UL 558
Standard for Industrial Trucks, Internal Combustion Engine-Powered

DETAILS
Edition Number:10SCC Approved:--
Edition Date:2012-01-10DOD Approved: --
Price Code:BANSI Approved: 2017-08-23
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover the fire safety aspects of industrial trucks with internal-combustion engines, such as tractors, platform-lift trucks, fork-lift trucks, and other specialized vehicles for industrial use. These requirements do not cover other possible safety aspects of such equipment.

    1.2 These requirements do not cover farm or road vehicles or automotive vehicles for highway use.

    1.3 The Fire Safety Standard for Powered Industrial Trucks Including Type Designations, Areas of Use, Conversions, Maintenance, and Operations, NFPA 505, identifies internal combustion engine powered industrial trucks as follows:

    Types G, D, LP, CN, G/CN, and G/LP – A unit powered by gasoline (G), diesel (D), LP-gas (LP), compressed natural gas (CN), either gasoline or compressed natural gas (G/CN), or either gasoline or liquefied petroleum gas (G/LP), that has minimum acceptable safeguards against inherent fire hazards.

    Types GS, DS, LPS, CNS, GS/CNS, and GS/LPS – A unit powered by gasoline (GS), diesel (DS), LP-gas (LPS), compressed natural gas (CNS), either gasoline or compressed natural gas (GS/CNS), or either gasoline or liquefied petroleum gas (GS/LPS) that, in addition to meeting all the requirements for Types G, D, LP, CN, G/CN, and G/LP, is provided with additional safeguards to the exhaust, fuel and electric systems.

    Type DY – A diesel-powered unit that has all the safeguards of Type DS units and, in addition, any electric equipment is completely enclosed and equipped with temperature limitation features.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Terminology
          • 6 Reference Standards
          • 7 Samples
        • CONSTRUCTION
          • TYPES G, D, LP, AND CN
          • 8 Electrical Systems
          • 9 Exhaust Systems
          • 10 Fuel Systems – Gasoline and Diesel
            • 10.1 Tanks and pumps
            • 10.2 Fuel lines, tubing, and fittings
            • 10.3 Nonmetallic parts
            • 10.4 Corrosion resistance
            • 10.5 Carburetors and backfire preventers
          • 11 Fuel Systems – LP & CN-Gas
            • 11.1 General
            • 11.2 Fuel containers
            • 11.2A LP Gas
            • 11.3 Fuel lines and fittings
            • 11.3A CN Gas
            • 11.5 Vaporizers
            • 11.6 Safety-control and -relief devices
            • 11.7 Nonmetallic parts
            • 11.8 Corrosion resistance
          • 12 Air Conditioning and Heating Systems
          • TYPES GS, DS, LPS, AND CNS
          • 13 Electrical Systems
          • 14 Exhaust Systems
          • 15 Fuel Systems – Gasoline and Diesel
          • TYPES G/LP, G/CN, GS/LPS, AND GS/CNS
          • 16 General
          • 17 Fuel System
            • 17.1 General
            • 17.2 Gasoline and LP-gas components
            • 17.3 LP and CN-gas fuel system
            • 17.4 Fuel changeover – gasoline carburetor and LP or CN air valve
            • 17.5 Fuel changeover – gasoline fuel injection and LP or CN air valve
            • 17.6 Fuel changeover – gasoline fuel injection and electronically controlled LP or CN air valve
            • 17.7 Fuel changeover – gasoline and LP fuel injection
          • TYPE DY
          • 18 Electrical Systems
          • 19 Exhaust Systems
          • 20 Fuel Systems
          • 21 Temperature Limitations
          • 22 Temperature Cutoffs
        • PERFORMANCE – ALL TYPES
          • 23 Temperature Tests
            • 23.1 General
            • 23.2 Fork and platform trucks
            • 23.3 Load-carrying trucks
          • 24 Fuel-Consumption Test
          • 25 Exhaust System Test – Type G, GS, DS, LP, CN, LPS, CNS, G/LP, G/CN, GS/LPS, and GS/CNS
            • 25.1 General
            • 25.2 Types G, LP, and G/LP
            • 25.3 Types GS, DS, LPS, GS/LPS and DY
          • 26 LP-Gas Container Bracket Load Test – Types LP, LPS, G/LP, and GS/LPS
        • AUTOMOTIVE-TYPE COMPONENTS
          • CONSTRUCTION
          • 27 Electrically Operated Fuel Pumps
          • 28 Fill and Vent Fittings – Self-Closing Type – Types GS, DS, GS/LPS, and GS/CNS
          • 29 Manual-Disconnect Switches
          • 30 Changeover Switch – Dual Fuel
          • PERFORMANCE
          • 31 Vibration Tests
            • 31.1 Electric fuel pumps
            • 31.2 Mechanical-disconnect switches
            • 31.3 Fuel filters
            • 31.4 Test method
            • 31.5 Metallic tube fitting vibration test
          • 32 Endurance Tests
            • 32.1 Electric fuel pumps
            • 32.2 Mechanical disconnect switches
            • 32.3 Fill and vent fittings
          • 33 Dielectric Voltage-Withstand Test
          • 34 10-Day Moist Ammonia-Air Stress Cracking Test
          • 35 Explosion Tests
          • 36 Hydrostatic-Strength Test
          • 37 Tube-Fitting Pull Test
          • 38 Marking-Plate-Adhesion Tests
            • 38.1 General
            • 38.2 Oven aging test
            • 38.3 Immersion test
            • 38.4 Standard atmosphere test
          • 39 Backfire Deflector Element Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 40 General
          • 41 Industrial Trucks, Types LP, CN, LPS, CNS, G/LP, G/CN, GS/LPS and GS/CNS
          • 42 Industrial Trucks, Type DY
        • MARKING
          • 43 Details
        • ELECTRICAL ACCESSORIES FOR FIELD INSTALLATION BY QUALIFIED PERSONNEL
          • 44 Construction
          • 45 Marking
    • TEST FLUIDS
    • APPENDIX A