adiation safety management practices in 19th preventative maintenance of kori unit 4 and future...
TRANSCRIPT
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adiation safety management practices
in 19th preventative maintenance
of Kori unit 4 and future plans
adiation safety management practices
in 19th preventative maintenance
of Kori unit 4 and future plans
![Page 2: adiation safety management practices in 19th preventative maintenance of Kori unit 4 and future plans](https://reader033.vdocuments.net/reader033/viewer/2022051418/5697bfe21a28abf838cb4a98/html5/thumbnails/2.jpg)
Table of Contents
1. Improvement practices of Radiation Safety Management - Introduction
1. Improvement practices of Radiation Safety Management - Introduction
2. Improvement practices of Radiation Safety Management - the point
2. Improvement practices of Radiation Safety Management - the point
3. Improvement practices of Radiation Safety Management - conclusion
3. Improvement practices of Radiation Safety Management - conclusion
4. Future plan - automatic decontamination device for contaminated protect wear
4. Future plan - automatic decontamination device for contaminated protect wear
Korea Nuclear Eng,.Korea Nuclear Eng,.
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Korea Nuclear Eng,.Korea Nuclear Eng,.
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The role of Safety Manager And Dose reduction techniques
Improvement practices of Radiation Safety Management - Introduction
Practices of process control by each water level control
of S/G secondary side
Automatic decontamination device for contaminated
protect wear
Worker Management Protection Control
Korea Nuclear Eng,.Korea Nuclear Eng,.
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RCS water level S/G secondary side water level
Improvement practices of Radiation Safety Management – the point
Reduction radiation dose exposure of workers by process control depend on each water level control of S/G secondary side
Korea Nuclear Eng,.Korea Nuclear Eng,.
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Comparison of radiation dose at main point due to water level of S/G secondary side
Improvement practices of Radiation Safety Management – the point
Reduction radiation dose exposure of workers by process control depend on each water level control of S/G secondary side
Korea Nuclear Eng,.Korea Nuclear Eng,.
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Perform to the work at inside of S/G secondary side
Man-Way
○ impossible to emplace of shielding
○ hot and humid of workplace → not easy to wear shield garment
Process control for moisture separator work and
Lancing/FOSAR
○ keep the water level more than 70% – space radiation dose rate↓
○ Lancing / FOSAR working with fully drained – space radiation dose
rate ↑
○ process control in order to not perform the working of moisture
separator and Lancing / FOSAR at same time
→ keep the water level more than 70% at working of moisture
separator
Process control by each water level – S/G moisture separator work
Improvement practices of Radiation Safety Management – the point
Reduction radiation dose exposure of workers by process control depend on each water level control of S/G secondary side
Korea Nuclear Eng,.Korea Nuclear Eng,.
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Process control for each water level – 126ft
Improvement practices of Radiation Safety Management – the point Reduction radiation dose exposure of workers by process control depend on each water level control of S/G secondary side
Korea Nuclear Eng,.Korea Nuclear Eng,.
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complete The
working
complete The
working
Orderly progression other working
Orderly progression other working
Complete Lancing & FOSAR
/ conform fill water
Complete Lancing & FOSAR
/ conform fill water
complete The
working
complete The
working
complete Lancing & FOSAR
/ conform fill water
complete Lancing & FOSAR
/ conform fill water
Process by each water level – 126ft
completeThe
working
completeThe
working
Orderly progression other working(ISI, RCP, snubber, valve)
Orderly progression other working(ISI, RCP, snubber, valve)
Complete Lancing & FOSAR
/ conform fill water
Complete Lancing & FOSAR
/ conform fill water
Lancing & FOSAR working With complete drainage
Lancing & FOSAR working With complete drainage
After drainage S/G Lancing& FOSAR
After drainage S/G Lancing& FOSAR
Orderly progression other working
(ISI, RCP, snubber, valve)
Orderly progression other working
(ISI, RCP, snubber, valve)
After drainageS/G Lancing& FOSAR
After drainageS/G Lancing& FOSAR
Orderly progression other working(ISI, RCP, snubber, valve )
Orderly progression other working(ISI, RCP, snubber, valve )
S/G ‘B’
S/G ‘C’
S/G ‘A’
Improvement practices of Radiation Safety Management – the point Reduction radiation dose exposure of workers by process control depend on each water level control of S/G secondary side
Korea Nuclear Eng,.Korea Nuclear Eng,.
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12%
600
target
985
763
993.24
642.76
result target
result
단위 [man-mSv]
단위 [man-mSv]
Improvement practices of Radiation Safety Management – conclusion
Reduction radiation dose exposure of workers by process control depend on each water level control of S/G secondary side
Korea Nuclear Eng,.Korea Nuclear Eng,.
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Korea Nuclear Eng,.Korea Nuclear Eng,.
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summary issues
Korea Nuclear Eng,.Korea Nuclear Eng,.
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Korea Nuclear Eng,.Korea Nuclear Eng,.
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Expected effection
Korea Nuclear Eng,.Korea Nuclear Eng,.
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