Liquid Leak Detection explained and why it matters!
Did You Know?
Irish Standard 3218:2024 has moved away from the option to assess the type of visual device used in a Fire Detection & Alarm System (FDAS)
What does this mean?
The new IS3218:2024 regulation requires that any device used as a visual indication of an alarm must be a VAD (Visual alarm device) and does not allow for the use of standard beacon or indication devices.
A standard sounder beacon or VID (visual indication device) was allowable under the preceding regulations unless the device was the primary source of indication of an alarm. In that case it was required to be a VAD.
Under the revised standard, there is no allowance for supplementary indication, therefore all visual apparatus must now VAD’s. If standard VID’s are used then the system under IS3218:2024 is considered non-compliant.
A VAD has specific characteristics relating to its visual output which relate to the area that the device provides indication. As such when employing a VAD you must identify the area where visual indication is required, review the available VAD’s and confirm which is best to achieve this.
Furthermore, under Technical Guidance Document (TGD) “M” 2022 there is a requirement to have visual indication of an alarm in the following areas:
- Accessible Sleeping Accommodation
- Accessible Sanitary Facilities
- Accessible Changing and/or Showering Facilities
As such a VAD should be located in each of these locations.
Top Tip:
The impact of VAD’s should not be underestimated as they require significant additional current from the system to drive them, as such any individual designing systems incorporating VAD’s should ensure that they carry out a loading review of the system to ensure that the system can function correctly when required to in an emergency situation and not fail.
Need a Fire Detection & Alarm System design quotation? Why not contact us today on 051 448774 or email info@guardianfire.ie
Author: Brendan Stamp BBs (Hons), BSc (Hons)
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