---

Threats

• Personal danger and kidnapping

• Theft - Espionage

• Sabotage - Assaults

• Vandalism

Security analysis

• Assets - Weak spots analysis

• Risk assessment and remaining risk (failure areas and insurance) t t

Security measures

• Technical (mechanical/electronic) measures (Delay time)

• Organisational measures (Intervention time, follow-up of the alarm)

Figure G.1 — Elements of a security analysis

Practice shows that, when detection systems are used in outdoor areas, it is necessary in most cases to inspect the local circumstances and, if necessary, to perform test trials once a system has been selected. In order to protect an object effectively, the resistance time should be equal to or greater than the time required by the security personnel from the time of the alarm until the arrival at the security post.

The formula for the safety factor is:

SF = WZ / RZ

SF is the Security factor (Sicherheitsfaktor);

WZ is the Delay time of the perimeter system (Widerstandszeit der UmschlieRung);

RZ is the Reaction time of the security personnel (Reaktionszeit des Sicherheitspersonals).

For an effective outdoor security system, the safety factor should be more than 1. The resistance time depends among others things on the tools that are used to breach the barrier.

G.2.2 Basic principles of the detection systems

Table G.1

G.2.3 Comparison of detection systems

7. 2 — Comparison of detection systems

G.2.4 Summary

Good analyses and demand oriented planning with users, installers and security personnel ensure the optimization of various systems in closed security concepts. For all applications competent specialist companies are available to provide assistance regarding the following points:

Threat and vulnerability analysis;

Safety concept;

Taking into account the topography, weather conditions at the location;

Organizational design of the security department;

Consideration of relevant regulations, rules and standards;

Appropriate and proper decision making about the perimeter surveillance systems;

Interaction of different site systems;

Appropriate or proper distribution of reporting lines/alarm sectors, e.g. overlap;

Description/explanation of technical requirements;

Appropriate or proper technology;

Documentation of taken measures;

Maintenance and repair.

G.3 Classification for burglary resistance

G.3.1 Recommendations for the assessment of the resistance class

The following table can be used for decision making regarding the resistance class to be selected for building elements (windows and doors). The sum of the points of the individual evaluation of the object to be protected and secured results in the classification in a recommended resistance class as listed in the Table G.4.

Table G.3

Given the score, which represents the assessed risk, it is recommended to use windows or doors with the following resistance class:

Table G.4

G.3.2 DIN-Standards for burglar resistance

The European Standards ENV 1627:1999, ENV 1628:1999, ENV 1629:1999 and ENV 1630:1999, describe a classification of hazards and the associated technical requirements.

NOTE This group of standards have been superseded by EN 1627:2011, EN 1628:2011, EN 1629:2011 and EN 1630:2011 respectively.

The application and selection of a resistance class is the responsibility of the client.

As possible decision support, the requirements of the score table can be used, from which the users get information on which resistance class should be selected.

In addition, for special cases, the police should also be consulted to assess the relevant risk.

Furthermore, the installation of a burglar-resistant component requires special qualification. Depending on the resistance class, certificates are required, in which the check of the complete building component is guaranteed.

Table G.5

Annex H

Pictures of fences, gates and entrance barriers

H.1 Introduction

WARNING: The information shown is partly based on the information from the USA. The European vehicle fleet is not compatible with the American fleet.

This annex is a non-exhaustive list of the different sorts of fences, supplementary accessories and gates and entrance barriers that can be found around f.i. private, commercial, industrial, military sites or installations.

The first draft of this aannex originated from France.

The first sort of fence is more psychological than material: white line (for example in the middle of the road).

H.2 Different sorts of fences

H.2.1 Vegetable fences

Vegetable fences with thorns more or less effective or dangerous (Pyracanta, Berberis, etc.). The principle is to obtain a very dense edge with thorns.

b)

7. 1 — Vegetable fences

H.2.2 Wood palisade

Wood palisade can be made from wood of different qualities; it is on the market in complete panels and posts or as panels to be assembled (planks, beams, etc.) and posts.

