38U.K.The “total activated TTH amount” held by the purchaser for a loss period which is the first activation period is the lower of—
(a)the amount by which, at the end of that period, the total decommissioning expenditure amount exceeds the total net profits amount (see paragraph 30), and
(b)the total TTH amount.
39U.K.The “total activated TTH amount” held by the purchaser for a loss period which is a post-activation period is the lower of—
(a)the adjusted activated TTH amount (see paragraphs 40 to 42), and
(b)the closing balance of the total TTH amount for the immediately preceding accounting period (see paragraph 49).
40(1)This paragraph applies if, in relation to a post-activation period—U.K.
(a)the relevant proportion of the decommissioning expenditure amount attributable to the TTH oil field for that period, exceeds
(b)the tracked profit or loss amount attributable to the TTH asset for that period.
(2)The “additional activated TTH amount” for the post-activation period is an amount equal to the excess.
(3)For the purposes of paragraph 39, the adjusted activated TTH amount is the total of—
(a)the closing balance of activated TTH for the immediately preceding accounting period, and
(b)the additional activated TTH amount for the post-activation period.
(4)In this paragraph and in paragraph 41, “relevant proportion” has the same meaning as in paragraph 30(5).
41(1)This paragraph applies if, in relation to a post-activation period—U.K.
(a)the tracked profit or loss amount attributable to the TTH asset for that period, exceeds
(b)the relevant proportion of the decommissioning expenditure amount attributable to the TTH oil field for that period.
(2)The “TTH reduction amount” for the post-activation period is an amount equal to the excess.
(3)If the TTH reduction amount is less than the closing balance amount, the adjusted activated TTH amount for the purposes of paragraph 39 is an amount equal to the difference.
(4)If the TTH reduction amount is equal to, or greater than, the closing balance amount, the adjusted activated TTH amount for the purposes of paragraph 39 is nil.
(5)In this paragraph, references to the “closing balance amount” are references to the closing balance of activated TTH for the accounting period immediately preceding the post-activation period.
42U.K.If neither paragraph 40 nor paragraph 41 applies in relation to a post-activation period, the “adjusted activated TTH amount” for the purposes of paragraph 39 is—
(a)an amount equal to the closing balance of activated TTH for the immediately preceding accounting period, if it is greater than nil, or
(b)nil, if the closing balance of activated TTH for the immediately preceding accounting period is nil or a negative amount.