HAD40109-2019 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
HAD 401/09-2019	599	Add to Cart	4 days	(Monitoring and inspection of radioactive waste disposal facilities)	Valid

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Basic data

Standard ID: HAD 401/09-2019 (HAD401/09-2019)
Description (Translated English): (Monitoring and inspection of radioactive waste disposal facilities)
Sector / Industry: Chinese Industry Standard

HAD40109-2019: (Monitoring and inspection of radioactive waste disposal facilities)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
HA D40109-2019 (Monitoring and inspection of radioactive waste disposal facilities) Nuclear Safety Guide HA D 401/09-2019 Monitoring and inspection of radioactive waste disposal facilities Approved and released by the National Nuclear Safety Administration on March 22,:2019 National Nuclear Safety Administration Monitoring and inspection of radioactive waste disposal facilities

content

1 Introduction:::22 1:1 Purpose:::22 1:2 Scope:::22 2 Principles and objectives of monitoring and inspection:::22 2:1 Principles:::22 2:2 Objectives:::22 3 Responsibilities of waste generators and operators of disposal facilities::: 22 3:1 Responsibilities of radioactive waste generators:::22 3:2 Responsibilities of operators of radioactive waste disposal facilities:::22 4 Development and implementation of monitoring plan:::22 4:1 General requirements:::22 4:2 Monitoring of different types of disposal facilities:::22 4:3 Monitoring at different stages of disposal facilities:::22 5 Development and implementation of inspection plans::: 22 5:1 General requirements:::22 5:2 Inspection of different types of disposal facilities:::22 5:3 Inspection of different stages of disposal facilities:::22 5:4 Specific requirements for inspection of disposal facilities:::22 6 Use and management of monitoring and inspection information::: 22 6:1 Use of Monitoring and Inspection Information:::22 6:2 Management of monitoring and inspection information:::22 7 Quality Assurance:::22 7:1 Quality Assurance Documents:::22 7:2 Quality Control:::22 Glossary:::22 Appendix Monitoring Cases of Geological Disposal Facilities:::22 Monitoring and inspection of radioactive waste disposal facilities

1 Introduction

1:1 Purpose The purpose of these Guidelines is to provide guidance on the monitoring and inspection of radioactive waste disposal facilities, through monitoring and Check and confirm the effectiveness of the functions of radioactive waste disposal facilities to ensure the safety of radioactive waste disposal facilities: 1:2 Scope 1:2:1 This guideline is applicable to the operation of radioactive waste disposal facility operators for near-surface disposal facilities and geological Disposal facilities are monitored and inspected during the pre-operational phase, the operational phase, and the post-closure phase (until facility handover): Check work: Very low level radioactive waste landfill facilities can be implemented by reference: These Guidelines do not cover non-radioactive contamination Monitoring content: 1:2:2 These Guidelines do not apply to facilities that dispose of uranium and thorium mining and metallurgical wastes:

2 Principles and objectives of monitoring and inspection

2:1 Principles (1) Monitoring and inspection shall provide information for the system analysis of the entire safety process of the facility: (2) Appropriate monitoring and inspection plans should be developed according to the characteristics of the waste and the type of disposal facility: (3) Monitoring and inspection should be able to confirm whether the performance of engineered barriers and natural barriers has been compromised: (4) Public concerns should also be considered when preparing a monitoring plan: 2:2 Objectives The main objectives of monitoring and inspection are as follows: (1) Evidence that the facility complies with regulatory requirements and permit conditions; (2) Verify that the operational status of the disposal system is consistent with that described in the safety analysis; (3) To provide information for the formulation of remedial measures for engineering barriers and natural barriers; (4) Verify that the main assumptions and models used in the facility safety analysis conform to the actual situation; (5) To provide information to the database of disposal facilities, sites and surroundings; (6) Provide information to the public: Monitoring and inspection of radioactive waste disposal facilities

3 Responsibilities of waste generators and operators of disposal facilities

3:1 Responsibilities of radioactive waste generators The radioactive waste generating unit shall classify the radioactive waste generated by the unit, and classify the radioactive waste in the waste: Measure and record information on waste characteristics such as nuclide activity concentration, and ensure the accuracy and reliability of data and information: 3:2 Responsibilities of operators of radioactive waste disposal facilities The operating unit of the radioactive waste disposal facility shall assume the following responsibilities: (1) Develop and implement monitoring and inspection plans that meet regulatory requirements; (2) Verify the waste classification and measurement process of the radioactive waste generating unit to ensure that the waste conforms to the Disposal site waste acceptance criteria; (3) Periodically report the implementation of the monitoring and inspection plan and monitoring results to the regulatory authority; (4) Retain, store, maintain and manage data obtained through monitoring and inspection; (5) to ensure that the resources required for monitoring and inspection are implemented; (6) When the facility is handed over, make recommendations for the custody management of the facility after the transfer:

