Regulations and Guidelines, etc.

ALL
Regulations / Legislation
Guidelines / Notifications
Governmental Report
Leaflets / Brochures
Annual Reports

About measures to prevent ionizing radiation hazards related to decontamination work

Ordinance on Prevention of Ionizing Radiation Hazards (Ministry of Health, Labour and Welfare Ordinance No. 89 of 8 July 2013) PDF 698KB

Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works (Ministry of Health, Labour and Welfare Ordinance No. 57 of 12 April 2013) PDF 151KB

Guidelines on Occupational Safety and Health Management at the TEPCO Fukushima Daiichi Nuclear Power Plant (Amendment: Labour Standards Bureau Notification No. 0520-8 of May 20, 2025) PDF 553KB

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Work (Amendment: Labour Standards Bureau Notification No. 0427-6 of April 27, 2023) PDF 448KB

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate (Amendment: Labour Standards Bureau Notification No. 0427-6 of April 27, 2023) PDF 208KB

Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accident-derived Waste Disposal (Amendment: Labour Standards Bureau Notification No. 0427-6 of April 27, 2023) PDF 334KB

Feb 18, '26

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Station 13th Edition (Fiscal Year of 2025)
PDF 2.7MB
Regulations and Guidelines, etc.Annual Reports
Nov 7, '25

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO’s Fukushima Daiichi Nuclear Power Station and employers of decontamination workers in Fukushima Prefecture (for 2024) PDF 465KB

Governmental Report
Mar 6, '25

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant
12th Edition (Fiscal Year of 2024) PDF 2.5MB
Annual Reports
Dec 6, '24

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO’s Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2023) PDF 449KB

Governmental Report
Mar 4, '24

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant
11th Edition (Fiscal Year of 2023) PDF 3.0MB
Annual Reports
Sep 13, '23

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO’s Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2022) PDF 839KB
Governmental Report
Mar 7, '23

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant
10th Edition (Fiscal Year of 2022) PDF 2.4MB
Annual Reports
Nov 16, '22

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO's Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2021) PDF 395KB
Governmental Report
Mar 15, '22

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant
9th Edition (Fiscal Year of 2021) PDF 3.3MB
Annual Reports
Sep 28, '21

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO's Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2020) PDF 703KB
Governmental Report
Mar 12, '21

The Amended Regulation on Prevention of Ionizing Radiation Hazards comes into effect as of April 1, 2021. PDF 681KB
Leaflets/Brochures
Mar 12, '21

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant
8th Edition (Fiscal Year of 2020) PDF 4,110KB
Annual Reports
Jun 30, '20

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO's Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2019) PDF 323KB
Governmental Report
Jan 31, '20

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 7th Edition (Fiscal Year of 2019) PDF 6,908KB
Governmental Report
Jan 31, '20

Executive Summary PDF 557KB
Governmental Report
May 21, '19

Ensuring occupational safety and health of specified skilled foreign workers for the TEPCO Fukushima Daiichi Nuclear Power Plant PDF 401KB
Governmental Report
Mar 29, '19

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2018) PDF 1,635KB
Governmental Report
Jan 31, '19

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 6th Edition (Fiscal Year of 2018) PDF 5,089KB
Governmental Report
Jan 31, '19

Executive Summary PDF 149KB
Governmental Report
Sep 14, '18

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (Jan. – June 2018) PDF 1,401KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Feb 22, '18

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (in 2017) PDF 753KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Jan 31, '18

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 5th Edition (Fiscal Year of 2017) PDF 908KB
Governmental Report
Jan 31, '18

Executive Summary PDF 269KB
Governmental Report
Jan 30, '18

Revision of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works PDF 109KB
Guidelines / Notifications
Sep 11, '17

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (January to June 2017) PDF 2,496KB
Governmental Report
Apr 18, '17

Measures for the Prevention from Radiation Hazards due to the Exposure of the Eye Lens in Radiation Works (Occupational Safety and Health Department Notification No. 0418-1) PDF 109KB
Guidelines / Notifications
Mar 6, '17

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (in 2016) PDF 2,590KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Jan 31, '17

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 4th Edition (Fiscal Year of 2016) PDF 1,081KB
Governmental Report
Jan 31, '17

Executive Summary PDF 2,781KB
Governmental Report
Sep 20, '16

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and decontamination workers in Fukushima Prefecture (from Jan. to June 2016) PDF 2,297KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Aug 19, '16

Result of review at the "review meeting on occupational/non-occupational ionizing radiation disease" and approval as occupational disease/injury PDF 151KB
Governmental Report
Apr 13, '16

Results of supervision and instruction activities for employers of decommissioning and decontamination workers at the TEPCO Fukushima Daiichi Nuclear Power Plant (in 2015) PDF 2,251KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Jan 31, '16

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 3rd Edition (Fiscal Year of 2015) PDF 31,391KB
Governmental Report
Nov 20, '15

