GE Amersham Typhoon Operating Instructions Manual page 18

2 Safety instructions
2.1 Radiation
Installation site of instrument
This instrument is capable of scanning not only storage phosphor screens but also fluo-
rescent pigment label samples (non-RI method). Therefore, it is recommended that the
user should install it outside the controlled area and use RI-indicated samples without
contacting them with storage phosphor screens directly.
However, as described above, the storage phosphor screen surface may be polluted by
radioisotope (RI), depending on the sample condition, since the instrument sticks the
sample to the
auto-radiography experiment of the
The degree of superficial pollution of the storage phosphor screen is greatly influenced
by the dryness of the sample and dose of radioisotope in an experiment and may exceed
the limits mentioned in the section above.
When the instrument reads a storage phosphor screen with a polluted non-exposure
area, it may be polluted. The degree of such superficial pollution greatly differs with
users' operation conditions. Superficial pollution may exceed the limit mentioned above.
Note:
Removal from the controlled
area
If it is necessary to move the instrument and its laboratory, which were installed and
have been used in the controlled area, from the controlled area, make sure that the de-
gree of the superficial pollution is below the limits mentioned in
tion, on page 17
18
3
H-compatible storage phosphor screen surface and exposes it in an
As mentioned above, install this instrument in the RI controlled area if the user
uses RI-indicated samples that will be in direct contact with storage phosphor
screens.
above.
3
H label sample.
Amersham Typhoon Operating Instructions 29193226 AC
Limit of superficial pollu-