Regulations on medical gas system alarms

Medical gas is what we often call medical air, medical oxygen, negative pressure suction, carbon dioxide, nitrogen, laughing gas, etc. They will be delivered to operating rooms, ICUs, emergency rooms, wards and hyperbaric chambers to treat and rescue patients. Earlier, hospitals used gas cylinders to store and use medical gases, but they were restricted by the site and personnel handling, as well as the heavy pressure of equipment management and maintenance. Now conventional medical gas projects can save the manpower and storage space required for transporting gas cylinders. Only qualified medical gases need to be transported to the gas terminal through pipelines and connected to the equipment to complete the gas supply and use, effectively improving the work efficiency and gas safety of medical staff.

Generally speaking, a complete set of medical gas systems consists of four parts: gas stations, gas transmission pipelines, monitoring and alarm devices, and gas terminals. There are two reasons for setting up a monitoring and alarm system. One is to track and monitor the data of each link in the production, transportation and use of medical gases, without missing any minor problems. The other is to sound an alarm to warn, and at the same time, pass accurate guidance information to management personnel in a timely manner.

To consider all the above issues and implement them in place, it is necessary to comply with the relevant regulations on medical gas system alarms; the specific contents are as follows;

        1. Including medical gas source equipment, each monitoring sampling point should have an independent alarm display, and should continue until the fault is resolved;

        2. The sound alarm should be activated unconditionally, the sound pressure level at 1m should not be less than 55dBA, and there should be a temporary mute function;

        3. The visual alarm should be clearly distinguishable at a distance of 4m, a viewing angle of less than 30. and an illumination of 100lx (lumens);

        4. The alarm should have an alarm indicator fault test function and a power-off recovery self-start function. It should be able to alarm when the alarm sensor circuit is broken;

        5. Each alarm is marked separately to clarify its metering area and monitoring content;

        6. Set an emergency backup power supply for the power supply of the gas source alarm and the area alarm.