GB21976.5-2012
Escape apparatus for building fire - Part 5：Escape device
建筑火灾逃生避难器材 第5部分：应急逃生器
GB 21976.5-2012 is a current mandatory Chinese national standard for Escape apparatus for building fire - Part 5：Escape device. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Dec 1, 2012.
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 single-use emergency escape devices designed for trapped personnel during building fires. It covers apparatus consisting of a speed governor, rope, safety belt, and safety hooks. It is specifically intended for one-time use in fire evacuation scenarios. The standard references materials like YB/T 5197 for aviation steel wire ropes.
Technical requirements
The standard specifies appearance quality and structural requirements for main components, including ropes, safety belts, and safety hooks. Manufacturers must ensure metal parts are smooth and free from rust or burrs. Ropes must utilize aviation steel wire ropes compliant with YB/T 5197, while safety belts require specific dimensions and adjustable buckles. It defines load capacity categories (minimum, standard, and maximum) and stringent strength requirements for the entire assembly, safety belts, metal connectors, and safety hooks. The device must withstand tensile loads significantly higher than the maximum operational load without deformation or breakage. Safety hooks must feature reliable locking mechanisms to prevent accidental opening. The standard outlines performance criteria such as descent speed limits under various loads and optional manual speed adjustment features. Furthermore, it mandates reliability testing and corrosion resistance for metal parts. Devices must maintain safe descent speeds even after undergoing salt spray testing and repeated reliability cycles.
Testing methods
Testing procedures include visual inspection for appearance quality and dimensional verification of components. Strength tests apply specified tensile loads to the entire assembly, safety belt, safety hook, and rope. Descent speed tests are conducted under minimum, standard, and maximum loads. Additionally, the standard mandates a reliability test involving 20 consecutive descents and a corrosion resistance test using a salt spray chamber to ensure long-term durability.
FAQs
What products are regulated under GB 21976.5-2012?
It regulates single-use emergency escape devices used for building fire evacuations, specifically those comprising a speed governor, rope, safety belt, and safety hooks.
Are the requirements in this standard mandatory?
Yes, Chapters 5, 7, and 8.1 are mandatory. These cover the core technical requirements, inspection rules, and product marking, while the remaining sections are recommended.
What materials are specified for the escape device ropes?
The standard requires ropes to use aviation steel wire ropes with a diameter of no less than 3mm, compliant with YB/T 5197.
The summary above provides a high-level overview of GB 21976.5-2012. 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 21976.5-2012 today to access all detailed parameters, load tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C85
- ICS
- 13.220.10
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China