In large industrial and mining enterprises such as chemical plants, gas stations, port terminals, fireworks and firecracker factories, coal mines, offshore drilling platforms, and the petroleum and petrochemical industry, if various flammable and explosive gases, liquids, or dust and fibers are leaked or scattered during the experimental, production, processing, transportation, and storage processes, it is extremely easy to cause explosions and fires.

In flammable and explosive environments, the selection and installation of explosion-proof cameras become particularly important. For key safety prevention areas such as gas stations, there are also certain requirements for the explosion-proof level of explosion-proof covers and explosion-proof gimbals according to demand. Let's take a look at the selection and installation precautions for explosion-proof cameras at gas stations.

Precautions for selecting explosion-proof cameras

1. For key safety prevention areas such as oil depots, gates, and storage tanks in gas stations, explosion-proof cover cameras are generally used in the selection of front-end cameras, and night auxiliary lighting devices are considered according to monitoring needs.

In addition to general requirements for explosion-proof cover cameras, there are also corresponding requirements for the explosion-proof level of explosion-proof cover and explosion-proof pan tilt. At the same time, a combustible gas detection system is also required. When the detection reaches a certain concentration, the camera will monitor it accordingly and trigger sound and light alarms.

2. Gas stations have strict requirements for the installation of front-end equipment (explosion-proof cameras), and they also require products to remain stable and reliable during use, without the need for regular maintenance.

Due to the flammable and explosive environment of gas stations, special attention should be paid to not using flammable tools or flammable installation methods when installing surrounding environmental monitoring equipment to avoid live installation.
Explosion proof electrical equipment that is higher than or equal to the corresponding oil vapor level or group must be used in the explosion hazardous area of the gas station. The connection and laying of wires must meet explosion-proof requirements. The connecting wires usually need to be protected with explosion-proof hoses or galvanized pipes.

3. From the experience of monitoring engineering, it has been found that in order to have a safe and stable monitoring system, a stable power supply is necessary. Due to the unstable mains voltage, power outages often occur in suburbs. As a 24-hour operating unit, gas stations are not allowed to have monitoring blind spots. Therefore, an online UPS power supply should be designed at each gas station to meet the monitoring needs.

4. In addition, gas stations equipped with security systems may have more or less safety hazards in terms of lightning protection measures. Therefore, gas stations should be equipped with lightning arresters, down conductors, and grounding devices. Gas stations with open spaces and protruding buildings should be equipped with lightning rods. There shall be no less than two grounding points for the oil tank, and the tank body, pipelines, and other metal accessories shall be electrically connected and grounded. When thunderstorms occur, oil unloading operations should be stopped, and oil tankers parked in gas stations should be grounded for protection.

Precautions for installation and maintenance of explosion-proof cameras

1. The inlet of explosion-proof cameras must be sealed with rubber sealing rings, and it is prohibited to use other methods such as filling sealing adhesive, asbestos rope, etc. to replace it; Prohibit filling the cavity with any substance to prevent loss of explosion-proof performance; It is prohibited to discard the sealing ring and matching compression nut at the inlet for the sake of convenient connection; It is prohibited to merge multiple strands of single wire and enter the inlet through a single hole elastic sealing ring. The oil stains on the rubber sealing ring should be wiped clean to prevent aging and deterioration.

2. It is strictly prohibited to arbitrarily modify the structure, components, and internal wiring of explosion-proof cameras. The fastening bolts must not be arbitrarily replaced or missing. The excess elastic sealing gasket and metal gasket of the inlet and outlet must be kept in the factory sealed state, and the compression nut should be tightened to seal the inlet.

3. Live maintenance of electrical equipment and circuits is prohibited in explosive hazardous areas, and scheduled power transmission and power outages are prohibited. And a warning sign should be hung at the power outage location stating "No closing allowed when someone is working". During maintenance, if the explosion-proof camera is removed to a safe area, the power cable ends of the equipment on site should be explosion-proof and strictly prohibited from being powered on.

4. During daily operation, maintenance, and inspection, it is advisable to avoid opening the explosion-proof camera casing as much as possible. If it is necessary to open it, the power should be cut off first. If the explosion-proof shell is opened, the explosion-proof surface should be properly protected and not damaged. During maintenance, the explosion-proof surface should be placed upwards and not directly in contact with the ground. After cleaning, the explosion-proof surface should be coated with phosphating paste or 204 anti rust oil.

5. All explosion-proof cameras should establish equipment records, from equipment installation, commissioning, operation, maintenance, to equipment explosion-proof degradation and scrapping. Various technical data from different periods should be collected, organized and archived, and numbered one by one on the equipment.