GB8958-2006
Safety regulation for working under hazardous condition of the oxygen deficiency
缺氧危险作业安全规程
GB 8958-2006 is a current mandatory Chinese national standard for Safety regulation for working under hazardous condition of the oxygen deficiency. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Dec 1, 2006.
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 applies to oxygen-deficient hazardous work environments and personnel protection. It covers various confined spaces, including enclosed equipment (e.g., ship holds, storage tanks), underground confined spaces (e.g., pipelines, tunnels), and above-ground confined spaces (e.g., fermentation pools, cold storage). This standard is mandatory for all operations involving potential oxygen deficiency. It classifies work into general hazardous work and special hazardous work.
Technical requirements
The standard defines oxygen deficiency as an environment where the oxygen content is below 0.195 (19.5%), updating the threshold from the previous GB 8958-1988. It specifies requirements for general hazardous work, emphasizing the principle of test before work and continuous monitoring during operations. For special hazardous work where other toxic gases may be present, simultaneous testing of oxygen and harmful gases is required. Personnel must use isolated respiratory protective equipment, and the use of filter masks is strictly prohibited. Additionally, pure oxygen must not be used for ventilation, and comprehensive safety education, training, and emergency rescue plans are mandated.
Testing methods
The standard requires oxygen content measurement before and during operations using calibrated and reliable analytical instruments that comply with relevant national standards such as GB 12358. For special hazardous work, simultaneous testing of harmful gases (e.g., hydrogen sulfide, carbon dioxide, methane) is required alongside oxygen testing. Pre-surveys using test drilling methods are also mandated for tunneling or excavation operations.
FAQs
What is the oxygen concentration threshold defined as oxygen deficiency in GB 8958-2006?
The standard defines oxygen deficiency as an environment where the oxygen content is below 0.195 (19.5%), which is an update from the previous 18% threshold in the 1988 version.
What types of confined spaces are covered under this standard?
It covers enclosed equipment (e.g., ship holds, storage tanks), underground confined spaces (e.g., pipelines, tunnels), and above-ground confined spaces (e.g., fermentation pools, cold storage).
What respiratory protective equipment is mandated by GB 8958-2006?
Workers must use isolated respiratory protective devices such as air respirators or hose masks. The use of filter-type masks is strictly prohibited.
The summary above provides a high-level overview of GB 8958-2006. To ensure complete compliance for your operations entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 8958-2006 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- C71
- ICS
- 13.100
- Competent department
- Ministry of Emergency Management
- Technical committee
- Ministry of Emergency Management
Relationships
Replaces:GB 8958-1988