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

2、臨時配管 Temporary tubing 1.08 檢驗與驗收 Test and accept 1.0安全 1.1.1 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 disinfected. Only

3、 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管線的材質為全部為316L

4、,如有其它材質，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TANK接口前級的循環(huán)管道；Pipes from Orion to water tank and pipes of water tank returning to the fron

5、t tank.2.2 純水循環(huán)管道；PW loop distribution Pipes.3 清洗工藝 Cleaning process3.1 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.3.2 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,卡屯

6、化 passivation水沖洗 rinse by water系統(tǒng)恢復 system reset3.3 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,

7、 HX （including plate type and tube/shell）that arenot 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.3.4 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 compon

8、ents did not involved 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.3.5 清洗流程 Cleaning process3.5.1. 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 conn

9、ected by temporary piping to form circulation system. Circulating cleaning is used and one loop was formed when proceeding with cleaning.3.5.2. 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，設備材質和方案中所列要一致。 Pipelines s

10、hould be inspected in 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

11、洗的焊縫。 一個安裝在將要 清洗的管路中，另外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

12、loop under the circumstances of cleaning stimulation.用純化水(氯離子小于O.IppM )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 O.1ppM). In rinse process control the balance between incoming and outgoing water and check if circulating system leak

13、s. If so, do it well before 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，卡屯化膜完整；Degrease. It aims to degrease the oil produced in the fabrication, in stallati on of inner surface of system to make pickli ng age nt get in full con tact with inner surface system

14、. Therefore clea ning can be fini 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 (chlori ne ion is less tha n 0.1ppM) in to the system and beg in the circulati on. And add alkali ne clea ning medicame n

15、t for sta ini ess steel and degreas ing fini shes.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。Circulati ng time can be len gthe ned or shorte ned accord ing to the weather and pip ing.4.3.3. 脫脂藥劑：Degreasing medicament序號No名稱Name1氫氧化鈉直到其

16、濃度為2%-3%4.3.4. 測試項目：Items to be testedPH1 次/半小時 once/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 Degreas ing age nt to be kept as above 12 and sufficie nt degreas ing age nt 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

17、 shed ordure and flush remaining degreasing agent on system 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.442.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 pa

18、rticulate visually and make sure PH value less than 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 <9.4.5 酸洗：酸洗的目的是利用酸洗液將金屬表面的鐵銹氧化物等污垢進行化學 和電化學反應，生成可溶性物質，并利用酸洗液的沖刷作用除去污垢。Pickling. Pickling aims to make dirt like rusted o

19、xide on the surface of metal proceed with chemical and electromechanical reaction to produce dissoluble material and get rid of dirt with pickling solution.4.5.1. 操作步驟，排凈系統(tǒng)水沖洗殘液后，隨即系統(tǒng)加水至一定液位循環(huán)， 加入不銹鋼專用酸洗劑，隨后補充水至控制液位。清洗過程中定期排 污排空。Operation procedure. After remaining rinse solution is drained away, in

20、ject a certain amount of water into the system to a certain level for circulation. Add special pickling medicament for stainless steel into it. Then inject a certain water to control level. Blow down the waste periodically during cleaning.常溫 normal temperature4.5.2. 工藝條件： Process situation清洗溫度 clean

21、ing temperature循環(huán)時間 circulating time2 小時 hours4.5.3. 酸洗鈍化藥劑：序號No名稱Name1檸檬酸，保證濃度在10%15%4.54 測試項目：Items to be testpH 值 PH value1 次/半小時 twice/half hour酸洗液PH要求小于等于1，當PH大于1時應添加檸檬酸，保證濃度在10%15%。Picked chemical PH less tha n 1 and picked chemical to be added in casePH is higher than 1.PH測試使用PH試紙PH checked w

22、ith PH test paper4.6水沖洗：鈍化完成后的水沖洗是為了把殘留的鈍化液除去。Water rinse. Water rinse after finishing passivation is to get rid of remai ning passivati on soluti on.4.6.1 .鈍化結束后，排盡鈍化液洗液，用純化水(氯離子小于0.1ppM)進行沖洗，除去殘留的鈍化液，當PH直接近中性Ph>6,電導率差小于 0.5/cm，即可結束。After finishing passivation, drain away solution for passivatio

23、n and flush with purified water (chlorine icon is less than 0.1ppM) to remove remaining passivation solution. When PH is close to the neutralization (pH>6), differe nee of con ductivity less tha n1 Q/cm passivati on fini shes.4.6.2. 工藝條件 Process condition清洗溫度 cleaning temperature常溫 normal tempera

24、ture4.6.3. 測試項目：Items to be tested電導率 conductivity2 次/半小時 twice/half hourPH 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 lon

25、g time, nitrogen is suggested for sealing.5 廢液處理 Waste liquor treatment5.1 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 w

26、ith tank car to waste water treating plant for handling and discharging.6 甲方提供的條件 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O.IppM,使用ORION純化水.Purified water is used through the system and purified water should in elude less

27、tha n O.IppM chlori ne icon. Orion will provide the purified water for chemical pickled and passivati on.6.2 電源(清洗時使用純化水泵)。Power supply. Purified water pump is used whe n clea ning.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

28、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 that 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 tubi ng 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 passivatio n visually to make sure that passivatio n film is complete and has the same color.8.2在回路的最后一個焊縫采用鐵氰化鉀溶液顯藍測定，變色時間大于 30秒 鐘。On last