(a) an electoral district representativei. dies;
ii. resigns as a member of the Bureau in accordance with section 16;
iii. resigns as a member of the Order in accordance with section 160;
iv. is struck off the roll;
v. is disqualified or is in a situation of incompatibility within the meaning of the Code of ethics or Division VIII of this Act;
vi. elects domicile outside the electoral district for which he was elected;
vii. fails, without a reason considered valid by the Bureau, to attend three consecutive meetings of the Bureau or to express himself through a means of communication and on the conditions prescribed by regulation made under subparagraph 3 of the first paragraph of section 93;