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BSafe Case Study 30 — The CO2 System Was Meant to Save Them. The Wire Had Parted.

🕑 5 min read words Safety • Incident

Vessel: Self-unloading bulk carrier, built 1943 as a steamship, later converted to diesel
Date & location: Engine room, northbound on Lake Erie off Kingsville, Ontario
Outcome: No injuries or pollution; extensive engine room damage
Human factors: Deferred Maintenance Normalised · A Fixed Suppression System That Failed to Activate · A Crew Member Who Missed the Alarm
Source: Britannia P&I Club, BSafe Incident Case Study No. 30 — Engine room fire on a bulk carrier on Lake Erie

1 real case studyPublished 2026~5 min read

An Old Ship's Real Limitations

Built in 1943, the ship predated many safety features now mandatory: the main engine couldn't be stopped from the bridge, only locally or by closing fuel valves. Fuel supply lines had no spray shielding against a containment failure. Small fuel leaks on the supply and return lines were considered routine, temporarily fixed as they appeared without deeper investigation of why they kept happening. The engine room skylight, opened for ventilation along with some portholes and fire doors secured open, could only be closed via a remote winch control located inside the engine control room itself — or manually, from inside the space.

Flames, a Missed Alarm, and a System That Didn't Fire

At 2159, flames were spotted at the top of the main engine during routine rounds. The duty engineer couldn't reach the control room through the flames and heat, evacuated, and manually raised the alarm. Crew mustered — except the second engineer, who had slept through it. The emergency generator started, ventilation fans stopped, and by 2209 the chief engineer activated the quick-closing fuel valves and started the emergency fire pump. The skylight and some portholes remained open — heat and smoke made manual closure impossible, and the remote control sat unreachable inside the engine room itself.

The master ordered the fixed CO2 system activated as the primary means of fighting the fire. It failed to operate as designed — the release wires had parted, never opening the gas cylinders. A local release attempt from inside the CO2 room itself followed; as the room began filling with CO2, the chief engineer had to evacuate before completing it. Separately, the emergency fire pump was confirmed running with good discharge pressure — but no water was reaching the fire main, and initial troubleshooting couldn't identify why. The engine stopped at 2217; anchors were dropped. By 2231 smoke was visibly reducing, and by 2328, none was observed.

What This Illustrates

Small fuel leaks treated as routine, repeatedly patched rather than investigated, are exactly the kind of normalised deviation that can seed a larger fire.
A remote CO2 release mechanism is only as reliable as its physical release wire — a mechanical component that can fail silently until the moment it's actually needed.
Critical remote controls (the skylight winch) located inside the very space they're meant to control during an emergency become unusable exactly when needed most.
An emergency fire pump reporting normal operation and pressure gave false reassurance while water genuinely wasn't reaching the fire main — a fault the crew couldn't diagnose in real time.

Recommended Actions

Grounded in what this incident shows:

Recurring minor equipment faults (small fuel leaks, in this case) deserve root-cause investigation, not repeated temporary fixes that let the underlying problem persist indefinitely.
Fixed firefighting system release mechanisms — cables, wires, linkages — need regular physical inspection specifically for degradation, not just confirmation the system exists and is charged.
Remote controls for emergency equipment should be genuinely reachable during the exact emergency they're meant to support — a control inside the space it closes off is a real design gap on an older vessel worth actively working around.
An emergency pump showing normal readings doesn't confirm water is actually reaching its intended destination — a genuine end-to-end check (water actually discharging) is what confirms function, not instrument readings alone.

Human Element Analysis

Deferred maintenance treated as routine

Nobody decided the fuel leaks were acceptable in a single moment — each individual patch job was a reasonable response to a specific leak. The pattern of never investigating why they kept recurring is where the real risk built up.

A safety system that failed at the one moment it mattered

The CO2 system existed, was maintained to the standard expected, and still failed — a parted release wire is exactly the kind of hidden mechanical failure that inspection regimes are meant to catch before it's needed in anger.

Instrument readings that didn't match reality

A pump showing correct pressure while no water reached the fire main is a genuinely disorienting failure for a crew mid-emergency — trusting an instrument reading over the physical outcome it's supposed to represent cost real time.

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