dl受监管道焊接作业指导书

1、Good is good, but better carries it.精益求精，善益求善。dl受监管道焊接作业指导书小口径受监管道焊接作业指导书工程技术文件报审表B1-07 (A1监）工程名称双鸭山龙煤天泰煤制芳烃项目-热电厂编号至： 中国成达工程有限公司（监理单位）现报关于 双鸭山龙煤天泰煤化工有限公司热电厂165T/H流化床锅炉受热面管道焊接作业指导书 工程技术文件，请予以审核。序号名称及类别编制人1锅炉受热面焊接作业指导书234审查意见：总承包单位（章）：赛鼎工程有限公司 专业工程师/项目经理： 年 月 日监理工程师意见： 监理工程师（签字）： 年 月 日 总监理工程师审批意见： 监理

2、单位（章）：中国成达工程有限公司 总监理工程师（签字）： 年 月 日双鸭山龙煤天泰煤化工有限责任公司热电厂锅炉安装工程 锅炉受热面管道焊接作业指导书审批：审核:编制:江苏华能建设工程集团有限公司双鸭山龙煤天泰项目部2013年5月6日目 录1适用范围2编制依据3工程概况及主要焊接工程量4作业人员资格要求5主要工具、机具要求6施工准备7焊接施工程序8焊缝返修9质量要求10安全和文明施工措施11技术记录1适用范围本作业指导书适用于双鸭山龙煤天泰煤化工有限公司热电厂锅炉受热面管道焊接施工。2.编制依据21焊工技术考核规程 DL/T679-201222火力发电厂焊接技术规程 DL/T869-201223

3、焊接工艺评定规程 DL/T868-200424江苏华能工程建设集团有限公司焊接工艺评定3工程概况及主要焊接工程量31 工程概况 本锅炉为次高温次高压，单锅筒横置式，单炉膛，自然循环，全悬吊结构，锅炉的给水经过水平布置的两组光管式省煤器加热后经导水管进入锅筒。锅筒内的锅水由集中下降管、分配管进入水冷壁下集箱、水冷壁管、上集箱，然后由引出管进入锅筒。锅筒内设有汽水分离装置。 饱和蒸汽从锅筒顶部的蒸汽连接管引至尾部低过进口集箱，经低温过热器、一级喷水减温器、高温过热器、吊挂管、集汽集箱，最后将合格的过热蒸汽引出。32 主要焊接工程量序号项目名称材质规格焊口数量备注1省煤器20G32×355

4、22低温过热器20G38×3.54863高温过热器12Cr1MoVG42×41744前水冷壁20G51×54255后水冷壁20G51×54256左水冷壁20G51×51927右水冷壁20G51×51928水冷屏20G51×53429集中下降管377×1420G1010集中下降管219×820G64作业人员资格要求41焊工应按国家劳动人事部颁发的锅炉压力容器焊工考试规则或国家经贸委颁发的焊工技术考核规程，经考试合格取得相应项目的焊工合格证，并在有效期范围内。42施工人员在施工前必须进行安全交底。43焊工应有

5、良好的工艺作风，严格按照给定的焊接工艺进行施焊，并认真实行质量自检，及时填写自检单交焊接质检员复验。44焊工在施焊前须经技术人员交底，熟悉作业指导书及图纸对焊缝的质量要求。焊接前必须进行焊前模拟练习以熟悉焊接材料性能和操作技能，并经外观及断面检查合格后，方可正式施焊。45技术人员应负责焊接全过程的技术交底、技术指导，同时协助班组长和质检员对焊接全过程进行跟踪监督、检验和验收评定工作。46焊接外观质量检验人员应持有效的焊接质检员证书。负责焊接工作的检查、监督和验收评定工作。5主要工具、机具要求51焊机必须运行完好、且性能可靠。52焊工所用的焊条保温筒、砂轮机、凿子、小锤、钢丝刷、工具袋等配备齐全

6、。53焊条烘箱必须运行完好、且性能可靠。54施工主要机具、工具、材料名 称单位数量逆变焊机台16焊条烘箱台1氩弧焊枪把10电焊钳把10氩气流量计只12电焊面罩只12焊条保温筒只16凿子把1水平管米30角向磨光机只16焊接电缆米500氩气瓶15高压焊工名66施工准备61材料要求611焊材必须具有质量证明书或材质合格证。当对焊材质量有疑义时应进行抽样复查，并出具复查合格的报告后方可使用。612施工现场应配有符合要求的二级焊材发放库，配置焊条烘烤箱、恒温箱。并由专人负责，严格执行有关规定，做好原始资料与日常记录的管理工作。613焊材的保管、烘燥、发放、回收应严格按公司“焊接材料管理办法”的有关规定执

7、行。614焊条的烘燥工艺应按生产厂家说明书提供的参数进行，否则不允许发放使用。615焊丝使用前应用砂纸彻底清除表面铁锈、油、污等杂物。616钨极应用铈钨棒，钨极一端应打磨成园锥型。617氩弧焊所用的氩气纯度不低于99.95，且含水量不大于50ml/m3。焊接前应试验氩气纯度和流量，如有问题要及时上报处理。62环境条件621环境条件应符合下列要求:a风速:手工电弧焊小于8m/s（风力5级），氩弧焊小于2m/s（风力2级）。b相对湿度小于90，环境温度：碳素钢应大于20、低合金钢及普通低合金钢应大于10、中、高合金钢应大于0。c非下雨、下雪天气。622当环境条件不符合上述要求时，必须采取挡风、防雨

