EN 14458:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
  4.1 General use
  4.2 Firefighters' use
  4.3 Mesh
5 Performance requirements
  5.1 General
  5.2 Requirements for general use
  5.3 Additional requirements for firefighters' use
  5.4 General requirements for mesh visors
  5.5 Optional requirements
6 Testing
  6.1 Nominal values and tolerances
  6.2 Conditioning and sample numbers
  6.3 Visual inspection
  6.4 Practical performance test
  6.5 Electrical properties tests
  6.6 Radiant heat resistance test
  6.7 Radiant heat protection test
  6.8 Flammability test for firefighters' visors
  6.9 Resistance to extremes of temperature test for
       firefighters' visors
  6.10 Test for resistance to chemicals
7 Marking
  7.1 General
  7.2 Markings on visor
  7.3 Markings on means of fixing
8 Information
Annex A (normative) Taber abrasion resistance test method
      A.1 Apparatus
      A.2 Preparation of test pieces
      A.3 Test method
      A.4 Calculation and interpretation of results
Annex B (informative) Equipment list
      B.1 General
      B.2 Equipment list - firefighters
      B.3 Equipment list - Emergency teams/ambulance service
Annex C (informative) Uncertainty of measurement
      C.1 Test report and uncertainty of measurement
Annex ZA (informative) Relationship between this European Standard
         and the Essential Requirements of EU Directive 89/686/EEC

This document applies to visors designed specifically to be fitted to and/or used with helmets conforming to EN 443 when used by firefighters, or helmets which conform to EN 443 or prEN 14052 when used by ambulance and emergency services, as the situation dictates. They are intended to provide protection against the various hazards expected to be encountered in firefighting, ambulance and emergency service duties, except respiratory, smoke, and gas /vapour hazards.Three types of visor are described in this document. One provides protection against general hazards; the second additionally provides protection against heat and flame. The third type of visor incorporates mesh oculars, and is intended for use in very limited circumstances. This document also describes two forms for all three types of visors; face guards that provide both eye and face protection; eye guards that are shorter and effectively provide only eye protection.The requirements of this document do not apply to visors intended for use without a helmet. Such requirements are given in EN 166.Visors with corrective effect are excluded from the scope of this document.