AS 1843-1976

1 - AS 1843 to 1845-1976 PORTABLE FIRE EXTINGUISHERS - FOAM TYPE
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND DEFINITIONS
6 - 1.1 SCOPE.
6 - 1.2 DEFINITIONS.
6 - 1.2.1 Portable fire extinguisher
6 - 1.2.2 Foam (chemical) type portable fire extinguisher
6 - 1.2.3 Reversible (turnover) type extinguisher
6 - 1.2.4 Splash-proof type extinguisher
7 - SECTION 2. DESIGN AND CONSTRUCTION
7 - 2.1 SIZE.
7 - 2.2 METHODS OF OPERATION.
7 - 2.3 CHARGE.
7 - 2.4 BASIS FOR DESIGN.
7 - 2.4.1 Design Pressure.
7 - 2.4.2 Standard Test Pressure.
7 - 2.4.3 Wall Thickness.
7 - 2.5 MATERIALS AND CONSTRUCTION.
7 - 2.5.1 Body.
8 - 2.5.2 Fittings.
8 - 2.6 CIRCUMFERENTIAL AND LONGITUDINAL JOINTS.
8 - 2.6.1 Methods.
8 - 2.6.2 Riveted Construction.
8 - 2.6.3 Welded Construction.
8 - 2.6.4 Swaged Construction.
8 - 2.7 PROTECTIVE FINISHES.
8 - 2.7.1 Internal Surfaces.
9 - 2.7.2 Internal Components.
9 - 2.7.3 External Surfaces.
9 - 2.8 NECK RING AND CAP.
9 - 2.8.1 Neck Ring.
9 - 2.8.2 Cap.
10 - 2.8.3 Thread.
10 - 2.9 CAP WASHER.*
10 - 2.10 HANDLES AND SUPPORTING FITTINGS.
10 - 2.11 SUPPORT FIXTURE.
10 - 2.12 LIQUID LEVEL INDICATOR.
11 - 2.13 INNER CONTAINER AND SUPPORT.
11 - 2.13.1 General.
11 - 2.13.2 Reversible-type Extinguisher.
11 - 2.13.3 Splash-proof Type Extinguisher.
11 - 2.14 DISCHARGE FITTINGS.
11 - 2.14.1 Strainer.
11 - 2.14.2 Freedom of Discharge.
11 - 2.14.3 Discharge Nozzle.
11 - 2.14.4 Discharge Hose and Fittings.
11 - 2.15 PERFORMANCE REQUIREMENTS.
11 - 2.15.1 Discharge Time.
11 - 2.15.2 Fire Test.
12 - SECTION 3. TESTING
12 - 3.1 PRESSURE TESTS.
12 - 3.1.1 Standard Test.
12 - 3.1.2 Test to Destruction.
12 - 3.1.3 Fittings.
12 - 3.2 TEST FOR CONTINUITY OF ORGANIC LINING.
13 - SECTION 4. MARKING AND IDENTIFICATION
13 - 4.1 MARKING OF EXTINGUISHERS.
13 - 4.1.1 Required Marking.
13 - 4.1.2 Method of Marking.
13 - 4.2 COLOUR IDENTIFICATION.
14 - 4.3 PACKING FOR SHIPMENT.
17 - APPENDIX A - MATERIALS SUITABLE FOR WELDING OR BRAZING
17 - A1 CARBON STEEL.
17 - A2 AUSTENITIC STAINLESS STEEL.
17 - A3 NON-FERROUS METALS.
19 - APPENDIX B - WELDING OR BRAZING OF EXTINGUISHERS- PERMISSIBLE METHODS
20 - APPENDIX C - ADDITIONAL REQUIREMENTS FOR RESISTANCE (SEAM OR SPOT) WELDING
20 - C1 TYPES OF JOINT.
20 - C2 SURFACE CONDITIONS.
21 - APPENDIX D - FUSION WELDING
21 - D1 TYPES OF JOINT.
21 - D2 SURFACE CONDITIONS.
22 - D3 WELDING MATERIALS AND REQUIREMENTS.
23 - APPENDIX E - INTER-GRANULAR CORROSION TEST FOR AUSTENITIC STAINLESS STEEL
23 - E1 PREPARATION OF TEST PIECES.
23 - E1.1 For Steel not to be Welded.
23 - E1.2 For Steel to be Welded.
23 - E2 METHOD OF TEST.
24 - APPENDIX F - TYPE APPROVAL TEST
24 - F1 INTERNAL CORROSION TEST.
24 - F2 ORGANIC LININGS IMPACT TEST.

Applies to metal-bodied portable fire extinguishers of the foam type, in which the foam is expelled by pressure generated as a result of chemical reaction between solutions in the extinguisher.

This specification applies to metal-bodied portable fire extinguishers of the foam type, in which the foam is expelled by pressure generated as a result of chemical reaction between solutions in the extinguisher. It refers to materials, method of manufacture and performance of the extinguisher.NOTE: The requirements for turnover type extinguishers are retained in this specification solely to facilitate parts replacement as it is intended that these types should be phased out of manufacture not later than 1 January 1980.

Obsolescent May 1982