UL 142
Standard for Steel Aboveground Tanks for Flammable and Combustible Liquids

DETAILS
Edition Number:9SCC Approved:--
Edition Date:2006-12-28DOD Approved: 1989-08-11
Price Code:BANSI Approved: 2013-07-18
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover steel primary, secondary and diked type atmospheric storage tanks intended for noncorrosive, stable flammable and combustible liquids that have a specific gravity not exceeding 1.0 in aboveground applications.


    1.1 revised December 15, 2007

    1.1.1 Each tank type may be fabricated in a combination of various shapes (cylindrical, rectangular or obround) and orientations (horizontal, vertical) with or without multiple compartments, as covered in this Standard.


    1.1.1 added December 15, 2007

    1.2 These tanks are intended for installation and use in accordance with the Flammable and Combustible Liquids Code, NFPA 30; the Standard for Installation of Oil-Burning Equipment, NFPA 31; the Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A; the Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines, NFPA 37; the Uniform Fire Code, NFPA 1; and the International Fire Code published by the International Code Council.


    1.2 revised December 15, 2007

    1.3 The tanks covered by these requirements are fabricated, inspected and tested for leakage before shipment from the factory as completely assembled vessels.


    1.3 revised December 15, 2007

    1.4 These requirements do not apply to tanks covered by the Specification for Field-Welded Tanks for Storage of Production Liquids, API 12D; and the Specification for Shop-Welded Tanks for Storage of Production Liquids, API 12F.


    1.4 revised December 15, 2007

    1.5 Deleted December 15, 2007

    1.6 These requirements do not cover special evaluations for resistance to hurricanes, tornadoes, earthquakes, floods, or other natural disasters; or resistance to vehicle impact.


    1.6 revised December 15, 2007

    1.7 These requirements do not cover portable tanks intended for transporting flammable or combustible liquids (such as shipping containers), or mobile use applications (such as mounted on a trailer). These types of products are covered by separate UN, DOT, or equipment product standards.


    1.7 revised December 15, 2007

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • Part
          • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Units of Measurement
            • 2.2 Undated references
          • 3 Glossary
          • CONSTRUCTION – ALL TANKS
          • 4 Capacities and Dimensions
          • 5 Materials
          • 6 Joints
          • 7 Tank Connections
          • 8 Venting
          • 9 Manholes
          • 10 Fill, Drain, and Gauge Openings
          • 11 Painting
        • PART I – PRIMARY CONTAINMENT TANKS
          • Section
            • HORIZONTAL CYLINDRICAL CONSTRUCTIONS
          • 12 General
          • 13 Construction
            • 13.1 Capacities and dimensions
            • 13.2 Steel thickness
            • 13.3 Heads and head joints
            • 13.4 Compartment tank construction
            • VERTICAL CYLINDRICAL CONSTRUCTIONS
          • 14 General
          • 15 Construction
            • 15.1 Capacities and dimensions
            • 15.2 Steel thickness
            • 15.3 Tank top (roof)
            • 15.4 Tank bottom (floor)
            • RECTANGULAR CONSTRUCTIONS
          • 16 General
          • 17 Construction
            • 17.1 General
            • 17.2 Steel thickness
          • 18 Performance
            • 18.1 Hydrostatic strength test
            • 18.2 Top load test
        • PART II – SECONDARY CONTAINMENT TANKS
          • Section
            • ALL SECONDARY CONTAINMENT TANK CONSTRUCTIONS
          • 19 General
            • HORIZONTAL CYLINDRICAL CONSTRUCTIONS
          • 20 General
          • 21 Construction
            • VERTICAL CYLINDRICAL CONSTRUCTIONS
          • 22 General
          • 23 Construction
            • 23.1 General
            • 23.2 Tank bottom (floor)
            • RECTANGULAR CONSTRUCTIONS
          • 24 General
          • 25 Construction
          • 26 Performance Test
            • 26.1 Hydrostatic strength test
            • 26.2 Top load test
        • PART III – DIKED TANKS
          • 27 General
            • 27.1 Details
            • 27.2 Dike capacity
          • 28 Construction
            • 28.1 All diked tanks
            • 28.2 Open top dike constructions
            • 28.3 Closed top dike constructions
          • 29 Performance Tests
            • 29.1 General
            • 29.2 Buoyancy test
            • 29.3 Hydrostatic load test
        • PART IV – TANK SUPPORTS
          • 30 General
            • 30.1 All constructions
            • 30.2 Horizontal cylindrical tank constructions
            • 30.3 Vertical cylindrical tank constructions
            • 30.4 Rectangular tank constructions
          • 31 Construction
            • 31.1 General
            • 31.2 Saddles
          • 32 Performance Tests
        • PART V – TANK ACCESSORIES, COMPONENTS, AND SPECIAL CONSTRUCTIONS
          • 33 General
            • 33.1 All types
            • 33.2 Materials
          • 34 Ladders
          • 35 Stairs
          • 36 Runways
          • 37 Heating Coils and Hot Wells
          • 38 Sumps
          • 38A Minor Tank Accessories
        • Part
          • PERFORMANCE TEST METHODS
          • 39 Tank Leakage Test
            • 39.1 Caution
            • 39.2 Primary containment tanks
            • 39.3 Secondary containment tanks
          • 40 Hydrostatic Strength Test
            • 40.1 General
            • 40.2 Test apparatus
            • 40.3 Primary containment tanks
            • 40.4 Secondary containment tanks
          • 41 Top Load Test
          • 42 Buoyancy Test
          • 43 Hydrostatic Load Test
          • 44 Tank Support Load Test
          • 44A Lift Lug Test
          • MANUFACTURING AND PRODUCTION TESTS
          • 45 Primary and Secondary Containment Tanks
          • 46 Diked Tanks
          • MARKINGS
          • 47 General
          • 48 Marking Elements
            • 48.1 All tanks
            • 48.2 Compartment tanks
            • 48.3 Secondary containment tanks
            • 48.4 Diked tanks
            • 48.5 Rectangular tanks
          • 49 Marking Method and Location
    • APPENDIX ACapacity and Wetted Area Tables
    • Superseded List