Basic Process Knowledge (True/False Questions) 20170816
Thread Content
The opening pressure (set pressure) of a single safety valve shall not be greater than the design pressure of the equipment. When multiple safety valves are installed on a device, the opening pressure (set pressure) of one of these safety valves should not be greater than the device’s design pressure ； The opening pressure of other safety valves can be increased, but it should not exceed 1.10 times the design pressure of the equipment. (Mistake; it should be: The opening pressure (set pressure) of a single safety valve shall not be greater than the design pressure of the equipment.) When multiple safety valves are installed on a device, the opening pressure (set pressure) of one of these safety valves should not be greater than the device’s design pressure ； The opening pressure of other safety valves can be increased, but it should not exceed 1.05 times the design pressure of the equipment
The opening pressure (set pressure) of a single safety valve shall not be greater than the design pressure of the equipment. When multiple safety valves are installed on a device, the opening pressure (set pressure) of one of these safety valves should not be greater than the device’s design pressure ； The opening pressure of other safety valves can be increased, but it should not exceed 1.10 times the design pressure of the equipment. (x)