8、等有效防护措施。623壁厚6mm的低合金钢管子及壁厚15mm碳素钢管在负温下焊接时亦应适当预热。63焊接方法锅炉受热面受监管道，管径DN100的焊接采用GTAW/SMAW(氩弧焊打底，手工焊盖面) 管径DN100的焊接采用GTAW(双氩)的焊接方法。7焊接施工程序:见图对 口 *预 热 点 焊 *预 热 返修 焊 接 自 检 *后 热 *热 处 理 外观检查 无损检测 不合格验收技术记录注：*当有要求时 *当必要时71对口要求711坡口形式应按设计图纸的要求或符合规程规定的要求。712 组对时质量要求内壁齐平，其错口量不超过管壁厚度的10，且不大于1mm。713对接管口端面应与管子中心线垂直，

9、其偏斜度f不得超过0.5mm。714组对前应打磨坡口及两侧,彻底清除坡口内外各1015mm范围内油污、铁锈等，直至露出金属光泽，并对坡口表面进行检查，不得有裂纹、夹层等缺陷715焊口的局部间隙过大时,应设法修整到规定尺寸,严禁在间隙内加填塞物。716焊接前焊工应对焊口的对口质量进行检查，符合要求后方可进行焊接，否则有权拒绝焊接。72焊接材料选用721焊接材料的选用应对照安装专业提供管材的光谱分析报告，按与母材化学成份相同或相近的原则进行。722异种钢焊口的焊接材料应按焊接工艺评定的要求或规程规定的焊接材料进行选用。723焊接时选用的焊接材料：母材材质焊丝焊条20GTiG-J50 2.5J506

10、 3.212Cr1MoVGTIG-R31 2.5热317 3.273点固焊731排管点固焊时应先点间隙小的焊口，后点间隙大的焊口。732严禁在被焊工件表面引弧、试验电流或随意焊接临时支撑物。733点焊工艺与正式焊接工艺相同，并由同一焊工施焊。74焊接要点741除焊接工艺有特殊要求，每个焊口必须一次连续焊接完成。742当因故中断焊接时应立即对焊口采取保温、缓冷等措施，重新焊接时应仔细检查焊缝有无缺陷并按原焊接工艺要求进行743焊接过程中应控制焊接线能量， 防止线能量过大。在整个焊口焊接中,并且尽量采用相同的焊接规范，保持同步、同时焊接、同时停止。744焊接完成后，应及时清理焊缝表面，进行焊缝外观

11、检查，自检合格后及时填写焊口自检单。745焊条筒内不可存放不同牌号的焊条，焊条在保温筒存放的时间不得超过4小时。746禁止在非焊接部位引弧及电弧擦伤管材表面。747打底焊要控制好电弧，运弧及送丝要均匀，氩弧焊打底焊应确保根部熔透和坡口边缘熔合良好，打底层厚度不小于3mm。748打底焊结束应及时进行加厚层焊接，第一层电焊应选用2.5mm焊条小电流施焊，以防烧穿。运条到坡口边缘应充分熔合，防止出现死角，熔渣应清理干净。749应确保起弧与收弧的质量，收弧应将弧坑填满。层间焊接接头应错开，层间清渣要彻底，发现缺陷及时处理。7412管道氩弧焊接时严禁两名焊工共用一把氩弧焊抢。8焊缝返修81焊接接头内部有

12、超标缺陷时，可采用挖补方式进行返修，但焊缝同一部位返修次数不得超过三次，合金钢焊口不宜超过两次。82焊缝返修应由相应合格项目的持证合格焊工担任。83返修前应分析缺陷性质、缺陷的长度和宽度，确认缺陷的部位。84返修前应彻底清除缺陷，坡口应尽量规则，避免坡口底部有尖角、轮廓突变及毛刺等。85返修的焊接工艺应与正式焊接工艺相同，返修时预热应取预热温度的上限，加热范围也应适当扩大。86需进行热处理的焊接接头，返修后应重做热处理，热处理结束后，焊补区表面须经修整打磨，使其外形与原焊缝基本一致。87返修完毕，按不低于原焊缝质量标准对补焊区进行检验，发现有不允许缺陷时，应重新挖补返修。88凡是不能用局部补焊

13、法修复的缺陷，可割除该焊口，重新加工坡口对口焊接。9质量要求91焊口的质量要求应严格按照三级验收制度进行检查验收。92 焊 缝 余 高平 焊0-2mm其它位置3mm焊缝余高差2mm焊缝宽窄差3mm咬 边h0.5,10.1L ,且40mm错 口外壁0.1，且4弯 折D100D1001/1003/20010安全和文明施工措施101电焊机要做好设备的例行保养和安全检查。焊机外壳接地应良好，移动电源或检查线路时须切断电源。焊接电缆有破损的地方应及时用绝缘胶布包好。102焊接工作必须遵守安全、防火等规程的有关规定，所有作业人员应遵守各项安全操作规程。103进入施工现场必须戴好安全帽，高空作业系牢安全带，

