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Identify Every Energy Source
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Equipment holds more energy than the switch suggests.
• Electrical — including capacitor, battery and generator back-up.
• Stored pressure — lines, vessels, accumulators and instrument air.
• Gravity — raised parts, suspended loads, elevated fittings.
• Thermal, chemical, hydraulic and rotating kinetic energy.
Identify every source on the equipment and record it on the isolation list before a single bolt is touched.
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