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Tuesday, 22 October

A New Way At Old Admiralty

DustContrl and Speedy Hire

Dustcontrol UK and Speedy Hire have combined to help Willmott Dixon refurbish the Old Admiralty Building (OAB) in Horseguards Parade, central London, an undertaking that will see the Grade II listed building transformed into a modern working environment.

At present, it’s Willmott Dixon’s biggest project and is a joint venture between two of the firm’s independent arms, Willmott Dixon Interiors and Willmott Dixon Construction, which have come together to form Team OAB – a partnership specific to the Old Admiralty project.

The project has some unusual challenges, both in relation to the materials contained within the building and the requirements of the new fitout itself, which is spread across over 600 rooms, presenting some significant potential health and safety issues, many of which are dust related.

 

Silicosis

Silica dust, found in many common construction materials, presents the risk of silicosis, which is a serious lung disease caused through the inhalation of Respirable Crystalline Silica; dust particles invisible to the naked eye created through activities such as drilling, sanding, coring and grinding. It’s not just silica that poses a hazard. Asbestos is present throughout the building, while horsehair is in the lime plaster that’s being reinstated presents a very minimal risk of Anthrax.

The multitude of dust related hazards means efficient dust control is essential.

Looking for the a solution, Willmott Dixon turned to hire provider Speedy Services for its input who recommended supply chain partner is Dustcontrol UK, a specialist in providing dust extraction solutions with all its products built to application class H as standard. This means the equipment it provides offers the highest levels of filtration possible. The minimum standard required by law is M class, but the use of H class promotes best practice.

All Dustcontrol machines are cyclone based with a pre-filter, a setup which meets M class requirements on its own. However, the inclusion of an H-13 HEPA filter ensures the capture of 99.97% of all particles greater than 0.3 microns, meaning air exhausted is the cleanest it can be.

 

Sectioned off

Dustcontrol also devised a setup that saw the sectioning off of a specific room and the setting up of a mixing and cutting station, keeping dust in one place on site and avoiding its spread.

Following a site survey, it was determined that dust extraction equipment would need to be in place on site 24/7 to combat the dust created by plasterers and floorers mixing dry powders; one of the main causes of dust on a construction site.

The first solution suggested by Dustcontrol was a DC Tromb 400 – its most powerful extractor to date. A short hose was then used to attach the Tromb to a pre-separator, which collects up to 90% of all heavy materials. This keeps dust off the filter in the Tromb, meaning only 10% of the very finest dust reaches the Tromb itself. With the project set to last many months, the pre-separator helps to prolong the lifespan of the Tromb filter, reducing the need for maintenance or the risk of breakdown through overuse. A Y piece can also be added to the Tromb to enable extraction from two power tools at the same time.

Dustcontrol then recommended the use of a DC2900 to combat dust created by tipping plaster. The DC2900 was used in combination with a hook that sits inside the rim of a bucket and serves to create a vortex that prevents dust escaping, stopping it getting airborne in the first instance.

The combination of the DC Tromb, pre-separator and DC2900, means dust in the room is kept to an absolute minimum and well below the requisite safety levels.

An Aircube 2000 was also installed within the room. The Aircube range are ambient air cleaners, which run all day long on site, ensuring that any dust particles that do escape are picked up by the Aircube 2000 in situ. This further restricts dust migration, stopping it moving into other areas of the site and ensuring a clean, healthy working environment.

 

Vacs

The extraction units such as the Tromb and DC2900 can also be used as vacuum cleaners, allowing for their use to clean other areas on the site, as well as in the designated stations. This also removes the need for brooms, which disturb dust during cleaning, putting respirable dusts back into the local atmosphere.

 

Picture: Given the size of the Old Admiralty Building, this solution has been extended to cover 6 floors, meaning there is a specific room designated for dust generating activities on each floor. This is set to extend to 10 rooms over the next few months.

Article written by Cathryn Ellis

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