GB5369-2008

Gerneral-specification for drinking water tank coating of shipbuilding

船用饮水舱涂料通用技术条件

GB 5369-2008 é uma norma nacional chinesa obrigatória vigente: Gerneral-specification for drinking water tank coating of shipbuilding. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de dez. de 2009.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to coating systems applied to the inner surface of drinking water tanks on ships. It is specifically designed for the shipbuilding industry to ensure that coatings do not contaminate potable water. Compliance with this standard is mandatory for all marine drinking water tank coatings entering the Chinese market. It covers both physical-chemical properties and strict hygiene safety evaluations.

Requisitos técnicos

The standard specifies physical and chemical indicators including fineness, solid content, drying time, flexibility, adhesion, salt spray resistance, water resistance, and storage stability. These parameters ensure the durability and mechanical integrity of the coating system in marine environments. Furthermore, the standard establishes mandatory hygiene requirements to prevent water contamination. Coatings must undergo soaking tests to evaluate the release of heavy metals, organic compounds, and other potential pollutants. Manufacturers must ensure that soaked water meets strict limits for basic and additional testing items as defined in the normative appendix. Toxicological safety is also a critical requirement. The coating's soaked water must undergo toxicological tests, including acute oral toxicity (LD50), Ames test, and mammalian cell chromosome aberration tests. When new materials are used, manufacturers must determine leachable substances and their concentrations to ensure they do not exceed safety limits.

Métodos de ensaio

Testing methods involve evaluating physical properties according to referenced standards such as GB/T 1724 for fineness and GB/T 1725 for solid content. Hygiene requirements are tested through a 30-day soaking procedure using specific test water (pH 8, hardness 100mg/L, effective chlorine 2mg/L). The soaked water is then analyzed for various contaminants. Additionally, toxicological evaluations are conducted in four levels based on the concentration of leached substances, following the procedures outlined in the appendices.

Perguntas frequentes

What products are regulated under GB 5369-2008?

GB 5369-2008 regulates coating systems applied to the inner surfaces of drinking water tanks on ships. It ensures these coatings meet both physical durability standards and strict hygiene requirements to prevent water contamination.

Are there any updates from the previous version of GB 5369-2008?

Yes, compared to GB 5369-1985, the 2008 version adds requirements for fineness, solid content, drying time, and storage stability. It also changes the water soaking time to 30 days and introduces mandatory toxicological tests, including Ames and mammalian cell chromosome aberration tests.

How are hygiene requirements evaluated under this standard?

Hygiene requirements are evaluated through a 30-day soaking test where the coating is exposed to specific test water. The water is then tested for heavy metals, organic compounds, and other pollutants. If new materials are used, additional toxicological evaluations are required to determine maximum allowable concentrations.

The summary above provides a high-level overview of GB 5369-2008. To ensure complete compliance for your marine coatings entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5369-2008 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: G51
ICS: 87.040
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: Ministry of Industry and Information Technology

Relações

Substitui:GB 5369-1985