GB7956.23-2019
Fire fighting vehicles—Part 23: Compressed air supply fire fighting vehicle
消防车 第23部分：供气消防车
GB 7956.23-2019 is a current mandatory Chinese national standard for Fire fighting vehicles—Part 23: Compressed air supply fire fighting vehicle. It appears in the Auto compliance cluster with a product safety focus and has an implementation date of Jul 1, 2020.
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
GB 7956.23-2019 applies specifically to compressed air supply fire fighting vehicles designed to provide breathing air or pneumatic power sources. It covers the technical requirements, test methods, inspection rules, and packaging for these specialized vehicles. This standard is mandatory for manufacturers producing fire fighting vehicles equipped with high-pressure air compressors and storage cylinder groups intended for the Chinese market. It should be noted that general fire vehicle requirements are governed by the referenced standard GB 7956.1-2014.
Technical requirements
The standard mandates comprehensive specifications for the compressed air supply system, encompassing the air compressor, high-pressure storage cylinders, piping, and control mechanisms. It requires that compressors undergo a continuous 6-hour reliability test under rated conditions, ensuring no abnormal vibrations or overheating occurs. Manufacturers must ensure automated shutdown and alarm systems are triggered during critical faults such as low lubrication oil pressure or excessive discharge temperatures. For the high-pressure storage cylinder group, the standard dictates compliance with pressure vessel codes, requiring safety valves, pressure gauges, and low-pressure audio-visual alarms. The inflation protection box must feature a minimum steel plate thickness of 5mm, safety interlocking mechanisms that cut off the gas supply when opened, and automatic pressure relief capabilities to protect operators. Furthermore, an air purification device with an integrated air quality detector is mandatory to ensure breathable air standards are met. The standard also specifies critical operational parameters, such as the maximum noise level at the operator's position not exceeding 95dB(A), and specific time limits for both direct compressor inflation and storage cylinder transfer inflation. Additionally, it outlines the required on-board equipment, mandating items like spare breathing apparatus cylinders, O-rings, and protective gear.
Testing methods
Testing procedures include a 6-hour continuous reliability operation test for the compressor under rated flow and pressure, measuring engine parameters and compressed air temperatures. Piping systems undergo a hydrostatic pressure test at 1.5 times the rated working pressure. Functional tests for the control system involve simulating fault conditions (e.g., low oil pressure, high exhaust temperature) to verify automatic shutdown and alarm activations. Engineers must also conduct physical measurements of the inflation protection box steel thickness and verify the automatic gas supply cutoff functionality when the box door is opened. Noise levels are measured at the operator's position according to the methods specified in JB/T 10683-2006.
FAQs
What products are regulated under GB 7956.23-2019?
This standard regulates compressed air supply fire fighting vehicles, which are specialized fire trucks equipped with high-pressure air compressors, high-pressure air storage cylinder groups, and inflation protection boxes designed to fill breathing apparatus cylinders or provide a pneumatic power source.
Are there any specific updates or focus areas in GB 7956.23-2019 compared to general fire vehicle standards?
The standard introduces specific technical and safety requirements for the compressed air supply system, including detailed provisions for the inflation protection box, air purification devices, and automated control systems. It also defines specific inflation time limits and mandatory accompanying spare parts.
How does GB 7956.23-2019 relate to other fire fighting vehicle standards?
It builds upon the general requirements found in GB 7956.1-2014 but is highly specific to compressed air supply systems. It also references specific Chinese mechanical standards such as GB/T 150 for pressure vessels and JB/T 6441-2008 for compressor safety valves, which may differ from general ISO standards.
The summary above provides a high-level overview of GB 7956.23-2019. 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 7956.23-2019 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