GB29550-2013
General safety technique conditions for gas in civil building
民用建筑燃气安全技术条件
GB 29550-2013 is a current mandatory Chinese national standard for General safety technique conditions for gas in civil building. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of May 1, 2014.
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 civil buildings utilizing piped city gas with a pressure not exceeding 0.4 MPa. It covers general safety technical requirements for city gas, gas pipelines and equipment, gas burning appliances, smoke exhaust systems, and alarms with emergency shut-off valves. It is not applicable to industrial gas systems or high-pressure transmission pipelines. The standard is essential for manufacturers and engineers involved in the design, installation, and maintenance of residential and commercial gas systems within China.
Technical requirements
This standard specifies the general safety technique conditions for gas in civil buildings, covering city gas, gas pipelines and equipment, gas burning appliances, smoke exhaust systems, and alarms with emergency shut-off valves. Certain clauses regarding appliance safety protection devices, adaptability, and rated pressure are mandatory. Compliance with these mandatory clauses is essential for market access in China. The standard requires that city gas quality and categories comply with referenced national standards, and it provides specific guidelines for adjusting supply pressure based on altitude variations. For gas pipelines and equipment, it mandates that materials, fittings, and connection performance meet stringent criteria, including strength and tightness tests. Equipment such as pressure regulators, meters, and valves must have a design life of over 10 years and include necessary technical documentation. Gas burning appliances must be equipped with flameout protection devices, and semi-enclosed appliances must have anti-backdraft measures. Appliances must demonstrate good combustion performance without incomplete combustion, carbon precipitation, flashback, or flame lift under specified test pressures. The standard also details requirements for smoke exhaust systems based on appliance types (open, semi-enclosed, enclosed) and mandates the interlocking of gas leak alarms with emergency shut-off valves, which should ideally use low-voltage power and pulse-closing mechanisms.
Testing methods
The standard references several testing methods and evaluation procedures to ensure compliance. Connection performance of pipes and fittings must undergo strength tests at 1.5 times the design pressure and tightness tests at 1.0 times the design pressure, adhering to the conditions specified in CJJ 94. For gas burning appliances, adaptability is evaluated using limit gases and test pressures ranging from 0.5 to 1.5 times the rated pressure ($P_n$), following the methodologies outlined in GB/T 13611 and GB/T 16411. Additionally, the standard specifies performance criteria for exhaust systems, requiring specific wind pressure and air volume metrics based on the appliance's thermal load, and sets concentration thresholds for gas leak and carbon monoxide alarms to trigger interlocked shut-off valves.
FAQs
What products and systems are regulated under GB 29550-2013?
GB 29550-2013 applies to civil buildings using piped city gas with a pressure not exceeding 0.4 MPa. It covers city gas, gas pipelines and equipment, gas burning appliances, smoke exhaust systems, and alarms with emergency shut-off valves.
Are there any mandatory requirements in GB 29550-2013?
Yes, certain clauses within the standard are mandatory, specifically those concerning appliance safety protection devices (e.g., flameout protection), appliance adaptability, and rated pressure requirements. Manufacturers must ensure full compliance with these mandatory clauses.
Does GB 29550-2013 address altitude adjustments for gas pressure?
Yes, for areas with an altitude greater than 500 meters, the standard requires that the gas supply pressure before appliances be corrected based on changes in gas density. It provides a reference table in Appendix A for adjusting low-pressure appliance rated pressures ($P_n$) according to different altitudes.
The summary above provides a high-level overview of GB 29550-2013. 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 29550-2013 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- P45
- ICS
- 91.140
- Competent department
- Ministry of Housing and Urban-Rural Development
- Technical committee
- Ministry of Housing and Urban-Rural Development