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Projects
Below is just a small indicative sample of the many projects we have completed.
Please contact us for more details.
Robin Hood Airport
P N Daly Ltd successfully tendered for the £6.3 million utility infrastructure project to convert a former RAF airfield to an international commercial airport in February 2004. This was the first commercial airport to open in Britain in then last 30 years.
The works involved replacing two 11 kV circuits and construction of a third supplying the terminal area. In addition 7 existing substations were refurbished, 6 new substation installed and two substation - generator units were also part of the works. The total length of cable laid was 18km. Approximately 7 km of LV network was also installed.
Water main construction to the terminal and airside villages, involved the laying of 3.6 km of 250mm MDPE and Ductile Iron water main, with an additional 1.6 km of 180mm MDPE water main laid through the existing industrial estate, for use by existing and future customers. Part of these works included the construction of the airside fire fighting mains around the aircraft apron, and a 3.4 km 355mm 16 Bar HPPE fire main and 24 fire hydrants for the full length of the runway which was fed by two high pressure, high capacity fire pumps.
As part of the communications network a complete 4 way duct and pit system was constructed around the airfield to connect the control tower, fire station, terminal and ancillary equipment. All major communications for the airport were connected through this. In addition a new 4 way duct and pit system was constructed to connect the terminal to the BT network.
A new 1.6 km 400mm MDPE medium pressure gas supply was also constructed to supply gas to the terminal and future development areas of the site.
Other works on site included the diversion of the existing district heating mains, diversion of existing telecoms networks and the installation of 3 external 10,000 litre water tanks.
Works were completed in April 2005, allowing the airport to open on schedule.
The Trafford Centre
The Trafford Centre with its 1.4 million sq ft of shopping area was the biggest shopping centre in Europe and was the first major project to use the multi utility design and installation approach.
The P N Daly Ltd proposal was a multi utility solution with the underground utilities to be designed by one design team with a brief to ensure that excavation of trenches was kept to a minimum so that trenches could be shared by all utilities. The second proposal and crucial part of the proposal was that all installation teams needed to be multi-skilled.
The multi utility approach was a great success. It ensured that the problems at Meadow Hall were not repeated at the Trafford Centre, where the one point of contact provided to Bovis smoothed out problems as they arose.
P N Daly Ltd won the Bovis Site Safety Award.
The City of Manchester Stadium
The City of Manchester Stadium was a high profile and very prestigious contract, which was very much in the public eye as it had to be ready for the Commonwealth Games and there was no room for error.
The same approach was adopted here as for the Trafford Centre and it worked very well with all deadlines being met.
The work itself consisted of:-
2.0km HV ring with 4 subs from the UU primary
2.0km 3 separate ducting systems each consisting of 4-way duct with 25 chambers
1.5km 300mm DI in contaminated land
1.5km 250/315mm MDPE gas
A notable feature of the work was the under slinging under a special canal bridge of 12-way ducting for electric cables, BT and internal comms and gas and water pipes.
This involved the use of a specially adapted cherry picker to provide the necessary flexibility to allow under bridge working.
The Printworks
This work consisted of the installation of 5 x 1000kva transformers, 5 x 6.6kv ring main units, and 5 x lv distribution boards.
All of the above equipment was sited in a basement sub-station. Due to operational difficulties on Long and Crawford hv RMU's - it was decided to use also Merlin Gerin RMU's in the system. Therefore 3 x Long and Crawford and 2 x Merlin Gerin RMU's were used. Due to the different manufacturers of the RMU's being used, all of the hv interconnector cables had to be taken outside the building and jointed in the highway. The transformers were linked to the lv boards by clusters of 7 x 400mm singles cables on overhead containment. All of the containment, cables and terminations were carried out by P.N. Daly Ltd.
The transformers were linked to the RMU's by the installation of 5 x 95mm Accas cables on overhead containment, all installed and terminated by P.N. Daly Ltd. From the lv distribution boards - a mixture of 95mm, 185mm and 300mm lv cables were installed on containment installed by others, and were used to feed MOD 156 fuse units in group meter rooms. All MOD 156 units and terminations were by P.N. Daly Ltd.
The whole of the sub-station was pressure tested and commissioned by P.N. Daly Ltd.