Results of supervision and instruction activities for employers of workers engaged in decommissioning of the TEPCO Fukushima Daiichi Nuclear Power Plant (from 11 March 2011 to 30 September 2015) PDF 1,163KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Oct 30, '15

Measures for the Prevention from Radiation Hazards due to the Exposure of the Eye Lens in Radiation Works (Occupational Safety and Health Department Notification No. 0418-1) PDF 403KB
Decontamination/RemediationGuidelines / Notifications
Oct 20, '15

Result of review at the "review meeting on occupational /non-occupational ionizing radiation disease" and approval as occupational disease/injury PDF 109KB
Governmental Report
Oct 9, '15

Results of supervision and instruction activities for employers of decontamination workers (from Jan. to June 2015) PDF 397KB
Decontamination/RemediationGovernmental Report
Aug 31, '15

Opinions on the Draft Ministerial Ordinance to Revise Part of the Ordinance on Prevention of Ionizing Radiation Hazards PDF 362KB
Regulations / Legislation
Aug 31, '15

Enforcement of the Ministerial Ordinance for Partial Revision of the Ordinance on Prevention of Ionizing Radiation Hazards and Other Related Regulations (Labour Standards Bureau Notification No. 0831-13) PDF 96KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Aug 31, '15

Guideline on Revision of Part of the Guidelines on Safety and Health Education for Those Who Are Currently Engaged in Dangerous or Harmful Operations (Labour Standards Bureau Notification No. 0831-6) PDF 155KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Aug 31, '15

Formulation of the Guideline: “Guidelines on Maintaining and Improving Health of Emergency Workers at Nuclear Facilities, etc.” (Labour Standards Bureau Notification No. 0831-10) PDF 155KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Aug 26, '15

Formulation of the “Guidelines on occupational safety and health management at the TEPCO Fukushima Daiichi Nuclear Power Plant” PDF 427KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
May 1, '15

Expert Meeting on the Long-term Healthcare etc. of Workers at the TEPCO Fukushima Daiichi Nuclear Power Plant PDF 653KB
Governmental Report
Apr '15

More thorough implementation of ensuring working conditions and controlling radiation exposure, etc. of workers engaged in decontamination and related works. PDF 134KB
Leaflets/Brochures
Mar 31, '15

Response and Action Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to TEPCO's Fukushima aiichi Nuclear Power Plant Accident 2nd Edition (Fiscal Year of 2014) PDF 3,184KB
Governmental Report
Mar 5, '15

Results of supervision/instructions to employers of decontamination workers (July - December 2014)
Decontamination/RemediationGovernmental Report
Feb '15

Engaging in decontamination and related works by young people below the age of 18 (minors) is prohibited. PDF 221KB
Leaflets/Brochures
Nov 18, '14

Revision of Guidelines Such as That on Prevention of Radiation Hazards for Workers Engaged in Decontamination and Related Works
Guidelines / Notifications
Dec 26, '13

Revision of Guideline on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works.
[Labour Standards Bureau Notification No.1226-21]
Guidelines / Notifications
Dec 26, '13

Organization for Registration Control of Radiation Exposure Doses for Decontamination and Related Works.
[Labour Standards Bureau Notification No.1226-17]
Guidelines / Notifications
Nov 15, '13

Organization for Registration Control of Radiation Exposure Doses for Decontamination and Related Works.
[Labour Standards Bureau Notification No.1115-4]
Guidelines / Notifications
Nov 02, '13

Response and Action Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection for Workers Involved in the TEPCO Fukushima Daiichi Nuclear Power Plant Accident 1st Edition (Fiscal Year of 2013). PDF 1,896KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Apr 12, '13

Table for Replacement of Terms of the Ordinance on Prevention of Ionizing Radiation Hazards (Ministry of Labour Ordinance No. 41 of 1972). PDF 166KB
Decontamination/RemediationRegulations / Legislation
Apr 12, '13

Comparison of Current and Revised Provisions of the Ministerial Ordinance to Revise Part of the Ordinance on Prevention of Ionizing Radiation Hazards, etc. PDF 287KB
Decontamination/RemediationRegulations / Legislation
Apr 12, '13

Revision of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works (Labour Standards Bureau Notification No. 0412-6) PDF 24KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Formulation of the Guideline on Prevention of Radiation Hazards for Workers Engaged in Nuclear Accident-Derived Wastes Disposal (Labour Standards Bureau Notification No. 0412-2) PDF 39KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accident-derived Waste Disposal. PDF 52KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accident-derived Waste Disposal. PDF 718KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Enforcement of the partially revised Ordinance on Prevention of Ionizing Radiation Hazards, Labour Standard Bureau No. 0412-1. PDF 405KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Pamphlet on works related to disposal of accident-derived waste (for employers). PDF 696KB
Decontamination/RemediationLeaflets/Brochures
Feb 14, '13

