RADCON TECHNICIAN TRAINING - PowerPoint PPT Presentation

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RADCON TECHNICIAN TRAINING

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  1. RADCONTECHNICIANTRAINING Welcome-You may click the left mouse button or use the Enter key to advance.

  2. ForeignMaterialExclusion Computer Based Training HPT001.113

  3. About This Course • You may use the “P”keyto go to the previous screen. HPT001.113

  4. About This Course • This Computer Based learning activity has been developed from the material in the lesson plan on Foreign Material Exclusion (HPT001.113). HPT001.113

  5. Foreign Material ExclusionOBJECTIVES • Terminal Objective: • Upon completion of this lesson the student will demonstrate satisfactory knowledge of the TVAN Foreign Material Control Program by scoring at least 80% on an examination. SPP-6.5 is allowed as reference material for the exam. HPT001.113

  6. Foreign Material ExclusionOBJECTIVES • The examination for this CBT will be provided on the computer. • A proctor must allow you access to the examination. • The software will score each question as you answer it. HPT001.113

  7. Foreign Material ExclusionOBJECTIVES • Enabling Objectives 1. Define terms outlined in the FME procedure and this course. 2. State the purpose of Foreign Material Exclusion. 3. Identify responsibilities of various personnel for work preparation through job closure to include recovery from loss of FME controls. 4. Identify the most common causes of Foreign Material Intrusion (FMI). 5. Identify potential radiological hazards and other concerns resulting from FMI or loss of FME controls 6. Identify FME requirements for special activities and specific areas. 7. Identify points from industry events concerning FME, including SOER 95-1. 8. Correlate error prevention tools used to prevent foreign material intrusion. HPT001.113

  8. Foreign Material ExclusionREFERENCES A. SPP-6.5, Foreign Material Control, Revision 7, effective date 07/11/2003. B. HPT001.113, Foreign Material Exclusion, RADCON Technician Training Program, Revision 0. C. INPO SOER 95-1, Reducing Events Resulting from Foreign Material Intrusion. D. BFN PERs E. NRC Inspection Report No. 50-390/97-11 HPT001.113

  9. Foreign Material ExclusionTraining Materials and Aids • Access and/or print the following documents you will need for the course by clicking on the icon: SPP 6.5, “Foreign Material Control, latest revision. Student Notebook HPT001.113

  10. Foreign Material ExclusionIntroduction Foreign material introduced into plant systems can cause equipment degradation, inoperability of components, or even fuel damage which may lead to higher radiation and contamination levels. HPT001.113

  11. Foreign Material ExclusionIntroduction Intrusion of foreign material into primary systems can also create activated products which cause more radiation dose to personnel. HPT001.113

  12. TVAN has had its share of FME events. Just a few are included here.

  13. Foreign Material ExclusionIntroduction - BFN Events • 1998 - A hose was floating in the Unit 3 spent fuel storage pool. The hose broke and part fell to the bottom of the pool. • 1998 - Foreign material was found in steam trap 2-TRP-073-005 at BFN and appeared to be welding slag and grinding dust. The trap had been replaced during U2C9 outage. HPT001.113

  14. Foreign Material ExclusionIntroduction - BFN Events • 1997 - Clear cellophane wrap was used to support RADCON activities on the refuel floor. This is contrary to FME control requirements. • 1995 - Plastic type material was wrapped around the lower suction portion of the BFN 3A core spray pump impeller. HPT001.113

  15. Significant industry events continue to occur due to inadequate control of Foreign Material. INPO SOER 95-1 provides insights into the most prevalent causes of foreign material intrusion events and identifies some effective industry practices for preventing foreign material intrusion. Foreign Material ExclusionIntroduction HPT001.113

  16. Foreign Material ExclusionIntroduction • Several other events and SOER 95-1 concerning foreign material intrusion will be reviewed later in this course. HPT001.113

  17. Foreign Material ExclusionIntroduction • For these reasons, nuclear plants have a Foreign Material Control program in place. FME Control Program HPT001.113

