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Rheoliadau Cyflenwadau Dŵr Preifat (Cymru) (Diwygio) 2016

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This is the original version (as it was originally made).

Rheoliad 5

ATODLEN 1

RHAN 3Paramedrau sylweddau ymbelydrol

TABL D

Gwerthoedd paramedrig ar gyfer radon, tritiwm a DD dŵr a fwriedir i’w yfed gan bobl

(i)

Bernir bod cyfiawnhad ar sail diogelwch radiolegol heb ragor o ystyriaeth dros gamau gorfodi gan yr awdurdod lleol pan fo crynodiadau radon yn uwch na 1,000 Bq/1.

(ii)

s bydd crynodiad tritiwm yn uwch na’i werth paramedrig, rhaid cynnal ymchwiliad (a all gynnwys dadansoddiad) i bresenoldeb radioniwclidau artiffisial.

ParamedrauCrynodiad neu werth uchafUnedau mesur
Dos dynodol (ar gyfer ymbelydredd)0,10mSv
Radon(i)100Bq/1
Tritiwm (ar gyfer ymbelydredd)(ii)100Bq/l

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