Overview of the Expert Meeting’s Report on the Prevention of Radiation Hazards for Workers Engaged in the Disposal of Decontamination Waste. PDF 821KB
Decontamination/RemediationGovernmental Report
Feb 14, '13

Report by the Expert Meeting on Radiological Protection for Disposal Works of Decontamination-Removed Materials. PDF 598KB
Decontamination/RemediationGovernmental Report
Dec 26, '12

Questions Posed in the Past on Ionizing Radiation Ordinance for Decontamination and Guidelines and Answers to Those Questions (Industrial Health Division Notification No. 1226-1)
Decontamination/RemediationGuidelines / Notifications
Aug 10, '12

Re: Instructions to enhance actions for safety and health management measures for radiation works and emergency works at nuclear facilities. PDF 1,056KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Jun 15, '12

Enforcement of the ministerial ordinance for amendment to part of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works (Labour Standards Bureau Notification No. 0615-7) PDF 242KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Comparison of current and revised provisions on methods, criteria, and classifications of works for decontaminating soil specified by the Minister of Health, Labour and Welfare pursuant to the provision of Paragraph 6, Article 2 and other Articles and Paragraphs of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works. PDF 147KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Revision of special education rules for decontamination works (Comparison of Current and Revised Provisions). PDF 160KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Comparison of the Current and Revised Provisions of the Ministerial Ordinance to Revise Part of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes, and Related Works, Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake. PDF 445KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate.
Guidelines / Notifications
Jun 15, '12

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works. PDF 733KB
Decontamination/RemediationGuidelines / Notifications
Jun 15, '12

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate. PDF 223KB
Decontamination/RemediationGuidelines / Notifications
Jun 15, '12

Guidelines on Prevention of Radiation Hazards for Decontamination Works(Overview). PDF 173KB
Decontamination/RemediationGuidelines / Notifications
Jun 15, '12

Pamphlet on decontamination works (for employers). PDF 623KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Leaflet on works under a designated dose rate (for employers). PDF 405KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Pamphlet on decontamination works (for workers). PDF 1,193KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Leaflet on works under a designated dose rate (for workers). PDF 681KB
Decontamination/RemediationLeaflets/Brochures
Apr 27, '12

Overview of the second report from the Expert Meeting on Radiation Protection for Decontamination and Related Works. PDF 346KB
Decontamination/RemediationGovernmental Report
Apr 27, '12

Expert Meeting on Radiological Protection for Decontamination and Related Works The Second Report. PDF 361KB
Decontamination/RemediationGovernmental Report
Dec 22, '11

Enforcement of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works (Labour Standards Bureau Notification No. 1222-7) PDF 260KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Methodology, criteria and classification (Ordinance of MHLW No.468, 2011). PDF 140KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Provision for the special education for the decontamination, etc. (Ordinance of MHLW No.469, 2011). PDF 171KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Ionizing Radiation Ordinance for Decontamination (Ordinance of MHLW No.152, 2011). PDF 250KB
Decontamination/RemediationRegulations / Legislation
Dec 16, '11

Enforcement of the Ministerial Ordinance on Repeal of the Ministerial Ordinance on Exemption of the Ordinance on Prevention of Ionizing Radiation Hazards in Response to the Situation Resulting from the Tohoku-Pacific Ocean Earthquake in 2011 (Labour Standards Bureau Notification No.1216-1) PDF 55KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Dec 12, '11

Overview of the Proposed Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related works (tentative title). PDF 341KB
Decontamination/RemediationRegulations / Legislation
Nov 28, '11

Overview of Report from the Expert Meeting on Radiological Protection for Decontamination and Related Works. PDF 169KB
Decontamination/RemediationGovernmental Report
Nov 28, '11

Report from the Expert Meeting on Radiological Protection for Decontamination and Related Works. PDF 565KB
Decontamination/RemediationGovernmental Report
Nov 24, '11

Re: Thorough implementation of measures to prevent industrial accidents in different works toward recovering from the accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant.
[Occupational Safety and Health Department Notification No. 1124-2]
Guidelines / Notifications
Nov 21, '11

Overview of the outline of the draft Ministerial Ordinance for abolishment of exemption in the Ordinance on Prevention of Ionizing Radiation Hazards in Response to the Situation resulting from the Tohoku - Pacific Ocean Earthquake in 2011. PDF 144KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Oct 24, '11

Overview of the outline of the draft Ministerial Ordinance for partial revision of exemption in the Ordinance on Prevention of Ionizing Radiation Hazards in response to the situation resulting from the Tohoku - Pacific Ocean Earthquake in 2011. PDF 159KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Oct 11, '11

Guidelines on Maintaining and Improving Health of Emergency Workers at the TEPCO Fukushima Daiichi Nuclear Power Plant (Overview). PDF 104KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Oct 11, '11

