NDTE 1301 FILM INTERPRETATIONS of WELDMENTS CIP

Transcription

1 NDTE 1301 FILM INTERPRETATIONS of WELDMENTS CIP Course Description A study of radiographic film, including exploration of radiographic basics, interpretation, and causes and effects of discontinuities. (3 SCH, 2 lecture, 2 lab) 2. Prerequisites None 3. Course Goals Each student will correctly answer a minimum of 70% of the written questions on the major quizzes, midterm exam and the final examination. The questions on the written examination and quizzes will be taken from the follow: 1. Reading assignments from the classroom text 2. Notes from class lectures 3. Home work assignments 4. Instructor s classroom demonstrations Each student will be able to demonstrate the following: 1. Set up a radiographic exposure technique on a test sample in accordance with inspection procedures 2. Be able to record examination data in accordance to the same procedure 3. Be able to locate at least 90% of the known discontinuities in test samples with known defects Each student will demonstrate a satisfactory hands on practical demonstration of either x-ray or gamma ray equipment. This practical will be conducted in accordance to the recommended quidelines of the American Society for Non-Destructive Testing. A minimum of 80% of the written and practical questions will be answered correctly. 4. Instructor Information SYLLABUS PREPARED BY: James R. Bailey DATE: August, 2011 INSTRUCTOR RECOMMENDED BY: DATE: DIVISION CHAIRMAN APPROVED BY: DATE: DEAN. For Distance Education: provide contact for technical help such as the IT Helpdesk, or helpdesk@brazosport.edu, for students who have difficulty logging in the first time or have other technical issues such as browser problems. Consider Virtual Office Hours so your students know when you will be online and be able to reach you, either through or chat.

2 5. Textbook or Course Material Information A. Introduction to Radiography a. History of radiographic testing b. Advantages and limitations of radiography examination c. Comparing other non-destructive testing methods to radiography testing d. ASNT inspectors certification guidelines B. Origin of Penetrating Radiation a. Nature of penetrating radiation in the following areas: 1. X-ray 2. Gamma ray b. Interaction between penetrating radiation and matter c. Physics of radiation detection devices d. Glossary of radiography terms and units of measure C. X-ray equipment and Generation of X-rays a. X-ray system (electrical diagram) b. Electron sources 1. Cathode 2. Beam focusing 3. Field emission c. Accelerating potential 1. coils 2. Rectifiers 3. Transformers 4. Electrostatics d. Anode 1. Target material 2. Tube configuration 3. Heat dispensation e. Brehmsstrahlung s theory as it applies to the generation of x-rays f. Equipment design considerations 1. Generating wave shape 2. Window design 3. Duty cycle 4. Tube shielding 5. Equipment type: a. Fixed b. Mobile c. Other D. Gamma Ray Sources and Equipment a. Gamma sources 1. Types

3 2. Spectra chart 3. Activity a. Curie strength b. Specific activity 4. Handling b. Particulate radiation as to: 1. Electron bar 2. Neutron fission 3. Alpha 4. Beta 5. Other c. Major quiz over A, B, C, and D E. Radiographic Film Processing and the Radiograph as a Recorder a. Film processing 1. Darkroom procedures 2. Darkroom equipment and chemicals 3. Film processing do s and don ts b. Causes and correction of unsatisfactory radiographs 1. High film density 2. Insufficient film density 3. High contrast (wave length relationship) 4. Low contrast (wave length relationship) 5. Poor definition 6. Fog 7. Light leaks 8. Artifacts c. Types of radiographic film 1. Speed 2. Choice of energy level d. Intensifying screens 1. Lead foil 2. Fluorescent e. Control of secondary radiation (scatter) f. Use of exposure curves (H&D) g. Definition of sensitivity and the method of checking this on a radiograph (I.Q.I.) F. Radiation Safety a. Hazard of excessive exposure b. Methods of controlling radiation doses 1. Time 2. Distance (inverse square law) 3. Shielding (half value layers) c. Equipment used in controlling radiation safety 1. Handling methods 2. Survey meters 3. Record keeping

4 4. Alarms 5. Radiations surveys d. Operation and emergency radiation procedures e. Federal, state and local regulations f. Instrumentation 1. Meters, Geiger counters and others 2. Dosimeters 3. Film badges g. Major quiz over E and F G. Radiographic Procedures and Techniques a. Procedure methods 1. Manufacturing codes 2. Testing specifications 3. Examination procedure 4. Acceptance standards b. Techniques 1. Geometric principles 2. Arithmetic of exposure and other factors affecting the exam 3. Development of a technique chart 4. Blocking and filtering 5. Multi-film techniques 6. Determination of focal spot size 7. Panoramic techniques H. Interpretation of Radiographic Film a. Basic factors 1. General introduction to the aspects of good film interpretation 2. Radiograph image measurement and interpretation of test b. Discontinuities classification 1. Causes 2. Effects 3. Appearance c. Material processing effects on radiographic interpretation and test result 6. Lab Requirements (if any) (This item may be omitted if no lab is required) Students will do the following: 1. Make a step wedge exposure by using: a. Gamma ray source b. X-ray sources 2. Measure radiographic density by using a densitometer 3. Determine source activity 4. Calculate required safe distance and shielding 5. Weld radiography by using: a. Gamma source b. X-ray source

