(1) Enhance the supervision and management of SF6 gas. All newly purchased SF6 gas must include the manufacturer’s name, bottling date, batch number, and a quality inspection report. The purchasing unit should establish an effective acceptance system and inspect the gas according to established regulations. Only qualified SF6 gas should be stored upright in a cool, dry, well-ventilated, and open area designated specifically for this purpose. Regular checks should also be conducted to ensure storage conditions remain safe and compliant.
(2) Ensure proper ventilation in rooms housing SF6 electrical equipment. Since SF6 is asphyxiating and heavier than air, it can accumulate in low-lying areas such as cable trenches. According to DL/T 5035-2004, mechanical ventilation systems must be installed in SF6 equipment rooms and maintenance areas. The indoor SF6 concentration should not exceed 6000 mg/m³, and strong ventilation is essential. Before entering cable trenches, adequate ventilation must be carried out, and personnel should be monitored to quickly respond to any potential hazards.
(3) Before operating SF6 electrical equipment, check the humidity and air content of the gas inside the chamber. High humidity levels can lead to the formation of toxic by-products when combined with SF6 decomposition products under arc conditions, which may reduce insulation performance. If significant changes in humidity are detected, the equipment should be reviewed and possibly shut down if the humidity exceeds acceptable limits.
(4) Conduct regular SF6 leak detection on electrical equipment. Maintain the integrity of monitoring systems, including pressure gauges and density meters. If a pressure drop or alarm is detected, perform leak testing immediately. Identify the source of the leak, assess the fault, and implement appropriate repair measures to prevent further issues.
(5) Inspect SF6 gas before disassembling equipment. Based on the level of toxic gases present, take necessary safety precautions. Maintenance staff should wear protective clothing and use gas masks. After opening the equipment cover, personnel should temporarily leave the site for 30 minutes before returning. Recycle SF6 gas using a purification device instead of releasing it into the atmosphere.
(6) Strengthen staff training on safety procedures and the use of protective equipment. For example, when dealing with outdoor SF6 leaks, approach from the upwind side and wear long-sleeved overalls, a respirator, and special protective gear. Promote a culture of self-protection and improve the overall safety awareness of all personnel involved in SF6-related tasks.
(7) When recycling SF6 gas, ensure that ventilation systems are operational to maintain clean air at the work site. Rinse the gas compartment with high-purity nitrogen or dry air at least twice to remove decomposition by-products. After opening the SF6 compartment, evacuate the area for 30 minutes to allow residual gas and decomposition products to dissipate.
(8) Remove solid decomposition products from the SF6 gas compartment using a vacuum cleaner capable of filtering particles as small as 0.3 μm. Personnel working indoors should wear protective clothing, gloves, goggles, and an oxygen breathing apparatus. Ensure good ventilation throughout the process. After completing the task, workers should thoroughly wash their bodies to minimize exposure risks.
(9) Properly dispose of used vacuum cleaner filters, gas mask adsorbents, activated alumina, molecular sieves, and baking soda. These materials should be placed in durable plastic bags and buried deep underground, or mixed with soda powder and waste before being poured into water and left for 48 hours. Follow local waste disposal regulations to ensure environmental safety.
A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. In a Firewall PC, this functionality is dedicated to protecting the connected network from external threats such as hackers, malware, and unauthorized access.
Benefits of a Firewall PC with TPM
Enhanced Security: The combination of a firewall and TPM provides multiple layers of security, making it difficult for attackers to penetrate the network or access sensitive data.
Data Protection: Ensures the confidentiality, integrity, and availability of data by encrypting it and preventing unauthorized access.
Compliance: Can help organizations meet regulatory requirements for data security and privacy.
Reliability: The hardware-based security features of TPM and the dedicated firewall functionality make the device more reliable than software-based security solutions.
In conclusion, a Firewall PC with TPM is a powerful security solution that offers enhanced protection for networks and systems. It provides a combination of firewall functionality and hardware-based security features to safeguard against a wide range of threats and ensure the integrity and confidentiality of data.
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