UL 1821
Standard for Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2015-08-25DOD Approved: --
Price Code:BANSI Approved: 2017-05-05
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover thermoplastic pipe and fittings for use in wet pipe sprinkler systems for fire protection service.

    1.2 Thermoplastic pipe and fittings covered by these requirements are intended for use in sprinkler systems in any of the following types of occupancies:

    a)    Light hazard occupancies as defined in the Standard for Installation of Sprinkler Systems, NFPA 13;

    b)    Residential occupancies as defined in the Standard for Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, NFPA 13D; and

    c)    Residential occupancies as defined in the Standard for Installation of Sprinkler Systems in Low-Rise Residential Occupancies, NFPA 13R.

    1.3 The pipe and fittings covered by these requirements are intended to be installed in accordance with the Standard for Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, NFPA 13D; the Standard for Sprinkler Systems in Low-Rise Residential Occupancies, NFPA 13R; or the Standard for Installation of Sprinkler Systems, NFPA 13.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Reference Publications
          • 6 Terminology
          • 7 Glossary
          • 8 Use in Environmental Air Handling Spaces
        • CONSTRUCTION
          • 9 General
          • 10 Rated Pressure
          • 11 Rated Temperature
        • PERFORMANCE
          • 12 General
          • 13 Fire Exposure Test
            • 13.1 General
            • 13.2 Fire test with low flowing pressure
            • 13.3 Fire test with maximum rated flowing pressure
            • 13.4 Fire exposure test - unfinished basement application
            • 13.5 Fire exposure test- vertical piping application
          • 14 Pipe Coefficient of Friction Test
          • 15 Fitting Equivalent Length Test
          • 16 Crush Resistance Test
          • 17 Stress-Corrosion Cracking of Stainless Steel Parts Test
          • 18 Flexural Test
          • 19 Impact Resistance Test
          • 20 Vibration Test
          • 21 High Pressure Sprinkler Operation Test
          • 22 Kinking Test
          • 23 Assembly Test
          • 24 Leakage and Hydrostatic Pressure Test
          • 25 Pressure Cycling Test
          • 26 Temperature Cycling Test
          • 27 10-Day Moist Ammonia Air Stress Cracking Test
          • 28 Long-Term Hydrostatic Pressure Test
          • 29 Environmental Exposure Tests
            • 29.1 General
            • 29.2 Test method
            • 29.3 Water immersion exposure
            • 29.4 Air oven aging exposure
            • 29.5 Light and water exposure
          • 30 Marking Permanency Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 31 General
          • 32 Wall Thickness Monitoring
        • MARKINGS
          • 33 General
          • 34 Pipe
          • 35 Fittings
        • INSTRUCTIONS
          • 36 Installation and Design Manual
    • APPENDIX A