RU2664756C1 - Device for radiation detecting of technological equipment and radiation control of operating personnel - Google Patents

Abstract

FIELD: nuclear physics and equipment.SUBSTANCE: invention relates to devices used for detection, measurement and radiation monitoring of the environment and radioactive emissions from structural components of production equipment. Gist of invention is that the device for detecting radioactivity of production equipment and radiation control of operating personnel provides the possibility of detection and localization of radioactive elements of equipment, monitoring the changes in the radiation level over time, combining the functions for simultaneous individual monitoring of doses received and the status of personnel who are in a radiation hazard zone.EFFECT: device functionality enhancement for detecting the radioactivity of production equipment and radiation control of operating personnel.1 cl, 1 dwg

Description

Technical field

The invention relates to devices used for the detection, measurement and radiation monitoring of the environment and radioactive emissions from structural elements of technological equipment, in particular equipment of offshore oil and gas facilities. The claimed device can also be used to control gamma and neutron radiation fluxes as part of continuous monitoring systems for onshore oil and gas pipelines, pump and compressor stations.

The ultimate goal of the use of such devices is to protect maintenance personnel of hazardous facilities, as well as ensuring environmental safety for the public and the environment.

State of the art

It is known "Device for multipoint signaling" [copyright certificate for the invention No. 888160, publ. 12/07/1981], responsive to a deviation from the given parameters of various objects. The device has the widest purpose and contains a power source, a pulse voltage source connected to the first inputs of the control units n - alarm cells, and the outputs of the control units are connected to separate inputs of the light signaling unit and the sound signaling unit, and to the second, third, fourth, fifth and to the sixth input of each control unit, respectively, separate signal sensors, blocking signal sensors, a common acknowledgment element, common closing and opening keys of the test block are connected .

The analogue does not indicate the type and principle of operation of the sensors; this element is formulated at a generally functional level. If we use sensors for monitoring radiation from elements of equipment, locations of personnel and the environment with which this device provides warning functions about the presence and exceeding of established and acceptable levels of gamma and neutron radiation at the installation sites, as it can be used sensors, it can be considered as an object of the same purpose as the claimed complex.

The disadvantages of this device are the lack of personal dosimetry, information and communication units and, accordingly, the ability to present the current values of measured and recorded quantities, the function of integrating their current values to control the energy or particle flow (dose) absorbed by the protected object, as well as additional local control units individual elements of equipment with increased levels of radiation and, accordingly, the ability to control areas with increased levels of radiation with their designation signaling and exceeding the established permissible values.

As a prototype of the present invention adopted "Device for the detection of radioactive materials" [RF patent No. 2129289, publ. 04/20/1999], containing a gamma radiation detection unit (hereinafter referred to as a sensor), a neutron radiation sensor, a presence sensor, an tamper sensor, each of which is connected to separate controller inputs, and an alarm unit and a control panel - to separate outputs this controller.

The prototype does not disclose the composition and principle of operation of the control panel, this element is presented at the general functional level.

The disadvantages of this device is the lack of personal dosimetry units, information and communication with identifiers, dosimeters, information boards, signaling devices and intercoms connected to the controller via the trunk interface and designed to measure the level and determine radiation doses, prevent them from exceeding, prompt notification of users and their communication with the operator, as well as additional local control units for individual items of equipment with a high level radiation and, therefore, the ability to control zone with an increased level of radiation, with their designation and signaling exceeded preset allowable values.

Disclosure of invention

The problem solved by the invention is the provision of centralized radiation control and the process of evacuating personnel from hazardous areas in case excess doses are exceeded or if conditions arise that are unacceptable for personnel to be in controlled areas.

Achievable technical result is the expansion of the device’s functionality by providing the ability to detect and localize radioactive equipment elements, to control changes in radiation level over time with a combination of functions for simultaneous individual control of received doses and the state of staff in the radiation hazard zone.

The problem is solved by the introduction of new functional elements and the relationships between them.

The proposed device for detecting the radioactivity of technological equipment and dosimetric monitoring of service personnel includes a controller, radiation measurement sensors from elements of the controlled equipment, personnel presence sensors, environmental radiation monitoring sensors, each of these sensors is connected to the corresponding controller input, also contains an information and control panel and alarm unit also connected to the controller output. At the same time, the device contains newly introduced personal portable dosimetry, information and communication units, each of which has a built-in identifier, dosimeter, information board, sound annunciator, user communication module, and the listed elements of personal units are connected through an address converter of interfaces of each unit and the device main interface with the mentioned controller. The controller, along with the mentioned alarm unit, is built into the remote control and is directly connected to the operator's communication module, keyboard and monitor, which are additionally introduced into the remote control circuit, and also contains additional local control units for individual items of equipment with increased radiation levels, each of which has a built-in identifier, a measurement sensor radiation, information board, light and sound signaling device, moreover, the listed elements of local control units are connected through an addressable converter l interface of each unit and the main interface device with a built-in remote controller.

List of figures

FIG. 1 - A device for detecting the radioactivity of technological equipment and dosimetric monitoring of staff.

