Access control is used to identify an individual or vehicle and then validate their access to a site or area. This access will inform the behaviour of a physical barrier, preventing unwanted or unauthorised access to a site. Access control systems come in three variations: Discretionary Access Control (DAC), Mandatory Access Control (MAC), and Personnel Access (PA).
DAC allows a security manager or authorities responsible for critical national infrastructure to decide which individuals or stakeholders are allowed access to a specific location at a particular time.
Provisions must be made to minimise human error within this process so that security personnel do not become entirely or personally responsible for on-site access decisions. Depending on the category of security appropriate to the site, a two-stage verification process may be implemented prior to access being granted.
For example, if the same delivery supplier and vehicle access a site every day, verification for the vehicle alone may not be sufficient. With the very real threat of access using duress, the vehicle and driver may need to be separately verified upon each visit before access is granted.
MAC is more commonly utilised in organisations that require a heightened emphasis on security (i.e. the MOD or some utility sites). MAC doesn’t permit building owners on site to decide which visitors are granted facility access. Instead, only the custodian can manage access controls.
MAC will typically classify every visitor and provide them with identification that permits access via security, but with established guidelines and an additional vetting procedure. Only then will access be granted to allow a vehicle or person through a physical security barrier.
PA requires a security guard or custodian to vet and grant vehicles and drivers access on a case-by-case basis at the gate or barrier.
This is typically operated using a booking-in system and by assigning employees and regular visitors some form of ID card or trusted third party verification. Considerable opportunity for human error and access via duress tactics make PA the least secure access control method. So, site such as embassies or energy plants may use a sally-port system.
A sally-port system is an initial access control barrier which allows a vehicle to pass momentarily, before lowering behind. Then, a second ‘final denial’ barrier is raised to trap a vehicle into a search scenario. This can be used in conjunction with manual or automatic vehicle scanning before granting or denying a vehicle access. If a vehicle is denied access, provisions for a ‘turn-around’ lane need to be made to ensure that site traffic continues to move smoothly.
Can be integrated with a variety of access control methods to control authorised vehicles moving in and out of a restrcted site or area. High security bollards are perfect for high security access points in both urban and industrial areas. Systems must be CE Mark compliant (BS EN ISO 13849:2015) - safety and machinery iniatitive.
Guarantee a strong, resilient perimeter and secure sites from unauthorised access. Available as gates, turnstiles, road blockers or bollards and implemented to maintain the smooth running of site operations.
For larger vehicle-only entrances, vehicle barrier systems provide wide span, certified access control measures for the highest security applications.
For industrial access control, spans of up to 4.5 metres offer cost-effective security for large entrances and are tested to the highest security levels.
Single or twin-leaf door sets offer a range of secure and tested entry/exit doors. Security rated accessories and accredited fire-rated doors are also available.
Simple and cost-effective, high-security emergency access gates are suitable to be installed across the public realm or to protect industrial perimeters. Manually operated to eliminate the need for hydraulics and to reduce the risk of electrical failure, these gates are designed to offer access to authorised emergency vehicles or occasional vehicle access within pedestrianised areas.