Designation MDH
Type 50l
Dokumentation
DOK-315-GB.doc
Order-No. 200-0157
11 Inspection by qualified experts
Pressure containers must be checked on a regular basis by qualified experts. The in-
spection intervals depend on operational experience, the substances used, and the
outcome of previous inspections.
However, the following periods may
not
be exceeded:
Internal inspection:
every 5 years
Pressure testing:
every 10 years
External inspection:
every 2 years
Internal and external inspection must be performed after
5,0
00 stress reversals. Re-
cord each startup and rundown of the container with a pressure fluctuation range >
3bar (equivalent to one stress reversal).
Acceptance test
:
.....................................
inspector
at:
.....................................
date
sign:
..................................................................
10
