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Operating pressure containers
•
National regulations and laws must be observed when ope-
rating pressure containers! Anyone who operates a pressure
container must maintain it in proper condition, must operate
it properly, must monitor it and perform necessary mainte-
nance and repair tasks without delay, and must take measu-
res appropriate for the circumstances to ensure safety.
•
A pressure container must not be operated if it exhibits de-
fects that could present a hazard to those working directly
with it or third parties. You can obtain a copy of the pressure
device regulation from Beuth Press.
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Unpacking
Unpacking
- Please unpack the device carefully
- In the case of any damage a detailed report must be sent
immediately (post, rail or forwarder).
Delivery scope
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1 x Threaded ring
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1 x C 62 decomposition vessel
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1 x Conical seal
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1 x Operating instructions
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1 x O-Ring 8*2
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2 x Mandrel (sealing tool)
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2 x O-ring 25,0*3,5
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1 x C 8 ignition wire
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1 x O-ring 5*2
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1 x Insulating bushing
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2 x O-ring 25,0*3,5
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1 x Compression spring
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1 x O-ring 5*2
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1 x Test report
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1 x O-ring 6*2
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1 x Two-hole nut driver, DIN 3116
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1 x O-ring 15*2
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1 x Pessure hose (for leak tests)
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1 x Single-ended open jaw spanner, SW13
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1 x Single-ended open jaw spanner, SW10
Opening the decomposition vessel
First remove the threated ring screwed on the bottom in condition
of delivery by clockwise turning.
Use the mandrels included with de-
livery to open the decomposition
vessel (Item 1040). Place one mandrel in a
lateral side hole of the decomposition ves-
sel and second one in a side hole of the nut.
If there is no pressure in the decomposition
vessel you can loosen the nut by turning
counter-clockwise (right-threaded) and re-
move the entire cover. If the decomposition
vessel is underexcess internal pressure, the threading is under pres-
sure and cannot be opened. In this case, pressure must first be re-
leased from the decomposition vessel (see the section entitled Re-
leasing the pressure from the decomposition vessel).
The decomposition vessel consists of the following parts:
Cover
Lower
Crucible
Threaded
part
ring
Securing the ignition wire in place
The iron (Fe) ignition wire included with delivery (IKA C 8) is a
combustible ignition wire whose extraneous energy must be ta-
ken into consideration during the test. The ignition wire should
be shortened to a suitable length. Determine the weight of the
shortened ignition wire on an analytic scale and then calculate the
extraneous energy released by the combustion of the ignition wire
from the specific gross calorific value in (J/g) and the weight of the
ignition wire in (g).
This extraneous energy must be taken into
consideration when entering the sample data
in the test preparation. Generally, the Fe igni-
tion wire burns without residue so that there
is no need for a correction calculation in re-
gard to residue of the ignition wire that did
not undergo combustion. If you should nev-
ertheless need to perform a correction calcu-
lation (for example for using a Nickelin ignition wire; IKA
C 8), determine the weight of the residue of the ignition wire that
did not undergo combustion after the test. Correct the extraneous
energy that was entered. If you are working with an ignition aid
threaded on the ignition wire (ignition platelets), their extraneous
energy must also be known and taken into consideration in the
correction calculation. The ignition wire (Item 1060) is inserted
through the holes in the electrodes (Item 9), wrapped around the
ends of the electrodes for better contact and separated from the
excess length.
Calibration
The procedure in this case is different from that described for
the BA C 2000. In this case the decomposition vessel is not filled
with oxygen as an explosive and benzoic acid is not used as the
calibration substance. In this case a special ignition wire made
from technical pure iron (C 8) is required (see the List of material
supplied for the C 62). As a calibration substance, use an explosive
with a known explosion heat. The explosion heat should be in the
range from 3000-5000 J/g (approx.). You can use the explosive
specified for this purpose by the authority responsible in your
country. Where this is not available or possible, use the explosive
of your own manufacture which has been specified as a reference
substance. This material should have a sufficient long-time stability.
Using a charge density of 0.1 g/ml free volume of the
decomposition vessel, weigh out 2,5000 g of the reference
powder (see the Technical Supply Conditions, Germany TL: 1376-
0600). The ignition wire attached to the ignition electrodes
(Item 9) must be long enough to form a loop which can be
immersed in the powder. Avoid any contact between the
ignition wire and the combustion crucible. Instructions regarding
all the other preparations for calibration and testing can be
found in the C 2000 and C 62 Operating Instructions manual).
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