faq - MOEFA
As per NBC 2016, fire alarm features include MOEFA (Manually Operated Electronic Fire Alarm) and Automatic Fire Detection.
Manual Call point system: The manual call point system is a reliable method for fire detection, free from false alarms common in smoke detectors. These call points are strategically placed throughout buildings. When occupants detect a fire, they can activate the nearest call point, triggering a series of automatic actions:
1. The control panel displays the call point’s location and zone, accompanied by a voice alarm detailing the emergency location.
2. Speakers in the activated zone, adjacent areas, and maintenance personnel cabins broadcast the emergency location message.
3. The activated area’s escape lighting activates, and access control systems deactivate.
This automated response aids personnel in providing timely support, allowing affected occupants to escape and take necessary actions while minimizing disruption to others.
If occupants haven’t activated the manual call point but a fire is detected through other means, safety personnel can activate the virtual call point using the dedicated page, which is linked to the physical call points installed in the building.
Talkback system :
When occupants require emergency assistance, they can activate the call button. Upon pressing this button, the control panel will indicate the caller’s location and activate a ringtone. Support personnel can then accept the call and establish two-way voice communication to facilitate interaction.
PA System :
Moreover, in situations where specific areas of the building are under emergency threat, security personnel have the option to select targeted speakers for addressing the emergency. The control panel offers the flexibility to choose targeted speakers, zonal speakers, or address all speakers as needed.
The Airlight system complies with integrity standards, featuring cable fault monitoring, individual device health monitoring, and automatic alert and isolation mechanisms to ensure continuous usability.
Understand the type of building.
Refer to NBC2016, part 4, Table 7. On our Code page.
Whether only MOEFA or with Fire detection.
MOEFA involves MCP, PA speaker, and Talkback speaker.
Understand the function of each device.
Mark MCP, Talkback, and speaker with beacon.
Place MCP at a height of 1. 2 mtr, Talkback at a height of 1.5 Mtr and Speaker with light flasher at height of 2 mtr .
Avoid flush mounting of these devices. MCP occupant should be in a position to see the MCP from a long distance.
For the convenience of user, it shall be mounted at a height 1.5 mtr. User can press the button and speak. User mouth height and unit built in mic height will be almost same. Audio pickup quality will be good. Enclosure is made of ABS plastic. This enclosure plays a major role in amplifying the sound. When it is made flush mounting. audio quality and volume drastically reduces. Hence it is not advisable for flush mounting.
Wherever the Talkback speaker is placed. another speaker for PA application may not be necessary. Because talkback speaker also serves as a PA speaker.
Speaker with light shall be placed at the height of 2 mtrs . Since this unit built in with LED light. As per NBC escape lights height shall as low as possible
Fire department check list regarding MOEFA:
1. Does your infrastructure meet the minimal requirements specified in NBC 2016 Part 4, Table 7, including MOEFA and Automatic Fire Detection systems?
2. Is your MOEFA equipped with a manual call point system, Public Address System, and Talkback system as outlined in NBC 2016?
3. Does your Voice Evacuation System utilize Hindi, English, and vernacular languages through prerecorded messages, integrating with fire alarm panels for zone-specific alerts, as mandated by NBC 2016 Part 4 – 4.9.C?
4. Does your fire alert system include lighting strobes for hearing-impaired occupants, in compliance with NBC 2016 Part 4 – 4.9.D?
5. Is your fire alarm integrated with an electromechanical system to deactivate security access control, ensuring unobstructed escape for occupants and entry for rescue personnel as per NBC 2016 Part 4 – 4.9.B?
6. Is your emergency lighting system integrated with the fire alarm, illuminating escape routes, EXIT signage, and firefighting equipment, as required by NBC 2016 Part 4 – 3.4.7.1?
7. Do you maintain building plans and fire safety infrastructure documents readily accessible for fire rescue personnel during emergencies?
8. Are all cables used for fire safety fire retardant, capable of withstanding fire to some extent?
9. Are fire system cables routed separately from electric utility cables, ensuring a safe pathway?
10. Do all fire system cables and their connections comply with integrity standards, including fault monitoring against open and short circuits for fire, PA, Talkback, and lighting systems, as per regulations?
A smoke sensor is an instrument used to measure smoke density. It operates based on the photoelectric principle, utilizing an LED to illuminate the smoke chamber. However, over time, the LED’s illumination capability deteriorates. This phenomenon is similar to what we experience with LED lamps at home, where their brightness decreases after a few months, requiring replacement. The same applies to the LED in the sensor’s chamber and its associated circuitry. As they age, the sensitivity of the smoke detector gradually diminishes from its original level.