The implementation of the invention

The device for detecting the radioactivity of technological equipment and dosimetric monitoring of service personnel, shown in FIG. 1, contains a controller 1, sensors 2 for measuring radiation from elements of controlled equipment, sensors 3 for the presence of personnel, sensors 4 for environmental radiation monitoring, and each of these sensors is connected to the corresponding input of controller 1, also contains a control and information panel 5 and an alarm unit 6 , also connected to the output of controller 1, and also contains newly introduced personal portable units 7 for dosimetry, information and communication, each of which has a built-in identifier 8, dosimeter 9, information a display board 10, an audible warning device 11, a user communication module 12, the listed elements of the personal blocks 7 being connected via an addressable converter 13 of the interfaces of each block and the main interface 14 of the device with said controller 1, which, together with the said signaling block 6, is integrated into the remote control 5 and directly connected with the operator’s communication module 15, keyboard 16 and monitor 17, additionally introduced into the circuit of the remote control 5, and also contains additional local control units 18 for controlling individual elements in equipment with a high level of radiation, each of which has a built-in identifier 19, a radiation measurement sensor 20, an information board 21, a light and sound signaling device 22, and the listed elements of the local control units 18 are connected through an address converter 23 of the interfaces of each unit and the main interface 14 of the device with a built-in to remote control 5 by controller 1.

The device operates as follows.

Sensors of 2 dosimetric measurements installed on items of equipment that can accumulate salt deposits and become sources of radiation in the near space, as well as sensors 4 of radiation monitoring of the environment and sensors 3 of presence, monitoring the presence of personnel in radiation hazardous places, transmit information on their controlled parameters to controller 1.

The signals from the dosimetry, information and communication units 7 to the controller 1 via the trunk interface 14, transmit:

- from the identifier 8 through the converter 13 of the interface personal data about the user of a particular unit 7 located in the controlled area;

- from the dosimeter 9 through the converter 13 of the interface readings about the level of radiation and the dose received by the user.

In this case, the controller 1 senses, processes and transmits to the operator information reproduced by the monitor 17.

The signals displayed on the display 10 of blocks 7, represent information on the current values of the parameters monitored at the sensor installation sites, dosimeter readings and signals about the approach or excess of the maximum permissible dose.

If the permissible dose of radiation is exceeded, the signaling device 11 of block 7 gives the user light and sound signals about the need to stop working and leave the radiation hazardous room. In this case, information about the dose received is displayed on the scoreboard 10.

The operator of the remote control 5 receives an audio signal from the signaling device 6, information on personal data, dose and location of the user according to the readings of the sensors 3 from the monitor 17, communicates with the user using the communication modules 15 of the remote control and 12 of the unit 7. After conversations with the user, the unit acknowledges the audio signals 6 alarms and annunciator 14 using the keypad 16 of the remote control.

On the item of equipment controlled by the sensors 2, with the detected increased level of radiation, additional local control units 18 are installed. Block 18, installed directly in the area near the maximum radiation level, having its identifier 19 (for reference to the installation location), transmits information from its radiation sensor 20 to the controller 1 of the console and to the information panel 21 of its block. At the same time, the light and sound signaling device 22 of the unit constantly gives intermittent warning light signals of yellow color, for example, from an LED mounted on the front panel of the unit 18.

If the permissible radiation levels are monitored by sensors 2 and / or sensors 20 of blocks 18, information on the display 10 is transmitted from controller 1 to blocks 7 of users in a dangerous room, accompanied by sound signals from signaling unit 6 and light-sound signaling devices 14 and 22. The sound signals from the signaling devices 6 and 14 are acknowledged by the buttons of the keyboard 16 of the remote control and unit 7 by the operator and the user, respectively, and the light-sounding signaling devices 22 of the units 18 are lit in constant red accompanied by an intermittent sound set volume to alert personnel.

Information about the monitored parameters at specified intervals and when exceeding the permissible values is recorded in the long-term memory of controller 1.

The operator of the remote control 5 controls the general condition of the object and the environment according to the parameters displayed on the monitor 17, the doses received by the personnel (users of dosimetry units 7), and also has the ability to call up the current monitored parameters and parameters from the long-term memory of the controller 1 using the keyboard 16 In this case, the information requested using the keyboard 16 can be presented on the screen of the monitor 17 in the form of separate frames for doses received by users, for the presence of personnel and the level of radiation and equipment located inside and outside them, according to controlled environmental parameters from sensors 4, etc. Parameters can be presented in the form of graphs according to the readings of individual sensors over time to identify trends in increasing levels of radiation, as well as in a generalized form.

In the long-term memory of controller 1, personal data and previously received doses of users are stored, which makes it possible to ensure access to personnel work taking into account previously received doses of radiation.

The operator communicates with each user (or the user with the operator by a sound signal of a call from the remote control unit 6) through the communication modules 15 and 12, which are built into the remote control 5 and units 7, which is important in case of a threat of exceeding the permissible doses or when conditions arise that are unacceptable for the presence of personnel in controlled areas.

Claims (1)

A device for detecting the radioactivity of technological equipment and dosimetric monitoring of maintenance personnel, comprising a controller, sensors for measuring radiation from elements of controlled equipment, personnel presence sensors, environmental radiation monitoring sensors, each of which is connected to the corresponding controller input, also contains an information panel and control unit and an alarm unit, also connected to the controller output, characterized in that it contains again in single personal portable dosimetry, information and communication units, each of which has a built-in identifier, dosimeter, information board, sound annunciator, user communication module, and the listed elements of personal units are connected through an address converter of interfaces of each unit and the main interface of the device with the mentioned controller, which together with the aforementioned signaling unit, it is integrated in the control panel and is directly connected to the intercom operator’s module, keyboard and monitor, and also contains additional local control units for individual items of equipment with high radiation levels, each of which has a built-in identifier, radiation measurement sensor, information board, light and sound signaling device, and the listed elements of local control units are connected through an addressable interface converter each unit and the trunk interface of the device with a controller integrated in the remote control.

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