adiation safety management practices in 19th preventative maintenance of kori unit 4 and future...
TRANSCRIPT
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
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,.
Korea Nuclear Eng,.Korea Nuclear Eng,.
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,.
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,.
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,.
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,.
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,.
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,.
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,.
Korea Nuclear Eng,.Korea Nuclear Eng,.
summary issues
Korea Nuclear Eng,.Korea Nuclear Eng,.
Korea Nuclear Eng,.Korea Nuclear Eng,.
Expected effection
Korea Nuclear Eng,.Korea Nuclear Eng,.
