PREN 1906 : DRAFT 2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
  4.1 Coding system
       4.1.1 General
       4.1.2 Category of use (first digit)
       4.1.3 Durability (second digit)
       4.1.4 Door mass (third digit)
       4.1.5 Fire resistance (fourth digit)
       4.1.6 Safety (fifth digit)
       4.1.7 Corrosion resistance (sixth digit)
       4.1.8 Security (seventh digit)
       4.1.9 Type of operation (eighth digit)
  4.2 Example of classification
5 Requirements
  5.1 General
  5.2 Check of spindle and fastening elements
  5.3 Rotational torque strength
  5.4 Axial strength of lock furniture or latch furniture
       and fixing
  5.5 Free play and safety
       5.5.1 Requirement for free play
       5.5.2 Safety requirements
  5.6 Free angular movement or misalignment
  5.7 Torque of return mechanism
       5.7.1 General
       5.7.2 Unsprung and spring-assisted lever handles
       5.7.3 Unsprung knobs
       5.7.4 Spring-loaded lever handles or knobs
  5.8 Durability of mechanism
  5.9 Repeat test of axial strength of lock or latch furniture
       and methods of fixing
  5.10 Repeat test of free play measurement
  5.11 Repeat test of measurement of free angular
       movement or misalignment
  5.12 Repeat test of torque of return mechanism
  5.13 Axial strength for safety furniture (optional)
  5.14 Corrosion resistance
6 Tests - Sequence and test
  6.1 Test sequence
  6.2 Test apparatus
       6.2.1 Fixing to a test block
       6.2.2 Apparatus for strength tests
       6.2.3 Apparatus for endurance test
7 Test methods
  7.1 General
  7.2 Acceptance conditions
  7.3 Performance tests
       7.3.1 Check of spindle and fastening elements (Test 1)
       7.3.2 Axial strength of lock or latch furniture and
              fastening elements (Test 2)
       7.3.3 Free play and safety (Test 3)
       7.3.4 Free angular movement or misalignment (Test 4)
       7.3.5 Torque of return mechanism (Test 5)
       7.3.6 Durability of mechanism (Test 6)
       7.3.7 Repeat test of axial strength and methods of
              fastening (Test 7)
       7.3.8 Repeat check of free play (Test 8)
       7.3.9 Repeat measurement of free angular movement
              (Test 9)
       7.3.10 Repeat test of torque of return mechanism
              (Test 10)
       7.3.11 Axial strength and method of fastening of special
              safety furniture (Test 11 - optional)
       7.3.12 Rotational strength (Test 12)
  7.4 Corrosion resistance (Test 13)
8 Marking
Annex A (normative) - Requirements for security lock furniture
        for use on burglary resistant doors
  A.1 Introduction
  A.2 Requirements
       A.2.1 Design requirements
       A.2.2 Performance requirements
  A.3 Test methods
       A.3.1 Test parameters
       A.3.2 Pre-checks (Test A.1)
       A.3.3 Plate strength (Test A.2)
       A.3.4 Strength of fastening elements (Test A.3)
       A.3.5 Resistance to attack by drilling (Test A.4)
       A.3.6 Resistance to attack by chisel (Test A.5)
       A.3.7 Strength of plug protection plate (if fitted)
              (Test A.6)
  A.4 Classification
  A.5 Marking
  A.6 Fixing instructions
Annex B (informative) - Test apparatus illustrations
Annex C (normative) - Requirements for lock and latch furniture
        for use on smoke control and fire resistant door
        assemblies
  C.1 General
  C.2 Classification for smoke control and fire resistant
       Grades A, B and C
  C.3 Additional requirements for fire resistance
       classification Grade C with fire proof core
  C.4 Tests
       C.4.1 Fire resistance
       C.4.2 Smoke control
  C.5 Test report
Annex D (informative) - Flow charts of test procedures
Bibliography

Describes test methods and requirements for spindle and fastening elements, operating torques, permissible free play and safety, free angular movement and misalignment, durability, static strength and corrosion resistance for sprung and unsprung lever handles, knobs for doors, push pads and similar in combination with backplates or roses operating latches.