What is the recommended duration for maintaining a hydrostatic test of a cylinder?

The recommended duration for maintaining a hydrostatic test of a cylinder is 30 seconds. This duration ensures that the cylinder is subjected to a sufficient period of pressure to accurately assess its structural integrity and check for leaks or weaknesses in the material. Maintaining the cylinder under pressure for this length of time allows for an effective visual inspection of the cylinder’s response to the test, ensuring it can safely hold the necessary pressures during its operational use. Proper adherence to this duration is critical for safety regulations and standards in handling pressurized cylinders.