81
t
t
t
t
д
р
с
t
2
2
2
1
,
1
,
(3.11)
where
с
t
– the limit of permissible error of stopwatch;
р
t
= 1 s – the error caused by human reaction;
д
t
= 1 s - the error caused by the process during which the
collimator opens.
Turn off the device.
3.2.4.5.7 The device is considered to pass the verification if the
main relative error during gamma radiation DE measurement does
not exceed 15%.
3.2.5 Presentation of verification results.
3.2.5.1 Positive results of periodic or after-repair verification are
certified in the table of Appendix B or by issuing a verification
certificate for the legislatively regulated measurement equipment.
3.2.5.2 If the device is acknowledged unfit for use after its
verification, it gets the inadequacy certificate.