14、作业人员穿专用工作服、戴专用手套。104焊前应检查并确保工作点下方及四周5M范围没有易燃易爆物品，工作完毕后必须切断电源、气源，检查现场，确认无起火危险方可离开。105高空作业应备好工具包，施工所用工具尽可能置于其中，不准乱掷焊条头等杂物。106使用角向磨光机、风动返修钻等工具返修焊口时，应佩戴防护眼镜，电动工具要性能良好、安全可靠。107夜间作业须有充足照明，遇到六级或以上大风、大雨、大雪应停止露天高空作业。108焊接电缆和热处理电缆线走向应有条理，作业完成后，及时清理现场焊条头、保温材料等杂物，做到“工完、料尽、场地清”。11技术记录111焊口焊工自检记录。112焊口验评记录。113焊接记

15、录及焊口布置图。114焊口无损检测报告。111. objective to help companies understand and learn and its activities related to work safety laws and regulations, standards and other requirements, and will communicate this information to practitioners and stakeholders, and enhance their awareness of the law, standard safety

16、 behavior. 2. scope of application on the company's acquisition, identification, updating the law, regulations and other requirements and establishment pedestal debt. 3. responsibilities 3.1 biotech Department 3.1.1 security laws and regulations, standards and other requirements to collect, iden

17、tify and update account and establish and supervise the implementation. 3.1.2 is responsible for the Organization of related departments and units to identify laws, regulations, and other requirements for conformity assessment. 3.1.3 in the two workshops promote laws, regulations and other requireme

18、nts. 3.1.4 is responsible for company's safety rules and regulations. 3.1.5 release 3.2 for legal regulations and safety procedures of each workshop, sections 3.2.1 access to laws, regulations and other requirements, should be passed to the production technology section. 3.2.2 is responsible for

19、 the related laws, regulations, standards and other requirements communicated to employees, and comply with them. 3.2.3 safety regulations of the responsible units. 3.2.4 be responsible for safe operation of the unit door. 4. access to procedures 4.1 4.1.1 technology through standardization of healt

20、h information networks, media, industry associations, government departments and other queries for the nation's security laws and regulations, standards and other requirements. 4.1.2 production technology section to collect the higher authorities of the relevant safety notification, bulletins, e

21、tc. 4.1.3 units, departments, from the professional or the local newspapers, magazines and other copies of the laws, regulations and other requirements, should be submitted to identify and confirm and record production technology section. Registration and identification 4.2.1 4.2 according to the co

22、mpany, activities and services as all of the dangerous and harmful factors, combined with the latest content and versions of the laws and regulations, identify the applicable laws, regulations, standards and other requirements. 4.2.2 according to the characteristics of the industry, and identify the

23、 applicable laws, regulations, standards and other requirements.4.2.3 technology organize relevant departments to obtain and identify laws, regulations, standards and other requirements to organize evaluation confirmed, reported to the leaders for approval, and the preparation of the list of applica

24、ble laws and regulations. Update 4.3 4.3.1 when existing laws, regulations, standards and other requirements is updated, it should identify in a timely manner. 4.3.2 Technology Office once a year the laws, regulations, standards and other requirements of acquisition, identification, updating work. 4

25、.3.3 when danger and harmful factors in production process changes, should be re-recognition of the laws,Constitution provides that no party member can do, leading cadres should take the lead in not doing. In strict accordance with the party Constitution Party member leading cadre must have six basi

26、c conditions and improve their own qualities and abilities, regular checks and pay for their own shortcomings. Especially in the ideal and belief, persist in seeking truth from facts, and promote the scientific development, maintain close ties with, strengthening moral cultivation, and strict adhere

27、nce to party discipline for party members to lead by example. Second, the main change in the new Constitution and the interpretation of the 18th National Congress of the Chinese Communist Party, to end on November 14, 2012 General Assembly vote, the Constitution of the Communist Party of China (Amen

28、dment) Act. 18 Congress of the partyBy the Constitution of the Communist Party of China (Amendment) Act, against 17 in six large through a revision of the party Constitution. In order to comply with the development of the situation and tasks change, every national Congress of our party will be of va

29、rying degrees of revision of the Constitution. A big party was held in 1921, due to time constraints, and developed a platform of one of the large, just a programmatic document. Our first Constitution was established by the party's second National Congress. According to the changes in the situat

30、ion and tasks, after two successive congresses (except for five) different degrees of modification to the Constitution. Because of the special circumstances, the five party Constitution has not been modified, by the Politburo after changes to the Constitution. Current is developed in September 1982

31、the party's 12 big changes to the party Constitution. 30 years, on the premise of maintaining the stability of the basic contents of the party Constitution, 13 and 14 and Congress of the party, 16 and 17 are with varying degrees of modification of the Constitution. Constitution modified of history, is we party 92 great development course of miniature and show, a is show has we party tightly relies on people co