4 Development and implementation of a monitoring plan

4:1 General requirements 4:1:1 The monitoring plan should include disposal facility monitoring and environmental monitoring to assess public exposure and environmental impacts: 4:1:2 The development of the monitoring plan shall fully consider the requirements of the safety analysis of the facility, and be able to compare the monitoring results with the The predictions made by the safety whole process system analysis are compared: 4:1:3 The monitoring plan should focus on areas where the consequences of component failure or failure may affect safety: areas and areas where facility anomalies are easily detected: 4:1:4 The monitoring plan should be optimally designed, and the cost and benefit analysis of monitoring should be considered in this process: 4:1:5 The formulation of monitoring plan usually includes the following work contents: (1) Select and demonstrate the parameters that are of great significance to the system analysis of the entire safety process of the facility; (2) Determine the scope and objectives of the monitoring plan; (3) Establish a monitoring plan evaluation and revision system; Monitoring and inspection of radioactive waste disposal facilities (4) Selection of measurement methods and equipment; (5) Selection of measurement location and object; (6) Selection of monitoring time and frequency; (7) Establish quality control requirements and measures; (8) Instructions for the use of monitoring data; (9) Establish management norms and monitoring results reporting system; (10) Evaluation of monitoring results; (11) Establish an information management system for monitoring data: 4:1:6 The key technical factors that should be considered when developing a monitoring plan include: (1) The design capacity of the disposal facility; (2) The characteristics of the waste and its packaging container; (3) Facility type and design parameters; (4) Site characteristics and engineering barrier characteristics; (5) The stage of the facility: The above factors affect the potential release of radionuclides from disposal facilities, the route of release and the amount of release, contributing to the To identify specific monitoring objectives and justify monitoring plans: 4:1:7 The purpose of the monitoring plan in the pre-operation stage is to conduct a background survey to obtain the background value: The purpose of the site characterization survey is to determine the physical and socio-environmental characteristics of the disposal facility: If the potential presence of radionuclides (especially long-lived nuclear radioactive contamination, the monitoring scope should be expanded, the radioactive contamination area and degree of contamination should be determined, and the source of the contamination should be analyzed: 4:1:8 The monitoring activities carried out shall not degrade the performance of the barrier: 4:1:9 The measurement points or sampling points corresponding to various monitoring items in the monitoring plan should have sufficient Appearance and meet the relevant standard requirements: 4:1:10 The monitoring plan should be developed in the pre-operational phase of the disposal facility and continuously updated during the operational phase of the facility: 4:1:11 In the monitoring plan, consideration should be given to setting up parallel samples, third-party sampling and testing, etc: method to test the reliability of monitoring data: 4:1:12 After the closure of the disposal facility, in order to assess the overall performance of the facility and the potential of the facility to the public and the environment impact, post-shutdown monitoring should be implemented: Monitoring and inspection of radioactive waste disposal facilities 4:1:13 The monitoring plan should include necessary information disclosure content: 4:1:14 If the monitoring results indicate that there are unexpected changes affecting safety and the environment, Carry out special monitoring for changes, and determine whether it is necessary to revise the safety status assessment or environmental impact assessment report to and whether the monitoring plan needs to be modified or action taken: 4:2 Monitoring of different types of disposal facilities 4:2:1 Near-surface disposal facilities The wastes disposed of by near-surface disposal facilities are generally low-level radioactive wastes and The monitoring plan for near-surface disposal facilities mainly includes the following: Disposal facility monitoring, waste monitoring (operational phase only) and environmental radiation monitoring: Disposal facility monitoring Including site radiation monitoring, effluent monitoring, barrier monitoring, control area access monitoring, etc:; The relevant items to verify whether the waste package meets the acceptance standards shall be monitored, and the selected monitoring items shall be easy to implement (For example, the dose rate on the surface of the waste package); the scope and items of environmental radiation monitoring shall be implemented in accordance with relevant standards: near the ground The purpose of monitoring at surface disposal facilities is to provide data support for verifying the integrity of the disposal system: 4:2:2 Geological disposal facilities The wastes disposed of by geological disposal facilities are generally high-level radioactive wastes and cannot meet the requirements of near-surface intermediate level radioactive waste required by the facility permit: The monitoring plan for geological disposal facilities mainly includes disposal facilities: facility monitoring, waste monitoring (only for the operational phase) and environmental radiation monitoring: Considering geological disposal facilities The particularity of disposal facility monitoring should be based on the barrier characteristics of the facility and the disposal process to formulate monitoring items; waste Monitoring is to monitor the relevant items to verify whether the waste package meets the acceptance standards: The selected monitoring items should be Ease of implementation (e:g: waste pack surface dose rate); early release of waste contained in geological disposal facilities to the environment It is extremely unlikely, so the environmental radiation monitoring project can be simplified and designed according to the characteristics of the site at each stage: