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廁所小便池阻塞報告
1.
龍科廠廁所小便斗阻塞報告 L6BF3 潘昌隆 May
25, 2007 AUO Proprietary & Confidential AUO Proprietary & Confidential 1
2.
龍科廠廁所小便斗阻塞報告 一、原由 二、現況說明 三、改善方案 四、改善目標及期程 五、結語 AUO Proprietary &
Confidential AUO Proprietary & Confidential 2
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一、原由 本廠從建廠至今廁所小便斗經常發生阻塞狀況, 本廠從建廠至今廁所小便斗經常發生阻塞狀況, 經過廠商諸多改善,目前仍舊偶有阻塞, 經過廠商諸多改善,目前仍舊偶有阻塞,本報告將所 有現況以及各改善措施詳述於後, 有現況以及各改善措施詳述於後,以便於日後追蹤及 改善之依據。 改善之依據。 AUO Proprietary &
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二、現況說明 1.廁所小便斗數量及狀況 樓層 UL20 UL20 ALB10 AL15 AL25 BLB10 A BLB10 B BLB10
C BLB10 D BLB10 E BL10 C BL10 D BL20 E BL30 E BL40 F BL50 N BL50 Q BL50 C 總數 小便斗數量 6 1 3 8 8 2 2 3 7 5 3 4 7 7 7 8 6 5 92 廁所小便斗總數量:92座 經常阻塞(紅色部分):25座 阻塞(不良)比例:27% AUO Proprietary & Confidential 4
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二、現況說明 2.小便斗阻塞記錄(就已知部分) LK廁所阻塞維修紀錄 LK廁所阻塞維修紀錄 時間 地點 發生狀況 2007.05.28 BL10南側男廁 右2個小便斗排水不順 2007.05.21 AL15男廁 BLB10收發室前男 小便斗全數阻塞 1.AL15上下疏通,BLB10疏通無效 2.BLB10阻塞段換管並加清潔口於BLB20天花板 2007.05.09 BL20男廁 小便斗全數阻塞 疏通 2007.05.07 BLB1男廁 小便斗3處阻塞 疏通 2007.04.17 AL15男廁 小便斗全數阻塞 疏通 2007.04.12 AL15男廁 2007.03.29 B棟除L50其他樓層 男廁封閉 小便斗全數阻塞 1.先行疏通 2.BL20男廁改自來水取代原本回收水進水方式 2007.03.13 BL20男廁 小便斗全數阻塞 疏通 2007.02.09 AL15男廁 2006.10.15 2006.02.21 AL15男廁、 AL25男廁 A棟L25男廁、 B棟L10男廁、 B棟L40男廁 處理方式 疏通(以CO2打入排水管加壓) 小便斗全數阻塞,走道滲水 阻塞段換管 小便斗全數阻塞,走道滲水 阻塞段換管 小便斗全數阻塞,走道滲水
A、B棟小便斗改管處理(防治氣塞) 小便斗全數阻塞,走道滲水 A、B棟小便斗改管處理(洩水坡度調整) AUO Proprietary & Confidential 5
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二、現況說明 3.小便斗阻塞狀況 AUO Proprietary &
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三、改善方案 1.加大洩水坡度 實施範圍:B棟L40/L30/L20(已施作) 改善內容:原小便斗後方排水支管為水平無任何洩水坡度,致使排水 流速較為緩慢,故修改管路使其有洩水坡度(約2%),以增加排水速 度。 加大洩水坡度 原為水平管 洩水坡度約2% AUO Proprietary &
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三、改善方案 1.加大洩水坡度 水量計算: 改管後水力坡度為2% 管徑50A 依照曼寧公式式:V=1/n*R2/3*S1/2 得知排水管為流速為 0.635m/s 半滿管流量為 37.4L/mim 滿管最大排水量為 74.8L/mim 小便斗沖水量為 6~8L/min 最大安裝數量8座/支排水管 管徑50A 流速為0.635m/s 半滿狀態 排水管最大排水量 排水管最大排水量74.8L/min>64L/min小便斗最大排水量 最大排水量 小便斗最大排水量 故排水功能O.K. 故排水功能 AUO