Guidelines on Maintaining and Improving Health of Emergency Workers at the TEPCO Fukushima Daiichi Nuclear Power Plant. PDF 119KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Sep 30, '11

Draft ministerial ordinance for revision of the Ordinance on Prevention of Ionizing Radiation Hazards. PDF 126KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Sep 26, '11

Expert meeting on the long-term health care of workers at the TEPCO Fukushima Daiichi Nuclear Power Plant (Report Overview). PDF 121KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Sep 26, '11

Report from the expert meeting on the long-term health care of workers at the TEPCO Fukushima Daiichi Nuclear Power Plant. PDF 222KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Sep 09, '11

Re: Radiation hazard preventive measures for decontamination workers based on “Basic Policy for Emergency Response on Decontamination Work” and “Guidelines for Municipal Decontamination Work”.
[Occupational Safety and Health Department Notification No. 0909-1]
Guidelines / Notifications
Jun 23, '11

Interim policy on handling water and sewage treatment by-products and disaster wastes in which radioactive substances are detected.
[Occupational Safety and Health Department Notification No. 0623-1]
Guidelines / Notifications
Jun 23, '11

Interim policy on handling water and sewage treatment by-products and disaster wastes in which radioactive substances are detected.
[Occupational Safety and Health Department Notification No. 0623-2]
Guidelines / Notifications
Jun 21, '11

Re: Actions to be taken for the works in which interpretation and application of the “Permission standard on temporary entry to the restricted area” (entry for the public interest) is used.
[Occupational Safety and Health Department Notification No. 0621-1]
Guidelines / Notifications
Jun 21, '11

Re: Actions to be taken for the works in which interpretation and application of the “Permission standard on temporary entry to the restricted area” (entry for the public interest) is used.
[Occupational Safety and Health Department Notification No. 0621-2]
Guidelines / Notifications
May 24, '11

Re: Actions to be taken when the employers continue their business at the workplaces as a special case in the deliberate evacuation area.
[Occupational Safety and Health Department Notification No. 0524-1]
Guidelines / Notifications
May 17, '11

Re: “An interim policy on handling sewage treatment by-products in Fukushima Prefecture”.
[Occupational Safety and Health Department Notification No. 0517-1]
Guidelines / Notifications
May 17, '11

Re: Actions to be taken in the areas within a 20-kilometer radius from the TEPCO Fukushima Daiichi Nuclear Power Plant.
[Occupational Safety and Health Department Notification No. 0517-3]
Guidelines / Notifications
May 11, '11

Re: Action for works handling disaster waste in Fukushima Prefecture.
[Occupational Safety and Health Department Notification No. 0511-1]
Guidelines / Notifications
Apr 28, '11

Re: Guidance about the adiation exposure dose during later radiation works other than emergency works for the orkers who had been engaged in emergency works.
[Labour Standards Bureau Notification No. 0428-1]
Guidelines / Notifications
Mar 15, '11

Re: Enforcement of the Ministerial ordinance on exemption of the Ordinance on Prevention of Ionizing Radiation Hazards in response to the situation resulting from the Tohoku-Pacific Ocean Earthquake in 2011.
[Labour Standards Bureau Notification No. 0315-7]
Guidelines / Notifications
Mar 30, '01

Regarding the enforcement of the ministerial ordinance to revise part of the Ordinance on Industrial Safety and Health，and the Ordinance on Prevention of Ionizing Radiation Hazards
[Labour Standards Bureau Notification No. 253] PDF 305KB
Guidelines / Notifications

About measures to prevent ionizing radiation hazards related to decontamination work

Ordinance on Prevention of Ionizing Radiation Hazards (Ministry of Health, Labour and Welfare Ordinance No. 89 of 8 July 2013) PDF 698KB

Aug 31, '15

Opinions on the Draft Ministerial Ordinance to Revise Part of the Ordinance on Prevention of Ionizing Radiation Hazards PDF 362KB
Regulations / Legislation
Aug 31, '15

Enforcement of the Ministerial Ordinance for Partial Revision of the Ordinance on Prevention of Ionizing Radiation Hazards and Other Related Regulations (Labour Standards Bureau Notification No. 0831-13) PDF 96KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Apr 12, '13

Table for Replacement of Terms of the Ordinance on Prevention of Ionizing Radiation Hazards (Ministry of Labour Ordinance No. 41 of 1972). PDF 166KB
Decontamination/RemediationRegulations / Legislation
Apr 12, '13

Comparison of Current and Revised Provisions of the Ministerial Ordinance to Revise Part of the Ordinance on Prevention of Ionizing Radiation Hazards, etc. PDF 287KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Enforcement of the ministerial ordinance for amendment to part of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works (Labour Standards Bureau Notification No. 0615-7) PDF 242KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Comparison of current and revised provisions on methods, criteria, and classifications of works for decontaminating soil specified by the Minister of Health, Labour and Welfare pursuant to the provision of Paragraph 6, Article 2 and other Articles and Paragraphs of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works. PDF 147KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Revision of special education rules for decontamination works (Comparison of Current and Revised Provisions). PDF 160KB
Decontamination/RemediationRegulations / Legislation
Jun 15, '12

