Learning situation 7

1. Learning situation 7 A Busy Day in the Workshop

2. Learning Situation 7 • 插入flash动画L7-1

3. Learning Situation 7

4. Pre-class Task Task One Routine Check Task Two Company Profile Task Three Installation and Test 1 2 3 4 Learning Situation 7

5. Task Three Installation and Testing Task Three Task Description Learning Objective Sub-task one 1. Get to know some information related to installation and testing. 2. Acquire some useful expressions of installation and testing when role playing. Design and conduct role-playing activities based on the following passage. Sub-task two 1. Master the common vocabulary and expression. 2. Practice listening skills. Do the listening exercises.

6. I. Fill in the blanks according to the Chinese version provided. A: _________________________________? (您有焊工合格证吗?) B: Yes, I have obtained a certificate of versatile position welding. A: ______________________________________________? (管道焊缝有何要求?) B: We must have the records of all the welded seams and the 10% roentgenoscopic selective examination. A: This welded seam is found an obvious air hole and an unqualified undercut with macroscopic check. _________________.(不合格.) B: We’ll return it to repair at once. Do you have a welder’s certificate What requirements are there for pipeline welded seams It is unqualified.

7. I. Fill in the blanks according to the Chinese version provided. systematic search for equipment and operating procedures specify check identify evaluate

8. I. Fill in the blanks according to the Chinese version provided. A: _________________________________? Do you have a welder’s certificate? (您有焊工合格证吗?) B: Yes, I have obtained a certificate of versatile position welding.是的,我已经取得了全位置焊接合格证. A: __________________________________________________? What requirements are there for pipeline welded seams? 管道焊缝有何要求? B: We must have the records of all the welded seams and the 10% roentgenoscopic selective examination. 所有焊缝都要有记录,并且要有10%的X射线的抽查. A: This welded seam is found an obvious air hole and an unqualified undercut with macroscopic check.这个焊口以宏观检查发现明显的气孔和超长的咬边. _________________. It is unqualified.不合格. B: We’ll return it to repair at once.马上返修. A: Here is missing-welding, isn’t it? 此处是漏焊吧! B: No. The requirement in the drawing is gap (discontinuous) welding.不是.图纸上的要求是间断焊. A: The pass of stainless steel needs machine-washing and pickling.不锈钢的焊道要进行机械清洗和酸洗. B: _________________________________. Yes, we are preparing to do that.是的,我们正做准备. A: ____________________________________? What inspection items are needed? 要做哪些项目的检查呢? B: Pull test, winding test and hardness test are needed.要做拉力、弯曲和硬度试验. systematic search for equipment and operating procedures specify check identify evaluate

9. I. Fill in the blanks without referring to the passage. • 4. In order to solve any pump problem, we need to notice the symptoms carefully so as to ________________________________. • 5. Normally, pump problems can be classified into ____________, ___________________, ___________________________. • 6. Suction related problems are usually caused by ___________ that is due to a variety of reasons. systematic search for equipment and operating procedures specify check identify evaluate

10. I. Fill in the blanks without referring to the passage. 4. In order to solve any pump problem, we need to notice the symptoms carefully so as to ________________________________. 5. Normally, pump problems can be classified into ____________, ___________________, ___________________________. 6. Suction related problems are usually caused by ___________ that is due to a variety of reasons. determine the most likely causes Suction Related System Related or Mechanical Related air lock

11. II. Decide whether the following statements are T (true) or F (false) according to the passage. F 1. Troubleshooting doesn’t requires identification of the malfunctions or symptoms within a system. ( ) 2. It is unnecessary to evaluate all equipment and operating procedures from time to time by means of troubleshooting. ( ) 3. Problem-cause-solution table provides with a list of problems that might occur, along with the possible cause and remedy. ( ) 4. Pumps or other machinery will give no signs when they are not working properly. ( ) 5. Most of the system related problems occur because of air lock. ( ) F T F F

12. III. Translate the following passage into Chinese. If you are a beginner, you can start the troubleshooting from the very first steps. More experienced users may want to start from the later stages in the symptom list. The symptoms have been arranged as: 1. No Flow, No Pressure - No water delivered at all. 2. Low Flow and Low Pressure - Pump does not deliver sufficient water or Pump does not deliver water after some time or insufficient pressure developed. 3. Short Lifespan of Shaft Seal or Packing - Shaft seal or Gland Packing does not last long. 4. Short Lifespan of Bearings, Noisy Operation - Bearings do not last long or vibration and noisy operation or overheating of parts or seizure of bearings. 5. Pump Trips - Pump stops by itself or Excessive power consumption. With this easy pump troubleshooter, anyone could easily pinpoint the causes in a very short time.

13. III. Translate the following passage into Chinese. 如果你是一名初学者,你可以从故障排除最初的几步开始。对于更有经验的使用者来说，可能要先从故障列表上后几个阶段开始。故障症状如下： 1 无流量,无压力,没有水的流动。 2 低流量、低压力-经过一段时间，泵不提供充足的水或泵的压力不足。 3 轴密封或包装的使用寿命短-轴封包装或密封填料不会持续很长时间。 4 短寿命轴承运行噪声-轴承不会持续很久或振动,运行噪声或过热零件或夺取的轴承。 5泵停止运行——自行或过度的功率消耗。 任何人都可以很容易地找出原因在很短的时间。