Our Work
Our team work tirelessly to produce industry-leading results for our clients. Take a look at some of our recent projects below.
Liquid Return Improvement
Location: Basingstoke
Project Duration: 8 months
Project Cost: £131,500
The Project
This project was to separate the THP & Belt press liquors to enable the weaker to be returned directly to the head of the works leaving more capacity in the buffer tank for stronger liquors before being treated via LTP.
The scope was to provide a new pump set (duty/standby) to feed LTP from buffer tank (20m3/hr – 60m3/hr) with all pipework, tank connections and lagging with all associated Civils work.
We provided all electrical works including the design & manufacturer of the pump LCPs and all associated cabling, relocation and cabling of current process instruments and the installation of new with full integration onto the relevant site PLC and SCADA systems including commissioning.
The Solution
We carried out the full electrical design including the LCP’s, power distribution with all control and instrumentation design, installation, and commissioning along with managing the systems integration carried out by a subcontractor.
Expertise
• Full design of the required electrical, control and instrumentation elements.
• Management of the project from design through to installation, commissioning, and site acceptance testing.
• All elements of design with documentation produced and issued to the client.
MCC Replacement & Pump Control Modifications
Location: Clavering
Project Duration: 6 months
Project Cost: £90,000
The Project
We were tasked to supply and install a new Motor Control Centre (MCC) complete with new Ultrasonic pump control in a wet well consisting of 3 submersible pumps on Duty, Assist, Standby and starters for a re-circulation and liquor returns pump. With back up float control should the primary level measurement fail. These were previously controlled by multiple legacy separate control panels.
The Solution
Before the work started, we:
- Carried out a detailed site survey to ascertain power requirements on site to provide suitable scope to approved MCC suppliers to design a suitable MCC for control of the submersible pumps and re-circulation & liquor Returns pump.
- Completed a Full electrical design, complete with cable calculations, SLDs, BCDs and CCDs
- Managed communications between all sub-contractors and the client to confirm all requirements are met prior to construction.
- Managed Civils contractor to facilitate the installation of new ducts to rout new cabling.
- Completed the design, build and supply of local isolator and marshalling panels (LIMBS)
- Supplied and installed all containment with suitable segregation between bands of cables.
- Maintained all existing Telemetry signals to existing outstation and confirm all signals upon completion of commissioning.
We were appointed as the Principal Designer and Principal Contractor under CDM for this project and ensured the utmost care went into each stage of planning, from design to implementation.
We ensured careful and planned coordination with site process requirements, shutdowns and communication with the WOCC, facilitated minimal downtime of the site process, resulting in no uncontrolled discharges or consent failures. This culminated in the successful and safe completion of the project allowing a more robust site.
We engaged with Thames Water regularly throughout the life cycle of the project, building strong relationships that ensured the project’s success. From inception to design stage and throughout installation to commissioning we have engaged with the Client to ensure all their requirements were met.
Expertise
- MCC Replacement & Management
- Electrical & CompEx Electrical Works
- Small Panel Manufacturing
- Ultrasonic & Back Up Control
Lighting Upgrade
Location: Hogsmill
Project Duration: 3 months
Project Cost: £50,000
The Project
LOS Electrical Engineers were tasked to carry out the design, installation & test of new lighting, including emergency, providing replacement Tunnel Drainage Pump LIMBs, replacement of corroded brackets for the fibre optic cable ducts, improvement to the earthing system & removal of redundant equipment.
This was carried out in the 40mt deep Thames Water Ring Main Shaft at Hogsmill.
• LOS Electrical Engineers carried out an initial site survey to ascertain the condition of the existing lighting installation, Shaft Drainage Pumps, shaft sump pumps, earthing & fibre optic ducts support brackets
• All operatives had to be confined space trained & physically fit to be able to deal with climbing up & down the ladders & twelve levels, between the ground & the shaft basement
• Carry out removal & safe disposal of all the redundant lighting & cabling
• Design & install suitable standard & emergency lighting, via local junction boxes on each of the twelve levels
• Install replacement earthing system, within the shaft, to bond the metal platforms, ladders & pumps
• Removal of corroded brackets & installation of replacement stainless steel brackets for the fibre optic cable ducts, running top to bottom of the shaft
• Replacement of corroded fixings on the GRP containment that runs top to bottom, using stainless steel fixings
• Provide stainless steel tyraps to secure all cables to the GRP containment
• Provide electrical design, complete with cable calculations, SLDs, BCDs, and CCDs
• Design, build, and supply replacement local isolator and marshalling panels (LIMBS) for the tunnel drainage pumps
The Solution
LOS Electrical Engineers were appointed as Sub-Contractor (under CDM) for Gel Engineering for this project. They ensured the utmost care went into each planning stage, from design to implementation. LOS Electrical Engineers liaised & worked with the client & other sub-contractors at all stages during the installation to minimise disruption to the programme, due to the restrictions & space, accessing & working in the shaft. This culminated in the successful and safe completion of the project.
Expertise
• Full replacement & rewiring of the shaft lighting
• Replacement of the shaft earthing system
• Working in Confined Space (40mt deep shaft)
• Manufacture & install new Tunnel Drainage Pump LIMBS
LV Switchboard ACB Upgrade
Location: Lowestoft
Project Duration: 8 months
Project Cost: £14,350
The Project
Our customer had invested in a PV Array System, to allow connection of PV Array, the existing Main LV Distribution Board required a power shutdown. Our Engineers were approached to give advice on switching/isolation of the existing ACB. The existing GEC MPact, TP, withdrawable, 1600A ACB was obsolete, not serviced, and unsuitable for switching, leaving the customer no way of isolating their Main LV Distribution Board.
We recommended a retro-fit solution to replace the ACB with a new Schneider MTZ1-08 ACB.
We out a non-intrusive survey to ascertain technical requirements of retro fitting new ACB into the existing ACB space. As the power supply was critical to other end users, the power outage had to be kept to a minimum (max 48 hours) shutting down on a Friday evening, carrying out retrofit, energizing power Sunday evening.
The Solution
• All materials purchased and stocked prior to agreed power shutdown.
• Power shut down: Friday evening, existing ACB opened and racked out, moving portion taken to LOS workshop to be stripped and retro-fitted with new withdrawable Schneider MTZ1-08 ACB.
• Advantage of above retrofit into existing moving portion are time saving/no switchboard modification required.
• IR/Dielectric test carried out before returning new ACB to site.
• ACB returned to site, racked into existing chassis, an insulation test carried out on switchboard bus bars, new ACB closed, all power supplies restored leaving 6 hours spare.
Expertise
• Air Circuit Breaker (ACB) Replacement & Management
• LV Switchboard Electrical Works
• Component retrofit solutions
