工业锅炉安装规范

工业锅炉安装规范 工业锅炉安装工程施工及验收规范 条文说明 GB/50273—98 第三节 受压元件焊接 4.3.3 4.3.3根据国家现行标准《蒸气锅炉安全技术规程》的有关 规定 关于下班后关闭电源的规定党章中关于入党时间的规定公务员考核规定下载规定办法文件下载宁波关于闷顶的规定 。其中:制定焊接工艺指导书，并进行焊接工艺评定，是指施焊单位首次采用的焊接钢种、焊接材料和工艺方法，必须先制定焊接工艺指导书，进行焊接工艺试验。试验和焊接工艺经评定合格后，方可正式上炉施焊。施焊的焊工应符合第4.3.3条的规定。 4.3.4锅炉受热面管焊接接头的割样试件，是指在同一施焊的同部件上的对接接头中切取。 4.3.5根据国家现行标准《蒸汽锅炉安全技术规程》的有关规定制定。 4.3.6根据国家现行标准《锅炉管子制造技术条件 》jb1611—83的有关规定制定。 4.3.7根据国家现行标准《锅炉管子制造技术条件》jb1611—83的有关规定指定，并增加了管子公称外径不大于ø60mm 的管子管口端面倾斜度的要求。 4.3.10 4.3.11根据国家现行标准《蒸汽锅炉安全技术监察规程》的有关规定制定。 4.3.12根据国家现行标准《蒸汽锅炉安全技术监察规程》和《热水锅炉安全技术监察规程》的有关规定制定。 the departments focus on Office, actively carry out visits construction problem-solving public policy advocacy, and properly handle various types of petition cases, a total of 289 reception process petition cases and 2132 (times). Attach great importance to safety educationstrengthening the work of letters and calls and security, closer links between the Government and the masses. In order to do the work of letters and calls, and to solve problems for people, our Government Affairs Hall reception of letters and calls into established municipal government reception day system and leadership standing reception of letters and calls system, take advantage of the Government Affairs Hall 工业锅炉安装工程施工及验收规范 GB50273—98 第三节 受压元件焊接 4.3.1.受压元件的焊接应符合国家现行标准《蒸汽锅炉安全技术监察规程》、《热水锅炉安全技术监察规程》、《锅炉受压元件焊接技术条件》和《锅炉受压元件焊接接头机械兴能检验方法》的有关规定。 4.3.2焊接锅炉受压元件之前，应制定焊接工艺指导书，并进行焊接工艺评定，符合要求后方可用于施工。 4.3.3焊接锅炉受压元件的焊工，必须持有锅炉压力容器焊工合格证，且只能在有效期内担任考试范围内的焊接工作。焊工应按焊接工艺指导书或焊接工艺卡施焊。 4.3.4对于锅炉受热面管子，应在同部件上切取0、5%的对接接头做检查试件但不得少于一套试样所需接头数。当现场切取检查试件确有困难时，可用模拟试件代替。 4.3.5锅炉受压元件的焊缝附近应采用低应力的钢印打上焊工的代号。 4.3.6锅炉受热面管子及其本体管道的焊接对口，内壁应平齐，其错口不应大于壁厚的10%，且不应大于1m。 4.3.7焊接管口的端面倾斜度应符合4.3.7的规定。 焊接管口的端面倾斜度(mm) 表4.3.7 管子公称外径 ?60 60—108 108—159 ,159 端面倾斜度 ?0.5 ?0.6 ?1.5 ?2 4.3.8管子由焊接引起的弯折度，应采用直尺检查，在距焊缝中心200mm处的间隙不应大于1mm。 4.3.9管子一端为焊接，另一端为胀接时，应先焊后胀。 4.3.10受压元件的外观质量，应符合下列要求: a. 焊缝高度不应低于母材表面;焊缝与母材应圆滑过渡。 b. 焊缝及其热影响区表面应无裂纹、未熔合、夹渣、弧坑和气孔。 c. 焊缝咬边深度不应大于0.5mm;两侧咬边总长度不应大于管子周长的20%， 且不应大于40mm。 4.3.11射线探伤人员必须持有国家主管部门颁发的《锅炉压力容器无损检测人员资格证书》，且只能在有效期内担任与考试合格的技术等级相应的射线探伤工作。 4.3.12锅炉受热面管子及其本体管道焊缝的射线探伤，应在外观检查合格后进行，并符合下列规定: a. 抽检焊接接头数量为焊接接头总数的2%—5%。 b. 射线探伤应符合现行国家标准《钢熔化焊接接头射线照相和质量分级》的 有关规定，射线照片的质量要求不应低于AB级。 the departments focus on Office, actively carry out visits construction problem-solving public policy advocacy, and properly handle various types of petition cases, a total of 289 reception process petition cases and 2132 (times). Attach great importance to safety educationstrengthening the work of letters and calls and security, closer links between the Government and the masses. In order to do the work of letters and calls, and to solve problems for people, our Government Affairs Hall reception of letters and calls into established municipal government reception day system and leadership standing reception of letters and calls system, take advantage of the Government Affairs Hall c. 对于额定压力等于或大于0.1MPa的蒸汽锅炉和额定出水温度等于或大于 120 ºC的热水锅炉，?