純化水管線-酸洗鈍化方案

1、附件20衛(wèi)生級管路酸洗鈍化方案Sanitary Pipe Chemical Pickled & Passivation Procedure起草/審核簽名日期起草人審核/批準目錄TABLE OF CONTENTS1 編制方案的依據(jù)Basis of scheme compilation 32 工作范圍Working scope 3.3 清洗工藝Cleaning process 3.4 清洗過程Cleaning process 5.5 廢液處理Waste liquor treatment 9.6 甲方提供的條件Condition supplied by the owner 97 臨時配管Tempor

2、ary tubing 1.08 檢驗與驗收 Test and accept 1.09 安全 1.1.3 清洗工藝 Cleaning process1 編制方案的依據(jù)Basis of scheme compilation1.1 管道清洗的必要性Necessity of piping cleaning純化水不銹鋼管道在使用前，要進行脫脂、酸洗、鈍化和消毒處理，管道才能達到生產(chǎn)使用的技術要求。Before used stainless steel piping for purified water should be degreased, pickled, passivity and disinfe

3、cted. Only in this way can piping meet technical needs of production and usage.1.2 脫脂工程施工及驗收規(guī)范HG20202-2000。Construction and Acceptance Criteria of Industrial Piping1.3 工業(yè)設備化學清洗質(zhì)量標準 HG/T2387-2007Quality Criteria of Chemical Cleaning for Industrial Equipment1.4 VWS 提供的圖紙Drawings supplied by VWS1.5 管線的

4、材質(zhì)為全部為316L,如有其它材質(zhì)，清洗前必須說明。Material of pipeline is all 316L. Give a description of the material before cleaning if other materials are used.2 工作范圍 Working scope主要為衛(wèi)生級不銹鋼 SS316L 管道Mainly for sanitary SS316L pipe.2.1 從純水制造機到純水TAN儂口前級的循環(huán)管道；Pipes from Orion to water tank and pipes of water tank returning

5、 to the front tank.2.2 純水循環(huán)管道；PW loop distribution Pipes.3.1 采用我公司多年成熟的不銹鋼管道清洗工藝。Adopt cleaning process for stainless steel pipe which we are good at.1.2 管道的清洗工藝為： Piping cleaning process is as follows:臨時配管建立循環(huán)回路form circulation水沖洗 water flush脫脂degrease水沖洗 rinse by water酸洗 pickling, 鈍化passivation水沖洗

6、rinse by water系統(tǒng)恢復 system reset1.3 設備、管線系統(tǒng)內(nèi)不宜清洗的部件：Components in the equipment and piping that are not suitable to be cleaned清洗系統(tǒng)中的儀表類（一次儀表、二次儀表及儀表傳感器）和 UV 殺菌燈、 熱交換器（板式及管殼式）對清洗液敏感的部件應臨時拆除。Other components, such as 1 st loop instrument, 2 nd loop instrument and other transmitter, UV, HX （including pl

7、ate type and tube/shell） that are not in conformity with material and are sensitive to cleaning agent, such as flow meter, conductivity meter, level meter, wiring, tank, etc should be dismantled temporarily.1.4 管線系統(tǒng)內(nèi)不參與清洗的短管等拆除的部件采用浸泡清洗， 清洗完成后經(jīng) 檢驗合格后用塑料保鮮膜包扎，等管線系統(tǒng)清洗完成后再安裝復位。All components did not in

8、volved on the pipeline to be soaked and cleaned. After cleaned and tested, it must be packed with plastic film.Installed and positioned after pipe clean finished.1.5 清洗流程 Cleaning process1.5.1. 所有需要清洗的管道用臨時管道連接形成清洗循環(huán)系統(tǒng)，采用循環(huán)清洗，清洗時建立一個循環(huán)回路.All piping that need cleaning should be connected by temporary

9、 piping to form circulation system. Circulating cleaning is used and one loop was formed when proceeding with cleaning.1.5.2. 清洗流程圖4 清洗過程 Cleaning process所有清洗系統(tǒng)的過程是一樣的。 All cleaning system have the same process.4.1 人工處理 Manual handling4.1.1. 管線在清洗前要做全面檢查，設備材質(zhì)和方案中所列要一致。Pipelines should be inspected i

10、n the overall perspective before cleaning and make sure that equipment material is in conformity with that listed in the scheme.4.1.2. 不參與清洗的 被隔 離的 儀表 閥 門 等要在清洗前檢查確認 Isolated instruments and valves that are not cleaned should be checked before cleaning 。4.1.3. 測試樣品必須包含兩個新焊的， 未清洗的焊縫。 一個安裝在將要清洗的管路中，另外

11、一個放在化學清洗罐內(nèi) ;.4.2 水沖洗：水沖洗及試壓的目的在除去管線內(nèi)表面積灰、 泥沙、脫落的金屬氧化物及其它疏松污垢， 并在模擬清洗狀態(tài)下對臨時清洗回路進行泄漏檢 查。Rinse with water. Rinse and pressure test aim to remove ashes, mud and shed metallic oxide and other loose dirt on the surface of pipelines and proceed with leak test on temporary cleaning loop under the circumstan

12、ces of cleaning stimulation.用純化水(氯離子小于0.1ppM)進行沖洗，沖洗時控制進出水平衡。沖洗 的同時檢查清洗循環(huán)系統(tǒng)是否有泄漏等情況發(fā)生，如果有，在清洗劑添加前要處理好。Rinse with purified water (chlorine ion is less than 0.1ppM). In rinse process control the balance between incoming and outgoing water and check if circulating system leaks. If so, do it well before

