(1)  In this section –

April 2011 guidelines means the document, relating to the assessment of permanent impairment under this Act, that was –

(a) referred to, at a meeting of the Board on 10 August 2010, as "Guidelines for the Assessment of Permanent Impairment" ; and

(b) approved by the Board at that meeting as guidelines for the assessment of permanent impairment under this Act to take effect following the completion of certain training –

and includes any appendices attached to the document when the Board approved the guidelines;

October 2011 guidelines means the document, relating to the assessment of permanent impairment under this Act, that was –

(a) referred to, at a meeting of the Board on 20 September 2011, as "Version 3 of the Tasmanian 'Guidelines for the Assessment of Permanent Impairment'" ; and

(b) approved by the Board at that meeting as guidelines for the assessment of permanent impairment under this Act to take effect on 1 October 2011 –

and includes any appendices attached to the document when the Board approved the guidelines.

(2)  Any guidelines for the assessment of permanent impairment under this Act in force before 1 April 2011 are to be taken to have been revoked immediately before that day.

(3)  The April 2011 guidelines are to be taken –

(a) to have been validly issued by the Board on 1 April 2011 and to have been in effect as guidelines for the assessment of permanent impairment under this Act on and from that date until immediately before 1 October 2011; and

(b) to have been revoked immediately before 1 October 2011.

(4)  The October 2011 guidelines are to be taken to have been validly issued by the Board on 20 September 2011 and to have taken effect as guidelines for the assessment of permanent impairment under this Act on and from 1 October 2011.

(5)  Nothing in this section is to be taken to prevent the Board revoking or amending the October 2011 guidelines.

(6)  An assessment of permanent impairment is not made, or to be taken to have been made, under this Act or the Asbestos-Related Diseases (Occupational Exposure) Compensation Act 2011 unless –

(a) if the assessment was undertaken on or after 1 April 2011 and before 1 October 2011, it was made in accordance with the April 2011 guidelines; or

(b) if the assessment was undertaken on or after 1 October 2011 and before the date on which this section commences, it was made in accordance with the October 2011 guidelines.