UL剛性防火罩

1.1 These requirements describe a test method measuring the resistance of protective materials to rapid-temperature-rise fires.1.1 本文規(guī)定了一個(gè)量測(cè)防護(hù)材料在快速升溫火環(huán)境下耐火性能的實(shí)驗(yàn)方法.1.2 The test method covers a full-scale fire exposure, intended to evaluate the thermalresistance of protective material applied to structural members and the ability of the protective material to withstand the fire exposure.1.2 實(shí)驗(yàn)方法包含一個(gè)全尺寸火災(zāi)實(shí)驗(yàn),用來(lái)評(píng)價(jià)應(yīng)用于結(jié)構(gòu)構(gòu)件的防護(hù)材料的耐熱性能和耐火性能.1.3 The test method also covers a small-scale fire exposure, intended to evaluate the ability of protective materials to withstand a variety of environmental conditions anticipated.1.3實(shí)驗(yàn)方法同時(shí)也包含了一個(gè)小比例火災(zāi)實(shí)驗(yàn),用來(lái)評(píng)價(jià)防護(hù)材料在多種預(yù)期環(huán)境下的耐受能力.2 General2.總則2.1 Units of measurement2.1計(jì)量單位2.1.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information.2.1.1 未加括弧的數(shù)值,加注括弧的為解釋值或近似值.2.2 Undated references2.2沒(méi)有標(biāo)注日期的內(nèi)容2.2.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard.2.2.1 在本標(biāo)準(zhǔn)中出現(xiàn)的任何沒(méi)有標(biāo)注日期的準(zhǔn)則或規(guī)范都可認(rèn)為是參照新版本的準(zhǔn)則或規(guī)范。閥門制造廠應(yīng)提供閥門破壞扭矩，閥軸的強(qiáng)度應(yīng)至少按執(zhí)行機(jī)構(gòu)扭矩的1.15倍定。    緊急切斷閥的全行程關(guān)斷時(shí)間不應(yīng)超過(guò)1s/英寸閥門通徑（如：DN = 6”的閥門，關(guān)斷時(shí)間≤6s）。緊急切斷閥的全行程打開(kāi)時(shí)間應(yīng)符合安全和工藝操作要求。氣動(dòng)執(zhí)行機(jī)構(gòu)應(yīng)配有與閥軸直接相連的閥位指示器。閥的開(kāi)、關(guān)位置應(yīng)采用文字明確標(biāo)識(shí)。執(zhí)行機(jī)構(gòu)與閥體的連接應(yīng)符合ISO 5211標(biāo)準(zhǔn)或制造廠標(biāo)準(zhǔn)。緊急切斷閥的執(zhí)行機(jī)構(gòu)不應(yīng)設(shè)置行程機(jī)械限位裝置。執(zhí)行機(jī)構(gòu)的電子/電氣部分的防爆等級(jí)不應(yīng)低于安裝場(chǎng)所的防爆等級(jí)1.1 These requirements describe a test method measuring the resistance of protective materials to rapid-temperature-rise fires.柔性防火罩是工廠管理中一種有效保護(hù)設(shè)備的措施，它能將煉油廠、石油平臺(tái)、石油化工、熱電站、電器、造船廠和***等場(chǎng)所因火災(zāi)而產(chǎn)生的危害與損失降至低�；�于特定要求，整個(gè)防火罩需確保其在不同時(shí)期能抵抗1400℃的溫度。操作按鈕、控制面板、指示器和自動(dòng)化裝置可以建立快捷。4.6.9  用于緊急切斷閥的電磁閥應(yīng)符合下列規(guī)定：a)  電磁閥應(yīng)選用直接作用式、至少5.5毫米流通孔徑、316不銹鋼閥體；3.2 實(shí)驗(yàn)爐燃燒控制應(yīng)滿足:在燃燒時(shí)間小于或等于60分鐘時(shí):實(shí)驗(yàn)爐時(shí)間溫度曲線下面積