Regional Basic Professional Training Course in Korea

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Regional Basic Professional Training Course (BPTC) on Nuclear Safety requires high operating temperature and involves certain fire risks. A volume reduction factor of two is typically achieved via bituminization. The product characteristics vary according to the characteristics of waste and process. The mechanical stability is poor (plasticity, swelling); radiation resistance is satisfactory for LILW from NPPs and the leach resistance ranges from poor to satisfactory. Also bituminized waste is compatible with most environmental conditions. Polymer fixation is applicable to most wet wastes but in not widely used due primarily to the high price of the fixation agent. Polymers like polystyrene, polyester epoxy and vinyl‐ ester have been used. The process takes place at room temperature but good control of the chemical reactions is necessary. The waste may contain excess water and polymerization results in a slight volume increase. The leach resistance of polymer products is generally higher than that of cement products. Polymers can, over long times, degrade to form complexants which may increase the mobility of some radionuclides. Organic and other liquids, which cannot be treated by means of the methods discussed above, can be absorbed into special granular or powdered agents, resulting in a semi‐solid end product. Ion exchange resins and filter masses of low activity may also be dewatered and packed into durable containers as such, without immobilization. Treatment of dry solid waste normally involves volume reduction. For this, mechanical, thermal, chemical and biological methods can be used; these are discussed below. Segmentation and other size reduction techniques are used to facilitate the packaging of bulky waste batches, such as worn‐out equipment and components. Oxygen burning, various sawing methods, hydraulic shearing, abrasive cutting, and plasma arc cutting can be used for segmentation. Prevention of particulate contamination should be considered in the choice of method. Compaction can reduce waste volume by a factor from 2 to 10. Compactors vary from balers and in‐drum compactors with modest pressing force up to 2000 t super compactors. ❙ 1032 ❙
❙ 1033 ❙ 20. Waste Management The latter are available also in mobile units and they are normally used for further compaction of waste drums; the crushed drums are then enclosed into an over‐pack. The compactors are usually equipped with HEPA filters to prevent spread of contamination. Incineration requires waste segregation but can produce volume reduction factors up to 100 for the combustible portion of the waste. Incinerators have capacities from some tens to a few hundreds of kg/h. They are normally central facilities, located e.g. at nuclear research centers. The more advanced incinerators have afterburners to decompose combustible gases. Ash from incinerators is normally grouted in wet cement in order to immobilize radioactive substances and to provide radiation shielding. Secondary waste is generated in the form of filters. Melting occurs also in central facilities and various melting technologies are in use. Melting is generally not an economic treatment method for waste to be disposed of, but for metal scrap below clearance levels or for very low level waste to be recycled in the nuclear industry, it may be a practicable way of homogenizing the material. Secondary waste is generated in the form of slag and off‐gas filters. Chemical or biological treatment such as acid digestion, chemical oxidation and microbial digestion are mostly still at the development and demonstration phase. They might not be applicable for the large waste quantities from the operation of NPPs. Decontamination reduces the radioactivity on the surface of a contaminated material and thereby it may be brought below clearance levels for recycling. The removed contamination must then be conditioned in a proper way. A variety of decontamination methods exist: mechanical scrubbing and brushing, chemical gel and foam treatment, water and steam jet cleaning, electrochemical treatment, and ultrasonic cleaning. The container in which conditioned waste is enclosed may have the following major
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1. Nuclear Reactor Principles · 1
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1. Nuclear Reactor Principles Regio
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Table 1.2. Average cross sections f
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1. Nuclear Reactor Principles ❙ 7
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energy of the fuel nuclei. ❙ 9
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❙ 11 ❙ 1. Nuclear Reactor Princ
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1 Bq = 2.7x10 -5 µCi = 2.7x10 -8 m
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1.1.5. Natural radioactive series
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238 U 92+ 1 n0 -----> 135 Te 52 + 9
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σ t = σ s + σ a = σ elastic +
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FIG. 1.10. And here in the 1keV to
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1.2.3.2. Neutron emission in fissio
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Three possible states could then be
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TABLE 1.3. Slowing down efficiency
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1 UNGG/AGR CANDU PWR/BWR TABLE 1.5.
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✼✼✼ REFERENCES ✼✼✼ ❙
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2.1. Introduction C O N T E N T S 2
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2. Radiation Protection 2.1. Introd
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2.2.1. Exposure ❙ 61 ❙ 2. Radia
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❙ 63 ❙ 2. Radiation Protection
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2.2.4. Effective dose ❙ 67 ❙ 2.
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schematically in Fig. (2.7). ❙ 77
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The great utility of the G‐M tube
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protection conditions. These factor
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2.6.2. Effects of dose, dose‐rate
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2.7. Principles of Radiological Pro
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❙ 115 ❙ N 0 = N 2 1 t / t 1/ 2
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ln 10 = μ t1/10 ≈ 3 · ln 2 = 3
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C O N T E N T S | Table of Contents
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Fig. 1 Committees for IAEA Safety S
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Regional Basic Professional Trainin
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❙ 221 ❙ 4. DESIGN OF NUCLEAR RE
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4.1.1.2. The concept of defence in
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4.1.2. Requirements for management
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administrative control. ❙ 231 ❙
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Design basis accidents ❙ 237 ❙
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Single failure criterion ❙ 239
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Deterministic approach The determin
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accidents, with account taken of th
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Fuel elements and assemblies Fig. 4
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Reactor shutdown ❙ 251 ❙ 4. DES
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functional in the event of a severe
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4.1.5.4. Instrumentation and contro
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4.1.5.9. Radiation protection Gener
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Operation at a power level < 1 MW.
