UL 2775
Standard for Fixed Condensed Aerosol Extinguishing System Units

DETAILS
Edition Number:1SCC Approved:--
Edition Date:2014-04-03DOD Approved: --
Price Code:BANSI Approved: 2016-08-05
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover the construction and operation of fixed condensed aerosol extinguishing system units inclusive of aerosol generating extinguishing system units and aerosol generating automatic extinguisher units intended for total flooding applications when installed, inspected, tested, and maintained in accordance with the Standard for Fixed Aerosol Fire Extinguishing Systems, NFPA 2010.

    1.2 Aerosol generating automatic extinguisher units do not have a manual means of operation, and are not intended:

    a)    For use as a general substitute for aerosol generating extinguishing system units; or

    b)    For protection of fire risks larger than those specified in the installation instructions for a single unit by using multiple units.

  • 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 Glossary
        • CONSTRUCTION
          • 6 General
          • 7 Electrically Operated Alarms
          • 8 Controls and Indicators
          • 9 Pneumatic Control Assembly Pressure Vessels
          • 10 Pressure Relief Devices for Pneumatic Control Assemblies
          • 11 Gaskets and "O" Rings
          • 12 Pressure Gauges for Pneumatic Control Assemblies
          • 13 Puncturing Mechanisms
          • 14 Electrically Operated Devices
          • 15 Condensed Aerosol Extinguishing Agents
          • 16 Pneumatic Control Gases
          • 17 Polymeric Materials and Nonmetallic Parts
          • 18 Anti-Recoil Devices
          • 19 Pressure Switches
        • PERFORMANCE
          • 20 General
          • 21 Discharge Test
          • 22 Temperature Measurement Test
          • 23 Mounting Device Test
          • 24 Rough Usage Test
          • 25 Vibration Test
          • 26 Pyrotechnic Reaction Containment Test
          • 27 Fire Exposure Test
          • 28 High Humidity Test
          • 29 Moist Hydrogen Sulfide Air Mixture Corrosion Test
          • 30 Moist Carbon Dioxide-Sulfur Dioxide Air Mixture Corrosion Test
          • 31 Salt Spray Corrosion Test
          • 32 Thirty-Day Elevated Temperature Test
          • 33 Temperature Cycling Test
          • 34 One-Year Time Leakage Test
          • 35 Hydrostatic Pressure Test
            • 35.1 Pressure vessels
            • 35.2 Other pressure retaining devices
            • 35.3 Test method
          • 36 Pressure Relief Tests
          • 37 Flexible Hose Assembly Low Temperature Test
          • 38 Calibration Test – Gauges
          • 39 Burst Strength Test – Gauges
          • 40 Overpressure Test – Gauges
          • 41 Impulse Test – Gauges
          • 42 Pressure Relief Test – Gauges
          • 43 Water Resistance Test – Gauges
          • 44 Pneumatic Operation Test
          • 45 Pneumatic Time Delay Verification Test
          • 46 Pressure-Operated Alarm Test
          • 47 Operation Test of Manual Actuators and Manual Pull Stations
          • 48 500 Cycle Operation Test
            • 48.1 Electrical initiators
            • 48.2 Other devices
          • 49 Class A and B Fire Extinguishment Tests
            • 49.1 General test parameters
            • 49.2 Class A fire extinguishment tests
            • 49.3 Class B fire extinguishment tests
          • 50 Distribution Verification Extinguishment Tests with Extinguishing System Units
            • 50.1 General
            • 50.2 Test enclosure
            • 50.3 Maximum area coverage and minimum height test arrangement procedure
            • 50.4 Maximum height test arrangement procedure
          • 51 Distribution Verification Extinguishment Tests with Automatic Extinguisher Unit
            • 51.1 General
            • 51.2 Test enclosures
            • 51.3 Maximum area coverage, minimum height, and maximum volume test arrangement procedure
            • 51.4 Maximum height and maximum volume test arrangement procedure
          • 52 Automatic Extinguisher Unit Automatic Operation Extinguishment Tests
            • 52.1 General
            • 52.2 Test enclosures
            • 52.3 Test arrangement procedure
          • 53 Elastomeric Parts Test
          • 54 Stress Corrosion Cracking Test for Brass Parts
          • 55 Aging Test – Condensed Aerosol Generator
          • 56 Aging Tests – Plastic Materials
            • 56.1 Air-oven aging test
            • 56.2 Light and water test
          • 57 Nameplate Exposure Tests
          • 58 Nameplate Adhesion Test
          • 59 Nameplate Abrasion Test
          • 60 Locking Device And Tamper Indicator Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 61 General
            • 61.1 General
            • 61.2 Aerosol-forming compound
            • 61.3 Electrical initiators
            • 61.4 Hydrostatic pressure test – shells for pneumatic control assemblies
            • 61.5 Gauge calibration test for pneumatic control assemblies
            • 61.6 Leakage test for pneumatic control assemblies
        • MARKINGS
          • 62 General
        • INSTRUCTIONS
          • 63 General
          • 64 Owner's Manual
          • 65 Design, Installation, Operation, and Maintenance Instruction Manual