Source container FQG61, FQG62
48
Hauser
Maintenance and inspection
Cleaning
Clean the device at regular intervals. When doing so, observe the following:
• Clean the device of substances which impact the safety function
• Keep labels legible
• Clean the adhesive labels and the terminal box (versions with pneumatic actuator) with water and
a damp cloth.
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CAUTION
When cleaning the device, all safety instructions must be observed
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Maintenance and inspection
No device maintenance is required if the device is used as designated and operated under the
specified ambient and operating conditions.
The following checks are recommended as part of routine plant inspections:
• Visual inspection for corrosion of the housing, weld seams, outer parts of the source insert and
lock(s), toothed lock washers and the reference O-ring
• Check regarding the movability of the source insert (on/off function)
• Inspection of the readability of all labels and the condition of the warning symbols
• Check of the stability and position of the source holder
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CAUTION
What to do in the event of irregularities at the source container
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If there are any doubts about the operational reliability or proper condition of the device, seek
immediate advice from the competent radiation safety officer.
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Non-routine repairs or maintenance must be performed by the manufacturer or distributor or by
a person specially authorized to perform the work.
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CAUTION
What to do in the event of corrosion
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If there are clear signs of corrosion at the source container, the local dose rate around the device
must be measured. If the value is significantly above the normal operation levels, cordon off the
area and notify the radiation safety officer responsible. Corroded devices and toothed lock
washers should be replaced as soon as possible in all cases.
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Source containers with corroded locks or corroded source inserts must be replaced immediately.
The reference O-ring is intended to help check for damage or the influence of aggressive media.
Based on the condition of the reference O-ring, conclusions can be drawn regarding the
potential condition of the seals inside the source container.
Routine tests of the shutter
mechanism
Source containers with manual ON/OFF switching mechanism
1. Release the locking bolt (FQG61/FQG62; order code 020, option B) or remove the padlock (if
present) as described in the "Operation" section.
2. Move the source insert several times from ON to OFF and from OFF to ON as described in the
"Operation" section (→ 42). It should be possible to easily move the source insert and there
should not be any visible signs of corrosion:
• If it is not possible to move the source insert from ON to OFF, follow the instructions in the section
"What to do in an emergency" (emergency action).→ 51
• If it is hard to move the source insert or if there are other signs of a malfunction, the source insert
must be secured in the "OFF" position and the competent radiation safety officer notified.
• In the event of corrosion, follow the instructions in the section "Maintenance and inspection"
(measures in the event of corrosion).→ 48
Source containers with pneumatic ON/OFF switching mechanism
1. Remove the padlock→ 40
