I.S. EN 12053:2001

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
  3.1 A-weighted emission sound pressure level at the operator's
      position for the operational cycle L[pAZ]
  3.2 A-weighted sound power level in an operational cycle L[WAZ]
  3.3 Forwards operation
  3.4 Industrial and rough terrain truck families
  3.5 Idling
4 Installation and equipment
  4.1 Test environment
  4.2 Equipment and condition of the truck
  4.3 Position of the truck during measurement
      4.3.1 LIFT and IDLE conditions
      4.3.2 DRIVE condition
5 Operating conditions during measurement
  5.1 General
  5.2 Load of the truck
  5.3 Operation of the truck during measurement
      5.3.1 General
      5.3.2 LIFT condition
      5.3.3 IDLE condition
      5.3.4 DRIVE condition
  5.4 Trucks equipped with a cab
      5.4.1 Cab with an air conditioning and/or pressurized
            ventilating system(s)
      5.4.2 Cab without air conditioning or pressurized ventilating
            system(s)
6 Noise determination
  6.1 Instrumentation
  6.2 Microphone positions
      6.2.1 Microphone positions for determination of the sound
            pressure levels at the operator's position
      6.2.2 Microphone positions for determination of the sound
            power levels
  6.3 Measurements
      6.3.1 Measurements of sound pressure levels at operator's
            position
      6.3.2 Sound power level determination
7 Measurement uncertainties
8 Information to be recorded
9 Declaration of noise emission values
Annex A (Normative) Calculation of levels in an average operational
        cycle
      A.1 Calculation of the emission sound pressure level in an
          operational cycle
      A.2 Calculation of the sound power level for an operational
          cycle
      A.3 Time proportion factors of the operating conditions
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 98/37/EC
Annex ZB (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 2006/42/EC

Presents methods for determining the sound pressure level at the operator's position and the sound power level of industrial and rough terrain trucks.