the expert in blast-resistant counters
In situations where counter staff are vulnerable to attack, combining blast resistance with intruder and ballistic resistance is a logical step. After all, an attacker or robber employing a number of different methods also needs to be kept at bay. aalbers|wico has expert knowledge of all disciplines in the field of structural blast security. We manufacture, supply and install blast-resistant counters precisely in accordance with your specifications. If you wish, they can also be offered in combination with intruder-, ballistic- and fire-resistant properties.
tested in practice
We not only calculate the resistance level of our blast-resistant counters on paper - we test it in practice too, in our own test centre. Here we check whether the counters meet the required level of mechanical resistance (as described in the European standards) or the desired level of protection (as specified in the US GSA standard).
Our counters are based on standards such as EN 13123, 13124 and 13541, the US GSA guidelines, and ISO 16933 and 16943, but we can also go one step further. If stipulated in the Schedule of Requirements, we can supply a counter offering the actual level of resistance you need. The official standards form the starting point here, but the counter undergoes further testing on the basis of additional criteria.
Find out more about standards for blast-resistant counters in our knowledge centre.
In our test centre we can examine the resistance of a counter under virtually all conditions using realistic tests. This is possible as we have the space to carry out open field tests and our facilities also include a shock tube.
Find out more about testing methods for blast-resistant counters in our knowledge centre.
During field tests and shock tube tests, the resistance class of a blast-resistant counter is defined on the basis of various factors: these include the weight of the explosive, the distance at which the explosion takes place, the peak pressure, impulse and duration of the pulse of the explosion and whether there is any splintering.
Find out more about resistance classes for blast-resistant counters in our knowledge centre.