This blueprint is part of the "Dense City Blocks" blueprint book. (HQ Album, Complete Book String).
Flexible oil refining. Converts all heavy oil into light oil, and all unused light oil into petroleum gas. Produces (4650 Petroleum OR 2193.6 Petroleum + 2820.5 Light Oil) AND 119.6 Lube, 7.9 Solid Fuel (into Logistics Chest). Unused light oil is thresholded; if light oil storage rises above a set level (default 250K), it is cracked into petroleum gas.
It is assumed that all Input/Output pipes have a capacity of 1,000 units / sec. To power fully, supply all four crude and all six water pipes. Don't miss the two water pipes at the top! Without the beacons, this much water is unnecessary.
This is the "paste and forget" blueprint. The idea is to remove light oil usage as a factor in your refinery. For early factories, use the beacon deconstruction planner included in the Dense City Blocks book to remove the beacons until they are needed.