中英文朗读30662.docVIP

(2)除环向、纵向对接焊缝和螺旋缝焊缝以外的焊缝应进行100%渗透检测或100%磁粉检测。 (2) in addition to the ring to the longitudinal butt weld, and outside of the spiral seam weld seam should be 100% 100% penetrant or magnetic particle testing. 1．承受内压钢管及有色金属管试验压力应为设计压力的1.15倍，真空管道的试验压力 1. Under internal pressure steel pipe and nonferrous metal pipe test pressure shall be 1.15 times of design pressure, vacuum pipe test pressure 应为0.2MPa。 Should be 0.2 MPa. 2．试验时应装有压力泄放装置，其设定压力不得高于试验压力1.1倍。 2. The test should be equipped with pressure relief devices, the set pressure shall not be 1.1 times higher than the test pressure. 3．试验前，应用空气进行预试验，试验压力宜为0.2MPa。 3. Before the test, the application of air test, the appropriate test pressure of 0.2 MPa. 4．试验时，应逐步缓慢增加压力，当压力升至试验压力的50%时，如未发现异常或泄漏 4. Test, it shall gradually increase the pressure, when pressure rose to 50% of the test pressure, such as no abnormalities are found or leakage 现象，继续按试验压力的10%逐级升压，每级稳压3min，直至试验压力。应在试验压力下稳 Phenomenon, according to 10% of the test pressure booster, step by step per voltage level 3 min, until the test pressure. Should be under the pressure test 压l0min，再将压力降至设计压力，以发泡剂检验不泄漏为合格。 Pressure l0min, then pressure drop to design, qualified for foaming agent inspection does not leak. （六）管道泄漏性试验的实施要点 (6) the implementation of the pipeline leak test points 泄漏性试验是以气体为试验介质。实施要点如下： Leak test is based on the gas test medium. Implement key points are as follows: 1．输送极度和高度危害介质以及可燃介质的管道，必须进行泄漏性试验。 1. Transportation extremely and highly harmful medium and combustible medium pipeline, leak test must be conducted. 2．泄漏性试验应在压力试验合格后进行，试验介质宜采用空气。 2. The leak test should be performed after the pressure test, the test medium appropriate USES air. 3．泄漏性试验压力为设计压力。 3. The leakage test pressure for the design pressure. 六、长输管道焊缝的检验与验收 Six, long-distance pipeline weld inspection and acceptance (2)无损检测的射线检测及超声检测的合格等级均为Ⅱ级。 (2) nondestructive testing of radiographic testing and ultrasonic testing are Ⅱ level of qualified level. 穿、跨越水域、公路、铁路的管道焊缝，弯头与直管段焊缝及