Figure H.2 — Wood palisade

H.2.3 Walls

Concrete reinforced

Figure H.3 — Concrete reinforced

Stone

a) b)

:r n

Figure H.4 — Stone

Breezeblock

Figure H.5 — Breezeblock

Some of the breezeblocks have more technical features, such as being bulletproof or shockproof to vehicles.

They can be provided with features such as a system on top to avoid somebody to throw a grapnel to climb over the wall (for example in a prison)

.

H.2.4 Metallic fences

Chainlink fences

Figure H.6 — Chainlink fences

By roll (25 m to 50 m) with diamond or rectangular mesh. They can be welded or not welded. Different diameter of wires are used.

Welded mesh fences

Figure H.7 — Welded mesh fences

Various wires diameters are used. More important is the fact that it is a welded mesh panel. Different sizes of mesh aperture are used.

Palisades

Panels of fences with bars in place of wire. They can be tubes or full bars.

Figure H.8 — Palisades

H.2.5 Combinations of systems

There are some case where the fence is the result of the combination of two or more different systems.

Vegetable Fence + Razor wire

b)

Vegetable Fence + metallic fence

c)

Figure H.9 — Combinations of systems that include a vegetable fence

H.3 Supplementary accessories

H.3.1 Razor wire

a) b)

Figure H.10 — Razor wire

H.3.2 Sharp pins

a) b)

Figure H.11 — Sharp pins

H.4 Gates and entrance barriers

H.4.1 Gates

Swing Gates

Sliding Gate

Figure H.12 — Swing Gates

a)

Figure H.13 — Sliding Gate

Cantilever Gate

Figure H.14 — Cantilever Gate

H.4.2 Road obstacles

Bollard

A bollard enables pedestrians to pass through unobstructed while effectively stopping heavy vehicles at high speed.

Figure H.15 — Bollard

Road Block

A road block blocks the road within 2 s to 4 s and is designed to remain functional after a collision.

Figure H.16 — Road Block

Wedge barrier

A wedge barrier effectively blocks the road within 3 s, decreasing to 1 s with the assistance of an accumulator. Wedge barriers are also installed in city centres as the foundation is only 40 cm deep.

Figure H.17 — Wedge barrier

Crash gate

A crash gate is a solid gate that closes the site and effectively stops heavy vehicles travelling at high speeds.

Figure H.18 — Crash gate

Barriers lift system

A barriers lift system consists of a boom barrier that quickly rises out of the ground and blocks the entire width of the road within 4 s. The barrier completely destroys the chassis of a vehicle that tries to gain access by force. Lowered into the ground, it fulfils class 60 bridge security requirements to withstand extremely heavy vehicles.

Figure H.19 — Barriers lift system

Defence barrier

A defence barrier is a boom barrier that effectively stops heavy vehicles travelling at very high speeds.

Figure H.20 — Defence barrier

Tyre killer

A tyre killer consists of pointed barriers that effectively block a road within 2 s. These barriers completely destroy the tyres, axles and suspension of a vehicle that tries to gain access by force.

Figure H.21 —Tyre killer

Annex I

CEN Workshop Agreement CWA 16221

This annex gives the Scope and the Table of Contents of CWA 16221:2010 'Vehicle security barriers - Performance requirements, test methods and guidance on application' [4].

This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the constitution of which is indicated in the foreword of this Workshop Agreement.

The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the National Members of CEN but neither the National Members of CEN nor the CEN Management Centre can be held accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation.

This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members.

This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

Scope

This CWA specifies a classification system for the performance of a vehicle security barrier (VSB) when subjected to a single horizontal impact.

This CWA specifies two methods for determining the performance classification of a VSB:

the vehicle impact method for all types of VSBs using a test vehicle classified in accordance with EC Directive 2007/46/EC [15] and registered for use in Europe;

the design method for all types of VSBs.

This CWA refers to alternative test methods for determining the performance classification of a VSB (see Annex A).

This CWA also provides guidance for the selection, installation and use of VSBs (see Annexes D to M).

This CWA also describes the process of producing “operational requirements” (see Annex N).