Question: Figure below shows the process flow diagram of a process where crude oil residuum from a distillation column is blended with expensive light gas oil
Figure below shows the process flow diagram of a process where crude oil residuum from a distillation column is blended with expensive light gas oil to produce a product with upper and lower octane number specifications.

Based on the process flow diagram above, complete the draft piping and instrumentation diagram continuing from above, indicating five control loops, four additional monitoring instruments or alarm systems and a safety mechanism that does not require electrical power. Define the control objectives for each control loop.
Crude oil residuum Light gas oil Product with desired octane number
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