CASE STUDIES
The brand-newequipment provided by C J Kelly International Ltd and Picote Solutions.
Renovating vital ducting at a Cancer Treatment Centre
As part of an upgrade of cancer treatment equipment at a UK Hospital for client The NHS (National Health Service), comprising the installation of a newlinear accelerator used for radiotherapy treatment, buried ductingwhich is used to carry vital cabling for the newunitwas inspected and found to be subject to groundwater infiltration and condensation.
Given that the cabling that the ducting is used to carry costs something around £70,000 for 25 m(£2,800/m), itwas decided that the ducts needed to either be replaced or rehabilitated to ensure that they remainedwater- and air- tight over the life expectancy of the Radiotherapy unit. The former optionwas discounted due to the location of the ducts within and beneath the hospital building as thiswould have caused significant disruption and inconvenience to both the operation of the hospital and its patients. So, a renovation solutionwas investigated to rehabilitate the four 20mlong, 100mmdiameter ducts.
Metro Rod HLP (Hull, Lincolnshire & Peterborough)was contracted to complete the works,whichwould turn out not to be a simple, straightforward renovation operation.
Given the nature of the equipment involved and the location of the ductswithin the building and the ongoing Covid emergency, the renovation operation had to be carried out using strict hygiene controlmethods.
Initialworks involved the CCTV inspection of the four ducts to establish the current state of
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repair so that a long-termsolution could be planned for the renovation. The CCTV survey showed thatwhist two of the ductswere clear of obstruction, the other two had concrete deposits locatedwithin the duct runwhich would need to be removed before lining could take place.
To achieve this end,Metro Rod discussed optionswith and ultimately brought into the operation C J Kelly International Ltd (CJK) and Picote Solutions in a joint venture to provide the necessary equipment to complete the works onwhatwas to become a high-profile job.
Again, given the location in themiddle of the hospital building and the need for highest hygiene standards given the delicate nature of the incoming cancer treatment equipment, CJK and Picote loaned brand-new, previously unused equipment toMetro Rod so that no cross-contamination fromprevious sites could be possible. This included a brush cleaning systemand a concrete removal tool from Picotewhichwas designed toworkwith one of the company’sMaxiMiller units,with lining materials being provided in addition by CJK. The projectwas scheduled to run for just four days, again tominimise the impact of the works on the hospital site.
RENOVATIONSCHEDULE
On the first day of theworks, theMaxiMiller with the concrete removal toolwas used to first clear the concrete fromthe ducts in
| June 2021 |
www.draintraderltd.com
Duct accesswas limitedwith no manhole available
question over the course of a single 16-hour shift. This left just three days to clean the now concrete-free ducts and the remining two ducts and line themwith 100mmdiameter Brawoliners, provided by CJK.
The projectwas so high profile for the client that both Spencer Horsfield (Company Director) and Robert Forsyth (Technical Manager) the twomost experienced lining personnel in this division ofMetrorod, undertook theworks personally. Cleaning works did not have access to amanhole, so cleaning spoils had to removed just fromthe pipe access end. The duct runs themselves had a round configurationwith each startingwith a
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