[2025 Standards] GB 16808-2025 \"Flammable Gas Alarm Controllers\" has been released

GB 16808 was first issued and implemented in 1997, and this release represents the third revision. Compared to the previous 2008 version, the GB16808-2025 standard for \"Combustible Gas Alarm Controllers\" modifies the functions related to combustible gas alarm control, and adds requirements such as information display and query functions, the ability to communicate with graphic display devices in fire control rooms, and system compatibility features.

Previously, in Announcement No. 9 of 2024 issued by the State Administration for Market Regulation, it was stipulated that as of July 1, 2025, the \"Announcement by the State Administration for Market Regulation on Implementing Mandatory Product Certification for Commercial Gas Burning Appliances and Other Products\" would come into effect. This announcement brings combustible gas detection and alarm products under the scope of mandatory product certification (CCC certification). As the core component of a combustible gas detection and alarm system, the combustible gas alarm controller is subject to CCC certification.

Excerpts from GB/T 50493-2019: GB/T 50493-2019 \"Design Code for Detection and Alarm of Flammable and Toxic Gases in Petrochemical Industries\" 2.0.7 Alarm control unit: An electronic device that receives the output signals from detectors, displays and records the concentration of the gases being monitored, issues audible and visual alarm signals, and is capable of sending alerts regarding the gas concentration as well as information on faults of the alarm control unit to devices such as graphic display units in fire control rooms. When the combustible gas alarm signal is used in fire protection interconnection, the alarm control unit typically employs a dedicated combustible gas alarm controller that is manufactured in accordance with the specific product standards for such controllers and comes with a certification report. Explanation of the provisions: 2.0.7 The alarm control unit can be an electronic device based on a microprocessor, or it can be a dedicated combustible gas alarm controller. A dedicated combustible gas alarm controller refers to a product that meets the quality requirements of the current standard \"Combustible Gas Alarm Controllers\" GB 16808-2008 and is equipped with a type inspection report for fire protection products.

5.4 Selection of the alarm control unit 5.4.1 The alarm control unit shall be a separately installed microprocessor-based electronic device, and it must possess the following basic functions: 1 It must be capable of supplying power to combustible gas detectors, toxic gas detectors, and their accessories. 2 It can receive the output signal from gas detectors, display the gas concentration, and issue audible and visual alarms. 3 It can manually suppress sound and light alarm signals, but will still issue alarms when new alarm signals are detected. 4 It features relatively independent alarm functions that do not affect each other, enabling the differentiation and identification of the location codes of the alarmed areas. 5 Under the following conditions, the alarm control unit shall be able to emit audible and visual fault alarm signals that are clearly distinct from the alarm signals for combustible gas and toxic gas concentrations: 1) There is an open circuit or short circuit in the connection between the alarm control unit and the detectors. 2) Low voltage in the main power supply of the alarm control unit. 3) The connection between the alarm control unit and the power supply is open or short-circuited. 6 has the following recording, storage, and display functions: 1) It can record the alarm times for flammable gases and toxic gases, with a daily timing error not exceeding 30 seconds; 2) It can display the total number of currently alarmed locations; 3) It can identify the location that triggered the alarm first, with subsequent alarm points being displayed in order of their alarm times; 4) It has a function for recording historical events. Explanation of the provisions: 5.4 Selection of the alarm control unit – 5.4.1 In the engineering design of combustible gas and toxic gas detection and alarm systems, the design scheme for the gas alarm control unit must be determined by taking into account factors such as the scale of the installation, the owner’s safety management requirements, the number of detection points in the production facility, and the technical specifications of the detection and alarm system. The combustible gas and toxic gas detection and alarm systems should not be designed in conjunction with the production process control system, in order to ensure that these detection and alarm systems can continue to function properly even if there are failures or interruptions in the production process control system. The basic functions of the alarm control unit are related to the system’s design configuration. The relevant performance indicators of the alarm control unit are established in accordance with the current **standard \"Gas Alarm Controllers\" GB 16808-2008**, taking into account the development trends of gas detection and alarm instruments both domestically and internationally.

