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Project Summary

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Lean Project Description

Lean Project Summary

Cost effective innovative solution for installing Surge Protection Devices (SPD) Units in Columns and feeder pillars.
Initial installation method would be a time consuming exercise requiring the entire circuit to be tested to BS7671 prior to the works and post installation with the need to remove the existing cut out and install a new cut out.
Through value stream mapping identified area to focus improvement and worked with Tofco and Mersen, to find a SPD unit that can be installed concurrently with the new lantern tails in about five minutes.

Lean Project Benefits Summary

Saving Time and Resource and eliminated the need for BS7671 testing, as we are not interfering with the existing circuit.

Roads Period Efficiency Reported

Efficiency Value Assured

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Lean Construction Development Programme (LCDP) Project

NoYes

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Problem Solving Strategy (DMAICT)

Define

SPD (Surge Protection Device) units in The road map stated that SPD units were required in all columns and this was then extended to all feeder pillars, although no direction was given as to if the units should be wired in parallel or in series.  The simple solution that was initially accepted was to replace the whole existing cutout with a new cut out that had a SPD incorporated within the cut out.
It was noted that the installation would be a time consuming exercise as in addition to requiring the entire circuit to be tested to BS7671 prior to the works and post installation there was the need to remove the existing cut out and install a new cut out.

Measure

It worked out that under the current process we would only achieve 10 a night with 1x electrician.

Analyse

Working with Tofco and Mersen, we found a SPD unit that can be installed concurrently with the new lantern tails in about five minutes.

Improve

We had extended tails added for greater installation flexibility within the columns, and the unit is fixed to the backboard with a standard wood screw. The unit costs 50% less than the new cut-out option, and the installation time is much quicker. Additionally, it eliminates the need for BS7671 testing, as we are not interfering with the existing circuit, saving time and TM since testing must be completed before work starts.

Control

By using the new SPD unit from Tofco and Mersen, the installation process can be improved significantly. This alternative solution is more efficient, cost-effective, and does not disrupt the existing circuit, saving time and resources.

Transfer

We have shared detail what we have done with other contractors in different regions, who are now considering adopting this new approach.

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Other Project Benefits

Meeting the needs of all users

Meeting the needs of all users - Other

Improving safety, health & wellbeing for all

Improving safety, health & wellbeing for all-Other

Delivering better environmental outcomes

Delivering better environmental outcomes - Other

Sustain a well-maintained and resilient network

Sustain well-maintained & resilient network- Other

Providing fast and reliable journeys

Providing fast and reliable journeys - Other

Achieve efficient delivery

Achieve efficient delivery - Other

Project Detail

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Was a Departure Required?

NoYes

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