Information Management

A: Governing principle: dominant degradation comes from the most kinetically active mechanism under actual wet and oxygenated conditions. At 60 °C with wet H2S and oxygen during shutdown, uniform corrosion with pitting governs wall loss and inspection interval. SSC needs sustained tensile stress and hardness control but doesn't explain metal loss rate. Option A traps engineers who anchor on NACE MR0175 without checking that corrosion, not cracking, sets the service life here.

A: Governing principle: calculate on uncompressed raw data, then apply redundancy exactly once. 2 000 × 1 Hz × 24 B × (3600 × 24 × 365 × 5) ≈ 7.5 TB raw, then mirrored to ~15 TB installed. Option D catches people who double twice by confusing written data with required installed capacity.

A: Governing principle: verify information flow from sensor to display before adjusting hardware. A consistent offset between injected and displayed value points to scaling or range mismatch in PLC or SCADA, not sensor drift. Option B traps engineers who jump to calibration before confirming the data mapping.

A: Governing principle: safeguards only block the hazards they’re designed for. A data diode stops inbound traffic but does nothing if the field data itself is wrong, stale, or mis-scaled. Option A catches people who assume cyber safeguards also guarantee data quality.