5.4.3 When combustible gas detectors are used in fire protection interconnection, the detector signals shall first be sent to a dedicated combustible gas alarm controller that has been manufactured in accordance with the relevant product standards and for which a test report is available; the alarm signals shall then be transmitted by this dedicated combustible gas alarm controller to the fire alarm controller in the fire control room. The combustible gas alarm signals and fire alarm signals should be clearly distinguished in a fire alarm control system. Explanation of the provisions: 5.4.3 This clause is formulated in accordance with Articles 8.1.2 and 8.1.6 of the current **standard \"Code for Design of Automatic Fire Alarm Systems\" GB 50116-2013. Combustible gas detectors cannot be connected directly to the detection circuits of the fire alarm control system; the combustible gas alarm signals must be generated by the alarm control unit or transmitted to the fire alarm control system. Article 8.1.2 of the current **standard, the ‘Design Code for Automatic Fire Alarm Systems’ GB 50116-2013, states that the combustible gas detection and alarm system should be designed as an independent system; combustible gas detectors shall not be connected to the detection circuits of the fire alarm control system. When it is necessary to integrate the alarm signals from combustible gas detectors into the automatic fire alarm system, these signals shall be connected through a combustible gas alarm controller. Paragraph 8.1.6 of the current **standard, the ‘Design Code for Automatic Fire Alarm Systems’ GB 50116-2013, states that: ‘Where interlocking and alarm functions are required within the protection area of a combustible gas detection and alarm system, such functions shall be implemented through interlocking by the combustible gas alarm controller or the fire control interlocking controller.’

To strengthen the quality management of fire protection products, **strict controls have been implemented on such products. When the combustible gas detection signal is used in fire linkage control, the detection signal must be sent to the fire controller via a dedicated combustible gas alarm controller. A dedicated combustible gas alarm controller refers to a combustible gas alarm controller that meets the quality requirements of the current standard \"Combustible Gas Alarm Controllers\" GB16808-2008, and has obtained a type inspection report for fire protection products.

Announcement on the Implementation of Mandatory Product Certification Measures To further strengthen the supervision of product quality and safety, in accordance with the relevant provisions of the Regulations of the People’s Republic of China on Certification and Accreditation, the State Administration for Market Regulation has decided to implement mandatory product certification (hereinafter referred to as CCC certification) for products such as commercial gas burners, and to restore the third-party evaluation system for CCC certification for low-voltage components. The relevant requirements are hereby announced as follows: 1. CCC certification shall be applied to commercial gas burning appliances, flame-retardant wires and cables, electronic toilets, helmets for electric bicycle riders, combustible gas detection and alarm products, water-based interior wall coatings, as well as explosion-proof lighting fixtures and control devices (for product descriptions and definitions, please refer to the attachment). (1) As of May 1, 2025, electric bicycle passenger helmets, explosion-proof lighting fixtures, and control devices listed in the CCC certification catalog must undergo CCC certification and bear the CCC certification mark before they can be manufactured, sold, imported, or used in other business activities. Starting from May 1, 2024, the designated certification bodies will begin accepting requests for CCC certification; the related certification and testing tasks will be carried out by those certification bodies and laboratories that already have the authorized capabilities for motorcycle rider helmets and explosion-proof electrical equipment.

(II) Starting from July 1, 2025, commercial gas burners, flame-retardant wires and cables, electronic toilets, combustible gas detection and alarm devices, and water-based interior wall coatings that are included in the CCC certification list must undergo CCC certification and bear the CCC certification mark before they can be manufactured, sold, imported, or used in other business activities. Starting from July 1, 2024, the designated certification bodies will begin accepting requests for CCC certification; the certification tasks involved will be carried out by those certification bodies that already have the authority to handle certifications for the relevant product categories, while the laboratories will be designated separately.

II. Third-party evaluation method for restoring CCC certification for low-voltage components. (1) As of November 1, 2024, low-voltage components must obtain a CCC certification certificate and be marked with the CCC certification mark before they can be manufactured, sold, imported, or used in other business activities. Starting from May 1, 2024, the designated certification bodies will begin accepting requests for CCC certification for low-voltage components, and the \"Mandatory Certification Product Conformity Self-Declaration Information Submission System\" (hereinafter referred to as the system) will no longer generate self-declarations. For those holding a valid CCC self-declaration for low-voltage components, the designated certification body issues a new CCC certification certificate directly, ensuring the validity of the certification through post-certification supervision. By November 1, 2024, enterprises holding valid CCC self-declarations shall complete the conversion of their CCC certification certificates and promptly cancel the corresponding self-declarations ； For those that have already left the factory and are no longer in production, conversion is not required. After November 1, 2024, the CCC self-declarations for low- and medium-voltage components in the system will be uniformly revoked.