Suppose a vertical separator is receiving a liquid flow rate of 13.0 L/min. The vessel is 1.23m in diameter. LSH is located 0.5 diameters above the NLLA level controller. LC is used to control the liquid level. If the LC fails such that the control valve completely closes, how long does an operator have to open the bypass to prevent a high-level shutdown? (1 decimal place) 137.1 min.