Sprinkler Services

Sprinkler Head Testing

How many sprinkler heads do we need to test?

The minimum number of sprinkler heads that need to be tested will depend on the size of the building and the installation. This is in accordance with guidance detailed in the BS EN 12845, Annex K and LPC Sprinkler Rules for Automatic Sprinkler Installations, technical bulletin TB203.

BS EN 12845, Table K1 specifies the minimum number of sprinkler heads to be removed for testing, based on the size of the installation. The table below is detailed in BS EN 12845, Table K1 and details this requirement.

Total number of sprinklers within installation or System Number of sprinklers to be removed & inspected
Less than or equal to 5,000 20
Less than or equal to 10,000 40
Less than or equal to 20,000 60
Less than or equal to 30,000 80
Less than or equal to 40,000 100

               

With reference to mixed batches of sprinkler heads

Testing smaller batches can still be worthwhile and can detect problems, however, confidence in the validity of the results can be somewhat reduced because of the smaller sample size.

The FPA suggest that where possible, batches of sprinkler heads should be comprised of heads of the same make and model. Heads with of a range of conditions (e.g. environmental ageing) should be selected as far as possible.

Where sites use multiple makes and models of heads, ideally, batches of 20 heads of each make and model should be submitted for testing.  If in doubt, The FPA would be happy to discuss site-specific cases to agree on a practicable testing regime.

To find out more about how we can assist you with any of our sprinkler services please fill out the form below, email us on sprinklers@thefpa.co.uk or call on 01608 812 537

Quote

"We regularly use the Fire Protection Association to evaluate the condition and operational performance of sprinkler heads, their service is both efficient and cost effective. The knowledge and experience of their technicians shows in the detailed report which receives great feedback from both our engineers and our clients"

Paul Berry

Sales Director, Johnson Controls, Fire Suppression UK & Ireland

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