The main purpose of employing safety procedures to a hydrostatic pressure test is to ensure that the tests are carried out with emphasis on safety and efficiency. The tests are in place to cover the testing of any new or existing system that use varying pressure during daily production, and are the responsibility of the mechanics, supervisors, inspectors, and anyone involved with pressure systems used on a daily basis.
Ensuring the safety, reliability, durability, and leak tightness of any functional pressure system is an essential task. Before a new system is put into daily production, a pressure test must be carried out to ensure its functionality. A test must also be carried out on an existing system after a specified amount of time, as well as straight after a repair or alteration.
There are two main methods for carrying out a pressure test; hydrostatic and pneumatic. A hydrostatic pressure test is performed using water as the testing medium. A pneumatic test is based around non-flammable and non-toxic gases such as air or nitrogen. These two types of testing methods must be carried out under the strictest of conditions; only after a controlled plan has been approved and officially documented.
A hydrostatic pressure test is often the preferred method of testing for various systems as the risks are far lower. There are far more dangers and risks present when performing a pneumatic pressure test, as the potential for a higher level of energy is a major factor for the safety of those performing the test. A pneumatic test can only be performed when a pressure system has been designed that they are unable to be filled with water, or where any trace of the testing medium cannot be left behind.
If you require more information on these methods pressure testing, on the dangers of pressure tests, or acquiring approval for testing, then contact your local hose management firm who will be more than happy to discuss the testing of your pressure system and its components.