1 Scope
This standard specifies the terms and definitions, classification, model designation, requirements, test methods, inspection rules, signs, labels and instructions for use of low pressure carbon dioxide extinguishing system and components.
This standard is applicable to carbon dioxide extinguishing systems in which carbon dioxide extinguishing agents are stored at low pressure.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendments) applies.
GB 150 (All parts) Pressure vessels
GB 4396 Fire extinguishing agent - Carbon dioxide
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB 16669—2010 General technical specifications for components of carbon dioxide fire extinguishing systems
GB 25972—2010 Gas fire extinguishing systems and components
GA 61—2010 General technical specifications of actuating and control devices of fixed extinguishing systems
TSG R0004 Supervision regulation on safety technology for stationary pressure vessel
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
low pressure carbon dioxide extinguishing system
extinguishing system in which carbon dioxide extinguishing agent is stored at -20~-18℃
3.2
extinguishing agent storage device
device for storing extinguishing agent, which is composed of extinguishing agent storage vessel, maintenance valve, filling valve, balance valve, over pressure relief device, pressure control display device, extinguishing agent quantity display device, refrigerating system, etc.
3.3
master control valve
valve on the extinguishing agent storage vessel for sealing extinguishing agent, controlling the release of extinguishing agent, which may be automatically opened and closed
3.4
filling valve
valve connected with the extinguishing agent storage vessel and used for filling carbon dioxide extinguishing agent
3.5
maintenance valve
valve which is able to cut off the communication between the maintained components and the extinguishing agent storage vessel
balance valve
valve connected with the extinguishing agent storage vessel and used for balancing gas and liquid phase when the carbon dioxide extinguishing agent is filled
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Model designation
6 Requirements
6.1 System
6.2 Storage device
6.3 Actuating device
6.4 Master control valve
6.5 Selector valve
6.6 Check valve
6.7 Nozzle
6.8 Signal feedback device
6.9 Controller
6.10 Shunt
7 Test methods
7.1 System inspection
7.2 Hydraulic strength test
7.3 Airtightness test
7.4 Over pressure test of master control valve, filling valve, balance valve and maintenance valve
7.5 Action pressure test
7.6 Check valve performance test
7.7 Salt spray corrosion test
7.8 Operating reliability test
7.9 Action reliability test at extreme temperature
7.10 Determination of equivalent length of valve
7.11 Operation performance test of master control valve and selector valve
7.12 Inspection of opening and closing time, valve position indication and switch direction of master control valve
7.13 Check valve performance test
7.14 Nozzle performance test
7.15 Voltage resistance test
7.16 Measurement of insulation resistance
7.17 Determination of contact resistance of contacts
7.18 High and low temperature test of pressure gauge
7.19 Inspection of deflection smoothness of DPG pressure gauge pointer
7.20 Overload test of DPG gauge
7.21 Refrigerating system test
7.22 High temperature operation and refrigerating capacity test
7.23 Inspection of outer protection of thermal insulation layer
7.24 Inspection of high and low pressure alarm devices
7.25 Thermal insulation effect test
7.26 Controller Test
8 Inspection rules
8.1 Inspection classification
8.2 Test procedures
8.3 Sampling method
8.4 Judgment rules
9 Signs, labels and instructions for use
9.1 Signs and labels
9.2 Instructions for use
Annex A (Normative) Test procedures and sampling quantity of system
Annex B (Normative) Test procedures and sampling quantity of extinguishing agent storage vessel
Annex C (Normative) Test procedures and sampling quantity of filling valve, balance valve and maintenance valve
Annex D (Normative) Test procedures and sampling quantity of safety valve
Annex E (Normative) Test procedures and sampling quantity of safety relief diaphragm
Annex F (Normative) Test procedures and sampling quantity of pressure switch
Annex G (Normative) Test procedures and sampling quantity of pressure gauge
Annex H (Normative) Test procedures and sample quantity of pressure sensor
Annex I (Normative) Test procedures and sample quantity of liquid level meter
Annex J (Normative) Test procedures and sample quantity of weighing device
Annex K (Normative) Test procedures and sample quantity of refrigerating system
Annex L (Normative) Insulation test procedures and sample quantity of storage device
Annex M (Normative) Setting test procedures and sample quantity of alarm device
Annex N (Normative) Test procedures and sample quantity of master control valve
Annex P (Normative) Test procedures and sample quantity of selector valve
Annex Q (Normative) Test procedures and sample quantity of check valve
Annex R (Normative) Test procedures and sample quantity of nozzle
Annex S (Normative) Test procedures and sample quantity of signal feedback device
Annex T (Normative) Test procedures and sample quantity of controller
Annex U (Normative) Test procedures and sample quantity of shunt tube
