GB5959.13-2008

Safety in electroheat installations - Part 13: particular requirements for electroheat installation with explosive atmosphere

电热装置的安全第13部分: 对具有爆炸性气氛的电热装置的特殊要求

GB 5959.13-2008 は現行の中国強制国家規格です：Safety in electroheat installations - Part 13: particular requirements for electroheat installation with explosive atmosphere。業界：電子。テーマ：製品安全。施行日：2009年4月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard applies specifically to electroheat installations operating in explosive atmospheres, such as drying ovens and curing furnaces used for workpieces treated with flammable or explosive solvents and paints. It is not applicable to electroheat installations with protective or controlled atmospheres. This standard must be used in conjunction with GB 5959.1-2005, which covers the general safety requirements for electroheat installations.

技術要求

This standard specifies the particular safety requirements for the design, construction, and operation of industrial electroheat equipment in hazardous environments. The core technical requirements are categorized into several key areas: Furnace Structure and Heating Elements: The furnace chamber must be designed to prevent local overheating and avoid sparks from friction or collisions. Heating element surface temperatures must not exceed 80% of the ignition temperature of the explosive gases released by the workpieces. Fixed supports, furnace shells, and insulation layers must be made of non-combustible materials. Ventilation and Explosion Relief: The installation requires a forced air circulation system to prevent the accumulation of flammable gases, ensuring the maximum volume concentration does not exceed 25% of the lower explosive limit. Exhaust outlets must be positioned in the highest concentration areas. Furthermore, the furnace chamber must be equipped with explosion relief doors or valves. The relief area must be no less than 0.05 square meters per cubic meter of furnace volume, and the relief direction must not endanger personnel. Control and Interlocking Systems: The equipment must feature automatic temperature control and over-temperature alarms. Heating and workpiece conveyor systems can only start after the circulation and exhaust fans are running, and the heating system must automatically shut down if ventilation fails. A combustible gas concentration monitoring system must be interlocked with the heating system. Electrical Safety and Grounding: Electrical equipment must comply with relevant explosion-proof standards, such as GB 3836.1-2000 and GB 50058-1992. The insulation resistance between heating elements and the furnace body must be no less than 1MΩ. The furnace body must be reliably grounded with a resistance of no more than 10Ω, and a separate electrostatic protection ground with a resistance of no more than 100Ω must be established.

試験方法

Before commissioning, the installation must undergo specific safety performance tests. These include verifying the actual exhaust volume against the nameplate rating, calibrating the concentration alarms and temperature control instruments, and inspecting the mechanical strength and positioning of the explosion relief devices. Additionally, routine safety checks must be performed regularly. Before personnel enter the furnace chamber for maintenance, the heating system must be de-energized and the internal atmosphere must be purged to safe concentration levels. All portable electric tools and lighting used inside must be explosion-proof, with continuous external monitoring.

よくある質問

What products are regulated under GB 5959.13-2008?

This standard applies to electroheat installations operating in explosive atmospheres, such as drying ovens and curing furnaces used for workpieces treated with flammable or explosive solvents and paints. It does not apply to electroheat installations with protective or controlled atmospheres.

Is GB 5959.13-2008 a mandatory standard?

It is important to note that all technical content in this standard is mandatory except for Chapter 16. It must be used in conjunction with GB 5959.1-2005, which covers the general safety requirements for electroheat installations.

How does GB 5959.13-2008 relate to international IEC standards?

Unlike other parts of the GB 5959 series which adopt corresponding IEC 60519 standards, Part 13 is an original Chinese standard specifically addressing explosive atmospheres. It references IEC 60079 series standards for the design and installation of electrical equipment in explosive gas environments.

The summary above provides a high-level overview of GB 5959.13-2008. To ensure complete compliance for your industrial electroheat installations entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5959.13-2008 today to access all detailed parameters, safety protocols, and testing procedures.

適用のヒント

種別: 安全
CCS: K60
ICS: 25.180.10
所管部門: Ministry of Industry and Information Technology
技術委員会: Ministry of Industry and Information Technology