS POSSIBILITIES CAUSE TYPE CATEGORY NAME

Hayfever, Colds Asthma type

symptoms Wheezing Breathlessness Runny Nose

Severe lung and ear infections Fungi Aspergillus Cladosporium Penicillum

Inchiness on skin with special emphasis on genital area and

mouth

Severe skin and genital infections

Fungi Rhodotorula

Itchiness Sore Skin

Tendency to scratch

Dermatitus Ring worm

Scalp infections

Fungi Trichophita Microspora

Sore throat Eyes watering

Itchiness

Eye and throat infections Bacteria Streptococcus

Tenderness around wounds Pain in kidney area

And possible pain in passing urine

Urinary tract infections Severe infections in open

wounds Possibly fatal in minors

Bacteria Proteous Pseudomanas

Diarrhoea Stomach cramps Dehydration

Gastro enteritis Bacteria Coliform

Fever weakness Severe flu like symptoms

Pneumonia type infection possibly fatal

Bacteria Klebsiella Pneumonia Legionella

Fibres, smoke, dust, carbon, asbestos and many other

manmade fibres

Could cause any of the above in more minor or serious cases

No specific area, would come under general contamination

Remember under COSHH regulations you are responsible for your employees and clients



• Scope of Works & Observations

To internally clean the Existing Ventilation Duct Systems in accordance with the B&ES (Building & Engineering Services Association) formally known as the HVCA (Heating & Ventilation Contractors Association) Guide to Good Practice – Cleanliness of Ventilation Systems document TR/19, at the location of Dendron Ltd, Warehouse Air Supply Duct System Deep Cleaning and Testing. As per your requirements and brief of the system, the scope of deep cleaning required was for the existing ventilation duct systems for the warehouse. The scope of works included the air ventilation ductwork, commencing from the point where the horizontal ductwork will be separated from the vertical rising duct that lead from the top of the AHU. This was also just prior to an attenuator at the ceiling level. The deep clean continued through the entire main duct trunk and the four branches feeding off the main trunk, and terminating at the end of the Jet Nozzles. The ductwork required the installation of a number of access panels to be installed, to facilitate the cleaning process. These were fitted to the spiral duct at various points to assist in the cleaning equipment to be inserted and will allow us to clean the ductwork as thoroughly as possible. The access doors were supplied and installed in accordance with B&ES TR/19 guidelines.

Methodology The Ventilation Systems were cleaned using both air moving equipment and where it was necessary, localised vacuuming by hand, to remove all physical debris from within; Volume Control Dampers were blasted with compressed air to remove debris that may be clogging the system and then cleaned by hand. The deposits on the internal surface of the ductwork were agitated using motorised rotating brushes which were then captured by a high volume air moving unit. Access panels were installed by hand using an electric drill to initiate a starting point for electric nibblers to cut out the section of duct that the access panel will replace. The method for the deep clean of the air supply system also included a process of chemically Fogging the duct system following the cleaning process. Following this and upon completion of the clean, Swab Samples and/or V.T samples were taken.



These swabs test for Total Viable Count (TVC) microbiological and fungal growth.

Included is a sample copy of a certificate of the hygienic deep clean, with an original certificate provided once we have received payment for the work. Verification of Cleanliness Completion Report On completion of a clean taking place a report will be provided and comprise of the following: • The ventilation systems cleaned • The cleaning methods used • Verification results • Photographic support • Additional works carried out (if any) • COSHH data on any chemicals used for cleaning or biocidal treatment • Recommendations for future testing and cleaning requirements. Chemicals Used Dymaforce Odex Antibacterial Cleaner DISIFIN Tech Disinfectant Tablets



Photographs AND COMPANY

700m duct before 700m duct after

400m duct before (1) 400m duct after (1)



400m duct before (2) 400m duct after (2)

400m duct during




Access in 400m duct Access in 500m duct


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