The Superfactory with No Inspector

He followed the fault down the line until he reached Constant-Temperature Pump Station Seven. “It isn't the machine tool. The coolant is pulsing.” The monitoring screen claimed pressure was normal, but the physical pipe temperature fluctuated. When he opened the bypass valve, he found the valve core installed backward. Someone had used clean test data to conceal a ridiculous assembly mistake. Replacing it meant a two-hour shutdown. The countdown gave him no such luxury. Lu Yao studied the piping diagram, disconnected two flushing hoses, and connected the waste-fluid recovery pump in parallel with the temperature loop. Then he locked the pressure valve at its critical opening with a wrench. [WARNING: NONSTANDARD MODIFICATION MAY DAMAGE EQUIPMENT.]