13、 adding cleaning agent.4.3 脫脂：脫脂處理的目的系統(tǒng)內(nèi)表面在制作、安裝、過程中產(chǎn)生的油脂，使 酸洗液能完全，徹底地和系統(tǒng)內(nèi)表面接觸，從而使清洗徹底，鈍化膜完整；Degrease. It aims to degrease the oil produced in the fabrication, installation of inner surface of system to make pickling agent get in full contact with inner surface system. Therefore cleaning can be fini

14、shed fully and passivation membrane is in complete situation.4.3.1. 操作步驟，系統(tǒng)加入純化水(氯離子小于0.1ppM)至預定液位，開始循環(huán)，并加入堿洗藥劑。Procedure. Inject purified water (chlorine ion is less than 0.1ppM) into the system and begin the circulation. And add alkaline cleaning medicament for stainless steel and degreasing finis

15、hes.4.3.2. 工藝條件：Process溫度 temperature常溫 normal temperature循環(huán)時間 circulating time2 小時 hours循環(huán)時間可根據(jù)天氣、管道復雜情況適當延長或縮短。Circulating time can be lengthened or shortened according to the weather and piping.4.3.3. 脫脂藥劑：Degreasing medicament在舁 廳pNo名稱Name1氫氧化鈉宜到其濃度為2%-3%4.3.4. 測試項目：Items to be testedPH1 次/半小時 o

16、nce/half hour脫脂液PH要求維持在12以上，當PH小于12時應添加氫氧化鈉。PH of Degreasing agent to be kept as above 12 and sufficient degreasing agent to be added.PH測試使用PH試紙PH checked with PH test paper4.4 水力沖洗： 水力沖洗的目的是除去脫脂后脫落的污物， 并將系統(tǒng)表面殘留 的脫脂液沖洗干凈。Water rinse to get rid of shed ordure and flush remaining degreasing agent on s

17、ystem surface clean.4.4.1. 操作步驟，排盡系統(tǒng)內(nèi)脫脂液，用大量水沖洗。Operation procedure. Drain degreasing solution in the system and flush the system with enough water.4.4.2. 測試項目，用視覺觀察沖洗水至透明無微粒，測定PH 小于 9。Items to be tested. Check flush water to be transparent with no particulate visually and make sure PH value less th

18、an 9.PH2 次/半小時twice/ half hourPH 測試使用 PH 試紙，當 PH 小于等于 9 時水沖洗完成。PH checked with PH test paper and water flush finished when PH 6,電導率差小于 0.5/cm,即可結(jié)束。After finishing passivation, drain away solution for passivation and flush with purified water (chlorine icon is less than 0.1ppM) to remove remaining pa

19、ssivation solution. When PH is close to the neutralization (pH6), difference of conductivity less than 1 的/cm passivation finishes.4.6.2. 工藝條件 Process condition清洗溫度 cleaning temperature 常溫 normal temperature4.6.3. 測試項目：Items to be testedPH2 次/半小時 twice/half hour2 次/半小時twice/half hour電導率 conductivity

20、PH 測試使用 PH 試紙PH test by PH test paper.使用電導率儀測定電導率Cond tested by cond. Meter.4.7 系統(tǒng)恢復，清洗完成后將系統(tǒng)恢復原樣。System reset. Get the system back after finishing cleaning.4.8 如果系統(tǒng)長時間不投入使用，建議用氮氣封存。If the system is not put into use for a long time, nitrogen is suggested for sealing.5 廢液處理 Waste liquor treatment5.1

21、各清洗過程中的沖洗水，未添加清洗劑，可以直接排放。Flush water without cleaning additive during cleaning can be discharged directly.5.2 酸洗液的廢液， 鈍化液的廢液， 用槽罐車把廢水運輸?shù)綇U水處理廠處理排 放。Waste liquor of pickling solution and greasing solution should be delivering with tank car to waste water treating plant for handling and discharging.6 甲

22、方提供的條件 Condition supplied by the owner甲方負責提供如下公用設施：The following utilities are provided by the owner.6.1 水：全程采用純化水，純化水要求氯離子小于0.1ppM,使用ORION屯化水.Purified water is used through the system and purified water should include less than 0.1ppM chlorine icon. Orion will provide the purified water for chemica

23、l pickled and passivation.6.2 電源(清洗時使用純化水泵)。Power supply. Purified water pump is used when cleaning.6.3 干燥無油的壓縮空氣或氮氣，0.5-1 MPa。Dry compressed air or nitrogen with no oil of 0.5-1 MPa.7 臨時配管 Temporary tubing7.1 臨時配管是指將清洗系統(tǒng)中管道連接起來，形成清洗循環(huán)回路，清洗完成 后需要拆除的管道和設施。Temporary tubing is the piping and facility t

24、hat need be dismantled after cleaning Connect piping in the cleaning system to form circulating loop.7.2 臨時配管用軟塑料管。Temporary tubing adopts soft plastic tube.8 檢驗與驗收Test and accept8.1 鈍化表面目測，鈍化膜完整，顏色一致。Check the surface of passivation visually to make sure that passivation film is complete and has the same color.8.2 在回路的最后一個焊縫采用鐵氟化鉀溶液顯藍測定，變色時間大于 30秒 鐘。On last welding seam, Adopt potassium ferrocyanide for blue indication ameasuring and color changes for more than 30 minutes.(藍點試驗 blue