The four samples
Each card links to the annotated page for that assignment, where two or three passages are quoted and the reasoning behind them written out.
Process Safety
Model answer
Overfill Protection in Bulk Hydrocarbon Storage: A Critical Evaluation of HAZOP and Layer of Protection Analysis
A 2,720-word MSc process safety essay that asks why structured hazard analysis failed at two sites that had it. Three annotated extracts show how to turn a method description into an argument about where the method breaks.
- Critique generated from the student's own worked HAZOP table
- Swiss-cheese model used to do work, not as decoration
- Quantitative ALARP anchors, correctly labelled as guidance
Process Control
Model answer
Temperature Control of an Exothermic Jacketed CSTR: PID Tuning, Cascade Structures and Instrumentation Selection
A 2,330-word MSc control report that compares three tuning methods by simulation and then argues that tuning constants matter less than structure and instrumentation. Three annotated extracts show how to make a comparison produce a recommendation.
- Comparison converted into a transferable decision rule
- Cascade introduced as the answer to a demonstrated weakness
- States when its own FOPDT model would not hold
Nanomaterials
Model answer
From Flask to Plant: Engineering Challenges in Scaling Up the Synthesis of Inorganic Nanoparticles
A 2,370-word MSc essay arguing that nanoparticle scale-up fails for engineering reasons, not chemical ones. Three annotated extracts show how to locate a single controlling variable and build an argument on it.
- One controlling variable identified, then everything judged against it
- Mechanism traced to the symptom the engineer actually sees
- Names a standard heuristic and scopes where it fails
Energy Engineering
Model answer
Low-Carbon Hydrogen Production Pathways: A Comparative Techno-Environmental Assessment
A 2,300-word MSc comparative assessment of blue, green and biomass-derived hydrogen that handles a live academic disagreement without ducking it. Three annotated extracts show how to weigh contested evidence.
- Handles a live academic disagreement by locating its assumptions
- Conclusions are conditional, and the conditions pick the technology
- Attacks its own comparative framing before a marker can