GB 12358-2024 \"General Technical Requirements for Environmental Gas Detection and Alarm Instruments in Workplaces\", to come into effect on June 1, 2025

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This post was last edited by zhoudingshengs on 2025-1-7 at 12:36. GB 12358-2024 \"General Technical Requirements for Environmental Gas Detection and Alarm Instruments in Workplaces\" was proposed and is under the jurisdiction of the Ministry of Emergency Management of the People’s Republic of China. It was first issued as GB 12358-1990 in 1990, and was revised for the first time in 2006 ； This is the second revision, to be implemented on June 1, 2025. Compared with GB 12358-2006, apart from structural adjustments and editorial changes, the main technical differences in GB 12358-2024 are as follows: 1. 10 terms and definitions have been removed: sensor, detection range, stability, response time, monitoring status, alarm status, fault status, time-weighted average allowable concentration, short-term exposure allowable concentration, and maximum allowable concentration ； 2. 12 terms and definitions have been revised: detector, indicator, alarm, gas detector, gas alarm, gas detection alarm, detection error, alarm error, alarm setpoint, repeatability, zero gas, standard gas ； 3. 23 new terms and definitions have been added: portable instruments, fixed instruments, pump-driven instruments, diffusion-type instruments, contact-type instruments, non-contact instruments, upper measurement limit, minimum response value, display resolution, instrument drift, indication response time, alarm response time, maximum gas collection distance, effective detection distance, adjustment, calibration, integrated concentration, lower explosive limit, volume fraction, occupational exposure limit, concentration posing an immediate threat to life and health, toxic and harmful gases, and flammable gases ； 4. The classification requirements have been changed (see Chapter 4, 2006 edition) ； 5. The appearance requirements and testing requirements for the instrument have been changed ； 6. Added general requirements and test requirements for gas detectors, gas alarms, gas detection and alarm devices, and contactless instruments ； 7. Added requirements for sound and light signals, as well as testing requirements, for gas detection alarms and alarm devices ； 8. Added requirements for the maximum gas collection distance, flow rate, and testing criteria of pump-type instruments ； 9. The orientation requirements and test requirements have been changed ； 10. Changed the performance requirements and test requirements for response time ； 11. The performance requirements and testing requirements for high-speed airflow have been modified ； 12. The requirements for full-scale indication deviation and testing requirements have been removed ； 13. The requirements for insulation voltage withstanding capacity and the testing requirements have been modified ； 14. The requirements and test conditions for high- and low-temperature tests have been modified ； 15. The test requirements and conditions for constant humid heat have been modified ； 16. Changes were made to the radiated electromagnetic field test, electrostatic discharge test, and electrical transient pulse test ； 17. Added performance requirements and test requirements for surge (impulse) immunity and conductive interference immunity induced by radio frequency fields ； 18. The acceleration conditions for the vibration test and the drop height conditions for the drop test in the vibration and drop test have been modified ； 19. Added requirements for steam interference and testing requirements ； 20. The explanation regarding the impact of interfering gases has been removed ； 21. Added wireless communication requirements and testing requirements ； 22. Added functional safety requirements and testing requirements ； 23. The content of the main technical parameters of the product and the requirements for implementation standards in the product logo regulations have been modified ； 24. The requirements for inspection rules have been changed (see Chapter 7, Chapter 8 of the 2006 edition) ； 25. Added content regarding usage condition restrictions in the product manual ； 26. Requirements for the use of instruments have been added, including requirements for instrument selection, adjustment, calibration, and regular inspection (see Chapter 11). Chapter 11 of this mandatory standard adds requirements for the use of instruments, including specifications for instrument selection, adjustment intervals (not exceeding 3 months/6 months), calibration intervals (not exceeding 1 year), and periodic inspection intervals (not exceeding 3 years).