- Latest available (Revised) - English
- Latest available (Revised) - Welsh
- Original (As made) - English
- Original (As made) - Welsh
This is the original version (as it was originally made).
2.—(1) Mewn perthynas â’r paramedr tritiwm yn y tabl paramedrau sylweddau ymbelydrol, rhaid i awdurdod lleol—
(a)cyflawni gwaith monitro pan fo ffynhonnell anthropogenig o dritiwm neu radioniwclidau artiffisial eraill yn bresennol yn y dalgylch, ac ni ellir dangos ar sail rhaglenni gwyliadwriaeth neu ymchwiliadau eraill, gan gynnwys unrhyw asesiad risg a gyflawnir yn unol â rheoliad 6, fod lefel y tritiwm yn is na’r gwerth paramedrig a restrir yn y tabl paramedrau sylweddau ymbelydrol; a
(b)cynnal ymchwiliad mewn perthynas â phresenoldeb radioniwclidau artiffisial eraill os yw’r crynodiad o dritiwm yn uwch na’r gwerth paramedrig a restrir yn y tabl paramedrau sylweddau ymbelydrol.
(2) Pan fo monitro yn ofynnol o dan is-baragraff (1)—
(a)rhaid cynnal y gwaith monitro mor aml ag a nodir ar gyfer monitro’r paramedrau Grŵp B yn Nhabl 3 yn Rhan 2 o Atodlen 2; neu
(b)rhaid cynnal y gwaith monitro (yn achos cyflenwad dŵr preifat sy’n dod o fewn cwmpas rheoliad 11(1)) o leiaf bob 5 mlynedd neu’n amlach os yw’r asesiad risg y cyfeirir ato o dan is-baragraff (1)(a) yn dangos bod hynny’n angenrheidiol.
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