A reduction in the thickness of the material may cause the crucible
to burn and may damage the C 7010 and C 7012 decomposition
vessel.
For reasons of safety, crucibles must not be used any more after
a maximum of 25 combustion procedures.
Specification of the decomposition vessel:
The decomposition vessel is manufactured in accordance with the
regulation for pressure vessels
2014/68/EU.
This can be
recognized
from the CE symbol
with the identifying number of the
testing sta-tion named. The decomposition vessel is a pressure
device of
Category III. The decomposition vessel has been
subjected to an
EC prototype test. The CE declaration of
conformity represents
our guarantee to you that this
decomposition vessel complies with
the pressure device
described in the EC prototype test certificate.
The decomposition
vessel has been subjected to a pressure test
at a test pressure
of 330 bar (33MPa)
and a leak test with oxygen
at 30 bar (3MPa).
C7010 and C7012 decomposition vessels are experi-
ment autoclaves and must be tested by a professional-
ly trained person each time before they are used.
An individual application is understood here to mean a series of
experiments that are performed under roughly the same conditi-
ons in terms of pressure and temperature Experiment autoclaves
must be operated in special chambers (C7000).
Repeated tests
The decomposition vessel must be subject to repeated tests
(internal tests and pressure tests) by a person with professional
training. The intervals between tests must be determined by the
operator based on experience, operating manner and the material
used in the decomposition vessel.
The declaration of conformity loses its validity if mechanical modi-
fications are made to the experiment autoclaves or if stability can
no longer be guaranteed as a result of heavy corrosion (for exam-
ple holes eaten in it by halogens).
The threading on the body of the decomposition vessel
and cap screw in particular are subject to a high level of
mechanical stress and must therefore be monitored
regularly for wear and tear.
The condition of the seals must be checked for functionality must
be ensured by means of a test for leaks.
(see the sections entitled ”Leak test”)
Pressure tests and service tasks on the decomposition vessel
must only be performed by persons with professional training.
We recommend that the decomposition vessel be sent into our
factory for inspection and repairs if necessary after either 1000
experiments or after one year or, depending on the application,
even sooner than this.
Definition of person with professional training
A person with professional training as defined in these operating
instructions is someone
1. whose training, knowledge and experience gained through
practical activities ensures that that person will perform the
tests in a proper manner.
2. who is sufficiently reliable
3. who is not subject to any instructions in terms of testing activity
4. who is equipped with suitable testing equipment if necessary
5. who can provide suitable proof demonstrating compliance with
the requirements listed in 1.
Operating pressure containers
National regulations and laws for operating pressure containers
must be observed!
Anyone who operates a pressure container must maintain it in pro-
per condition, must monitor it and perform necessary maintenan-
ce and repair tasks without delay, and must take measures appro-
priate for the circumstances to ensure safety.
A pressure container must not be operated if it exhibits defects
that could endanger those working with it or third parties.
You can obtain a copy of the pressure vessel regulation from Carl
Heymann Press or Beuth Press.
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