Vega VEGASOURCE 84, Operating Instructions Manual

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7 Maintenance and fault rectification
VEGASOURCE 84 • Source holder
1008681-EN-230810
r
1
3
4
2
5
Fig. 19: Measuring points for the measurement of the local dose rate
r Distance to the source holder
1-5 Measuring points
Always use the same distance (r) from the source holder to the meas-
uring points.
Document the measurement results.
Date of the measurement
Time of the measurement dd/mm/yyyy
hh:mm
Measuring distance r
Value of the last measurement
(µSv)
Measuring point Measured value
(µSv)
1
2
3
4
5
Tab. 4: Measurement protocol for the local dose rate
7.4 Leakage/contamination test
The contamination of the source capsule must be checked at regular
intervals. The frequency of the contamination test (also wipe test)
must correspond to the specifications of the authorities or the han -
dling permit.
Note:
A contamination test is not only required as a regular test but must be
carried out after each incident that could impair the shielding of the
source. In such case, the contamination test must be prescribed by
the responsible radiation safety officer under consideration of the ap -
plicable regulations and comprise, apart from the source holder itself,
all other affected parts of the process vessel.