MRU GmbH USER MANUAL MFplus Part 2 OPTION TRGI
7
3.1
Stress test
The stress test serves as loading test of the materials.
All new installed pipes will be tested without the use of faucets. All pipe ends must be closed with metal
plugs or caps.
Exception: The stress test can be carried out with faucets if their maximal pressure range is equivalent or
higher than the test pressure.
The stress test should be done as long as the pipes are still accessible and before they are covered with any
anti-freeze protection.
The test pressure is 1 bar (1.000 hPa).
The test medium is either air or a not burnable gas, NO Oxygen!
The test phase is usually 10 minutes. Temperature compensation is not mandatory but dependent on the
length of the pipes and the temperature difference between the test medium and the pipes - temperature
compensation is recommended.
Thereafter, the test pressure may not decrease within 10 minutes. During the test phase the pipes are to be
visually inspected, connections and junctions should be mechanically stressed.
It is forbidden to connect any test pipes with gas filled pipes!!
On the following pages different connection diagrams are shown.
