18
6 CALIBRATION TEST PROCEDURE (REFERENCE)
6.1 General
This procedure describes the calibration procedure for the PM1701M
instrument. The calibration tests shall be performed by qualified calibration facilities.
The instruments shall be calibrated during manufacture, after repair and periodically
during operation and storage as required by national regulations.
6.2 For operations and measuring instruments refer to the Table below.
Operation
Paragraph
Reference and auxiliary measuring
instruments
External
examination
6.6.1
-
Check-up
6.6.2
-
Testing of
metrological
characteristics
6.6.3.1,
6.6.3.2
Dosimeter calibration assembly with a
reference source
137
Cs in compliance with
ISO 4037-1. Certified uncertainty of the
assembly not more than 5 % at 0.95
confidence probability
-
6.4
Barometer. Least division 1 kPa.
Measurement range from 60 to 120 kPa
-
6.4
Thermometer. Least division 0.1
°
C.
Measurement range from 10 to 30
°
C
-
6.4
Hygrometer. Measurement range from 30 to
90 %
-
6.6.3.1,
6.6.3.2
Stopwatch. Measurement range from 1 to
600 s
-
6.4
Dosimeter. Intrinsic error
±
15 %.
6.3 Safety precautions
During the calibration procedure observe the existing national standards for
handling radioactive materials and other sources of ionizing radiation and radiation
safety regulations, as well as on-site accident prevention instructions.
6.4 Test conditions:
- ambient temperature
(20
±
5)
°
C;
- relative air humidity
(60
±
15) %;
- atmospheric pressure
(101,3
±
4) kPa;
- background gamma radiation:
not more than 0.20
µ
Sv/h.
6.5 Preparation for calibration tests
Prior to calibration, study this Operating Manual and prepare the instrument
according to the Operating Manual.
