[{"data":1,"prerenderedAt":73},["ShallowReactive",2],{"q-fire-109-1-water-chemical-021":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-021","fire-109-1-water-chemical-021",109,1,21,"室內消防栓中之減水警報裝置，應於水量減至多少時發出警報？",{"A":16,"B":17,"C":18,"D":19},"1\u002F2","1\u002F3","1\u002F4","1\u002F5","A",null,[],false,"本題考點：呼水裝置之減水警報裝置，於呼水槽水量減至何種程度時應發出警報。\n【正解理由】依《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，減水警報裝置的檢查方法是關閉補給水閥、再打開排水閥確認其功能，判定方法明定「當水量減少到二分之一時應發出警報」。連結送水管、射水設備、泡沫滅火設備、水霧滅火設備、冷卻撒水設備及消防專用蓄水池等各章之呼水裝置，判定體例與數值完全一致，室內消防栓設備之呼水裝置亦循此標準，故選 A。\n【逐項排除】\n(A) 二分之一即判定方法所載之警報動作水位，為應選者。\n(B) 三分之一並非呼水裝置之判定值，該比例是壓力水箱內空氣應占水箱容積的規定，屬加壓送水裝置的另一項要求。\n(C) 四分之一（25％）是泡沫滅火設備 25％還原時間所用之比例，與呼水槽水位判定無關。\n(D) 五分之一未見於呼水裝置判定方法；若等到僅剩五分之一才示警，已失去及早發現補給水異常或吸水障礙的檢查目的。\n【記憶點】呼水槽「少一半就叫」——減水警報動作水位為二分之一。","呼水裝置的功能，是在幫浦位置高於水源水面時，使吸水管與幫浦本體內經常保持滿水，避免幫浦啟動時空轉、吸不上水而失去加壓能力。其組成包含呼水槽、補給水管、溢水用排水管、自動給水裝置、減水警報裝置與底閥，檢修基準對每一項都有對應的檢查與判定。\n各項判定方法整理：閥類的開、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，且當呼水槽水量減少時應能自動給水；減水警報裝置應無變形、損傷、顯著腐蝕，且當水量減少到二分之一時應發出警報；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時應能連續溢水出來，關閉呼水管制水閥後呼水漏斗的水應無減少，以驗證底閥之逆止效果。操作口訣可記成「關補給、開排水，看警報響不響」。\n易混淆概念對照：減水警報裝置監視的是呼水槽水位；流水檢知裝置監視的是撒水配管內的流水；啟動用水壓開關裝置監視的是配管壓力下降並據以啟動幫浦。三者同屬水系統的訊號元件，但訊號來源與動作條件完全不同，命題常把三者的名稱互換設陷。另外，自動給水裝置與減水警報裝置的差別在於前者是「補水」、後者是「示警」，兩者都以呼水槽水量為判斷依據，但功能不可互相取代。\n延伸考點：《各類場所消防安全設備設置標準》第 38 條規定，室內消防栓設備之緊急電源應使用發電機設備或蓄電池設備，其供電容量應供其有效動作三十分鐘以上；呼水裝置與加壓送水裝置的性能檢查，常與緊急電源切換一併命題。另可對照重力水箱之構造要求，其應設有水位計、排水管、溢水用排水管、補給水管及人孔之裝置，與呼水槽同樣以「補給、溢流、排水」三管維持定量水位，觀念可互相印證。",true,[28,32,36,40,44,48],{"webId":29,"stem":30,"number":31,"year":11,"session":12},"fire-109-1-water-chemical-020","用於防護電氣設施之水霧滅火設備進行放水試驗時，最末端放射區域全部水霧噴頭之放水壓力均應能達到多少壓力以上？",20,{"webId":33,"stem":34,"number":35,"year":11,"session":12},"fire-109-1-water-chemical-022","室內消防栓之箱面字樣，每字不得小於多少平方公分？",22,{"webId":37,"stem":38,"number":39,"year":11,"session":12},"fire-109-1-water-chemical-019","某室內停車空間設置低發泡固定式泡沫滅火設備，每次檢修作業時，應選擇全部放射區域數多少比例以上之放射區域進行逐區放水試驗，測其放射分布及放射壓力？",19,{"webId":41,"stem":42,"number":43,"year":11,"session":12},"fire-109-1-water-chemical-023","下列有關室內消防栓箱之敘述，何者正確？",23,{"webId":45,"stem":46,"number":47,"year":11,"session":12},"fire-109-1-water-chemical-018","移動式泡沫滅火設備進行綜合檢查作業時，發泡倍率應在幾倍以上？",18,{"webId":49,"stem":50,"number":51,"year":11,"session":12},"fire-109-1-water-chemical-024","室外消防栓設備之水帶箱設置，箱內應配置口徑 63 毫米及長多少公尺之水帶 2 條？",24,[53,57,61,65,69],{"webId":54,"year":55,"stem":56,"number":13},"fire-111-1-water-chemical-021",111,"下列有關乾粉滅火設備設置之規定，何者正確？",{"webId":58,"year":59,"stem":60,"number":13},"fire-110-1-water-chemical-021",110,"依各類場所消防安全設備設置標準，應就水霧、泡沫、乾粉、二氧化碳滅火設備等選擇設置之場所，下列場所何者得使用預動式自動撒水設備？",{"webId":62,"year":63,"stem":64,"number":13},"fire-108-1-water-chemical-021",108,"某鍋爐房樓地板面積為 20 m×15 m，依法其所需之滅火效能值為何？",{"webId":66,"year":67,"stem":68,"number":13},"fire-107-1-water-chemical-021",107,"有關乾粉滅火設備配管設置規定，下列敘述何者正確？",{"webId":70,"year":71,"stem":72,"number":13},"fire-106-1-water-chemical-021",106,"裝置水霧滅火設備之室內停車空間，其排水設備應符合之規定，下列何者錯誤？",1785123167131]