Optimizing metering asset operation for Eau de Paris

Saft’s innovative Meter Life Analysis service is helping the water utility serving Paris to secure the availability of its metering infrastructure.

The customer

Eau de Paris is the utility responsible for the production and distribution of water in the city of Paris. Its activities are coordinated from a water control centre and it manages a fleet of water meters operated by telemetry, which were deployed 10 years ago.

The challenge

• Get accurate determination of the remaining life of Eau de Paris’s installed base of meters, based on the actual conditions experienced by the meters in the field
• Optimize management of metering assets by implementing a conditionbased maintenance approach
   

Ensuring continuity of customer service and data retrieval

The Meter Life analysis service is based on the evaluation of health and ageing process of the meters by measuring and testing a representative sample of batteries collected from the field. Tests include:

• Analysis of the mechanical integrity of the batteries (corrosion, leakage or cracks, loss of their hermetic seal)
• Remaining battery capacity determination by Saft’s specific chemical analysis of the electrodes
• Discharged capacity and self-discharge evaluation, by using induced coupled plasma analysis of discharge compounds from electrochemical reactions
• Passivation state of the batteries assessed by complex impedance measurement
• Data analysis and evaluation of daily battery consumption based on actual field conditions

The Meter Life Analysis service enables to identity the parameters influencing the ageing process (temperature, location, humidity, type of metering device) and the possible technical solutions to optimize battery life.

Note: state of the art tests are performed by a Saft production laboratory using special test equipment with analysis of results by highly trained experts.

Saft’s vision for service

Saft has always been known for the quality of its products and technology. They are now fully supported with high quality and responsive service of battery systems. Training, installation, maintenance, fleet management and e-supervision are all included within Saft’s growing ‘Service’ portfolio.