QP-08- 压力试验程序.doc

Shanghai Baoye Group Corp., Ltd 上海宝冶集团有限公司Pressure Testing ProcedureSBC-JZGS/ASME-08Shanghai Baoye Group Corp., Ltd Procedure Document上海宝冶集团有限公司程序文件Document Name：Pressure Testing Procedure文件名称：压力试验程序Document No：文件编号：SBC-JZGS/ASME-080Issue for Use2014.05.16王学珍李昆Revision No.版本号Reason for issue/Revision发布/修改原因Issue Date编制日期Issued by编制者Approved by审核者1. Scope 范围1.1This procedure describes the control of operation and inspection for Code items which are constructed in according to ASME Section I/ B31.1 and VIII Div.1. 本程序规定了根据ASME第卷、B31.1和第卷第分册制造的法规产品的压力试验的操作与检测控制程序。1.2This procedure is supplementary requirement to the QC Manual. 本程序是质量控制手册的补充要求。2Preparation before Pressure Testing 压力试验的准备工作2.1Hydrostatic pressure test shall be carried out after all fabrication works has been finished. QC Engineer shall verify that all required fabrication, examination, inspection and test activities have been completed on Code items, especially those inspection points established by AI have been properly closed. All Nonconformity Reports have been completely closed if existed.在所有制造工作完成之后，容器应进行水压试验。质控工程师应核实所有要求的制造、检验、检测和试验过程都已经完成，特别是那些由AI确立并已经合理关闭的检验点。如果存在不一致报告，这些报告必须都已经关闭。2.2 Before hydrostatic pressure testing, QC Engineer shall carry out visual inspections both internally and externally with Examiner on the Code items. If such inspection is requested by AI, AIs visual inspection, dimensional check shall be carried out prior to the pressure test and the result shall be acceptable.水压试验之前，质控工程师和检验员应对规范产品的内外进行目视检测。如果AI要求检验，AI的目视检测和尺寸检测应在压力试验和试验结论认可之前进行。2.3 The being pressure tested Code item shall be clean and free from any oil, grease, paint and other dirties. The outside surface of the Code item shall be kept dry and clean during the period of pressure test. The testing equipment shall be examined to that it is tight and that all low-pressure filling lines and other appurtenances that shall not be subjected to the test pressure have been disconnected.进行压力试验的规范产品应进行清理，除去油类、脂类、油漆和其它脏物。压力试验过程中，规范产品的外表面应保持干燥和整洁。应对测试设备进行检测，确保它不漏水，所有低压填充线和其它附件不承受实验压力。3Hydrostatic Pressure Test 水压试验3.1Hydrostatic Pressure Test for Pressure Vessel压力容器的水压试验 For internal pressurized vessels, hydrostatic pressure tests shall be applied by raising the pressure gradually to the maximum allowable working pressure (MAWP) as shown on the manufacturers data report to be stamped on the pressure vessel and hold for a few minutes in order to verify whether there is leakage. Then the pressure shall be raised to the testing pressure which at every point in the vessel is at least equal to 1.3 times the MAWP to be marked on the vessel multiplied by the lowest ratio of the stress value S at the test temperature on the vessel to the stress value S at the design temperature. All loading that may exist during pressure test shall be considered. The testing pressure shall be indicated on the drawings. 对内压容器，压力试验应逐渐提升压力至制造商数据报告中所写的标在铭牌上的最大许用工作压力（MAWP），并保持该压力几分钟以确认是否泄漏然后，将压力升至试验压力，也就是容器上每一点的压力都至少为最大工作压力的1.3倍再乘以容器试验温度下的应力值与设计温度下应力值的最小比值。所有在压力试验过程中可能存在的载荷都应被考虑在内。图纸上应标明试验压力。 Metal temperature during hydrostatic pressure test is recommended to maintain at least 30F(17 C) above the minimum design metal temperature (MDMT) but need not exceed 120F (48C), to minimize the risk of brittle fracture for pressure vessel.为减小压力容器脆性断裂的危险，建议水压试验过程中，金属温度应保持在在最小设计金属温度(MDMT)以上30F(17 C)，但无需超过120F (48C)。3.2 Hydrostatic Pressure Test for Boiler and Power Piping锅炉和动力管道的水压试验The hydrostatic testing of the completed boiler unit and power piping shall be subjected to pressure tests using water at not less than ambient temperature, but in no case less than 70F (20 C). The hydrostatic tests shall be applied by raising the pressure gradually to not less than 1.5 times the MAWP as shown on the data report to be stamped on the boiler and power piping. After holding for 30 minutes, the testing pressure may then be reduced to the MAWP, if applicable, and this pressure shall be maintained to inspect carefully on the pressure parts and connections for leakage. The metal temperature shall not exceed 120F (50 C) during the close examination.已完工锅炉和动力管道部件的水压试验应用不低于环境温度的水进行压力试验，且水温不能低于70 F(20C)。水压试验应逐渐升压至数据报告所写的标于铭牌上的最大许用工作压力（MAWP）的1.5倍。保持该压力30分钟后，试验压力可以降低至最大许用工作压力（MAWP），保持适当时间，对受压部件和连接处进行仔细检查是否泄漏。检查过程中金属温度不能超过120 F ( 50 C )。 3.3 Water used for hydrostatic pressure testing shall be clean and deaerated. Potable water is recommended to be used with the chloride content less than 250 PPM.用于水压试验的水应清洁和脱气。建议使用氯含量小于250PPM的饮用水。3.4 An indicating pressure gauge, visible to operator controlling the pressure applied, shall be connected directly to top of the pressure part. If it is impossible to connect the pressure gauge to the top of pressure part, the hydrostatic head on the gage shall be considered. If the indicating gage is not readily visible to the operator controlling the pressure applied, an additional indicating gage shall be provided where it will be visible to the operator throughout the during of the test.应在控制施加压力的操作人员可观察到的位置装设一个与受压件相连接的指示式压力表。如果压力表不能直接安装在受压部件的最顶部，压力表的静压头应考虑到在锅炉顶部达到所需的的试验压力。试压过程中，如果指示压力表不易被控制压力的操作人员方便的观察到，应另安装一只指示压力表在方便操作人员看到的位置。3.5 Dial pressure gages used in testing shall preferably have dials graduated over a range of about double the intended maximum test pressure, but in no case shall the range be less than 1.5 nor more than 4 times that pressure. The spacing between graduations shall be such that the inspector and the operator controlling the test shall be able to determine when the required test pressure has been applied. Digital pressure gages having a wider range of pressure readings may be used provided the readings give the same or greater degree of accuracy as obtained with dial pressure gages. All pressure gages used for hydrostatic pressure test shall be duly calibrated.用于试验工作的表盘指示压力表，其表盘压力范围约为最大试验压力值的2倍，但不小于1.5倍或大于4倍。刻度的距离应使控制试验的检验员和操作者能够决定要求的试验压力是否已经达到。压力范围较大的数字压力表只要其精度等级与表盘压力表相同或更精确则可采用。所有用于水压试验的压力表应准确的校正。4Inspection by Authorized Inspector AI检验4.1Inspection “Hold Point” shall be established on the Process Check List (PCL). Before pressure test, the vessel condition shall be inspected by the AI. AI shall witness the whole stage of hydrostatic pressure test and the result shall be accepted by AI. 工序检查单上确定AI检验“停止点”。在水压试验之前，AI应检查容器条件。AI应亲眼见证水压试验的整个过程，并确认试验结果。4.2 If during the pressure test is exceeded either intentionally or accidentally, and that the visible permanent d