Exhibition and conference venues: the same system, a different building every week
It sounds like the building changes with every event, and you have to show the system still covers it.
At an exhibition or conference venue, the Public Address Voice Alarm (PAVA) is maintained for a building whose layout, occupancy and acoustics change with every event, so a maintenance visit has to prove the system covers the space as it is now, not as it was commissioned.
What brings a venue operations manager to this page?
A build-up that put stand walls in front of loudspeakers, and nobody could say whether the hall was still covered. A licensing question about evacuation messaging into a hall at full capacity. A retender where the reports list visits, not readings. And Martyn's Law: an exhibition hall expected to hold 800 or more people falls in the enhanced tier of the Terrorism (Protection of Premises) Act 2025, with commencement expected in spring 2027 and no date set (SIA update, 11 September 2026), and the PAVA that already exists may be able to deliver the communication procedure. Can your existing system deliver the communication procedure?
Which standards apply to an exhibition or conference venue?
BS 7827:2019 covers large public buildings and venues and recommends a risk assessment dividing the venue into voice-alarm zones and emergency-sound-system zones (BS 7827:2019, Clause 4.1); a zone triggered by fire detection follows BS 5839-8:2023, a zone whose emergency broadcast is independent of fire detection follows BS EN 50849:2017. Event PA, paging and background music sit under BS 6259:2015; one system doing both jobs inherits both.
BS 5839-8 recommends servicing at intervals not exceeding six months, including a visual inspection for structural or occupancy changes that affect the design, which the maintainer reports to premises management (BS 5839-8:2023, Clause 40.1), and annual activities including every loudspeaker circuit impedance measured and compared with the previous year's (Clause 40.2). The commentary to Clause 40 explains that routine servicing is not a fresh design review: it confirms the system still works as handed over and reports what has changed around it, and the venue decides what corrective work to commission after a change.
When the system itself changes, a modification certificate is generally necessary once more than 5 % of loudspeakers are added or removed, the number of emergency loudspeaker zones changes, or the agreed cause-and-effect changes (Clause 41.3, Note 3). Like-for-like replacement is repair, not modification (Clause 41.2).
What does a maintenance visit have to prove in a venue that changes every week?
That coverage has survived the overlays. On Recommended and Comprehensive, every loudspeaker circuit is measured and compared with the year before, so drift is caught before it becomes a fault. Loudspeakers are checked for operation, orientation and condition, and changes since the last visit are recorded so your team has what it needs to decide, because the standard places that decision with the venue, not the maintainer.
More loudspeakers will not fix the room. Where the room is the limit, the model shows it, and shows where treatment or a different layout would do more than extra hardware. That modelling sits under consultancy.
Where this has been done
London Olympia. Voice alarm and PA systems at Olympia London, serving complex multi-zone event environments with high and variable occupancy. Olympia's own staff reconfigure the system for each event and each exhibition space, whatever the size or type of event; ProAudium provides the complete maintenance service for it.
Brighton Centre. Safety sound and legacy infrastructure compliance for Brighton's principal conference and entertainment venue: a site-wide communications system installed in 2025 and designed to expand as areas are refurbished, and BS 6259 compliance across large-format spaces with high public footfall. ProAudium installed that system in 2025. The venue's own technical staff run events across its spaces on it, with annual maintenance and technical support from ProAudium.
Which service does an exhibition venue need first?
Scheduled maintenance that records the building as it changes: see the three maintenance levels. When the zones or the loudspeaker count change, the addition and its modification certificate are upgrades and additions.
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