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三、改善方案 2.增加透氣管 實施範圍:A棟L15/L25、B棟L40/L30/L20/LB10(已施作) 改善內容:原小便斗後方排水支管之透氣管為1間廁所僅設1組透氣 管,若小便斗連續大量使用容易造成小便斗瞬間積水造成水封氣塞, 致使排水不順,故增加透氣管使其不易氣塞,以增加排水速度。 透氣管 透氣管 增加透氣管 排水管 排水管 或是 增加之透氣管 透氣管 排水管 增加之透氣管 AUO Proprietary &
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三、改善方案 4”排水主管 3.加大排水管徑 實施範圍:B棟LB10及A棟L15(已 施作) 改善內容:原小便斗後方排水支管 穿越樓版後與排水主管間有距離, 造成支管與垂直主管間之管路阻 塞,故加大樓版下方支管管徑,並 同樣保持排水坡度,以降低阻塞機 率。 2”排水管 樓版 2”排水支管 4”排水主管 加大排水管徑 2”排水管 樓版 加大為3”or4” 加大為 排水支管 AUO Proprietary &
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三、改善方案 原可疏通範圍 4”排水主管 4.增設清潔孔 實施範圍:B棟L20/L10/LB10收發 室前及A棟L15(已施作) 改善內容:當排水管路阻塞時,須 以人力疏通管路,通常先拆下小便 斗,利用小便斗後方排水孔疏通後 方管路,能疏通範圍有限,往後部 分皆無法疏通,故於經常發生阻塞 小便斗後方排水支管穿越樓版前後 增設清潔孔,於管路阻塞時可方便 通管,縮短通管時間。 2”排水管 樓版 增設清潔孔 4”排水主管 增設清潔孔 2”排水管 清潔口示意圖 樓版 AUO Proprietary &
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三、改善方案 水泥砂漿阻塞管路 4”排水主管 5.水泥阻塞管路切除重新配置 實施範圍:A棟L15、B棟L20/L30 (已施作) 改善內容:建廠期間因施作程序為 衛生器具先行安裝後做粉刷及瓷 磚,故有部分水泥砂漿因此流入排 水管內,因未全部塞滿管路,當有 尿垢形成時便快速阻塞管路。改善 方式為將阻塞管路切除重新配置。 樓版 4”排水主管 管路切除重新配置 管路重新配置 樓版 水泥砂漿阻塞照片 AUO Proprietary &
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三、改善方案 自來水 廁所洗手台 6.沖洗水更改成為自來水 衛生水 實施範圍:B棟L20(3/29/2007施 作)、 A棟L15(5/26/2007施作)、 改善內容:廠內沖廁水源(衛生用 水)全部均為回收水源(MAU冷凝水 及C/T排水)為了區分是否為水源問 題,故於A、B棟各選擇1間廁所進 行水源改管,將衛生水改為自來水 源測試,原來管路保留作為將來實 驗未成時切換為原衛生用水。 實驗結果: B棟L20: 前一次阻塞時間:3/17/2007 阻塞更改自來水:3/29/2007 再一次阻塞時間:5/9/2007 目前仍持續觀察中 樓版 更改為自來水源 廁所洗手台 增加自來 水源管路 自來水 衛生水 樓版 AUO Proprietary
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三、改善方案 7.尿垢溶解試驗 因詢問台檢科技實驗室無法分析尿垢之定性分析,故自行分析以不同 藥液進行溶解試驗,內容及結果如下: 峯典試驗: 洗廁用無煙鹽酸 90°C熱水 市售通樂 →均無法溶解尿垢 推論:尿垢成份可能為 MgCO3或CaCO3+尿素+ 自行試驗: 10%
HCl 尿酸金屬鹽類(Ma+2 ~ Ca+2 ~ 10% NaOH Na+ ~ K+等金屬離子)故可用 自來水(對照組) HCl溶解。 → 10% HCl可溶解尿垢其他則無 實行問題:若定期或於阻塞時以HCl清洗管路,較高濃度之HCl流入 化糞池內是否會影響化糞池之生物處理效果需再評估。 AUO Proprietary & Confidential 14
