Where should the medical gas master alarm be located?

The master alarm, called the central indicator panel in HTM 02-01, shows the condition of every medical gas supply system: plant faults, reserve levels and pipeline pressure faults. Its location matters because it is the alarm meant to be watched around the clock, unlike area alarms, which serve a single ward or department.

England: HTM 02-01 (2026)

• Central panel in a position with continuous 24-hour occupation, such as the main reception area; pressure-reducing station (PRS) alarms at the same position.
• The location should be risk-assessed, because local protocols and requirements differ.
• Repeater panels in other locations, showing all or some of the central panel information, so that action can be taken.
• Plant alarms also inside manifold rooms and plantrooms, so that plant testing can be followed on the alarm system.
• Plant alarms in a 24-hour occupied area and not within wards and departments, unless no such area exists, as in a hospice or small community hospital.
• Connection to the building management system (BMS) for monitoring only; the BMS should not replace the plant alarm system.

United States: NFPA 99

In the NFPA 99 (2021 edition) text reproduced in an NFPA committee input report, the master alarm system has two or more panels in at least two separate locations: one in the office or work space of the on-site person responsible for maintaining the medical gas and vacuum piping, and one in an area of continuous observation, such as the telephone switchboard or security office. A centralised computer system may replace one of the two panels if it meets the code. NFPA lists 2027 as the current edition, so check the edition adopted by the local authority having jurisdiction.

Portugal: ACSS ET 03/2006 (v.2024)

The ACSS specification asks for monitoring systems to be installed in a location that allows continuous observation and also in the other locations identified by ISO 7396-1, and for the vacuum and pressure-regulator alarms of each service to allow connection to the building automation system (SACE).

Ultra Controlo supplies master alarm panels, alarm relay panels for zones, valves and second-stage units, and the QuGas monitoring system; on ULTRAOX plants, all alarms are also on an interface for remote signalling.