  18. Foreign Material ExclusionIntroduction • SPP 6.5, Foreign Material Controls, provides requirements for maintaining nuclear plant cleanliness by preventing the uncontrolled introduction of foreign material such as maintenance residue, dirt, debris, or tools into open systems or components, and recovery from intrusion of foreign material. HPT001.113

  19. Foreign Material Exclusion SPP-6.5, Foreign Material Control, emphasizes an attitude of “focus on prevention”. HPT001.113

  20. Foreign Material ExclusionIntroduction • In addition to programs and procedural direction, our work practices and habits have a great impact on the end result of all that we do. The success of TVAN’s FMI Program depends on YOU! HPT001.113

  21. Foreign Material ExclusionProcedure • SPP 6.5 requirements apply to all maintenance, modification, operations and testing activities which involve open systems or components. HPT001.113

  22. FME Controls Foreign Material ExclusionProcedure • The methods used to control foreign materials within areas will depend on the configuration and safety significance of the system, the activity being performed, and the probability of foreign material intrusion. Procedure Adherence is an error prevention tool!!! HPT001.113

  23. Foreign Material ExclusionProcedure • Several activities such as valve packing and pump repacking are NOTconsidered as opening of a component or system. • Also, some activities are exempt from the FME requirements under certain conditions. Review SPP 6.5, Section 2.0 for more examples of the above. HPT001.113

  24. Foreign Material ExclusionTERMS AND DEFINITIONS The following definitions from SPP 6.5 are important and are found in Section 5.0 HPT001.113

  25. Foreign Material ExclusionTERMS AND DEFINITIONS • Foreign Material Exclusion - Preventing the inadvertent introduction of foreign material, such as dirt, debris, maintenance residue, tools and equipment into open plant systems or components. HPT001.113

  26. Foreign Material ExclusionTERMS AND DEFINITIONS • FME Area- A work area where specific controls are implemented to prevent the introduction of foreign material into systems or components during the performance of maintenance, modifications, test or inspection activities. HPT001.113

  27. Foreign Material ExclusionTERMS AND DEFINITIONS • Maintenance Residue- Any by-product of a maintenance activity, such as chemical deposits from solvents, particles and filings from cutting, grinding or lapping dust, wood chips from scaffolding, tape adhesive, and welding or soldering residue. HPT001.113

  28. Foreign Material ExclusionTERMS AND DEFINITIONS • Source Term- The quantity of radioactive materials (corrosion products and fission products) contained in the Reactor Coolant System (RCS). HPT001.113

  29. Foreign Material ExclusionTERMS AND DEFINITIONS • Fail-Safe- Describes an item which is too large to fit through the sensitive openings in systems, components, or equipment. HPT001.113

  30. Fail Safe (cont.)- Component parts of the item must be secured to prevent loss and the item must be easily retrieved from the system or component. Foreign Material ExclusionTERMS AND DEFINITIONS HPT001.113

  31. Foreign Material ExclusionTERMS AND DEFINITIONS • Fail Safe (cont.) - During refueling activities, in the area of open pools of water, an item may be considered fail-safe if the configuration of the item makes it readily retrievable, even though it is small enough to fit through available system openings. HPT001.113

  32. Foreign Material ExclusionTERMS AND DEFINITIONS • Qualified FME Monitor (FMEM) -A person who has had training concerning FME procedures and controls, duties of FMEM, and actions to be taken should loss or suspected loss of FME control occur. HPT001.113

  33. Foreign Material ExclusionTERMS AND DEFINITIONS • The FMEM must be knowledgeable of • FME requirements, • use of accountability logs, • their responsibility to remain at or near the entrance to FME control area, • the logging in and out of items and/or personnel, • and verification (accountability) for all items before closure or removal of boundaries/barriers. HPT001.113

  34. Foreign Material ExclusionTERMS AND DEFINITIONS • FME Accountability Log- A chronological listing used to account for items and personnel that enter and exit FMEAs. HPT001.113

