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FIGURE 9 REPOSITIONED GAS RECEPTION KIOSKS AND ABOVE GROUND STEEL GAS PIPE ROUTE FIGURE 11 NEW FILTERS REPLACED ON BOTH STREAMS

FIGURE 12 COMPLETE 110 MWHT GAS CONNECTION CURRENTLY DELIVERING 40MW OF ELECTRICITY
TO THE GRID
FIGURE 10 INSTALLED RECALIBRATED EXISTING FILTER ON A STREAM AT DERWENT

Gas route The installation of 90m of required to meet the CM15 deadline. To overall timescale. The new filters were
HDPE IP was proposed on the access achieve this, the project was split into later installed with no impact to gas
road. The drainage chambers cut phases 1 and 2. flow as shown in Figure 11.
across the access road and introduced a) Phase 1: 110 MWht gas load capacity 5. Extra man hours: I further reduced
a potential risk to any possible to generate 40MW of electricity. the lead time by engaging the onsite
excavation, which would affect the b) Phase 2: Full gas load capacity of workers on extra working hours and
integrity of the road. 600MWth to generate 200MW of weekend working with appropriate
electricity. supervision.
Solutions As shown in Figure 9, I had 2. Hiring of PRS and pre-heater module:
to reposition the gas reception kiosk I had to hire a containerised pre- Conclusions
eliminating the installation of the heater model and PRS from the Ultimately, the project was successfully
90m of HDPE IP gas pipe which had Netherlands. Figure 8 shows a delivered in only eight months – a third
been proposed. schematic of the gas pressure flow. of the scheduled time. This was a great
As a result of the trial holes, 60 per 3. Acceleration of manufacturing time: achievement and one of which I am
cent of the HDPE was replaced with I went ahead of the supply chain to proud. Figure 12 shows the complete
above ground steel gas pipe. The cost for accelerate manufacturing time for the and operational 40MWe Derwent site.
above ground steel gas pipe was offset by long lead items i.e., ultrasonic meter,
the recovered cost of the 90m of HDPE. valves, etc. Future optimisation
This had a further reduction on Although it requires additional heating,
Lead time timescales. replacing the J-T valve used in the
At inception, I was tasked to accelerate 4. Recalibration of an existing filter: project with a turbo expander has a
the 24 months lead time to deliver 600 Given that the filter manufacturing potential to recover electric energy
MWht of gas (200MW of electricity) lead time could not be accelerated, generated during the pressure reduction.
secured from Cadent. I suggested that an existing filter be The waste heat from the reciprocating
These are strategic decisions I recalibrated and installed, as shown in engines can be recovered to
deployed to achieve it: Figure 10. compensate for the additional heating
This was an interim solution prior requirement for turbo expanders.
Solutions to the availability of the appropriate Optimising the site will create
1. Delivery of the project in phases: filters. This was successfully carried significant fuel cost savings for the
40MW of electricity (110MWth gas) was out and had a significant impact on the lifecycle of the project.

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