Alfa Laval FrontLine ClipLine, Инструкция по эксплуатации, Страница: 64 / 68

6.6 Pressure test after maintenance
Neither of these processes are allowed unless performed by a person
authorized according to local laws and regulations and following applicable
standards. If no such person is internally available, a third party authorized
entrepreneur working per local legislation using proper equipment shall be
engaged.
Before the start-up of production, whenever plates or gaskets have been
removed, inserted or exchanged, it is strongly recommended to perform a
hydrostatic leakage test to confirm the internal and external sealing function of
the plate heat exchanger. In this test, one media side at a time must be tested
with the other side open to the ambient pressure. In a multi-pass set up, all
sections of the same side must be tested simultaneously. The recommended
test time is 10 minutes for each media side.
CAUTION Risk of damage to equipment.
The recommended pressure for the leakage test is a pressure equal to the
operating pr 10% of the actual unit but never above the allowable
pressure (PS) as stated on the name plate.
WARNING Rik of personal injury.
Testing by putting gas (compressible media) under pressure can be very
dangerous. Local laws and regulations regarding to the hazard involved in
testing with a compressible medium must be respected. Hazardous
examples are explosion risk due to uncontrolled medium expansion and/or
suffocation risk due to oxygen depletion.
WARNING Risk of damage to equipment.
Any rebuilding or modification of the plate heat exchanger is the
responsibility of the end user. Regarding recertification and pressure test
(PT) of the plate heat exchanger the local laws and regulations for in
service inspection must be respected. Example of a rebuilding is that
more number of plates are added to the plate pack.
If there is any uncertainty about the testing procedure of the plate heat
exchanger, consult an Alfa Laval representative.
200000420-4-EN-GB 64
6 Maintenance EN