meter, focusing on the measurement of radionuclides in certain environmental media (such as groundwater), but should also satisfy the public The need for safety and attention: The purpose of monitoring geological disposal facilities is to provide data support for verifying the integrity of the disposal system: Refer to the appendix for monitoring reference cases of geological disposal facilities: 4:3 Monitoring at different stages of disposal facilities The monitoring purposes of different stages of disposal facilities are shown in Figure 1, and the main monitoring activities include: (1) Obtain the background value; Monitoring and inspection of radioactive waste disposal facilities 4:3:2 Monitoring during operation phase 4:3:2:1 The main purposes of carrying out monitoring in the operation phase include: (1) To provide performance data of disposal facilities, to confirm the performance of disposal systems, and to improve safety analysis; (2) To provide necessary information for checking whether the effluent treatment and control system is operating normally; (3) Provide early warning and alarm information for running deviation; (4) Provide early warning of the release of radionuclides to the environment in disposal facilities; (5) Provide data on the discharge of radionuclides to the environment for estimating the environmental radiation caused by the discharge change and public exposure: 4:3:2:2 The monitoring plan during the operation phase should focus on the radionuclide release related to the operation of the disposal facility: possible and as part of a safety analysis: 4:3:2:3 Operational phase monitoring plan includes shutdown monitoring, disposal facility stops accepting waste until facility shutdown During the previous shutdown period, the operating unit shall implement the shutdown monitoring plan, which may be based on the monitoring plan during the operation phase: Develop a shutdown monitoring plan according to the needs of system analysis of the entire safety process during the shutdown period: 4:3:2:4 Emergency monitoring is to provide data support for mitigating the consequences of the accident or taking intervention actions: It is only applicable to run phase: The disposal facility operator shall formulate an emergency monitoring plan before the facility is put into operation: Make emergency arrangements for hypothetical events that can occur, including monitoring arrangements, personnel arrangements, procedures development, and equipment allocation: In order to maintain emergency monitoring capabilities, drills should be carried out on a regular basis: Emergency monitoring should be able to provide timely data to enable rapid response and notification in emergency situations: 4:3:3 Post-Close Phase Monitoring 4:3:3:1 In order to evaluate the performance and environmental impact after the facility is closed, the operating organization shall A monitoring plan for the post-closure phase is established, which will be implemented after the facility is closed and before handover: The main purposes of conducting post-closure phase monitoring include: (1) Provide performance data of disposal facilities to confirm the performance of disposal systems; (2) Provide early warning of releases of radionuclides to the environment in disposal facilities; (3) Provide data support for subsequent decision-making (such as changing the control method, changing the monitoring range and frequency): 4:3:3:2 Monitoring in the post-closure phase focuses on the detection of radioactive material in the environment that may originate from the disposal facility quality and maintain monitoring and maintenance capabilities: The main factors that determine the scope, scope and frequency of monitoring in the post-closure phase include: Monitoring and inspection of radioactive waste disposal facilities (1) The type of disposal facility and its degree of potential hazard over time, depending on the presence or absence of long-lived radionuclides and their activities; (2) Performance of disposal facilities: 4:3:3:3 Organized control after closure of a disposal facility can be active or passive, active organized Controls include monitoring of radionuclide concentrations in the environment and the performance and integrity of barriers, passive organized controls Controls include limiting the use of the site and setting up site identification, and the monitoring plan in the post-closure phase should include relevant equipment information on who is responsible for the implementation and changes in the organizational control model:

5 Development and implementation of inspection plans

5:1 General requirements 5:1:1 The purpose of the inspection plan is to control the condition of the disposal facility to verify the safety barriers: Integrity and rapid identification of conditions that may lead to the migration or release of radionuclides to the environment: The inspection also includes Review or review of facility operating records: The inspection plan is mainly applicable to the operation period and is generally implemented through periodic inspections: 5:1:2 The operating organization should start to develop an inspection plan during the construction phase of the disposal facility, and according to the site conditions Regularly updated with changes in operating conditions, the main elements of the inspection plan include: (1) A description of the site and surrounding area; (2) a description of the components of the disposal facility and the environment in which they are used; (3) Type and frequency of facility inspections; (4) Facility inspection procedures; (5) Facility maintenance and periodic test procedures; (6) Inspection records and reporting requirements; (7) Quality assurance: 5:2 Inspection of different types of disposal facilities 5:2:1 Near-surface disposal facilities The inspection of near-surface disposal facilities mainly includes facility inspection, system performance inspection (operation stage), equipment inspection, etc: Equipment performance and validity period inspection (operation phase), auxiliary system function inspection and facility surrounding environment inspection, etc: For near-surface disposal facilities, the inspection programme should begin prior to operation and continue through the post-closure phase until ......

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