Business challenges230,000 cubic meters of water are extracted from Rutland Water daily, so an equal amount has to be extracted from the feeding rivers. Rutland Water is refilled from local rivers, the River Nene and the River Welland, using automated abstraction methods.

Like all water companies Anglian Water is under increasing pressure to operate as efficiently as possible; alongside commercial pressures there

are important environmental issues influencing the way it operates. Water is no longer a commodity that can be taken for granted and operations

need to adapt to reflect this. The old automated abstraction systems on these two feeding rivers were dated and unable to provide the flexible and

efficiency required by Anglian Water. To comply with regulatory requirements, achieve flexibility and improved abstraction efficiency Anglian

Water decided to invest in a new control system for both rivers.

How we helpedCapula was selected by Anglian Water to supply, install and commission

a new control system to manage the extraction of water from the two

rivers feeding Rutland Water.

The new system not only provides improved extraction efficiency, it

also offers greater flexibility in the volume and frequency of abstraction,

enabling Anglian Water to operate in a more environmentally sensitive

way. Included in the project were 4 pumping/abstraction stations and

a reservoir level control.

Each pumping station has between 5 and 11 large pumps with both

fixed speed and variable speed in duty/ standby and assist modes.

The 4 stations, reservoir and main treatment works are linked via

telemetry units to provide complete control of the water abstraction,

delivery, reserve and quality.

The control system was supplied in two phases. Phase one included

the supply and installation of hardware and software to control the

original pumping scheme, replacing the original MM2 outstations with

MM4 outstations and ControlLogix PLCs.

Anglian Water Services LtdCritical Refill Control System Rutland Water

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Anglian Water Services

Anglian Water is one of the leading

providers of water and wastewater

services in the UK.

The company is located in the east

of England and serves the needs

of around six million industrial,

commercial and domestic customers.

Geographically it is the largest water

company in England and Wales,

serving 2.6 million properties across

East Anglia and the East Midlands.

Its region, some 27,500 square

kilometres, stretches from the

Humber in the north to the Thames

in the south, from Daventry in the

west across to the east coast.

Rutland Water is one of the largest

artificial lakes in Europe and was

constructed in 1976 to supply water

to one of the driest and most densely

populated areas in the UK.

It is located in Rutland, England’s

smallest county.

Phase two provided the additional software to control one new, smaller duty, variable speed pump

at each of the four locations. Energy saving control enhancements were also implemented during

the second phase.

The pumping systems are controlled via PLCs and supervised by the SCADA system. Flow, level,

pressure and quality transmitters give a continuous indication at the HMI and the offsite SCADA.

The pumping regime includes complex demand and flow calculations, safety shut down system,

trim adjustments, level control, an energy saving scheme and full PID speed control. The outstations

monitor alarms, flow integration, pump starting and abstraction rates.

All alarm conditions are displayed at the onsite HMI and the offsite SCADA system with critical

alarms transmitted via telemetry. The status of all main network valves within the pump house

are also displayed at the HMI/SCADA. All analogue input signals are scaled into appropriate

engineering units.

Why Capula?Capula is a leading independent provider of advanced automation and real-time business

intelligence in UK water industry, with a reputation of being able to deliver even the most complex

and demanding projects.

Under a framework agreement Capula had already successfully delivered a number of automation

projects for Anglian Water and because of this proven capability and market knowledge, Capula

was again chosen to deliver this business and time critical refill control system.

Capula Limited Orion House, Stone, Staffordshire ST15 OLT

t: +44 (0)1785 827000 e: sales@capula.co.uk

www.capula.co.uk

. . .

ADSL Router

ADSL RouterADSL

Router

ADSL Router

RSViewSCADA

Ethernet

HMIHMI

Pumping Station 1 PLCPumping Station Relift Pumps PLC

Pumping Station River Abs Pumps PLC

Pumping Station PLC

Control Room

HMI

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