NUCLEONIX SYSTEMS RC 705E Instruction Manual page 37

32Q) What is Calibration Factor:
A) This is set at factory by Nucleonix when the equipment is calibrated in Radiation calibration lab. It may be
from (0.75 to 1.5) depending upon the sensitivity of the detector. It is not samefor all meters. It can be different
for different meters of same type. Customer should not change this calibration factor, which is password
protected. If changed will give wrong results and data.
33Q) How many background readings are to be noted and averaged to take as authentic background reading.
A) Typically 3 to 5 Background readings, averaging should be alright.
34Q) Whether Non-Ferrous Metals, such as copper, aluminum, zinc, brass & non-metals such as plastics, wood etc
also can get Radioactive Contamination?
A) Normally not. Not heard of.
35Q) Can only packaging materials such as packing nail, metal strap (MS) etc. get contaminated and not the actual
product under export?
A) Yes, there are such cases which have happened and hence, even these packing nails / metal straps are also to
be checked for radioactive contamination.
36Q) We manufacture SS, billets rounds, square bars which are longer. Our question is at how many locations we
should make measurements with Rad check meter? If it is contaminated, will it be uniform throughout the
length?
A) Measurement at 2/3 locations in full length may be enough approximately one reading per meter may be
enough. If it is contaminated, largely it will be distributed homogenously. Of course a non-uniform distribution
of RaC is not ruled out. Your measurement readings at two/three locations will give you can idea on this.
37Q) Our Industry manufacturers small sized components such as fasteners, SS rings, door hinges, latches etc.,
Question is if the components are small in size do we have to check each component ?If we check each
component separately whether results are meaningful?
A) If the components are small in size, then you can group them to make about 3 kg, put them in a plastic pouch
& cover complete front face of the detector. This will satisfy the mass & size criteria. Measurements are to be
carried out in this fashion only. If you check each component separately results will not be meaningful as
mass & size criteria are not met.
38Q) Can Garments such as Jackets having iron rings, and fancy buttons of iron / SS get contaminated
A) Yes, It is possible and hence exporter of these goodswith iron rings andfancy buttons of ferrousand SS materials
have to check for radioactive contamination.
39Q) Can one avoid making measurements at product processing level or check only final packed wooden crate
containing finished products in packed condition?
A) It is quite risky & since you will not be touching the components very closely, as wooden crate willprevent you
meter touching the components, there is a possibility of low level contamination being not detected. This can
be damaging to you. Hence we recommend inspection at different stages of production cycle. Also by detection
at early stage of production cycle, you will save on processing costs by not processing the contaminated input
material.
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