  35. Foreign Material ExclusionTERMS AND DEFINITIONS • Temporary Cover - A method to cover and protect a system or component from the introduction of foreign material when the system or component is left unattended. SPP 6.5 has several specific requirements for temporary covers. HPT001.113

  36. Foreign Material ExclusionTERMS AND DEFINITIONS • Lanyard- A line, rope or cord used to secure or restrict an object from movement or loss. Lanyards should be made of nylon or corrosion resistant steel wire. The shortest length should be such that it minimizes dropping distance and limits the object from hitting and damaging surrounding equipment. In no case shall a personnel hazard be caused to exist by the use of lanyards! HPT001.113

  37. Foreign Material ExclusionTERMS AND DEFINITIONS • Non-fail-Safe - Describes an item which could be introduced into sensitive openings of systems or components. HPT001.113

  38. Foreign Material ExclusionTERMS AND DEFINITIONS • Non-fail-Safe(cont.)- This introduction could occur by the item itself falling into or part of the item falling into the openings. Can you think of a Non-fail-safe item where part of the item could fall into openings??? HPT001.113

  39. Foreign Material ExclusionTERMS AND DEFINITIONS • For example: a lens holder comes off a flashlight, allowing batteries, lens and holder to fall into an open system or component. • This type of item is considered nonfail-safe, and shall require additional methods, such as lanyards, taping, and bagging to prevent loss. HPT001.113

  40. Foreign Material ExclusionWork Steps Work Planning Work Preparation Work Performance HPT001.113

  41. Work Planning HPT001.113

  42. Foreign Material ExclusionWork Planning • A FME evaluation for controls should be performed whenever a system or component is to be opened. This evaluation is typically performed by the work planner. • For standard, recurrent activities in which FME is required, a mandatory FME list and standing instructions concerning FME controls (requirements) should be developed. • An example is SPP 6.5, Appendix F, BFN Spent Fuel Pool, Vessel Cavity, and Equipment Pit - Level 3 Appendices B - G contain other BFN requirements. HPT001.113

  43. Foreign Material ExclusionWork Planning • More stringent FME requirements may be mandated for any work activity than is listed in the Appendices of the SPP. • Especially important for work on valves which have stellite hard-facings and where particles could come in contact with reactor coolant. HPT001.113

  44. Foreign Material ExclusionWork Planning • Less stringent controls must be approved by the FME Program Coordinator or designee. HPT001.113

  45. Work Preparation HPT001.113

  46. Foreign Material ExclusionWork Preparation • Work Supervisor Responsibilities: • Brief the work crew(s) • Assign qualified FME monitor • Define FME area boundaries to be established • Worker Responsibilities: • Establish boundaries and markers • Remove nonessential material from the FMEA/adjacent areas • Clean the FMEA (including overhead and components) of dirt and debris • Erect a clean enclosure or barrier around the FMEA • Make all items fail-safe • Remove unsecured personal items (jewelry, wallet, coins, etc.) HPT001.113

  47. STOP DO NOT REMOVE WITHOUT AUTHORIZATION OF Work Supervisor Phone # Foreign Material ExclusionWork Preparation • FME areas must be bounded and marked. HPT001.113

  48. Foreign Material ExclusionWork Preparation FOREIGN MATERIAL EXCLUSION AREA AUTHORIZED PERSONNEL ONLY • The STOP sign and these FMEA boundary postings (or similar ones) are used. FOREIGN MATERIAL EXCLUSION AREA AUTHORIZED PERSONNEL ONLY FME MONITOR APPROVAL REQUIRED BEFORE ENTRY HPT001.113

  49. FME Monitor Foreign Material ExclusionWork Preparation • FME Monitor Responsibilities • Perform and document an initial inventory of all non-permanent items that are not fail-safe within the FMEA using an approved FME Accountability Log. • Concurrence must be obtained from the job supervisor. HPT001.113

  50. Work Performance HPT001.113