BS 7327-1:1990

Committees responsible
Foreword
Specification
Section 1. General
1.1 Scope
1.2 Definitions
Section 2. Contents, filling and overall mass of
extinguishers
2.1 Filling deviation
2.2 Halons acceptable for use
2.3 Propellant
2.4 Filling density
2.5 Cleanliness and contents
2.6 Maximum overall mass
2.7 Configuration
Section 3. Construction. All extinguishers
3.1 Venting
3.2 Mounting
3.3 Pipework and fittings
3.4 Corrosion resistance
3.5 Pressure indicating device
Section 4. Construction. Low pressure extinguishers
4.1 Resistance to internal pressure
4.2 Minimum burst pressure
Section 5. Construction. High pressure extinguishers
5.1 Body
5.2 Pressure relief device
5.3 Operating head materials
5.4 Resistance of fittings to internal pressure
5.5 Minimum burst pressure of fittings
Section 6. Additional requirements for non-rechargeable
extinguishers with permanently attached swaged closures
6.1 Maximum capacity
6.2 Closures
6.3 Dimensions
Section 7. Performance
7.1 Leakage
7.2 Duration of discharge
7.3 Fire extinguishing performance
Section 8. Installation instructions and marking of
extinguishers
8.1 General
8.2 Marking of high pressure extinguisher bodies
8.3 Installation and servicing instructions and
      information
Section 9. Production and type testing
9.1 General
9.2 Low pressure extinguishers
9.3 Fittings for high pressure extinguishers
9.4 Non-rechargeable extinguishers with permanently
      attached swaged closures
9.5 Retention of charge
Appendices
A. Test for security of mounting
B. Test for corrosion resistance of extinguishers and
     fittings
C. Pressure tests
D. Test for duration of discharge
Tables
1. Mechanical properties of copper alloys
2. Batch sampling plan following failure below design
     burst pressure