deliberately obstruct the WRA (or a person authorised by the WRA) in the course of an inspection or in the exercise of a power that has been approved by the tribunal under section 108 TCMA
rhwystro ACC yn fwriadol (neu rywun a fydd wedi’i awdurdodi gan ACC) yn ystod ymchwiliad neu wrth arfer pŵer sydd wedi cael ei gymeradwyo gan y tribiwnlys o dan adran 108 DCRhT