Comparison of the Current and Revised Provisions of the Ministerial Ordinance to Revise Part of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes, and Related Works, Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake. PDF 445KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Enforcement of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works (Labour Standards Bureau Notification No. 1222-7) PDF 260KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Methodology, criteria and classification (Ordinance of MHLW No.468, 2011). PDF 140KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Provision for the special education for the decontamination, etc. (Ordinance of MHLW No.469, 2011). PDF 171KB
Decontamination/RemediationRegulations / Legislation
Dec 22, '11

Ionizing Radiation Ordinance for Decontamination (Ordinance of MHLW No.152, 2011). PDF 250KB
Decontamination/RemediationRegulations / Legislation
Dec 16, '11

Enforcement of the Ministerial Ordinance on Repeal of the Ministerial Ordinance on Exemption of the Ordinance on Prevention of Ionizing Radiation Hazards in Response to the Situation Resulting from the Tohoku-Pacific Ocean Earthquake in 2011 (Labour Standards Bureau Notification No.1216-1) PDF 55KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Dec 12, '11

Overview of the Proposed Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related works (tentative title). PDF 341KB
Decontamination/RemediationRegulations / Legislation
Nov 21, '11

Overview of the outline of the draft Ministerial Ordinance for abolishment of exemption in the Ordinance on Prevention of Ionizing Radiation Hazards in Response to the Situation resulting from the Tohoku - Pacific Ocean Earthquake in 2011. PDF 144KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Oct 24, '11

Overview of the outline of the draft Ministerial Ordinance for partial revision of exemption in the Ordinance on Prevention of Ionizing Radiation Hazards in response to the situation resulting from the Tohoku - Pacific Ocean Earthquake in 2011. PDF 159KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation
Sep 30, '11

Draft ministerial ordinance for revision of the Ordinance on Prevention of Ionizing Radiation Hazards. PDF 126KB
TEPCO Fukushima Daiichi NPPRegulations / Legislation

About measures to prevent ionizing radiation hazards related to decontamination work

Guidelines on Occupational Safety and Health Management at the TEPCO Fukushima Daiichi Nuclear Power Plant (Amendment: Labour Standards Bureau Notification No. 0520-8 of May 20, 2025) PDF 553KB

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Work (Amendment: Labour Standards Bureau Notification No. 0427-6 of April 27, 2023) PDF 448KB

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate (Amendment: Labour Standards Bureau Notification No. 0427-6 of April 27, 2023) PDF 208KB

Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accident-derived Waste Disposal (Amendment: Labour Standards Bureau Notification No. 0427-6 of April 27, 2023) PDF 334KB

Jan 30, '18

Revision of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works PDF 109KB
Guidelines / Notifications
Apr 18, '17

Measures for the Prevention from Radiation Hazards due to the Exposure of the Eye Lens in Radiation Works (Occupational Safety and Health Department Notification No. 0418-1) PDF 109KB
Guidelines / Notifications
Oct 30, '15

Measures for the Prevention from Radiation Hazards due to the Exposure of the Eye Lens in Radiation Works (Occupational Safety and Health Department Notification No. 0418-1) PDF 403KB
Decontamination/RemediationGuidelines / Notifications
Aug 31, '15

Guideline on Revision of Part of the Guidelines on Safety and Health Education for Those Who Are Currently Engaged in Dangerous or Harmful Operations (Labour Standards Bureau Notification No. 0831-6) PDF 155KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Aug 31, '15

Formulation of the Guideline: “Guidelines on Maintaining and Improving Health of Emergency Workers at Nuclear Facilities, etc.” (Labour Standards Bureau Notification No. 0831-10) PDF 155KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Aug 26, '15

Formulation of the “Guidelines on occupational safety and health management at the TEPCO Fukushima Daiichi Nuclear Power Plant” PDF 427KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Nov 18, '14

Revision of Guidelines Such as That on Prevention of Radiation Hazards for Workers Engaged in Decontamination and Related Works
Guidelines / Notifications
Dec 26, '13

Revision of Guideline on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works.
[Labour Standards Bureau Notification No.1226-21]
Guidelines / Notifications
Dec 26, '13

Organization for Registration Control of Radiation Exposure Doses for Decontamination and Related Works.
[Labour Standards Bureau Notification No.1226-17]
Guidelines / Notifications
Nov 15, '13

Organization for Registration Control of Radiation Exposure Doses for Decontamination and Related Works.
[Labour Standards Bureau Notification No.1115-4]
Guidelines / Notifications
Apr 12, '13

