15.30. Philosophy of instrumentation installation
15.30.1. Flow and quantity
Sufficient flow metering, temperature, and pressure indications shall be installed in feed, rundown, and utility streams to provide information for the operation and the calculation of heat, pressure, and material balances for each individual Unit.
15.30.2. Alarm and safeguarding system
If failure of any piece of plant equipment or its associated instrumentation may give rise to hazards for personnel, to consequences with considerable economic loss, or to undue environmental pollution, alarm and/or safeguarding instruments shall be installed. Where appropriate, safeguarding equipment shall be automatically bring the relevant plant or part of the plant to a safe condition ...
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