Question 5 of 7: Environmental Ethics and Energy Use

Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.

Part (i) — Three violations of the stated ethical principles (10 marks)

The scenario is a lightly disguised account of the Goodrich A7-D brake case, and it is a useful teaching example precisely because the misconduct was not a single dramatic act but a chain of ordinary decisions, each of which seemed defensible to the person taking it. Three distinct violations can be identified.

Violation 1 — falsifying the qualification test, in breach of principle (a). The managers did not simply fail a test; they altered the test so that a brake which could not meet the specification would appear to. Cooling the brakes between runs and remachining the friction surfaces removed exactly the conditions the qualification test exists to reproduce — the repeated, cumulative, high-energy stops of real service, during which heat builds up and the friction material degrades. A brake that passes only when it is allowed to cool and be rebuilt between stops has not been shown to work; it has been shown to work in circumstances that will never occur on an aircraft carrier deck. The consequence of that misrepresentation falls directly on the pilot, the deck crew and ultimately the public who fund and depend on the aircraft, so this is a violation of the paramountcy principle in its most direct form. Paramountcy means that when public safety conflicts with schedule, contract or reputation, safety wins — not that safety is one consideration to be balanced against the others. The managers inverted that ranking.

Violation 2 — misrepresenting results to the client, in breach of principle (b). It is tempting to read “faithful agent” as an obligation of loyalty that might have justified protecting the company, and that misreading is the heart of the case. Acting as a faithful agent means serving the client's genuine interests honestly, not concealing information the client needs. The client here — the air force — had contracted for a brake that met a stated specification and was entitled to a truthful report of whether it did. Submitting a qualification report based on manipulated tests deceived the client, exposed the employer itself to catastrophic contractual, financial and criminal liability, and destroyed the trust on which the relationship depended. The managers were therefore unfaithful agents of both the client and the employer at the same time. Confidentiality, likewise, protects an employer's legitimate proprietary information; it has never extended to concealing a danger to the public, and invoking it for that purpose is an abuse of the principle rather than an application of it.

Violation 3 — suppressing the internal report and failing to disclose, in breach of principle (c). The engineers who conducted the tests knew the brake was failing and said so; the managers' response was to direct that the qualification report be written anyway and to discourage the concern from travelling upward. Principle (c) imposes a positive duty — not merely to refrain from lying, but to report practices that endanger the public. Directing subordinates to produce a report they knew to be false compounds the failure, because it converts a personal breach into an organisational one and places junior engineers in an impossible position between their employment and their professional obligation. Principle (c) also supplies the correct course of action that was available and was not taken: raise the concern in writing through the internal chain of command; if it is not resolved, escalate to the regulator and the client; and, where a significant risk to the public remains unresolved, the engineer may ethically make the concerns known publicly. In Canada that path is reinforced by statute — the professional engineering acts of every province make it professional misconduct to fail to report a situation the practitioner believes may endanger public safety, and provide protection against reprisal for doing so.

Taken together, the three violations describe the standard anatomy of an engineering ethics failure: a technical shortfall, followed by pressure to conceal it, followed by the silencing of the people who knew. The remedy in every one of these cases lies earlier than the crisis — in reporting the failed test honestly at the moment it failed, when the cost was a schedule slip and a redesign rather than a falsified certification and a hazard placed in service.

Part (ii) — Three pollution types affecting climate change and their engineering solutions (10 marks)

Rising population and energy demand in developing economies increase fuel combustion, and combustion releases several distinct classes of climate-active pollutant. Three are discussed below, each with a matched engineering solution — one hard, one soft-and-hard combined, and one predominantly soft — as the question requires a different solution for each type.

Pollution type 1 — carbon dioxide from fossil fuel combustion (long-lived greenhouse gas). Carbon dioxide is the dominant anthropogenic forcing agent, contributing roughly three-quarters of the greenhouse effect from human activity, and it is distinguished by an atmospheric residence time measured in centuries, so emissions today commit the climate system for generations. It arises wherever coal, oil, natural gas or biomass is burned for electricity, industry, transport or cooking. Engineering solution (hard): displace unabated fossil generation with renewable and low-carbon supply — utility-scale solar and wind paired with battery storage, small hydro, and geothermal where the resource exists — supported by transmission interconnection and demand-side management to handle intermittency; and where combustion cannot be avoided, as in cement and steel, apply post-combustion carbon capture with amine absorption and geological storage in deep saline formations. In developing economies the most cost-effective form of this is often distributed rather than central: solar mini-grids serve dispersed rural populations at lower cost than extending a national grid, and they leapfrog the fossil-generation phase entirely.

Pollution type 2 — methane from waste, agriculture and fossil-fuel systems (short-lived climate forcer). Methane has a global warming potential of about 28 to 30 times that of carbon dioxide over a hundred years, and around 80 times over twenty years, but an atmospheric lifetime of only about a decade — which makes its abatement the fastest available lever on near-term warming. Its principal sources are anaerobic decomposition in landfills, enteric fermentation in livestock, flooded rice cultivation, and fugitive losses from gas production and distribution. Engineering solution (hard and soft combined): capture and use the gas rather than vent it. On the hard side, install landfill gas collection wells with a header system and either flare the gas or, better, clean and use it in a reciprocating engine or upgrade it to renewable natural gas; divert organics to anaerobic digesters that produce biogas as a designed product rather than as a fugitive loss; and conduct systematic leak detection and repair on gas infrastructure using optical gas imaging and satellite monitoring. On the soft side, source-separated organics collection programmes, landfill bans on organic waste, and regulated leak-detection requirements are what make the hard measures happen at scale — a digester is only viable if a clean organic feedstock is delivered to it.

Pollution type 3 — black carbon and particulate aerosols from incomplete combustion (short-lived forcer with regional effects). Black carbon — soot — is produced by inefficient combustion of solid fuels: traditional biomass cookstoves, kerosene lamps, diesel engines without particulate filters, crop-residue and open waste burning, and brick kilns. It warms directly by absorbing solar radiation in the atmosphere, and it warms indirectly and powerfully when deposited on snow and ice, where it darkens the surface, lowers albedo and accelerates melting — an effect of particular consequence for Arctic sea ice and Himalayan glaciers, and one of direct concern to Canada as an Arctic nation. Its atmospheric lifetime is only days to weeks, so reductions produce climate benefit almost immediately, and because the same particles cause severe respiratory and cardiovascular disease, control delivers a large public-health co-benefit. Engineering solution (predominantly soft, with hard components): displace open biomass burning with clean cooking — improved forced-draft gasifier stoves, LPG and electric induction cooking, and biogas from household digesters — delivered through the soft measures that actually determine adoption: microfinance and results-based subsidy for stove purchase, distribution networks, user training, and product standards with testing to prevent poor-quality stoves discrediting the programme. The hard complements are diesel particulate filters and fuel-sulfur standards for vehicles, and conversion of traditional brick kilns to zigzag or vertical-shaft designs that cut both fuel use and soot sharply.

Two general points close the answer. The distinction between hard and soft engineering matters because hard solutions — physical plant, capture systems, filters — are necessary but rarely sufficient; without the soft measures of pricing, regulation, standards, financing, training and maintenance capacity, installed hardware in low-resource settings tends to fail within a few years. And the three pollutant types call for different strategic emphasis: carbon dioxide abatement determines the eventual equilibrium temperature and must be pursued regardless of how slowly it pays, whereas methane and black carbon abatement determines the rate of near-term warming and buys time, which is why the most defensible programme pursues both timescales simultaneously rather than choosing between them.