Instruction for the IBTV industry 1-087-81 establishes the basic requirements for monitoring the state of the air environment in production facilities, working areas at oil industry facilities. In particular, in clause 1.3. talking about the organization of the continuity of the process of measuring the gas content by stationary alarms. Typical equipment of this type is drilling gas analyzer GSV-1, which is produced in two versions - to measure the concentration of methane or hydrogen sulfide (indicated by the additional letter "I" or "E" in the label).
Main characteristics of gas analyzers GSV-1
Common to both models is:
- explosion-proof design, i.e. the device can be safely installed in places with a high probability of the presence of maximum permissible gas concentrations in the atmosphere;
- interchangeable with sensors of the same type;
- the enclosure corresponds to the IP67 class in terms of the degree of protection (dust ingress is completely excluded, does not let water through during short-term immersion to a depth of 1000 mm);
- the space under the rotor is protected by a canopy;
- informative display with anti-glare effect.
Models differ in body color. The GSV-1E gas analyzer is painted yellow, the GSV-1I version is red. Also, the devices use fundamentally different sensors. In GSV-1E electrochemical is used, the principle of which is based on measuring the electric current produced by the electrochemical cell during the chemical reaction of the molecules of the component being determined.
An infrared optical sensor is installed in the GSV-1I drilling gas analyzer, which determines the non-explosive concentration of methane.
Gas analyzers GSV-1 are used as a complete set in systems for monitoring the gas content of the air, which may also include controllers, control and switching modules, light and sound alarms, and an independent power source. In some systems, automatic activation of forced ventilation devices is provided when a critical condition occurs.
The main task of drilling gas analyzers is to continuously monitor the ambient air, record the parameters for the presence of methane or hydrogen sulfide, and promptly notify personnel about an emergency.
