Museum and gallery sprinkler systems
A refurbishment, a new gallery, an insurer asking about suppression, or a collection moving into a building that was never designed to hold it.
- ISO 9001 and LPCB approved, the certification insurers look for
- BS EN 12845
- Free survey, fixed price in writing, no travel charge
What is different about museums and galleries
Annex A of BS EN 12845 classifies museums as at least Ordinary Hazard Group 2, a step above hospitals and offices, which surprises people who think of a gallery as a quiet room with pictures in it. What actually drives the decision in a museum is rarely the classification. It is the fear of water, and that fear is usually pointed at the wrong risk.
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A sprinkler is not a deluge, and this is the part worth understanding
Every head is held shut by its own heat sensitive bulb. Only the heads over the fire open, typically one or two, and they discharge a fraction of what a firefighting hose delivers through a door or a window at whatever the crew can reach. The choice in a museum is not water or no water. It is a measured amount of water, early and local, against an uncontrolled amount later.
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Accidental discharge is the real worry, and it has an answer
A pre-action arrangement keeps the pipework dry and will not let water in until a detection system has also operated, which removes the burst pipe and the knocked head from the equation. It costs more and it adds a second system to maintain, and for an irreplaceable collection that is usually a trade worth making. It is a design decision, made from the building and the collection, not from a catalogue.
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Stores are a different building from the galleries
The public rooms are sparse by design. The stores, the workshops and the conservation spaces are dense, and they hold the things not currently on display. Annex A is explicit that its classifications are minimums, and a packed store can sit well above the gallery it serves. Protecting only what the visitors see is a common and expensive way to be under-designed.
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Listed fabric changes how it is installed, not whether
Concealed pipework, sidewall heads, routes that follow existing services, and a conversation with the conservation officer before anything is drawn. It makes the installation slower and more careful. It does not usually make it impossible, and a scheme designed around the fabric from the start is far cheaper than one redesigned after a refusal.
What we do for these buildings
- BS EN 12845 Sprinkler servicing The full BS EN 12845 routine, from the weekly gauge and alarm check to the annual service. Fire sprinkler servicing and maintenance
- BS EN 12845 and BS 9251 Design and installation New systems, extensions and upgrades, designed, installed and commissioned. Fire sprinkler system design and installation
- BS EN 12845 Sprinkler tanks The water supply behind the system, inspected, cleaned and replaced when it is past it. Sprinkler tank service, maintenance and replacement
- Any hour 24/7 emergency A leak, a failed pump or a discharged head, answered out of hours. Emergency sprinkler and riser repair
Museums and galleries: questions
Will a sprinkler system soak the collection if it goes off?
Only the heads directly over a fire open, and they open one at a time as the heat reaches each bulb. In most real incidents that is one or two heads over the seat of the fire. Compare that with what a fire and rescue service delivers once it is alight enough to need them, which is orders of magnitude more water, aimed by people who cannot see what is behind the smoke. The damage arithmetic is not close.
Can we have a system that cannot discharge by accident?
A pre-action system is the usual answer. The pipes stay dry and empty, and water is only admitted when an independent detection system has operated as well as a head. Two things have to be true before anything gets wet, which rules out the burst pipe, the corroded fitting and the head knocked by a ladder. It is more system to design and more to maintain, and for an irreplaceable collection that is normally the right trade.
Our building is listed. Is this going to be refused?
Usually not, but the route matters. Schemes get refused when they are drawn as if the building were a warehouse and then presented to a conservation officer as a finished design. Schemes get approved when the constraints are in the brief from the start: where pipework can run, what can be concealed, which finishes cannot be disturbed. Talk to the conservation officer before the design, not after.
What does maintenance look like in a gallery that stays open?
Most of it is invisible. The weekly and monthly checks are non-intrusive and happen before opening. The annual needs the system isolated, and BS EN 12845 asks that only one zone is down at a time and for the shortest time the work needs. In practice that means a zone at a time, out of hours, with the galleries told what their fire strategy is running on while it is down.
Worth reading first
- Sprinklers How a fire sprinkler system actually works Each sprinkler head is held shut by a heat-sensitive glass bulb or fusible link, so only the heads directly over a fire open. The resulting flow drops the pressure in the pipework, which starts the pump and operates the alarm.
- Compliance What your insurer actually wants from a sprinkler system Insurers price a sprinkler system as risk mitigation only if they can trust it. LPCB approval of the contractor and an unbroken maintenance record are the two things that make it count.
- Sprinklers Sprinkler servicing intervals under BS EN 12845 BS EN 12845 sets a weekly check the site can do itself, a quarterly flow switch and alarm test, and an annual service that includes the pump run under flow.
The published documents behind this page
Every interval and threshold on this page comes from one of these. Links go to the publisher, not to a copy of the document.
- BS EN 12845Fixed firefighting systems. Automatic sprinkler systems. Design, installation and maintenance
The standard commercial and industrial sprinkler systems are designed, installed and maintained to. It sets the weekly, monthly, quarterly and annual routines.
BSI
British Standards are copyright documents and most are bought rather than read free. We hold the ones we work to. If you need to know what one of them says about your building, ask us rather than buying it.
Approved, and audited on a schedule.
Two certifications, and the first one is the reason we could apply for the second. ISO 9001 is a precondition for LPCB approval, so this is a sequence rather than a collection.
ISO 9001:2015
Certified by BRE Global, accredited by UKAS
An audited quality management system. It means the way a job is planned, recorded and signed off is itself inspected by somebody independent, on a schedule.
LPCB approved
Loss Prevention Certification Board
The approval UK insurers look for on sprinkler work. A system installed by an LPCB approved contractor counts as genuine risk mitigation on your policy; one installed by anybody else may not.
Working to BS EN 12845, BS 9251 and BS 9990. If your insurer or fire risk assessor wants the certificates themselves, ring us and we will send them over.
Tell us the building. We will tell you what it is due.
No survey fee to find out where you stand. Describe the site and we will tell you which intervals apply and what the visit involves.