TS EN 12845+A2

TS EN 12845+A2 is a standard for the design, installation and maintenance of fixed automatic sprinkler systems, with a clear focus on both fire protection and life-safety considerations. It provides a technical framework for understanding how sprinkler systems used in buildings and industrial premises are planned, installed and maintained.

What the standard covers in practical terms

The standard applies only to sprinkler types specified in EN 12259-1. In general technical terms, a sprinkler system works as an integrated arrangement of a water supply, pipework, control and alarm devices, sprinkler heads and related components, all intended to limit fire growth by discharging water in a controlled way. That is why the relationship between sprinkler type, hazard classification, water supply and system layout is central to the subject matter.

Its rules and recommendations may also be applied to additions, extensions, repairs and other modifications to an existing sprinkler system. At the same time, water spray or deluge systems are outside its scope. This makes the document specifically about fixed sprinkler-based fire suppression rather than other water-based fire control arrangements.

Why maintenance and build details matter

For sprinkler systems, maintenance is as important as initial design, because reliable performance depends on the system being ready to operate when needed. The standard also defines the minimum building details necessary for proper system operation and frames installation and testing as part of the overall technical lifecycle. In general engineering practice, key concerns include accessibility, mechanical integrity, compatibility of components and continuity of the water supply.

• Provides a technical basis for fixed sprinkler systems in buildings and industry.
• Applies only to sprinkler types identified in EN 12259-1.
• Covers hazard classification, water supplies, components, installation, testing, maintenance and extensions of existing systems.
• Does not apply to water spray or deluge systems.
• Also addresses additions, repairs and other modifications to existing sprinkler installations.