- 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This is the original version (as it was originally made).
Rheoliad 5
(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.” | |||
Paramedrau | Crynodiad neu werth uchaf | Unedau mesur | |
---|---|---|---|
Dos dynodol (ar gyfer ymbelydredd) | 0,10 | mSv | |
Radon(i) | 100 | Bq/1 | |
Tritiwm (ar gyfer ymbelydredd)(ii) | 100 | Bq/l |
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