[{"data":1,"prerenderedAt":73},["ShallowReactive",2],{"q-fire-108-1-water-chemical-034":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-108-1-水與化學系統消防安全設備概要-034","fire-108-1-water-chemical-034",108,1,34,"依各類場所消防安全設備設置標準之規定，水霧滅火設備之加壓送水裝置使用消防幫浦時，用於防護電氣設備者，每一個水霧噴頭壓力依規定均應達到多少以上？",{"A":16,"B":17,"C":18,"D":19},"1.7 kgf\u002Fcm2","2.5 kgf\u002Fcm2","2.7 kgf\u002Fcm2","3.5 kgf\u002Fcm2","D",null,[],false,"本題考點：水霧滅火設備以消防幫浦加壓送水時的出水壓力,以及「防護電氣設備」加重規定的適用。\n【正解理由】依《各類場所消防安全設備設置標準》第六十五條第二項第二款,出水壓力應核算管系最末端一個放射區域全部水霧噴頭放水壓力均能達每平方公分二點七公斤以上或 0.27MPa 以上,但書明定「用於防護電氣設備者,應達每平方公分三點五公斤以上或 0.35MPa 以上」。題幹既指明用於防護電氣設備,即應適用但書的三點五,故選 D。\n【逐項排除】\n(A) 1.7 kgf\u002Fcm2 是第三十七條室內消防栓壓力水箱必要壓力算式 P=P1+P2+P3+1.7 的常數,與水霧噴頭放水壓力無關。\n(B) 2.5 kgf\u002Fcm2 不在第六十五條所列的門檻內,該款只有二點七與三點五兩個數值。\n(C) 2.7 kgf\u002Fcm2 是本文的一般情形放水壓力,適用於非防護電氣設備者,本題因防護對象是電氣設備而被但書排除。\n(D) 3.5 kgf\u002Fcm2(0.35MPa)正是但書對防護電氣設備所定的壓力下限,為正確答案。\n【記憶點】水霧一般二點七,遇電氣升到三點五。","第六十五條同時規範出水量與出水壓力:出水量為每分鐘一千二百公升以上,放射區域二個以上時提高為每分鐘二千公升以上;出水壓力則是每平方公分二點七公斤,防護電氣設備者每平方公分三點五公斤。為什麼防護電氣設備要加壓?水霧滅火靠的是霧化後的細水粒帶走熱並隔絕氧氣,水粒愈細、導電路徑愈不易連續;放水壓力不足時霧化不完全、容易形成連續水流而降低絕緣性,因此條文對電氣設備另設較高的壓力下限,這也是水霧設備能用於變壓器室等電氣設備處所的前提。\n單位換算是本條另一個考點:條文自己採一公斤每平方公分約當 0.1MPa 的對應寫法,二點七對 0.27MPa、三點五對 0.35MPa;若換成水頭,一公斤每平方公分約相當於十公尺水頭。\n跨設備對照可以一起記:泡沫設備依第七十七條,泡沫噴頭放射壓力為每平方公分一公斤以上或 0.1MPa 以上,泡沫消防栓則為每平方公分三點五公斤以上;自動撒水設備依第五十八條,撒水頭放水壓力上限為每平方公分十公斤以下或 1MPa 以下;室內消防栓依第三十七條,瞄子放水壓力超過每平方公分七公斤時應採取有效減壓措施。壓力題只要先問「哪個設備、哪個位置、上限還是下限」,就不會互相張冠李戴。此外第六十二條把水霧滅火設備的緊急電源、配管、配件、屋頂水箱、竣工時之加壓送水試驗、流水檢知裝置、啟動裝置及一齊開放閥,分別準用第三十八條、第四十四條、第四十五條及第五十一條至第五十三條,是同一條文群的延伸考點。",true,[28,32,36,40,44,48],{"webId":29,"stem":30,"number":31,"year":11,"session":12},"fire-108-1-water-chemical-033","某百貨商場（10 樓以下）內設有一般反應型撒水頭 15 個，試問其消防幫浦最低出水量應為何？",33,{"webId":33,"stem":34,"number":35,"year":11,"session":12},"fire-108-1-water-chemical-035","依各類場所消防安全設備檢修及申報作業基準，有關室內消防栓設備呼水裝置之減水警報裝置，當水量減少至多少前應發出警報？",35,{"webId":37,"stem":38,"number":39,"year":11,"session":12},"fire-108-1-water-chemical-032","依法令規定下列場所何者應設置滅火器？",32,{"webId":41,"stem":42,"number":43,"year":11,"session":12},"fire-108-1-water-chemical-036","依各類場所消防安全設備設置標準之規定，高發泡放出口在全區放射防護區域內，樓地板面積每多少平方公尺應至少設置 1 個，且能有效放射至該區域，並附設泡沫放出停止裝置？",36,{"webId":45,"stem":46,"number":47,"year":11,"session":12},"fire-108-1-water-chemical-031","第四種乾粉滅火藥劑儲存容器，有關充填比之規定，下列何者正確？",31,{"webId":49,"stem":50,"number":51,"year":11,"session":12},"fire-108-1-water-chemical-037","進行滅火器之檢查時，有關一般注意事項，下列何者錯誤？",37,[53,57,61,65,69],{"webId":54,"year":55,"stem":56,"number":13},"fire-111-1-water-chemical-034",111,"第五種滅火設備除滅火器外之其他設備，有關滅火效能值核算之規定，下列何者錯誤？",{"webId":58,"year":59,"stem":60,"number":13},"fire-110-1-water-chemical-034",110,"依消防安全設備及必要檢修項目檢修基準，乾粉加壓式滅火器性能檢查之檢查抽樣頻率，應幾年實施一次性能檢查？",{"webId":62,"year":63,"stem":64,"number":13},"fire-109-1-water-chemical-034",109,"乾粉滅火設備使用加壓或蓄壓用氣體容器，其所使用之氣體為下列何者？",{"webId":66,"year":67,"stem":68,"number":13},"fire-107-1-water-chemical-034",107,"依 NFPA 2001 之規定，潔淨式氣體滅火系統於一般場所之藥劑放射時間（達設計濃度 95%之時間），下列敘述何者正確？",{"webId":70,"year":71,"stem":72,"number":13},"fire-106-1-water-chemical-034",106,"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 ？",1785123167677]