Operating margin for radioactive effluent released to the environment from korean pressurized water reactors compared to the effluent control limits, obtained by monitoring the concentration of radioactive effluent with radioactive effluent monitors

2019 ◽  
Vol 56 (8) ◽  
pp. 764-769
Author(s):  
Tae Young Kong ◽  
Siyoung Kim ◽  
Youngju Lee ◽  
Jung Kwon Son
Keyword(s):  
Pressurized Water Reactors ◽  
Pressurized Water ◽  
Radioactive Effluent ◽  
Operating Margin ◽  
Water Reactors ◽  
Control Limits

scholarly journals Methodology for determination of alarm and warning set-points for radioactive effluent monitors in Korean pressurized water reactors

2018 ◽  
Vol 33 (4) ◽  
pp. 406-410 ◽  
Author(s):  
Tae Kong ◽  
Siyoung Kim ◽  
Youngju Lee ◽  
Jung Son
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Active Management ◽  
Pressurized Water Reactors ◽  
Regulatory Body ◽  
Pressurized Water ◽  
Radioactive Effluent ◽  
Regulatory Limits ◽  
Water Reactors

All radioactive gaseous and liquid effluents discharged from Korean nuclear power plants are monitored by effluent monitors to prevent effluent releases to the environment under uncontrolled conditions. This paper provides the methodology and parameters used in the calculation of alarm (high) and warning (low) set-points for gaseous and liquid effluent monitors in Korean pressurized water reactors. Alarm set-points are determined to assure compliance with the Korean regulatory limits of concentration of radioactive effluents. Even though warning set-points are not required by the regulatory body, Korean pressurized water reactors determine the warning set-points of effluent monitors not only to take an active management of effluent discharge but also to keep radiation doses to members of the public living around nuclear power plants as low as reasonably achievable.

scholarly journals Characteristics of Radioactive Effluent Releases from Pressurized Water Reactors after Permanent Shutdown

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2436
Author(s):  
Ji Su Kang ◽  
Jae Hak Cheong
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Source Term ◽  
Monitoring Program ◽  
Pressurized Water Reactors ◽  
Pressurized Water ◽  
Radioactive Effluent ◽  
Theoretical Reasoning ◽  
Discharge Monitoring ◽  
Water Reactors

In order to expand our understanding of the characteristics of radioactive effluent from nuclear power plants under decommissioning, which have not been systematically investigated, a series of source term models of radioactive effluent after permanent shutdown has been established based upon theoretical reasoning on the design and operation features of plants and derived in terms of fifteen arguments. Comprehensive radioactive effluent data have been collected and profiled from twenty-eight decommissioning pressurized water reactors, and annual trends of effluent from each plant have been quantitatively analyzed using Mann-Kendall statistical test. In addition, the characteristics of collected effluent data have been qualitatively interpreted based upon arguments newly proposed in this study. Furthermore, potential decreasing of dilution factor for liquid effluent and its safety implications are identified. The source term models and verified characteristics of radioactive effluent after permanent shutdown developed in this study can be used for establishing more efficient discharge monitoring program for decommissioning authorization.

INCONEL FILLER METAL 52

Alloy Digest ◽  
1992 ◽  
Vol 41 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Arc Welding ◽  
Filler Metal ◽  
Pressurized Water Reactors ◽  
Pressurized Water ◽  
High Chromium ◽  
Inconel Alloy ◽  
Gas Tungsten Arc ◽  
Alloy 690 ◽  
Water Reactors

Abstract INCONEL FILLER METAL 52 is a high chromium filler metal for gas-metal-arc and gas-tungsten-arc welding of Inconel Alloy 690 (See Alloy Digest Ni-266, March 1981). Higher chromium is beneficial in resisting stress-corrosion cracking in high purity water for pressurized water reactors and for resistance to oxidizing acids. This datasheet provides information on composition and tensile properties. It also includes information on corrosion resistance as well as joining. Filing Code: Ni-412. Producer or source: Inco Alloys International Inc..

JESSOP-SAVILLE ZIRCONIUM ALLOY

Alloy Digest ◽  
1965 ◽  
Vol 14 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Zirconium Alloy ◽  
Heat Treating ◽  
Pressurized Water Reactors ◽  
Neutron Absorption ◽  
High Melting Point ◽  
Absorption Properties ◽  
Pressurized Water ◽  
Excellent Corrosion Resistance ◽  
Water Reactors

Abstract JESSOP-SAVILLE ZIRCONIUM Alloy has a high melting point and possesses excellent corrosion resistance coupled with low neutron absorption properties. It is equivalent to ZIRCALOY 2. It is recommended for pressurized water reactors. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Zr-2. Producer or source: Jessop-Saville Ltd, Brightside Works.

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