Safety investigators found the pressure relief valve on the cooker that exploded had also failed to operate correctly a year before.

- The pressure relief valve was opened, and the pressure initially decreased but then started climbing again. The temperature went far above the setpoint, reaching 385°F.

An independent federal agency that investigates major chemical incidents released an update June 18 to its ongoing ...

But the vent valve did not open as intended, and the pressure continued to rise. By 2:47 p.m., the vessel's temperature exceeded the 300-degree set point.

The pressure relief valve was opened at 2:54 p.m. but despite a dip in pressure, it continued to climb. ... The right photo shows the almost closed automated vent valve from the explosion.

At least 2 killed in explosion at Louisville plant 00:26. At least two people are dead and multiple others injured after an explosion Tuesday at a Louisville, Kentucky, plant caused a partial ...

For engines with a crankcase volume exceeding 0.6 m³, additional explosion relief valves are required to safely manage the excess pressure. Furthermore, a crankcase explosion relief valve must be ...

Federal investigators found that the explosion could have been prevented by a pressure relief valve, and the company was fined $10,000.LFD said Wednesday they no longer have that anhydrous ammonia ...

The pressure built up to an excessive level and wasn't able to escape, he wrote, due to a malfunctioning or defective pressure relief valve on the tank, causing the explosion.

The tank exploded because there was no relief valve, according to a report from the Chemical Safety Board.The blast killed Louis C. Perry, 44, of Louisville, who investigators said was standing ...