1(1)In relation to any oil field—
(a)the first claim period is whichever of the following periods the responsible person elects, namely the period ending at the end of June following the determination of the field or the period ending at the end of December following that determination (including, in either case, an unlimited time prior to that determination);
(b)each subsequent claim period is whichever of the following periods the responsible person elects, namely the period of six months or the period of twelve months from the end of the preceding claim period:
Provided that unless and until the responsible person elects the period of six months from the end of any particular claim period, the claim period next after that claim period shall be taken to be the period of twelve months from the end of it.
(2)An election under this paragraph must be made by notice in writing to the Board.
2(1)A claim under this Schedule for the allowance of any expenditure allowable under section 3 or 4 of this Act for an oil field must be made by the responsible person to the Board and, subject to the provisions of this Part of this Act, must be made in a claim or claims for the claim period in which the expenditure is incurred, but may not be made before the determination of the field or more than six years after the end of the claim period in which the expenditure is incurred.
(2)A claim under this Schedule for the allowance of any expenditure allowable under section 3 or 4 of this Act for an oil field which was incurred by a person before he became a participator in the field must be made in a claim for the claim period in which he became a participator.
(3)A claim under this Schedule shall not include any expenditure allowable under section 3 or 4 of this Act which has been included in a claim under Schedule 6 to this Act.
(4)A claim must state—
(a)what part (if any) of the expenditure is claimed as qualifying for supplement under section 2(9)(b)(ii) of this Act; and
(b)the shares in which, in accordance with their respective interests in the oil field, the participators propose to divide between them, for the purposes of paragraph (b) of section 2(9) of this Act, the expenditure allowed on the claim and the amount which will arise under sub-paragraph (ii) of that paragraph if some or all of that expenditure is allowed on the claim as so qualifying.
(5)Where a claim for the allowance of any expenditure under section 4 of this Act for an oil field was made in relation to any asset for the claim period which, in the case of that asset, is the first relevant claim period (as defined in that section), then any claim with respect to that field made under this Schedule for any subsequent claim period must give all such information as is relevant for the purpose of enabling the Board to carry into effect the provisions of that section in relation to that asset.
(6)A claim must be in such form as the Board may prescribe and must include a declaration that all statements contained in it are correct to the best of the knowledge and belief of the person making the claim.
3(1)The Board shall by notice in writing to the responsible person inform him of their decision on the claim, stating in the notice—
(a)the amount of the expenditure allowed by them on the claim ;
(b)the amount, if any, of that expenditure allowed by them on the claim as qualifying for supplement under section 2(9)(b)(ii) of this Act; and
(c)the shares determined by the Board to be the shares in which, in the opinion of the Board, the amount stated under (a) above or, as the case may be, the aggregate of that amount and an amount equal to the relevant percentage of the amount stated under (b) above, is divisible between the participators for the purposes of section 2(9)(b) of this Act;
and where the decision relates to part only of the expenditure claimed, or claimed as so qualifying, the Board shall give a further notice or notices in relation to the remainder.
(2)In this paragraph "the relevant percentage" means the percentage mentioned in the said section 2(9)(b)(ii).
4If, in a case where sub-paragraph (5) of paragraph 2 above requires a claim made for a particular claim period to give all such information as is relevant for the purpose there mentioned in relation to an asset, a claim satisfying the requirements of that sub-paragraph is not made within twelve months after the end of that period, then, in carrying into effect the provisions of section 4 of this Act in relation to that asset for that claim period, the Board may proceed according to the best of their judgment, and may make any adjustments under any of the provisions mentioned in paragraph 6(2) of Schedule 4 to this Act accordingly.