GB27897-2011

Class A foam extinguishing agent

A类泡沫灭火剂

GB 27897-2011은(는) 현행 중국 강제 국가 표준입니다: Class A foam extinguishing agent. 산업: 환경. 주제: 제품 안전. 시행일: 2012년 3월 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 Class A foam extinguishing agents, which are primarily used for extinguishing Class A fires and providing thermal insulation protection. It is mandatory for all manufacturers producing these specific fire extinguishing agents for the Chinese market. The standard covers two product types: MJAP (for Class A fires and thermal insulation) and MJABP (for Class A fires, non-water-soluble liquid fuel fires, and thermal insulation). It does not apply to traditional low-expansion foam agents solely designed for Class B fires without Class A capabilities.

기술 요구 사항

The standard specifies the physical and chemical requirements for foam concentrate and foam solution. For the foam concentrate, it regulates parameters such as freezing point, resistance to freeze-thaw cycles, specific fluidity, pH value, and corrosion rate. Suppliers must declare specific characteristic values for their products, including mixture ratios and expansion ratios. For the foam solution, the standard sets limits on surface tension and wetting time under specific mixture ratios. It also defines the requirements for 25% drainage time, expansion ratio, and thermal insulation performance. These parameters ensure the foam's stability and effectiveness during application. For the MJABP type agents, additional performance requirements are specified for extinguishing non-water-soluble liquid fuel fires. This includes specific extinguishing performance levels and 25% burnback time criteria based on gentle or forceful application methods. GB 15308-2006 is referenced for some of these testing parameters. The standard also outlines general requirements stating that the foam concentrate components should be environmentally friendly and non-toxic to biological organisms. Manufacturers must ensure their products do not cause significant environmental pollution during production and application.

시험 방법

Testing methods include evaluating the freezing point and freeze-thaw resistance of the foam concentrate. The standard also details procedures for measuring pH value, corrosion rate, surface tension, and wetting time using specific apparatus like an immersion clip and cotton canvas discs. Foam performance is tested using a standard compressed air foam system to determine expansion ratio and 25% drainage time. Fire extinguishing performance is evaluated through Class A fire tests (using wood cribs) and non-water-soluble liquid fuel fire tests (using steel pans).

자주 묻는 질문

What products are regulated under GB 27897-2011?

GB 27897-2011 regulates Class A foam extinguishing agents, specifically categorized into MJAP (for Class A fires and thermal insulation) and MJABP (for Class A fires, non-water-soluble liquid fuel fires, and thermal insulation).

Are there any mandatory chapters in GB 27897-2011?

Yes, Chapter 5 (Requirements) and Chapter 7 (Inspection Rules) are mandatory, while the remaining chapters are recommended.

How does GB 27897-2011 differ from NFPA 1150-2004?

Unlike NFPA 1150-2004, GB 27897-2011 specifically includes performance indicators for extinguishing non-water-soluble liquid fuel fires and thermal insulation protection, and it primarily focuses on the use of compressed air foam systems.

The summary above provides a high-level overview of GB 27897-2011. 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 27897-2011 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