Volume 2 - Atomic Energy Regulatory Board

Result :
Coefficient of linearity for timer of the unit is ___________
Tolerance : Coefficient of linearity < 0.1
9.2 Output Consistence:
Operating mAs X, Instrument reading (mR) Avg. mR/mAs
potential ξ M
1 2 3 4 5
Tolerance : Coefficient of variation < 0.05
9.3 Radiation Leakage Levels from X-ray Tube Housing at 1 metre from the
Focus
Operating potential : ________ kV, mAs : _______ mA x ______seconds
Radiation leakage level (mR/h or mR)
Cathode Anode Stand Front Top
Result : Maximum radiation leakage at 1 metre from the focus for workload
of 180 mA
minutes in one hour is ___________ mR.
Recommended upper limit :
Leakage radiation level at 1 metre from the focus
≤ 115 mR in one hour.
9.4 Radiation Leakage Levels from the Diaphragm/Collimator at 1 metre from
the Focus
Operating potential : ________ kV, mAs : ________ mA x ________seconds
Radiation leakage level (mR/h or mR)
Cathode Anode Stand Front Top
Result : Maximum radiation leakage through diaphragm/collimator at 1 metre
from the focus for work-load of 180 mA minutes in one hour is
____________ mR.
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