scopeeconomics

Pumping station upgrade · Scope Economics

Lesson development

Scenario and learning design: Daniel Okeowo.

Daniel develops the learning architecture, sequence of exercises and technical and commercial decisions, informed by his construction estimating and cost-management experience.

Lesson text, calculation models and software were developed with AI assistance. Photography retains its original credits.

scopeeconomics

Lesson development

Scenario and learning design: Daniel Okeowo.

Daniel develops the learning architecture, sequence of exercises and technical and commercial decisions, informed by his construction estimating and cost-management experience.

Lesson text, calculation models and software were developed with AI assistance. Photography retains its original credits.

Exit lesson Pumping station upgrade25 min · Learn

Water & infrastructure / Westbank pumping station

Is the energy saving worth the extra capital?

The utility needs to renew two ageing pumps while keeping the station in service. Compare a like-for-like refurbishment with variable-speed replacement over 25 years.

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Equipment arrangement · Westbank pumping station

YOUR ROLE

Cost manager · Water utility

Duty: 90 L/s at 32 m
Demand: 60% full duty; 40% reduced flow
Operation: 5,000 hours/year
Requirement: 1 duty + 1 full-capacity standby
Capital ceiling: £350,000
Appraisal: 25 years

ARefurbish fixed-speed pumps

BReplace with variable-speed pumps

Brief → evidence → calculation → recommendation

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Method references and project data

Original teaching projects and cost schedules prepared for Scope Economics. Prices, operating profiles and allowances are exercise data, not supplier quotations. Apply the method using verified project inputs in practice.

US DOE · Improving Pumping System Performance ›NIST · Life-Cycle Costing Manual ›