Vega VEGASOURCE 82, Руководство по эксплуатации

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7 Maintenance and fault rectification
VEGASOURCE 82 • Source holder
66076-EN-230810
The contamination test must be carried out immediately after an
incident.
The contamination test described below is specified:
•
For regular testing during operation
•
For when the source holder is stored for longer periods
•
For when the source container is put into operation after a longer
storage period
The contamination test (also wipe test) must be carried out by an
authorized person or organisation with a contamination test facility
provided by an authorised organisation. Contamination test facili-
ties must be used according to the instructions of the manufacturer.
Reports on the test results must be kept.
If no other instructions are specified, carry out the contamination test
as follows:
Fig. 30: Wiping surfaces for the contamination test - Version X, C
1. Take wipe samples from at least the following locations:
Version X, C - Manual switching ON/OFF:
Along the groove between the source insert and the housing
Version B - Pneumatic switching ON/OFF:
Along the thread of the ON/OFF position switches and the three
ring-shaped grooves on the cylinder housing
With manually operated source holders, the contamination test
can be carried out when the source holder is in position " ON " or
" OFF ".
On source holders with pneumatic switching ON/OFF, the switch
must be fixed with the lock in position " OFF " before starting the
contamination test.
2. Have the samples analyzed by an authorized organisation. A
radiation source is judged to be leaky if more than 185 Bq (5 nCi)
are detected in the sample of the contamination test.
Contamination test pro-
cedure