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三、改善方案 7.尿垢溶解試驗 自來水、10%HCl、10%NaOH 溶解試驗 a.投入尿垢於實驗溶液 中 b.尿垢溶解狀況(上視 照片) AUO Proprietary
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三、改善方案 7.尿垢溶解試驗 自來水、10%HCl、10%NaOH 溶解試驗 c.攪拌後靜置10min後 狀況 →僅10%HCl達到溶 達到溶 解無沉澱 d.尿垢於10%HCl溶液 中產生氣泡 AUO Proprietary
& Confidential 16
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三、改善方案 8.小便斗實施鹽酸定期清洗 1.實施(實驗)廁所:B棟L20男生廁所 棟 男生廁所(平均每20日阻塞1次) 男生廁所 2.實施方式: 初期實驗 a.頻率:2次/月(15天/次) 次月 天次 b.使用藥液:10%鹽酸(由水處理課提供,無煙,有輕微酸味) c.使用量:每次使用500ml(7個小便斗,平均每個小便斗70ml) d.浸泡時間:15~20mim 其他配合: a.請元鼎清潔公司配合每月2次之清洗 b.清洗前3分鐘小便斗勿沖水或有積水 c.請總務於定期抽化糞池時觀察是否有異於往常狀況發生 AUO Proprietary
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四、改善目標及期程 1.短期目標 解決現有阻塞發生因素 短期目標—解決現有阻塞發生因素 短期目標 ♦目前需有管路阻塞才會疏通管路進而發現有水泥砂漿阻塞管 路,故若有發現管路內有水泥砂漿立即更換管路。 故若有發現管路內有水泥砂漿立即更換管路。 ♦部分廁所 棟)之排水管位於隔間夾層內,若有發現洩水坡 部分廁所(A棟
之排水管位於隔間夾層內 之排水管位於隔間夾層內, 度不足者, 度不足者,仍須改管增加洩水坡度避免有有因流速過慢阻塞可 能。 ♦若有改管或更換管路時,應儘可能增加清潔口於管路阻塞時 若有改管或更換管路時, 可方便通管,縮短通管時間。 可方便通管,縮短通管時間。 ♦若有遇阻塞情況立即疏通管路,可先以 若有遇阻塞情況立即疏通管路,可先以CO2 Purge管路 , 管路 或用通管器通管,若以上二法均無效,則需更換阻塞管路。 或用通管器通管,若以上二法均無效,則需更換阻塞管路。 AUO Proprietary & Confidential 18
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四、改善目標及期程 2.中期目標 加強管理減低阻塞機率 中期目標—加強管理減低阻塞機率 中期目標 ♦定期以大量清水沖洗管路及輔助吸盤清理以降低管路沉積之 可能。 每週 每週1次 可能。(每週
次) ♦定期以鹽酸溶解沉積於管壁之尿垢,以避免日久阻塞管路。 定期以鹽酸溶解沉積於管壁之尿垢,以避免日久阻塞管路。 (2週1次) 週 次 3.長期目標 如何讓管路永不結垢 長期目標—如何讓管路永不結垢 長期目標 ♦分析結垢原因:沖廁水質分析,尿液成分分析及結垢成分分 分析結垢原因:沖廁水質分析,尿液成分分析及結垢成分分 析找出結垢產生之原因進而排除之, 析找出結垢產生之原因進而排除之,從根本解決以期達到管路 永不結垢之最佳方式。 永不結垢之最佳方式。 AUO Proprietary & Confidential 19
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五、結語 目前其他友廠亦有類似小便斗阻塞情況發生, 目前其他友廠亦有類似小便斗阻塞情況發生,處 理方式仍然以通管方式處理, 理方式仍然以通管方式處理,未能有一勞永逸之方法 解決此一問題, 解決此一問題,然而阻塞之廁所通常亦是使用人數最 多之廁所,阻塞所造成之不便更是令人頭痛, 多之廁所,阻塞所造成之不便更是令人頭痛,本報告 並未完全得到所有答案, 並未完全得到所有答案,後續仍需繼續追蹤方能獲得 最佳解法, 最佳解法,以供有類似問題者一個很好追尋問題之方 向。 AUO Proprietary &
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