Table of Content

20 June 2017 Volume 37 Issue 3

  

Analysis of Regional Radiation Monitoring System Design Schemefor the Fast Reactor Demonstration NPP

RADIATION PROTECTION BULLETIN. 2017, 37(3):  1-4. 

Abstract ( 26 )  

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In this paper, the preliminary designof the area radiation monitoring system for fisrt Chinese-designed fast reactorNPP (CFR600) has been completed. A comparison of radiation monitoring systems is made between the China Experimental Fast Reactor (CEFR) and a typical PWR NPP,thus providing a theoretical basis for the next stage of construction design.

Equipment Qualification under Severe Accident at Pressurized Water Reactor NPP

RADIATION PROTECTION BULLETIN. 2017, 37(3):  5-8. 

Abstract ( 24 )  

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This article describes the research contents and conclusions of equipment qualification in the condition of severe accident at PWR NPP. The detailed discussion and analysis were made of the principles of identifying equipment, the determination method of testing environmental conditions, like pressure, temperature and radiation dose, and the process of carrying out equipment qualification.

Analysis of the Application about the Radiation Work Permit (RWP) in Radiation Protection Management

RADIATION PROTECTION BULLETIN. 2017, 37(3):  9-13. 

Abstract ( 31 )  

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Radiation Work Permit (RWP) is among alicensing system, aimed at improving radiation risk analysis during work preparation at a NPP, the refined management of radiation protection, and gathering and feedback of data and experience. This paper discusses the application of RWP in radiation protection at NDNP with exisiting problem as and example.

Environmental Radiation Monitoring at Yangjiang NPP (2014-2016)

RADIATION PROTECTION BULLETIN. 2017, 37(3):  14-18. 

Abstract ( 24 )  

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This paper introduces the environmental radiation monitoring at Yangjiang Nuclear Power Base from 2014 through 2016, including environment air gamma radiation absorbed dose rate,TLD,and the monitoring data of some major radionuclides as well. Then by analysis lessons drawn through practices are summarized. Results show the running of Yangjiang Nuclear Power Base from 2014 through 2016 has no perceptible effects on the environment,andits radioactive environmental quality remains basically at the same level as the background investigated before operation.

The Optimization and Practice of the CPR1000 cementation

RADIATION PROTECTION BULLETIN. 2017, 37(3):  19-24. 

Abstract ( 26 )  

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In order to increase cementation efficiency, the optimization and practice were conducted for waste transfer and operational steps in cementation process. Reasonal arrangement and cross-work have shown that the cementation of spent resin and concentrates and the immobilizationof disued filter core increased by 36%, 28% and 37% respectively.

Some Discussions on Regulatory Inspection and Management of Radiation Safety at γ Irradiation Facilities

RADIATION PROTECTION BULLETIN. 2017, 37(3):  25-27. 

Abstract ( 23 )  

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Discussions were made of existing problems discovered during regulatory inspection to γirradiation facilities in therecent years. Some suggestions on the safe operation and management ofγirradiation facility were proposed and relevant comments on further enhancing the safe operation and management ofγirradiation facility were provided.

Discussions on Threshold Setting for Radioactive Liquid Effluent On-line Monitoring Alarm in Site Radwaste Treatment Facility at a NPP

RADIATION PROTECTION BULLETIN. 2017, 37(3):  28-30. 

Abstract ( 20 )  

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The upper limit of total emission concentration of radionuclides other than ³H and ¹⁴C in a coastal nuclear power plant is 1 000 Bq/L, per Technical requirements for discharge of radioactive liquid effluents from nuclear power plants (GB 14587-2011). In order toeffectively prevent and control of abnormal discharge, it requires that the threshold of on-line monitoring instrument interlock alarm should not exceed the emission concentration control value by a factor of 5. The process and matters needing attention for alarm threshold setting are, however, not provided in detailin the standard. It was discussed in this paper, with problems encountered in practical work.

Design of Monitoring and Management System for Radioactive Source of Mobile Inspection Based on EPC System Network

RADIATION PROTECTION BULLETIN. 2017, 37(3):  31-33. 

Abstract ( 20 )  

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Based on the normal monitoring and management mode for mobile radiography source, the paper presents the design ideology about monitoring and management system for mobile radiography source based onEPC System Network, in order to enhance the main responsibility of the users ofsuch sources and the design of information management system of the source based on normalized operation.

Analysis of the Reasonability about Containment Radiation Monitoring Data Characterizing the Loss of the Primary Circuit Barrier Function

RADIATION PROTECTION BULLETIN. 2017, 37(3):  34-37. 

Abstract ( 21 )  

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Emergency initial conditions (IC) andEmergency Action Level are regarded as basis of emergency classification for nuclear power plants. During an accident, the judgment of the fission product barrier function is one of the identification of emergency initial condition and action level. In this paper, according to the technical documents published by the nuclear energy institute (NEI), the reasonability about containment radiation monitoring data characterizing the loss of the primary circuit barrier function forNINGDE NPP is initially analyzed and discussed.

Introduction to EU Nuclear Emergency Laws and Regulations

RADIATION PROTECTION BULLETIN. 2017, 37(3):  38-44. 

Abstract ( 26 )  

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EU countries have long history in nuclear power development. In the aftermash of Chernobyl nuclear accident, radiationenvironmental monitoring has been enhanced by increased investment and improvedmonitoring network. At the same time, the legal building of nuclear emergency has been strengthened, forming the effective regulation system in practice. The article introduces the EU's nuclear emergency legal framework, reviews the relevant international conventions, the EU’s major nuclear emergency regulations, andthe legislation of each member country, with a view to providing reference forimproving the nuclear emergency legal system in China.