GB 16669-2026General technical specifications for carbon dioxide fire extinguishing systems and components (English PDF)

National Standard of the People's Republic of China

ICS

13.220.10

Classification

C83

Issued by: State Administration for Market Regulation; Standardization Administration of China

Contents

• Preface
• 1.Scope
• 2 Normative References
• 3.Terms and Definitions
• 4.Model Numbering Method
• 4.1 Fire extinguishing system model
• 4.2 Component Model
• 5 Requirements
• 5.1 General Requirements
• 5.2 Fire Extinguishing System
• 5.3 Bottle Group
• 5.4 Nozzle
• 5.5 Selector Valve
• 5.6 Check Valve
• 5.7 Manifold
• 5.8 Connecting pipe
• 5.9 Drive Unit
• 5.10 Control Device
• 5.11 Signal feedback device
• 5.12 Low-leakage high-sealing valve
• 5.13 Pipe fittings
• 5.14 Support brackets
• 5.15 Flow design calculation and verification
• 6.Test Methods
• 6.1 Test Requirements
• 6.3 Hydraulic strength test
• 6.4 Air tightness test
• 6.5 Salt spray corrosion test
• 6.6 Stress Corrosion Test
• 6.7 Sulfur Dioxide Corrosion Test
• 6.8 Withstand Voltage Test
• 6.9 Insulation Resistance Test
• 6.10 Fire Extinguishing System Test
• 6.11 Monitoring Information Type Check
• 6.12 State Sensing Unit Experiment
• 6.13 Data Transmission Unit Test
• 6.14 DTU Data Application Platform Experiment
• 6.15 Bottle Pack Filling Density Test
• 6.16 Vibration Test
• 6.17 Temperature Cyclic Leakage Test
• 6.18 Bottle group tipping impact test
• 6.19 Impact resistance test of accidental discharge protection device
• 6.20 Extinguishing agent cylinder release time
• 6.21 Overpressure Test
• 6.22 Operational reliability test
• 6.23 Operational test under maximum and minimum working pressure
• 6.24 Local resistance loss test
• 6.25 Manual Operation Test
• 6.26 Contact resistance test
• 6.27 Weighing device alarm function test
• 6.28 High and Low Temperature Test
• 6.29 Overload test of weighing device
• 6.30 Protection level
• 6.31 Basic Error Check of Pressure Indicator Reading
• 6.32 Alternating load test of pressure indicator
• 6.33 Pressure indicator alarm function test
• 6.34 Power Supply Test for Digital Pressure Display
• 6.35 Safety relief device operation test
• 6.36 Nozzle Protective Cap Test
• 6.37 Nozzle Flow Characteristic Test
• 6.38 Nozzle heat and pressure resistance test
• 6.39 Nozzle heat resistance and cold shock resistance test
• 6.40 Nozzle impact resistance test
• 6.41 Test of jet characteristics of fully submerged nozzle
• 6.42 Test of jet characteristics of overhead nozzle
• 6.43 Test on the jet characteristics of groove-edge type nozzle
• 6.44 One-way valve opening pressure test
• 6.45 Manifold Flow Test
• 6.46 Hot air aging test of non-metallic connecting pipes
• 6.47 Low-temperature test of non-metallic connecting pipes
• 6.48 Drive device signal feedback function test
• 6.49 Control Device Test
• 6.50 Signal feedback device operation test
• 6.51 Low-leakage high-sealing valve closing pressure test
• 6.52 Coating Test
• 6.53 Bearing capacity test
• 6.54 Cyclic Loading Test
• 6.55 Fatigue test
• 7.Inspection Rule
• 7.1 Inspection Classification, Inspection Items and Test Procedures
• 7.2 Sampling Method and Sample Size
• 7.3 Judgment of Test Results
• 8.Instruction Manual
• 9.Extinguishing agent filling
• 10 Packaging, transportation and storage
• 10.1 Packaging
• 10.2 Transportation