Polimaster PM1603A User Manual

35
( )
%100
TH
THHH
G
oj
ojHjkj
j
×
⋅
⋅−−
=


(6)
where H
kj
– is a final DE value, in mSv;
H
нj
– is an initial DE value, in mSv;
Η
•
oj
– is a calculated value of DER in the point of measurement, in mSv/h;
T – is the time of irradiation in hours
7) repeat measurements according to items (3-6) for the points where the DER value
is equal to 80 mSv/h at T=30 min and for value 1500 mSv/h at T=20 min;
8) calculate the confidential limits of the permissible intrinsic error of the verified
dosimeter for every point of measurement at the confidence coefficient 0.95, by formula
( )
( )
2
j
2
o
GG1.1 +=δ
(7)
where G
o
– is an error of a standard dosimetric assembly (in %);
G
j
– is the relative error of DE measurement calculated by formula (6), in %.
For PM1603A and PM1603B dosimeters compare the confidential limits of the
permissible intrinsic error δ calculated by formula (7) with the limits of an acceptable value
of the permissible intrinsic error δ
acc
= ±15 %. If δ > δ
acc
, the dosimeter is rejected,
if δ ≤ δ
acc
, the dosimeter is considered to be good.
For PM1603 dosimeter compare the confidential limits of the permissible intrinsic
error δ calculated by formula (7) with the limits of an acceptable value of the permissible
intrinsic error δ
acc
calculated by formula:
δ
acc
= ±(15 + 0.05/
Η
•
) %, (8)
where
Η
•
– is DE value, mSv;
0.05 – is coefficient, mSv.
If δ > δ
acc
, the dosimeter is rejected, if δ ≤ δ
acc
, the dosimeter is considered to
be good.
А.8 Presentation of the verification results
А.8.1 The results of verification are entered in the recommended record.
А.8.2 With good results of the initial verification, a signature and a verification mark of
an officer, as well as a stamp of the institution, at which the verification was carried out and
the date of verification are put in section 10 (Acceptance Certificate) of the operating
manual.
А.8.3 With good results of the regular verification or verification after the repair a
verification certificate for the dosimeter of the set form is issued.
А.8.4 With bad results of the verification the dosimeters are not accepted for use. An
unavailability report is issued for these dosimeters with indication of the reasons according
to the set form. In this case verification mark of the officer is to be liquidated and the
verification certificate is to be cancelled.

Polimaster PM1603A Specifications

General

Brand	Polimaster
Model	PM1603A
Category	Measuring Instruments
Language	English