Revision of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works (Labour Standards Bureau Notification No. 0412-6) PDF 24KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Formulation of the Guideline on Prevention of Radiation Hazards for Workers Engaged in Nuclear Accident-Derived Wastes Disposal (Labour Standards Bureau Notification No. 0412-2) PDF 39KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accident-derived Waste Disposal. PDF 52KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accident-derived Waste Disposal. PDF 718KB
Decontamination/RemediationGuidelines / Notifications
Apr 12, '13

Enforcement of the partially revised Ordinance on Prevention of Ionizing Radiation Hazards, Labour Standard Bureau No. 0412-1. PDF 405KB
Decontamination/RemediationGuidelines / Notifications
Dec 26, '12

Questions Posed in the Past on Ionizing Radiation Ordinance for Decontamination and Guidelines and Answers to Those Questions (Industrial Health Division Notification No. 1226-1)
Decontamination/RemediationGuidelines / Notifications
Aug 10, '12

Re: Instructions to enhance actions for safety and health management measures for radiation works and emergency works at nuclear facilities. PDF 1,056KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Jun 15, '12

Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate.
Guidelines / Notifications
Jun 15, '12

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works. PDF 733KB
Decontamination/RemediationGuidelines / Notifications
Jun 15, '12

Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate. PDF 223KB
Decontamination/RemediationGuidelines / Notifications
Jun 15, '12

Guidelines on Prevention of Radiation Hazards for Decontamination Works(Overview). PDF 173KB
Decontamination/RemediationGuidelines / Notifications
Nov 24, '11

Re: Thorough implementation of measures to prevent industrial accidents in different works toward recovering from the accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant.
[Occupational Safety and Health Department Notification No. 1124-2]
Guidelines / Notifications
Oct 11, '11

Guidelines on Maintaining and Improving Health of Emergency Workers at the TEPCO Fukushima Daiichi Nuclear Power Plant (Overview). PDF 104KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Oct 11, '11

Guidelines on Maintaining and Improving Health of Emergency Workers at the TEPCO Fukushima Daiichi Nuclear Power Plant. PDF 119KB
TEPCO Fukushima Daiichi NPPGuidelines / Notifications
Sep 09, '11

Re: Radiation hazard preventive measures for decontamination workers based on “Basic Policy for Emergency Response on Decontamination Work” and “Guidelines for Municipal Decontamination Work”.
[Occupational Safety and Health Department Notification No. 0909-1]
Guidelines / Notifications
Jun 23, '11

Interim policy on handling water and sewage treatment by-products and disaster wastes in which radioactive substances are detected.
[Occupational Safety and Health Department Notification No. 0623-1]
Guidelines / Notifications
Jun 23, '11

Interim policy on handling water and sewage treatment by-products and disaster wastes in which radioactive substances are detected.
[Occupational Safety and Health Department Notification No. 0623-2]
Guidelines / Notifications
Jun 21, '11

Re: Actions to be taken for the works in which interpretation and application of the “Permission standard on temporary entry to the restricted area” (entry for the public interest) is used.
[Occupational Safety and Health Department Notification No. 0621-1]
Guidelines / Notifications
Jun 21, '11

Re: Actions to be taken for the works in which interpretation and application of the “Permission standard on temporary entry to the restricted area” (entry for the public interest) is used.
[Occupational Safety and Health Department Notification No. 0621-2]
Guidelines / Notifications
May 24, '11

Re: Actions to be taken when the employers continue their business at the workplaces as a special case in the deliberate evacuation area.
[Occupational Safety and Health Department Notification No. 0524-1]
Guidelines / Notifications
May 17, '11

Re: “An interim policy on handling sewage treatment by-products in Fukushima Prefecture”.
[Occupational Safety and Health Department Notification No. 0517-1]
Guidelines / Notifications
May 17, '11

Re: Actions to be taken in the areas within a 20-kilometer radius from the TEPCO Fukushima Daiichi Nuclear Power Plant.
[Occupational Safety and Health Department Notification No. 0517-3]
Guidelines / Notifications
May 11, '11

Re: Action for works handling disaster waste in Fukushima Prefecture.
[Occupational Safety and Health Department Notification No. 0511-1]
Guidelines / Notifications
Apr 28, '11

Re: Guidance about the adiation exposure dose during later radiation works other than emergency works for the orkers who had been engaged in emergency works.
[Labour Standards Bureau Notification No. 0428-1]
Guidelines / Notifications
Mar 15, '11

Re: Enforcement of the Ministerial ordinance on exemption of the Ordinance on Prevention of Ionizing Radiation Hazards in response to the situation resulting from the Tohoku-Pacific Ocean Earthquake in 2011.
[Labour Standards Bureau Notification No. 0315-7]
Guidelines / Notifications
Mar 30, '01

Regarding the enforcement of the ministerial ordinance to revise part of the Ordinance on Industrial Safety and Health，and the Ordinance on Prevention of Ionizing Radiation Hazards
[Labour Standards Bureau Notification No. 253] PDF 305KB
Guidelines / Notifications

