GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Name: Industrial Corrosion, Testing, Prevention & Control
Time: 10:30 AM TO 01:00 PM Total Marks: 70
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII(NEW) EXAMINATION - SUMMER 2019
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Subject Code: 2182112 Date:13/05/2019Subject Name: Industrial Corrosion, Testing, Prevention & Control
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| MARKS | |
|---|---|
| Q.1 (a) Discuss the importance of study the corrosion behavior of metals and alloys. | 03 |
| (b) Justify the role of design aspects in corrosion protection. | 04 |
| (c) Corrosion failure occurs in car engine cooling system. Identify the possible causes and suggest remedies. | 07 |
| Q.2 (a) Discuss factors affecting life of exhaust valve of a heavy duty natural gas engine. | 03 |
| (b) Describe Failure modes of exhaust valve of a heavy duty natural gas engine. | 04 |
| (c) Using proper examples discuss microbial induced corrosion (MIC). Discuss different bacteria controlling MIC rate. Suggest suitable remedial measures. | 07 |
| OR | |
| (c) Discuss failure analysis of medium capacity boiler tube used in power plant including causes and remedies. | 07 |
| Q.3 (a) Solution annealing is a tool to prevent IGC: Discuss. | 03 |
| (b) List major forms of corrosion may occur in oil and gas production industries. | 04 |
| (c) Corrosion failure occurs in a 316 SS drain pipe line in a refinery. Identify the Causes and suggest remedies with investigation methodology adopted. | 07 |
| OR | |
| Q.3 (a) Suggest some candidate materials to be used in corrosive environment in petrochemical industries. | 03 |
| (b) Write a note on corrosive environment in petrochemical industries. | 04 |
| (c) Pitting Corrosion Failure occurs in a wet gas pipeline used in petrochemical plant in south Iran. Explain investigation methodology adopted to identify the Causes. Suggest remedies. | 07 |
| Q.4 (a) Suggest suitable corrosion resistant material for hull of boat. | 03 |
| (b) Explain role of ductile brittle transition temperature in corrosion failures. | 04 |
| (c) Corrosion fatigue failure occurs in a marine vessel shaft coupling made by cast Iron and used in ship's propulsion system. Identify the Causes and explain investigation methodology used. Suggest remedies. | 07 |
| OR | |
| Q.4 (a) “Pitting is most dangerous form of corrosion” Discuss. | 03 |
| (b) Suggest preventive measures for corrosion failures in helical compression spring of automobile suspension system. | 04 |
| (c) Selecting proper examples explain how material selection is helpful to combat corrosion in ship building industries. | 07 |
| Q.5 (a) Describe causes of corrosion in automobile battery terminal. | 03 |
| (b) Reformer tube of an Ammonia plant fails. Explain with investigation methodology adopted to Identify the causes and suggest remedies. | 07 |
| OR | |
| (a) Suggest material for heat exchanger tube in a fertilizer plant to protect corrosion damage | 03 |
| (b) From a metallurgical engineer point of view describe the causes of Bhopal gas tragedy. | 04 |
| (c) Failure occurs of a reboiler in the waste water stripping tower of a petrochemical plant. Identify the Causes and suggest remedies. | 07 |
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