级焊缝为合格;对于额定蒸汽压力小于0.1MPa的 蒸汽锅炉和额定出水温度小于120ºC的热水锅炉，?级焊缝为合格。 d. 当射线探伤的结果不合格时，除应对不合格焊缝进行返修外，尚应对该焊 工所焊的同类焊接接头，增做不合格数的双倍复检，当复检仍有不合格时， 应对该焊工焊接的同类焊接接头全部做探伤检查。 e. 焊接接头经射线探伤发现存在不应有的缺陷时，应找出原因，制定可行的 返修方案，方可进行返修，同一位置上的返修不应超过三次，补焊后，补 焊区仍应做外观和射线探伤检查。 4.3.13管子上所有的附属焊接件，均应在水压试验前焊接完毕。 4.3.14管排的排列应整齐，不应影响砌(挂)砖。 the departments focus on Office, actively carry out visits construction problem-solving public policy advocacy, and properly handle various types of petition cases, a total of 289 reception process petition cases and 2132 (times). Attach great importance to safety educationstrengthening the work of letters and calls and security, closer links between the Government and the masses. In order to do the work of letters and calls, and to solve problems for people, our Government Affairs Hall reception of letters and calls into established municipal government reception day system and leadership standing reception of letters and calls system, take advantage of the Government Affairs Hall 电力建设施工焊接作业指导书形式及 内容 财务内部控制制度的内容财务内部控制制度的内容人员招聘与配置的内容项目成本控制的内容消防安全演练内容 1. 工程概况: 1. 1焊接工作量 1. 2 设计 领导形象设计圆作业设计ao工艺污水处理厂设计附属工程施工组织设计清扫机器人结构设计 工况 2. 编制依据: 2.1设计图纸 2.2执行的规程、规范、标准 3. 焊前准备: 3.1焊接人员配备 3.2焊接设备配备 3.3焊接材料准备 4. 施工作业程序: 4.1作业程序图 4.2作业环境 5. 施工作业方案 5.1坡口加工 5.2对口定位焊 5.3焊接方法 5.4工艺参数(焊接速度、焊接电流、焊接层次、焊接顺序、) 5.5施焊要求 5.6焊后检验 6. 焊缝返修 the departments focus on Office, actively carry out visits construction problem-solving public policy advocacy, and properly handle various types of petition cases, a total of 289 reception process petition cases and 2132 (times). Attach great importance to safety educationstrengthening the work of letters and calls and security, closer links between the Government and the masses. In order to do the work of letters and calls, and to solve problems for people, our Government Affairs Hall reception of letters and calls into established municipal government reception day system and leadership standing reception of letters and calls system, take advantage of the Government Affairs Hall 6.1返修方案 6.2返修检验 7. 质量保证措施 7.1质保体系 7.2质量管理 8. 施工人员职责 8.1技术人员职责 8.2焊工职责 9. 安全文明施工 9.1环境因素 9.2风险评价 9.3安全文明施工措施 10. 安全 技术交底 金刚砂技术交底断桥铝门窗监理交底卫生间技术交底喷播草籽技术交底钢结构雨棚安全交底 10.1安全交底记录 10.2技术交底记录 10.3安全交底签字 10.4技术交底签字 the departments focus on Office, actively carry out visits construction problem-solving public policy advocacy, and properly handle various types of petition cases, a total of 289 reception process petition cases and 2132 (times). Attach great importance to safety educationstrengthening the work of letters and calls and security, closer links between the Government and the masses. In order to do the work of letters and calls, and to solve problems for people, our Government Affairs Hall reception of letters and calls into established municipal government reception day system and leadership standing reception of letters and calls system, take advantage of the Government Affairs Hall