[{"data":1,"prerenderedAt":73},["ShallowReactive",2],{"q-fire-106-1-water-chemical-035":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-106-1-水與化學系統消防安全設備概要-035","fire-106-1-water-chemical-035",106,1,35,"乾式比濕式系統的撒水頭數量應追加百分之多少？",{"A":16,"B":17,"C":18,"D":19},"5","10","30","50","D",null,[],false,"本題考點：乾式（及預動式）自動撒水設備因流水檢知裝置二次側配管內為空氣、放水有延遲，計算撒水頭同時開放個數時必須加成的規定。\n【正解理由】依《各類場所消防安全設備設置標準》第 57 條，自動撒水設備之水源容量係依撒水頭同時開放個數乘以規定放水量與時間計算；同條並明定採用乾式或預動式流水檢知裝置者，其應計算之撒水頭數量為濕式表列數量之 1.5 倍。1.5 倍即在濕式基準上再加半，換算為追加百分之五十，故選 D。\n【逐項排除】\n(A) 5：與條文倍數完全不符。乾式的放水延遲是以「數量加半」的量級補償，不是個位數百分比的微調。\n(B) 10：同屬低估。二次側充壓空氣必須先由撒水頭排出才會出水，前段時間幾乎不具滅火水量，一成的加成無法涵蓋。\n(C) 30：常見誘答，但條文寫的是 1.5 倍而非 1.3 倍，換算後固定為 50%，法無 30% 之規定。\n(D) 50：1.5 倍等於原數量再加二分之一，正是追加百分之五十，與第 57 條文義一致。\n【記憶點】乾式、預動式撒水頭「算一倍半」，比濕式多五成。","自動撒水設備的水源容量並非依全棟撒水頭總數計算，而是採「同時開放個數」的假想火災模型：假設火災只會使火點周圍一定數量的撒水頭動作，再以每顆 80 L\u002Fmin、持續 20 分鐘（部分場所為 30 分鐘）回推水量。因此同時開放個數是整個水源與加壓送水裝置容量的基準參數，動它就等於動幫浦揚水量，命題者特別愛考。\n乾式系統的加成理由來自其構造：流水檢知裝置二次側平時充填壓縮空氣，撒水頭動作後空氣先洩放，乾式閥才開啟送水，從動作到實際出水存在「排氣時間」。這段時間火勢持續成長，等於前幾顆撒水頭的滅火效果被打折，法規遂以增加計算數量（1.5 倍）的方式，在設計端補回水量與流量餘裕。預動式雖以探測器連動先行開閥，但二次側同樣可能為空氣，故一併適用。\n易混淆概念對照：濕式二次側常時充水，撒水頭一破即出水，無加成；乾式為避免寒冷或未空調場所結凍而採空氣，代價是延遲，故加成；開放式（放水型）撒水設備因撒水頭無感熱元件，由一齊開放閥控制整個放水區域，計算方式改依放水區域內全部撒水頭，與本題的倍數規則屬不同體系，勿混為一談。\n記憶數字對照：撒水頭放水量 80 L\u002Fmin 以上、放水壓力 1 kgf\u002Fcm² 以上、乾式與預動式數量 ×1.5。同一條文的另一種考法是直接給濕式表列個數（例如 10 個）再問乾式應以幾個計算（答 15 個），或反過來問水源容量公升數，計算路徑完全相同。\n※ 條號請以現行法規為準；表列同時開放個數曾隨場所分類調整，作答仍以該年度條文之 1.5 倍原則為準。",true,[28,32,36,40,44,48],{"webId":29,"stem":30,"number":31,"year":11,"session":12},"fire-106-1-water-chemical-034","第一種乾粉滅火藥劑，全區放射方式所需滅火藥劑量為多少 kg\u002Fm ？",34,{"webId":33,"stem":34,"number":35,"year":11,"session":12},"fire-106-1-water-chemical-036","低壓式二氧化碳噴頭之放射壓力為每平方公分多少公斤以上？",36,{"webId":37,"stem":38,"number":39,"year":11,"session":12},"fire-106-1-water-chemical-033","二氧化碳局部放射方式依規定所核算之滅火藥劑量，應於多少秒內全部放射完畢？",33,{"webId":41,"stem":42,"number":43,"year":11,"session":12},"fire-106-1-water-chemical-037","消防幫浦之全閉揚程應為性能曲線上全揚程之百分之多少以下，方符合檢修基準要求？",37,{"webId":45,"stem":46,"number":47,"year":11,"session":12},"fire-106-1-water-chemical-032","二氧化碳全區放射方式之安全裝置，啟動裝置開關或拉桿開始動作至儲存容器之容器閥開啟，設有多少秒以上之遲延裝置？",32,{"webId":49,"stem":50,"number":51,"year":11,"session":12},"fire-106-1-water-chemical-038","乾粉全區放射所核算之滅火藥劑量須於幾秒內放射完畢？",38,[53,57,61,65,69],{"webId":54,"year":55,"stem":56,"number":13},"fire-113-1-water-chemical-035",113,"惰性氣體進行高壓式全區放射綜合檢查，下列敘述何者錯誤？",{"webId":58,"year":59,"stem":60,"number":13},"fire-112-1-water-chemical-035",112,"二氧化碳滅火設備之滅火藥劑儲存容器，其設置規定下列何者錯誤？",{"webId":62,"year":63,"stem":64,"number":13},"fire-111-1-water-chemical-035",111,"二氧化碳滅火設備採全區放射，其噴頭設置規定下列何者錯誤？",{"webId":66,"year":67,"stem":68,"number":13},"fire-110-1-water-chemical-035",110,"依消防安全設備及必要檢修項目檢修基準，製造日期超過 10 年或無法辨識製造日期之何種滅火器，非經水壓測試合格，不得再行更換及充填藥劑，應予報廢？",{"webId":70,"year":71,"stem":72,"number":13},"fire-109-1-water-chemical-035",109,"廚房等大量使用火源之處所，多少樓地板面積需有一滅火效能值？",1785129973587]