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of these exchangers, the water is c
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Fig. 4.11. HANARO Core Pool Fig. 4.
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4.2.6.2.3 Reactor Systems ❙ 295
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4.2.6.5. Neutron Activity Analysis
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❏ physical separation. ❙ 303
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5. Siting Considerations Regional B
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5.4.2. Sources of risk 5.4.3. Evalu
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6. Safety Classification Of Structu
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Safety functions necessary to preve
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6.1.3. Principal Safety Classes 6.
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function; 6. Safety Classification
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the safety function would be requir
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6.3.2. Description of Quality Group
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6.4.3. Seismic category 1: 6.4.3.1.
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7. Quality Assurance Regional Basic
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7.5.1. Manufacture Quality Assuranc
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C O N T E N T S 8.1. INTRODUCTION |
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❙ 471 ❙ 8-A. Deterministic Acci
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guidelines for this categorization.
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Table 8‐3 Typical Initial Conditi
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8.5.3. Decrease in Reactor Coolant
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or by operator error, often during
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8-B. Deterministic Accident Analysi
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| List of Tables | Table 8.7‐1 Ru
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❙ 509 ❙ 8-B. Deterministic Acci
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SG Containment RCP RCP RCP SIT SIT
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8.2.5. Evaluation Model ❙ 521 ❙
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Figure 8.7‐7 Flow chart of KREM
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Cladding Temperature (K 1300 1200 1
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8.8.1.6. Loop Seal Formation and Cl
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to ECCS injection time using CEFLAS
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Table 8.8‐2 SBLOCA Break Spectrum
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F TEMPERATURE, o 0 100 200 300 400
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8.8.2.2.3 RELAP5‐sEM Methodology
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9. Probabilistic Safety Analysis Re
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9.4. LEVEL 2 PSA 9.4.1. Objectives
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❙ 627 ❙ 10-A. Limiting Conditio
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performance, correct set points, an
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injecting borated water into the pr
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Positive reactivity insertion rates
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10.4.3.3. Canadian type NPP ❙ 655
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2) Safety Limits and Safety System
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the technical specifications is not
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10-B. Technical Specifications for
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10.7.7.1. Monitoring Systems 10-B.
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10.8.1. Reactor Core Parameters 10-
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10.8.6. Emergency Power 10-B. Techn
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authorized by responsible authority
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11. Human Performance: A Perspectiv
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Figure 11.1 Model of violation Figu
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12. Surveillance Programmes Regiona
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12.4. IMPLEMENTATION 12.4.1. Genera
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13.Maintenance Management in KHNP R
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❙ 799 ❙ 13.Maintenance Manageme
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15. Operational Safety 15.1. IAEA S
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❙ 831 ❙ 15. Operational Safety
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and modified if required. ❙ 837
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15.2.2. Organization and functions
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− Temporary and permanent plant m
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Operating procedures and instructio
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Off‐normal conditions are easily
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15.2.6. Work authorizations ❙ 859
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conventional hazards at the point o
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15.2.7. Accident management ❙ 863
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commissioning process. ❙ 869 ❙
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Event reports and root cause analyz
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Material regarding evaluation of ex
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Monitoring of initiatives in progre
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16. In‐Plant Accident Management
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❙ 895 ❙ 16. In‐Plant Accident
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16.2.2. Safety Functions ❙ 899
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is to place the plant in a safe, st
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each a final stable and controlled
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16.3.5. Review of Korean SAMG by KI
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this stage. Control rod degradation
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Pressurization of the containment
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Fractional Relase Fractional Relase
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19. Decommissioning Regional Basic
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| List of Tables | Table 1. Stages
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Page 988 and 989: Regional Basic Professional Trainin
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subdivided in 4 sub‐objectives, w
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❙ 1085 ❙ 21. Safety Culture pro
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21.4.4. Specific safety management
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21.4.4.5. Self assessment ❙ 1089
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AtomCARE Regional Basic Professiona
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AtomCARE 1. OVERVIEW OF NATIONAL RA
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❙ 1121 ❙ AtomCARE The RETAC of
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❙ 1123 ❙ AtomCARE secondary rad
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❙ 1125 ❙ AtomCARE actions by pr
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2.1.4. Component Modules (Configura
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Classification Major Functions Tech
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❙ 1131 ❙ AtomCARE containment b
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❙ 1133 ❙ AtomCARE b) Monitors a
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a) Calculates the distribution of t
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❙ 1137 ❙ AtomCARE telephone or
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Introduction Of e‐FAST and Exerci
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| List of Figures | Fig. 1.1 Schema
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C O N T E N T S 1.1. OVERVIEW OF TH
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❙ 1181 ❙ Nuclear Safety Informa
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1. Overview of OPiS C O N T E N T S
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Regional Basic Professional Training Course in Korea

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