Gate Monitor

Designed for continuous automatic monitoring of cargo, baggage, passengers and staff; for detecting moving of radioactive and nuclear materials, for measuring the level of radiation generated by these materials, and for producing visual and sound signals

PURPOSE OF USE

Monitor with an extended (1000 mm) plastic detector UDPS and monitor with detecting units of gamma and neutron radiation UDVG and UDMN
Monitor is designed for continuous automatic monitoring of cargo, baggage, passengers and staff to detect unauthorized moving of radioactive and nuclear materials and also designed to estimate the power of the equivalent of the ambient dose H * (10) of gamma and / or neutron radiation of these materials and then begin making visual and sound signals when the limits are exceeded

FIELDS OF APPLICATION

• Efficient detection of cases of moving the sources of ionizing radiation using transport communications: railway and roads, through the territories of airports, seaports, border and customs posts, etc.
• Efficient detection of staff, vehicles or goods contaminated with radioactive substances at checkpoints, radiation-hazardous facilities (nuclear power plant, radioactive waste disposal sites, etc.);
• Efficient detection at points of reception secondary raw materials of scrap metal contaminated with radioactive substances, as well as detection of raw materials with high content of natural radionuclides at processing enterprises;

 

TECHNICAL CHARACTERISTICS

Liminal DER alarm at the level of natural radiative background, equal to H * (10)F,µSv/h	1,05·Н*(10)F
Range of DER of gamma and neutron radiation at which the monitor in the mode of indicator evaluates the measured value, µSv/h	from 0,05 to 50,0
Reaction time of the monitor when an ionizing radiation sourse appeares in the control zone and the sourse has an activity greater than the limit, no more, than	1
Cable length between the detection unit and the remote control, m	to 1200
Interface of connection between the components of of the monitor and the higher-level systems	RS422
Number of control points, which can simultaneously be parts of the monitor, pc	to 8 (optional-16)
Operating temperature range, ° C	from – 40 to + 50
Relative humidity	Up to 98 % at35°С
Degree of cases protection , not worse than	IP54
Warranty period of operation	2 years
The monitor is powered by AC voltage of 187 to 242 V, and frequency of 50 Hz

Minimum detectable amounts of radioactive material

izotope	Minimum detectable amounts in kBq
	Car version		Railway version		Pedestrian version
	UDPS	UDVG	UDPS	UDVG	UDPS	UDVG
241Am	2000	2700	6000	8000	160	220
133Ba	160	800	600	3000	11	55
137Cs	200	1000	700	3350	14	70
60Co	110	470	400	1700	8	35
232Th	90	300	300	1000	6	21

Indicated quantities of radioactive materials are given for the following conditions:

• width of the passage between two detection units (3,0 ± 0,2) m, height (3,5 ± 0,2) m from the roadway, speed transport is not more than (10 ± 2) km / h;
• width of the passage between two detection units (6,2 ± 0,2) m, height (4 ± 0,2) m from the railway, transport speed is not more than (25 ± 2) km / h;
• width of the passageway between detection units (0,7 ± 0,1) m, height (2 ± 0,1) m from the roadway, pedestrian speed is not more than (5 ± 1) km / h;
• level of background gamma radiation at the place of putting the monitor 0.10 mSv / h;
• false alarm rate is not more than 1 per 1000 movements, the probability of an alarm is not less than 0,5;
• protection of the source is absent.

SOFTWARE

Along with organization of automatic control of the level of the current background at the points of monitoring and automatic keeping of the archive about the data exceeding the limits, it provides the following functions:

• registration with specified frequency of testing results in the database with reference to the time and point of control, registration in the database of a complete list of faults;
• displaying information about the measured radiation of DER, the current rate of reading of the detection units, about the value of the set limits, and the facts of their exceeding, etc.