Water and Effluent Treatment Magazine
Issue link: https://fhpublishing.uberflip.com/i/437549
14 WET NEWS january 2015 Early planning is key More than 95% of the kiosk build was completed at Technocover's factory under ISO 9000 quality management, shaving five days off the construction programme • Offsite manufacture of ultraSecure kiosks halves their installation time on Wessex Water›s water supply grid scheme. TEchkNoW • The ultraSecure kiosks are fully insulated and fitted with plywood lining from a range of internal finish options, including engineered plastic linings in recycled HDPE • The personnel kiosks included two at a finished size of 4.5m by 2.5m by 2.5m high and one measuring 5.2m by 5.2m by 2.5m high. • The sampling kiosk for the final site was smaller and lighter • Electrics were installed and tested, terminating in each half for simple plug together connection NEED To kNoW 1 up to five days programme time saved 2 Kiosks pre-built and pre-fitted with electrical and H&V services, tested and certificated under factory controlled conditions 3 Site delivery, lifting equipment, installation and compliance documentation undertaken by supplier in line with all relevant regulations 4 access and space constraints at other sites ruled out the deployment of a crane 5 Early consultation was a vital starting point, and included site visits and planning meetings E arly supplier involvement and use of pre-fitted security kiosks has delivered pro- gramme benefits in the upgrade of pumping stations on Wessex Water's integrated water supply grid. The £230M Water Supply Grid, Wessex Water's largest mains water project to date, will improve security of water supply to cus- tomers and increase network resilience to flooding and other emergency events. The eight-year scheme com- menced in 2010 and includes con- structing more than 150km of trunk mains, 14 new service reser- voirs and 22 new or refurbished pumping stations across Somer- set, Wiltshire and Dorset. It will join up a significant part of the Wessex network from the north of Bournemouth, via Salisbury, to Bath. The grid's engineering design, planning and environ- mental services are being under- taken by WECS, Atkins and AECOM. Physical protection of water infrastructure plays a major role in the security of supply. Unau- thorised access to water facilities or criminal attack on processes and reserves could potentially cause severe disruption to opera- tions and continuity of service. In line with security provision across all Wessex Water assets, the grid project team and its delivery part- ners are implementing stringent levels of physical protection to safeguard the new facilities. This led to a requirement for several LPCB-approved, high security fabricated steel kiosks at three pumping station sites between Cattistock and Chetnole in Dorset. For Wessex Water's PRoJEcT SPEcS • Construct and install three personnel kiosks fully-fitted with M&E services • Construct and install a fourth, smaller kiosk designed for sampling equipment • The kiosks must be to the appropri- ate LPCB security rating ThE VERDIcT "removal of the existing structure and installation of the two new kiosks was completed in one day where we had allowed a day for each" jamie Elliott, Trant Engineering ONSITE SECurITy appointed contractor, Trant Engi- neering, it presented a number of challenges. With the footprint of the largest kiosk covering some 25m2, the buildability of adopted solutions required careful consid- eration in order to overcome diffi- cult site logistics while minimis- ing installation time. Trant turned to Technocover for a solution based on its compre- hensive product choice and site services in LPCB-approved* kiosks. The project specification detailed the need for three person- nel kiosks fully fitted with M&E services, and a fourth, smaller kiosk designed for sampling equipment, all to the appropriate LPCB security rating. The person- nel kiosks included two at a fin- ished size of 4.5m by 2.5m by 2.5m high and one measuring 5.2m by 5.2m by 2.5m high. Having initially considered the more usual approach of assembling the kiosks and installing services on site, Trant and Technocover dis- cussed the benefits of maximising the offsite element of the build. With its specialised delivery fleet and large-scale fabrication capabilities, Technocover was able to conceive production, deliv- ery and installation of three of the kiosks fully assembled and fitted. The largest, weighing in excess of 4.6 tonnes, was planned for site assembly in two halves; each of these would also be fully factory fitted following careful planning of fixtures and services. This kept equipment outside the criteria of a special load requiring police escort, avoiding the associated costs and logistical complications. By maximising off- site work and with painstaking planning of logistics, site access Painstaking planning together with precision manufacture and assembly ensures the two-part kiosk slots perfectly together first time Early planning is key