GB16669-2010
General technical specifications for components of carbon dioxide fire extinguishing systems
二氧化碳灭火系统及部件通用技术条件
GB 16669-2010 is a current mandatory Chinese national standard for General technical specifications for components of carbon dioxide fire extinguishing systems. It appears in the Environment compliance cluster with a product safety focus and has an implementation date of Mar 1, 2011.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard specifies the general technical specifications for high-pressure carbon dioxide fire extinguishing systems and their components. It applies to the design, manufacturing, and testing of system parts such as agent cylinders, nozzles, valves, and control panels. It is mandatory for all manufacturers producing CO2 fire suppression systems for the Chinese market. The standard references GB 4396 for CO2 extinguishing agents and GB 5099 for seamless steel gas cylinders.
Technical requirements
The standard defines the basic parameters for CO2 fire extinguishing systems, including working temperature ranges, storage pressures, and maximum filling densities. Systems must feature automatic, manual, and mechanical emergency startup modes with adjustable delay times. It mandates that all components be securely fixed and clearly marked with permanent identification, including system name, model, and extinguishing agent quantity. For individual components, the standard specifies rigorous requirements for agent cylinders, container valves, select valves, and nozzles. This includes material selection (such as austenitic stainless steel or copper alloys), hydraulic strength, sealing performance, and resistance to salt spray, sulfur dioxide, and stress corrosion. Components must withstand specific overpressure and vibration tests without leakage or structural damage. Nozzles are categorized by equivalent orifice sizes and must meet strict flow characteristics and discharge distribution criteria. The standard also sets comprehensive criteria for safety relief devices, control panels, and leak detection devices. Control panels must provide reliable alarm and control functions, featuring both primary and backup power supplies to ensure system startup. Leak detection devices, including weighing and pressure display units, must trigger reliable alarms when agent loss reaches specified thresholds. Signal feedback devices are required to have self-locking mechanisms and specific contact resistance limits.
Testing methods
The standard outlines a comprehensive suite of testing methods to verify compliance. Key tests include hydraulic strength tests, gas tightness tests, and overpressure tests to ensure structural integrity. Environmental and durability assessments involve salt spray corrosion tests, sulfur dioxide corrosion tests, stress corrosion tests, and temperature cycling leak tests. Operational reliability is verified through working reliability tests and vibration tests. Additionally, specialized tests such as the nozzle flow characteristics test, full flooding nozzle discharge characteristics test, and manual operation tests are specified to evaluate performance under realistic fire suppression scenarios.
FAQs
What products are regulated under GB 16669-2010?
GB 16669-2010 regulates high-pressure carbon dioxide fire extinguishing systems and their associated components, including cylinders, valves, nozzles, and control panels.
Are there any updates from the previous version of GB 16669?
Yes, this version replaces GB 16669-1996. It adds requirements for instruction manual preparation, introduces system model numbering methods, and updates the requirements and testing methods chapters.
Does the standard specify requirements for leak detection?
Yes, the standard includes detailed requirements for leak detection devices, such as weighing devices, pressure displays, and liquid level measuring devices, which must trigger alarms at specific agent loss thresholds.
The summary above provides a high-level overview of GB 16669-2010. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 16669-2010 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C84
- ICS
- 13.220.10
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China