[{"data":1,"prerenderedAt":73},["ShallowReactive",2],{"q-fire-109-1-water-chemical-012":3},{"subject":4,"subjectSlug":5,"subjectKicker":6,"subjectShort":7,"question":8,"related":27,"sameNumber":52,"hasEssay":26},"水與化學系統消防安全設備概要","water-chemical","水與化學系統 · Water & Chemical","水與化學系統",{"id":9,"webId":10,"year":11,"session":12,"subject":4,"number":13,"stem":14,"options":15,"answer":20,"answerNote":21,"images":22,"imagesPending":23,"lawTimestamp":11,"explanation":24,"explanationDeep":25,"freq":12,"indexable":26},"fire-109-1-水與化學系統消防安全設備概要-012","fire-109-1-water-chemical-012",109,1,12,"消防水系統設置呼水裝置時，其溢水用排水管口徑應在多少尺寸以上？",{"A":16,"B":17,"C":18,"D":19},"25A","32A","40A","50A","D",null,[],false,"本題考點：呼水裝置中「溢水用排水管」之管徑下限。\n【正解理由】候選之《各類場所消防安全設備設置標準》第 37 條、第 42 條、第 58 條就重力水箱僅要求「有水位計、排水管、溢水用排水管、補給水管及人孔之裝置」，明定其應存在而未定口徑；檢修基準呼水裝置之性能檢查亦只給判定方法，即呼水槽水量減少時應能自動給水、水量減少至一半前應發出警報、底閥應無異物附著且呼水漏斗應能連續溢水。溢水用排水管的尺寸下限規定於《消防幫浦加壓送水裝置等及配管摩擦損失計算基準》關於呼水裝置之部分，為 50A 以上。其功能是在補給水裝置失效而持續進水時，把多餘的水安全排掉而不溢流至機房，口徑須大於補給水管才有意義，故選 D。\n【逐項排除】\n(A) 25A 遠小於規定下限，無法承接補給水全開時之進水量。\n(B) 32A 同樣不足，非該基準所定之溢水用排水管尺寸。\n(C) 40A 最接近但仍低於 50A，是本題主要之誘答。\n(D) 50A 與該基準所定之下限相符，為正解。\n【記憶點】呼水裝置溢水用排水管「50A 以上」，功能是溢水而非放水。","呼水裝置的存在前提，是幫浦採吸入揚程配置，也就是水源水面低於幫浦中心，停機後吸水管與幫浦本體會失水而無法自吸。呼水槽以重力補足吸水管與幫浦內部的水，讓幫浦隨時能啟動。整組裝置包含呼水槽、補給水管、溢水用排水管、呼水管、減水警報裝置與底閥，每一件在《各類場所消防安全設備檢修及申報作業基準》呼水裝置之性能檢查都有對應判定：閥類開、關動作應能容易進行；自動給水裝置應無變形、損傷、顯著腐蝕，且呼水槽水量減少時應能自動給水；減水警報裝置在水量減少至一半前應發出警報；底閥應無異物附著、阻塞等吸水障礙，打開幫浦本體上呼水漏斗之制水閥應能連續溢水，再關閉呼水管之制水閥後，呼水漏斗的水應無減少，以此驗證底閥之逆止效果。\n與呼水裝置常一起考的是防止水溫上升用排放裝置，兩者都接在幫浦周邊而方向相反：呼水管把水補進來，排放管在關閉運轉時把熱水排出去，其排放水量以 q＝Ls×C／(60×Δt) 判定。\n配管術語也要分清楚：溢水用排水管處理「水太多」，排水管處理「要放空維修」，補給水管處理「水不足」。三者在第 37 條、第 42 條與第 58 條的重力水箱款項中反覆並列，壓力水箱則另加壓力表、給氣管與空氣壓縮機，並要求水箱內空氣占水箱容積三分之一以上、水箱內壓力及液面減低時能自動補充加壓，空氣壓縮機及加壓幫浦與緊急電源相連接。三條的差別在必要落差與必要壓力的加項：室內消防栓為十七公尺／一點七 kgf\u002Fcm²、室外消防栓為二十五公尺／二點五 kgf\u002Fcm²、自動撒水設備為十公尺／一 kgf\u002Fcm²，常與本題同批出現。",true,[28,32,36,40,44,48],{"webId":29,"stem":30,"number":31,"year":11,"session":12},"fire-109-1-water-chemical-011","乾粉滅火設備之緊急電源應為發電機設備或蓄電池設備，其容量應能使該設備有效動作多少時間以上？",11,{"webId":33,"stem":34,"number":35,"year":11,"session":12},"fire-109-1-water-chemical-013","乾粉滅火設備設置啟動用氣體容器時，其容器之內容積應有多少以上？",13,{"webId":37,"stem":38,"number":39,"year":11,"session":12},"fire-109-1-water-chemical-010","全區放射方式之二氧化碳滅火設備，應設置從啟動裝置動作至二氧化碳放出時間至少多久的遲延裝置？",10,{"webId":41,"stem":42,"number":43,"year":11,"session":12},"fire-109-1-water-chemical-014","測量室內消防栓瞄子直線放水之壓力時，應將壓力表之進水口，放置於瞄子前端多少距離處，讀取壓力表的指示值？",14,{"webId":45,"stem":46,"number":47,"year":11,"session":12},"fire-109-1-water-chemical-009","進行低發泡水成膜泡沫放射試驗時，其 25%還原時間應在多久時間以上？",9,{"webId":49,"stem":50,"number":51,"year":11,"session":12},"fire-109-1-water-chemical-015","公共危險物品室外儲槽場所設置射水設備時，測試之放水壓力應在多少以上？",15,[53,57,61,65,69],{"webId":54,"year":55,"stem":56,"number":13},"fire-113-1-water-chemical-012",113,"自動撒水設備進行檢修之綜合檢查，依據消防安全設備及必要檢修項目檢修基準規定，下列敘述何者錯誤？",{"webId":58,"year":59,"stem":60,"number":13},"fire-112-1-water-chemical-012",112,"依據滅火器認可基準規定，由滅火器所充填之滅火藥劑量判別，下列何者屬大型滅火器？",{"webId":62,"year":63,"stem":64,"number":13},"fire-111-1-water-chemical-012",111,"有關水霧滅火設備，依各類場所消防安全設備設置標準之規定，下列敘述何者正確？",{"webId":66,"year":67,"stem":68,"number":13},"fire-110-1-water-chemical-012",110,"進行乾粉滅火設備性能檢查時，對於滅火藥劑檢查注意事項，溫度及濕度超過多少以上時，應暫停檢查？",{"webId":70,"year":71,"stem":72,"number":13},"fire-108-1-water-chemical-012",108,"主成分為碳酸氫鉀及尿素化合物之乾粉滅火藥劑，採全區放射方式時，每立方公尺防護區域所需滅火藥劑量為多少公斤？",1785129972646]