Nov 7, '25

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO’s Fukushima Daiichi Nuclear Power Station and employers of decontamination workers in Fukushima Prefecture (for 2024) PDF 465KB

Governmental Report
Dec 6, '24

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO’s Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2023) PDF 449KB
Governmental Report
Sep 13, '23

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO’s Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2022) PDF 839KB
Governmental Report
Nov 16, '22

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO's Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2021) PDF 395KB
Governmental Report
Sep 28, '21

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO's Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2020) PDF 703KB
Governmental Report
Jun 30, '20

Results of supervision and instruction activities for employers of decommissioning workers at TEPCO's Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2019) PDF 323KB
Governmental Report
Jan 31, '20

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 7th Edition (Fiscal Year of 2019) PDF 6,908KB
Governmental Report
Jan 31, '20

Executive Summary PDF 557KB
Governmental Report
May 21, '19

Ensuring occupational safety and health of specified skilled foreign workers for the TEPCO Fukushima Daiichi Nuclear Power Plant PDF 401KB
Governmental Report
Mar 29, '19

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (for 2018) PDF 1,635KB
Governmental Report
Jan 31, '19

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 6th Edition (Fiscal Year of 2018) PDF 5,089KB
Governmental Report
Jan 31, '19

Executive Summary PDF 149KB
Governmental Report
Sep 14, '18

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (Jan. – June 2018) PDF 1,401KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Feb 22, '18

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (in 2017) PDF 753KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Jan 31, '18

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 5th Edition (Fiscal Year of 2017) PDF 908KB
Governmental Report
Jan 31, '18

Executive Summary PDF 269KB
Governmental Report
Sep 11, '17

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (January to June 2017) PDF 2,496KB
Governmental Report
Mar 6, '17

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and employers of decontamination workers in Fukushima Prefecture (in 2016) PDF 2,590KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Jan 31, '17

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 4th Edition (Fiscal Year of 2016) PDF 1,081KB
Governmental Report
Jan 31, '17

Executive Summary PDF 2,781KB
Governmental Report
Sep 20, '16

Results of supervision and instruction activities for employers of decommissioning workers at the TEPCO Fukushima Daiichi Nuclear Power Plant and decontamination workers in Fukushima Prefecture (from Jan. to June 2016) PDF 2,297KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Aug 19, '16

Result of review at the "review meeting on occupational/non-occupational ionizing radiation disease" and approval as occupational disease/injury PDF 151KB
Governmental Report
Apr 13, '16

Results of supervision and instruction activities for employers of decommissioning and decontamination workers at the TEPCO Fukushima Daiichi Nuclear Power Plant (in 2015) PDF 2,251KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Jan 31, '16

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO's Fukushima Daiichi Nuclear Power Plant 3rd Edition (Fiscal Year of 2015) PDF 31,391KB
Governmental Report
Nov 20, '15

Results of supervision and instruction activities for employers of workers engaged in decommissioning of the TEPCO Fukushima Daiichi Nuclear Power Plant (from 11 March 2011 to 30 September 2015) PDF 1,163KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Oct 20, '15

Result of review at the "review meeting on occupational /non-occupational ionizing radiation disease" and approval as occupational disease/injury PDF 109KB
Governmental Report
Oct 9, '15

Results of supervision and instruction activities for employers of decontamination workers (from Jan. to June 2015) PDF 397KB
Decontamination/RemediationGovernmental Report
May 1, '15

Expert Meeting on the Long-term Healthcare etc. of Workers at the TEPCO Fukushima Daiichi Nuclear Power Plant PDF 653KB
Governmental Report
Mar 31, '15

Response and Action Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to TEPCO's Fukushima aiichi Nuclear Power Plant Accident 2nd Edition (Fiscal Year of 2014) PDF 3,184KB
Governmental Report
Mar 5, '15

Results of supervision/instructions to employers of decontamination workers (July - December 2014)
Decontamination/RemediationGovernmental Report
Nov 02, '13

Response and Action Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection for Workers Involved in the TEPCO Fukushima Daiichi Nuclear Power Plant Accident 1st Edition (Fiscal Year of 2013). PDF 1,896KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Feb 14, '13

Overview of the Expert Meeting’s Report on the Prevention of Radiation Hazards for Workers Engaged in the Disposal of Decontamination Waste. PDF 821KB
Decontamination/RemediationGovernmental Report
Feb 14, '13

Report by the Expert Meeting on Radiological Protection for Disposal Works of Decontamination-Removed Materials. PDF 598KB
Decontamination/RemediationGovernmental Report
Apr 27, '12

Overview of the second report from the Expert Meeting on Radiation Protection for Decontamination and Related Works. PDF 346KB
Decontamination/RemediationGovernmental Report
Apr 27, '12

