[{"data":1,"prerenderedAt":73},["ShallowReactive",2],{"q-fire-107-1-water-chemical-020":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-107-1-水與化學系統消防安全設備概要-020","fire-107-1-water-chemical-020",107,1,20,"室內消防栓之水源採重力水箱設置，下列何種裝置不屬於該構造應有之裝置？",{"A":16,"B":17,"C":18,"D":19},"補給水管","壓力表","排水管","水位計","B",null,[],false,"本題考點：加壓送水裝置採重力水箱時應有的附屬裝置，以及重力水箱與壓力水箱在裝置項目上的差異。\n【正解理由】依《各類場所消防安全設備設置標準》關於加壓送水裝置之規定，重力水箱靠水箱與消防栓間的高低落差自然產生水壓，箱體本身不加壓，故其應有裝置為「水位計、排水管、溢水用排水管、補給水管及人孔」;壓力表則是以空氣加壓的壓力水箱才需要，用來監視箱內壓力。同標準第 42 條、第 58 條的加壓送水裝置條文即以相同體例分列：重力水箱「有水位計、排水管、溢水用排水管、補給水管及人孔之裝置」,壓力水箱才「有壓力表、水位計、排水管、補給水管、給氣管、空氣壓縮機及人孔之裝置」,故選 B。\n【逐項排除】\n(A) 補給水管用於補足因放水或蒸發減少的水量，使水箱維持所需水位，屬重力水箱應有裝置。\n(B) 壓力表是壓力水箱監視內部空氣壓力所需；重力水箱不以空氣加壓，水壓由落差決定，故不屬其構造應有裝置，為本題答案。\n(C) 排水管供清洗、放空水箱之用，條文列於重力水箱項下。\n(D) 水位計用以判讀有效水量是否足夠，同列於重力水箱應有裝置。\n【記憶點】重力水箱看「水位」、壓力水箱看「壓力」;出現壓力表與空氣壓縮機的一定是壓力水箱。","加壓送水裝置有重力水箱、壓力水箱、消防幫浦三種，原理各異：重力水箱把水放在高處，以位能換水壓，平時不需動力，可靠度最高但受建築高度限制；壓力水箱在密閉箱體內留三分之一以上容積的空氣，以空氣壓縮機加壓，壓力隨放水下降，故條文要求「當水箱內壓力及液面減低時，能自動補充加壓」,且空氣壓縮機及加壓幫浦須與緊急電源相連接；消防幫浦則以動力泵送，是實務上最常見者，同樣須連接緊急電源。附屬裝置的差異就是從這三種原理推出來的：重力水箱不加壓，所以只要能看水位(水位計)、能放空(排水管)、能防止溢流(溢水用排水管)、能補水(補給水管)、能進人檢查(人孔);壓力水箱多了壓力管理需求，才追加壓力表、給氣管與空氣壓縮機。\n必要落差與必要壓力的計算式是同一條文的高頻考點，且各設備常數不同：第 42 條室外消防栓的重力水箱必要落差為「消防水帶摩擦損失水頭＋配管摩擦損失水頭＋25」(公尺),壓力水箱必要壓力則為「消防水帶摩擦損失壓力＋配管摩擦損失壓力＋落差＋2.5」(公斤／平方公分);第 58 條自動撒水設備的重力水箱必要落差為「配管摩擦損失水頭＋10」(公尺),壓力水箱必要壓力為「配管摩擦損失壓力＋落差＋1」(公斤／平方公分)。式尾那個常數，就是該設備末端所需放水壓力換算成水頭的值——記住「1 kgf\u002Fcm² 約等於 10 公尺水頭」這個換算，常數與壓力值就能互推，不必分開硬背。\n易混淆對照：溢水用排水管與排水管不同，前者防止補水過量溢流、後者供放空；人孔是為了內部檢查而設，壓力水箱與重力水箱都有。命題方向多半是把三種加壓送水裝置的裝置清單互換，或把常數(10、25)對調，看考生是否真的理解原理。",true,[28,32,36,40,44,48],{"webId":29,"stem":30,"number":31,"year":11,"session":12},"fire-107-1-water-chemical-019","可燃性高壓氣體場所、加氣站、天然氣儲槽及可燃性高壓氣體儲槽之滅火器，每具滅火器對普通火災應具有 X 個以上之滅火效能值，對油類火災應具有 Y 個以上之滅火效能值，其中 X、Y 分別為下列何者？",19,{"webId":33,"stem":34,"number":35,"year":11,"session":12},"fire-107-1-water-chemical-021","有關乾粉滅火設備配管設置規定，下列敘述何者正確？",21,{"webId":37,"stem":38,"number":39,"year":11,"session":12},"fire-107-1-water-chemical-018","有關大型滅火器之敘述，下列何者正確？",18,{"webId":41,"stem":42,"number":43,"year":11,"session":12},"fire-107-1-water-chemical-022","可燃性高壓氣體場所、加氣站、天然氣儲槽及可燃性高壓氣體儲槽設置滅火器，其設置規定，下列敘述何者正確？",22,{"webId":45,"stem":46,"number":47,"year":11,"session":12},"fire-107-1-water-chemical-017","一電氣設備室長寬高分別為 12 m、8 m 及 4 m，若採二氧化碳全區放射滅火設備防護，藥劑放射後採機械排放，則其排風機之風量應為每分鐘多少立方公尺？",17,{"webId":49,"stem":50,"number":51,"year":11,"session":12},"fire-107-1-water-chemical-023","有關室內消防栓綜合檢查放水量及放水壓力之敘述，下列何者正確？",23,[53,57,61,65,69],{"webId":54,"year":55,"stem":56,"number":13},"fire-113-1-water-chemical-020",113,"有關水道連結型自動撒水設備，下列敘述何者錯誤？",{"webId":58,"year":59,"stem":60,"number":13},"fire-112-1-water-chemical-020",112,"下列何種海龍替代品滅火劑，其熱分解物不至於產生氟化氫（HF）？",{"webId":62,"year":63,"stem":64,"number":13},"fire-111-1-water-chemical-020",111,"電子工業廠房潔淨室設置消防安全設備，下列敘述何者正確？",{"webId":66,"year":67,"stem":68,"number":13},"fire-110-1-water-chemical-020",110,"飛機修理廠、飛機庫樓地板面積在 200 平方公尺以上者，可就水霧、泡沫、乾粉、二氧化碳滅火設備等選擇下列何者設置之？",{"webId":70,"year":71,"stem":72,"number":13},"fire-109-1-water-chemical-020",109,"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？",1785129973213]