5 6. Basic film interpretation for: a. Technique b. Discontinuities evaluation 7. Students with Disabilities BC is committed to providing equal education opportunities to every student. BC offers services for individuals with special needs and capabilities including counseling, tutoring, equipment, and software to assist students with special needs. Please contact Phil Robertson, Special Populations Counselor, for further information. 8. Academic Honesty BC assumes that students eligible to perform on the college level are familiar with the ordinary rules governing proper conduct including academic honesty. The principle of academic honesty is that all work presented by you is yours alone. Academic dishonesty including, but not limited to, cheating, plagiarism, and collusion shall be treated appropriately. Please refer to the BC Student Guide for more information, this is available online at click on the link found on the left side of the homepage. 9. Attendance and Withdrawal Policies The class meets for 1 lecture hour and 5 lab hours per week. Students are responsible for all class work assigned during any absence. The instructor will accept work without penalty, when, in his judgment an absence could not be avoided. Absences: Students not attending class regularly will be administratively withdrawn from class by the instructor. Students will be considered absent if not in class within the first hour of a five hour class time. Students in this class are subject to withdrawal for accumulating 3 consecutive or 4 total semester absences. The instructor may reinstate the student after withdrawal if, in the judgment of the instructor, the absences do not jeopardize satisfactory course completion or may not reinstate the student. Student will be dropped: Cell phones in the class room or in welding lab will no longer be allowed. If the student is caught using a cell phone 3 times, it will be an automatic drop from the class. Butane Lighters are not allowed with no further warning the student will be dropped from class. For Distance Education: Online students should be informed of course login policies, attendance requirements, submission of work as evidence of attendance, and how to withdraw from the course. 10. Course Requirements and Grading Policy = A = B = C = D Below 60 F 11. Testing Home work/lab assignment, attendance 10% Mid-term examination & major quizzes 20% Final course theory examination 50% Laboratory Hands on practical examination 20% 100%

6 For Distance Education: Be sure to state if testing is required to be proctored and explain the procedures clearly, including logging in to a test site. 12. Make-up policy If you allow students to makeup assignments or assessments include that information here, if no makeup is allowed state it clearly. 13. Student Responsibilities The student must demonstrate proper manner in classroom participation by having appropriate materials, keeping work area clean and organized, observing all safety rules pertaining to laboratory work, being present for all test or quizzes, being punctual, and turning in all assignments when due. Each student will spend at least 7 hours per week preparing for class. Each student will be asked to complete an Instructor/Course Evaluation at the end of the course. Attendance is critical in the class. Students are expected to fully participate in the course. The following criteria are intended to assist you in being successful in this course. a. Time Management b. Understanding the Syllabus Requirements c. Utilizing Online Components (such as WebCT) d. Communicating with the Instructor e. Completing Course Work 14. Projects, Assignments, Portfolios, Service Learning, Internships, etc. This should be a brief list, an overview, not the actual details for each activity or assignment a basic road map through the semester without specific dates or timeframes. This will enable you to carry the syllabus forward each semester so long as you will take care of any major changes in the learning objectives or the way you plan to conduct the course. For Distance Education: The earlier we can post the course with its syllabus, the more likely that we will be able to attract students from other colleges. (See separate section details of course content and calendar.) 15. Other Student Services Information This list is provided to assist students locate available services. Information about the BC Library is available at or by calling Tutoring for Math, Reading, Writing, Biology, Chemistry, and other subjects is available in the LAC, To contact the (name of dept.) Department call (add phone # here). The Student Services area provides the following services Counseling and Advising, ; Financial Aid,3294; and Student Activities,3355. For Distance Education: Distance Learning Support Information, To reach the Information Technology dept. for technical assistance call the Helpdesk ,. (See the next page for information regarding course schedule and calendar; do not include this statement on your syllabus)

7 On a Separate Page to be updated every semester. ****Additional Information not part of the syllabus File. ****Within WebCT as a separate HTML page add the following information to be linked. 1. Course Content Describe the course content here in detail. 2. Course Calendar with Assignments Enter your calendar here with specific dates; this should include any reading, homework, posting, and lab assignments.