GB19572-2013

Low pressure carbon dioxide extinguishing system and components

低压二氧化碳灭火系统及部件

GB 19572-2013은(는) 현행 중국 강제 국가 표준입니다: Low pressure carbon dioxide extinguishing system and components. 산업: 환경. 주제: 제품 안전. 시행일: 2014년 8월 1일.

적용 여부는 제품 범위, 인증 경로, 주관 당국 공고, 전환 규정에 따라 달라집니다. 컴플라이언스 판단에 사용하기 전에 번역을 의뢰하거나 공식 출처를 확인하세요.

컴플라이언스 개요

이 개요는 현재 영어로만 제공됩니다.

적용 범위

This standard applies to low-pressure carbon dioxide extinguishing systems and their components, where the CO2 extinguishing agent is stored at a low pressure (typically -20°C to -18°C). It is designed for fire protection systems used in industrial and commercial facilities. It does not apply to high-pressure CO2 systems or other types of gaseous fire suppression systems.

기술 요구 사항

The standard specifies comprehensive requirements for the system and its individual components. For the overall system, it mandates a working temperature range of -23°C to 50°C, a maximum storage container volume of 20m³, and a loading factor not exceeding 0.95. The system must feature automatic, manual, and mechanical emergency start functions, along with a leakage alarm that triggers when CO2 loss reaches 10% of the initial charge. For the storage device, the standard requires a design pressure of no less than 2.5MPa. It mandates the use of safety valves and rupture discs as overpressure relief devices, with specific set pressures and reseating pressures. The refrigeration system must maintain internal pressure below 2.15MPa even at 50°C ambient temperature, and thermal insulation must limit CO2 loss to a calculated maximum over 24 hours. Valves, including the master control valve and selector valve, must withstand a hydraulic strength test at 1.5 times the nominal working pressure. They must operate reliably at extreme temperatures (-56.6°C to 50°C) and feature both automatic and manual operation capabilities. The opening and closing times must not exceed 5s, and manual operation force must not exceed 150N. Other components like pressure switches, pressure gauges, and signal feedback devices have strict requirements for action pressure accuracy, insulation resistance, and voltage withstand capabilities. The controller must provide comprehensive control, display, and audible alarm functions, complying with GA 61-2010 for electrical and environmental performance.

시험 방법

The standard outlines a rigorous testing methodology to verify compliance. Key tests include hydraulic strength tests to ensure no deformation or leakage under 1.5 times the working pressure, and gas tightness tests using compressed air or nitrogen to check for leaks. Components must undergo salt spray corrosion testing for 10 days to assess durability. Reliability is verified through repeated action tests (e.g., 100 cycles for valves, 5000 cycles for pressure switches) at both room and extreme temperatures. Additionally, the standard specifies methods for measuring valve equivalent length, nozzle discharge characteristics, and the thermal insulation effectiveness of the storage device.

자주 묻는 질문

What products are regulated under GB 19572-2013?

GB 19572-2013 applies to low-pressure carbon dioxide extinguishing systems and their components, where the CO2 extinguishing agent is stored at a low pressure (typically -20°C to -18°C). It covers storage devices, master control valves, selector valves, check valves, nozzles, and controllers.

Are there any updates from the previous version of GB 19572-2013?

Yes, this version replaces GB 19572-2004. Key updates include the addition of classifications, model designations, and requirements for driving devices. It also modifies requirements for storage container pressure, overpressure relief devices, and refrigeration systems, while deleting outdated sections on driving gas storage containers and drivers.

How does GB 19572-2013 differ from ISO standards?

GB 19572-2013 is tailored specifically for the Chinese market's regulatory environment. It references other national standards like GB 150 for pressure vessels and GA 61-2010 for control devices. Manufacturers must ensure compliance with these specific Chinese GB standards rather than relying solely on ISO equivalents.

The summary above provides a high-level overview of GB 19572-2013. 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 19572-2013 today to access all detailed parameters, tables, and testing procedures.

적용 참고 사항

유형: 제품
CCS: C84
ICS: 13.220.10
주관 부처: National Fire and Rescue Administration
기술 위원회: National Technical Committee on Fire Protection of Standardization Administration of China