Chapter 6 Resources
Chapter Summary:
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The mystery trip: A Main Oil Line pump trips repeatedly with no alarms showing—sparking suspicion of human mischief.
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Forensic ingenuity: A hidden relay/LED trap captures a millisecond‑scale “Pressure High‑High” spike the front panel misses.
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True cause: A flaky pressure switch sent ~20 ms transients: fast enough to trip logic, too fast for electromechanical indicators—no sabotage.
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Leadership lesson: Assume good intent, verify with data, fix the physics, preserve trust.
Additional Notes:
A modern control room in a plant I visited recently. This looks very different from the 1980's control room in an oil platform, since large screen displays were not even in the horizon yet! In those days, displays used to be full of analog meters, lights, alarms, and buttons.
In this binary representation of a number, the black numbers 0 & 1 are binary bits used to represent a number, instead of decimal digits 0 - 9. Since this is also positional number system, the most significant bit 1 on the left end represents the value 27 which is equal to 128. This 11011010 binary representation is thus equal to 128+64+0+16+8+0+2+0 = 218 in decimal value.