ISO 7840小型船舶 耐火燃油軟管 – 標(biāo)準(zhǔn)名稱
ISO 7840 Small craft—Fire-resistant fuel hoses
ISO 7840 小型船舶 耐火燃油軟管

ISO 7840小型船舶 耐火燃油軟管 – 適用范圍
本國際標(biāo)準(zhǔn)規(guī)定了用于輸送汽油或汽油與乙醇和柴油混合燃料或柴油與FAME混合的耐火軟管的一般要求和物理試驗(yàn)，其設(shè)計(jì)工作壓力不超過0.34 MPa，適用于內(nèi)徑小于等于10 mm和0.25 MPa，以及內(nèi)徑不超過63 mm的軟管，船體長度不超過24 m。

本標(biāo)準(zhǔn)適用于艇內(nèi)裝有永久固定燃油系統(tǒng)的小艇所用的軟管,不適用于完全位于艇艉井內(nèi)并與舷外機(jī)直接連接的小艇所用的軟管。

非耐火燃料軟管規(guī)范見ISO 8469。永久安裝的燃油系統(tǒng)規(guī)范見ISO 10088。

This International Standard specifies general requirements and physical tests for fire-resistant hoses for conveying petrol or petrol blended with ethanol and diesel fuel or diesel fuel blended with FAME, designed for a working pressure not exceeding 0,34 MPa for hoses with nominal bore up to and including 10 mm and 0.25 MPa for hoses up to 63 mm inner diameter in craft of hull length up to 24 m.

It applies to hoses for small craft with permanently installed fuel systems. It does not apply to hoses entirely within the splash well at the stern of the craft connected directly to an outboard engine.

Specifications for non-fire-resistant fuel hoses are given in ISO 84691.Specifications for permanently installed fuel systems are given in ISO 10088.

ISO 7840小型船舶 耐火燃油軟管 – 原理
裝有庚烷的軟管著火。在托盤中的燃料點(diǎn)燃后，軟管應(yīng)能承受2.5分鐘的試驗(yàn)而無泄漏。
The hose filled with heptane is subjected to fire. The hose shall withstand the test for 2.5 min without leakage after ignition of the fuel in the tray.

ISO 7840小型船舶 耐火燃油軟管 – 樣品要求
至少應(yīng)依次測試三個軟管樣品。
At least three hose samples shall be tested in turn.

ISO 7840小型船舶 耐火燃油軟管 – 相關(guān)標(biāo)準(zhǔn)
ISO 1307 一般工業(yè)用途的橡膠和塑料軟管 內(nèi)徑及其公差和長度公差
ISO 1402 橡膠和塑料軟管及軟管組合件 液壓試驗(yàn)
ISO 1817 硫化橡膠耐液體測定方法
ISO 7233 橡膠和塑料軟管及軟管組合件 真空性能的測定
ISO 7326 橡膠和塑料軟管 靜態(tài)條件下耐臭氧性能的評定
ISO 10088 小艇 永久性安裝的燃油系統(tǒng)和固定式燃油柜