Expert Meeting on Radiological Protection for Decontamination and Related Works The Second Report. PDF 361KB
Decontamination/RemediationGovernmental Report
Nov 28, '11

Overview of Report from the Expert Meeting on Radiological Protection for Decontamination and Related Works. PDF 169KB
Decontamination/RemediationGovernmental Report
Nov 28, '11

Report from the Expert Meeting on Radiological Protection for Decontamination and Related Works. PDF 565KB
Decontamination/RemediationGovernmental Report
Sep 26, '11

Expert meeting on the long-term health care of workers at the TEPCO Fukushima Daiichi Nuclear Power Plant (Report Overview). PDF 121KB
TEPCO Fukushima Daiichi NPPGovernmental Report
Sep 26, '11

Report from the expert meeting on the long-term health care of workers at the TEPCO Fukushima Daiichi Nuclear Power Plant. PDF 222KB
TEPCO Fukushima Daiichi NPPGovernmental Report

Mar 12, '21

The Amended Regulation on Prevention of Ionizing Radiation Hazards comes into effect as of April 1, 2021. PDF 681KB
Leaflets/Brochures
Apr '15

More thorough implementation of ensuring working conditions and controlling radiation exposure, etc. of workers engaged in decontamination and related works. PDF 134KB
Leaflets/Brochures
Feb '15

Engaging in decontamination and related works by young people below the age of 18 (minors) is prohibited. PDF 221KB
Leaflets/Brochures
Apr 12, '13

Pamphlet on works related to disposal of accident-derived waste (for employers). PDF 696KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Pamphlet on decontamination works (for employers). PDF 623KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Leaflet on works under a designated dose rate (for employers). PDF 405KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Pamphlet on decontamination works (for workers). PDF 1,193KB
Decontamination/RemediationLeaflets/Brochures
Jun 15, '12

Leaflet on works under a designated dose rate (for workers). PDF 681KB
Decontamination/RemediationLeaflets/Brochures

Feb 18, '26

Responses and Actions Taken by the Ministry of Health, Labour and Welfare of Japan on Radiation Protection at Works Relating to the Accident at TEPCO’s Fukushima Daiichi Nuclear Power Station
13th Edition (Fiscal Year of 2025) PDF 2.7MB

Annual Reports

The report documents, in a factual manner, how the dose limit for emergency workers was revised and how they overcame difficulties in the initial stages of the accident amid confusion caused by insufficient information soon after the accident. The report also provides a timeline of the MHLW’s and TEPCO's response while the tsunami caused a breakdown in the dose management system.

Executive Summary / Introduction PDF 699KB

Regulation of Dose in Emergency at the TEPCO Fukushima Daiichi Nuclear Power Station (NPS) PDF 1.4MB
1. Temporarily revising emergency dose limits
2. Problems raised after the accident and the responses by MHLW and TEPCO
3. Health management at the TEPCO Fukushima Daiichi NPS
4. Implementation status of measures against exposure to ionizing radiation in decommissioning works
5. Recommendations for emergency work at nuclear facilities
6. Exposure dose distribution of workers at the TEPCO Fukushima Daiichi NPS
Decontamination Works in the Accident of the TEPCO Fukushima Daiichi NPS and Necessary Radiation Protection Measures PDF 273KB
1. Radiation protection of workers involved in decontamination works
2. Outline of ordinances which provide radiation protection during decontamination works and restoration and reconstruction works, etc.
3. Status of the implementation of radiation protection in decontamination works
Overview of Guidelines and Notifications PDF 289KB
1. Overview of the Guidelines on Maintaining and Improving Health of Emergency Workers at Nuclear Facilities
2. Overview of the Ordinance on Prevention of Ionizing Radiation Hazards at Works to Decontaminate Soil and Wastes Contaminated by Radioactive Materials Resulting from the Great East Japan Earthquake and Related Works
3. Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Decontamination Works
4. Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in Works under a Designated Dose Rate
5. Overview of the notice, “Instructions to enhance actions for safety and health management measures for radiation works and emergency works at nuclear facilities”
6. Overview of the Guidelines on Prevention of Radiation Hazards for Workers Engaged in (Nuclear) Accidentderived Waste Disposal
7. Overview of the establishment of radiation exposure doses registration systems for decontamination and related works
8. Overview of the Guidelines on Occupational Safety and Health Management at the TEPCO Fukushima Daiichi Nuclear Power Station
Epidemiological Studies on Emergency Workers PDF 218KB
1. Overview of the Report of the Expert Meeting on Epidemiological Studies Targeting Emergency Workers at the TEPCO Fukushima Daiichi Nuclear Power Station
2. Overview of the report results, Research on Thyroid Gland Examinations, etc. of Workers at the TEPCO Fukushima Daiichi Nuclear Power Station (Sobue et al. 2014)
Promoting to provide the Information on the radiation doses of workers at TEPCO’s Fukushima Daiichi NPS to the world PDF 830KB