Summary of Laws and Regulations for Nuclear Emergency Preparedness

7/31/2019 Summary of Laws and Regulations for Nuclear Emergency Preparedness

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[Special Law of Nuclear Emergency Preparedness]Clarification of responsibility and liability of licenseesClarification of the role and response in emergency of thenational governmentStipulation of special provisions considering the particularity ofnuclear disaster (establishment of Offsite Center, etc.)

Summary of Laws and Regulations for Nuclear Emergency Preparedness

[Basic Act on Disaster Control Measures]Basics of emergency preparedness mainly for natural disaster and promotion of comprehensive andplanned disaster management by governmentPreparation of disaster prevention planDisaster prevention measures, disaster emergency countermeasures (mainly by municipal andprefectural administrations), disaster recovery measures

[Reactor Regulation

Act]Prevention ofdisasters by

regulations foroperation, etc.of reactors and

securing of public safety

Basic Plan for Emergency Preparedness(Volume on nuclear disaster countermeasures)

Basic plan for emergency preparedness(Stipulates specific operation of the Basic Act on Disaster Control Measures)

Licensees EmergencyPreparedness Action Plan

Preventive measures,emergency countermeasures

and follow-up measures bylicensees

Order of Article 64 of theReactor Regulation Law

* Reinforcement of ability to respond to nuclear emergency by coordination of relatedagencies through emergency drills and other activities

EmergencyPreparedness Guides(Nuclear Safety Commission)

technical items

Attachment for Chapter II

Emergency PreparednessAction Plan

Plans of related governmentministries and agencies

for emergency

Regional Plan forEmergency Preparedness

Plans of prefectural andmunicipal administrations

for emergency


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(i) Article 105 Sv/h

(ii) Article 15500 Sv/h

Value of ray measured atthe JCO accident*

840 Sv/h

Normalcondition

0.05 to 0.1 Sv/h

Dose rate standard and response to progress of the situation based on theSpecial Law of Nuclear Emergency Preparedness (after accident)

(Articles 10 and 15 of the Special Law of Nuclear Emergency Preparedness )

(Reference)Fluctuation of dose rate around the site boundary

(1) In rain: About 0.2 Sv/h(2) In lightning: 100 Sv/h (momentary)(3) Passing of container: About 20 Sv/h (few minutes)(4) Others (Passing of a person who received RI):

About 100 Sv/h (momentary)

1 Sv/h 10 Sv/h 100 Sv/h 1 mSv/h

Dose rate

(Unit) Sievert (Sv)The energy absorbed by human bodywhen radiation hits a material objectcalculated by multiplying correction

coefficient according to the radiationtype.

(Effect to human body (acute disorder))100 Death 7,000 mSvNausea 1, 000 mSvTemporal decrease of lymph cell 250 mSv

* Measurement value of ray detected simultaneouslyas the emission of neutron ray.



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Emergency Preparedness for Nuclear Facilities Nuclear SafetyCommission

Areas with intensified emergency preparedness: EPZ (Emergency Planning Zone)


Facility type Approx. distance ofEPZ (radius)Nuclear power plants, reactors in research and development stage and nuclear reactors forpurposes of testing and research that are larger than 50 MW Approx. 8 to 10 km

Nuclear fuel reprocessing facilities Approx. 5 km

Nuclear reactors for

purposes of testing andresearch(50MW or less)

Thermal output 1 kW Approx. 50 m

1 kW < Thermal output 100 kW Approx. 100 m

100 kW < Thermal output 10 MW Approx. 500 m

10 MW < Thermal output 50 MW Approx. 1500 m

Facilities with special facility conditions, etc. Decided individually

Fabricating facilities andfacilities using nuclear fuelmaterials for the amount ofcritical mass or more

Facilities that use nuclear fuel materials (exclude those storedstatically in conditions with strict criticality prevention measures ofmass control, shape control, geometrically safe placement andothers) for the amount of critical mass or more and are of eithershape described below

Facilities that handle material in indeterminate form(solution, powder, gas) and indefinite form (physical andchemical processes)Facilities that handle uranium with enrichment of 5% ormoreFacilities that handle plutonium

Approx. 500 m

Other facilities Approx. 50 m

Disposal facilities Approx. 50 m


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Emergency Preparedness for Nuclear Facilities Nuclear SafetyCommission

Guidelines for staying in-house and evacuation


Predicted dose (unit: mSv)

Content of protective measuresEffective doseby externalexposure

Equivalent dose by internalexposure

Equivalent dose to infantilethyroid by radioactive iodineEquivalent dose to bonesurface and lung by uraniumEquivalent dose to bonesurface and lung by plutonium

10 to 50 100 to 500

Residents should stay in-house or in abuilding and keep air tightness by closingwindows and other openings.However, take shelter in a concrete buildingor evacuate when neutron ray or gamma rayis emitted directly from a facility followingthe direction if any.

50 or more 500 or more Residents should stay in a concretebuilding or evacuate following the direction.

Documents

Summary of Laws and Regulations for Nuclear Emergency Preparedness