It was the map.
For ten years, Building 43 had been her control room. It sat 150 feet from the alkylation unit, a gray box of reinforced concrete, its windows sealed, its door an airlock. After the API RP 752 audit last quarter, the company had painted a bright green evacuation route on the floor and installed blast-resistant film on the glass. But Mara knew the real change wasn't the film. api rp 752 pdf
She typed into the log: "Release contained. No injuries. Occupied building exposure: none — per 752 relocation plan." It was the map
Then the low-pressure alarm on Reactor 7 chirped. a gray box of reinforced concrete