(b)operational expenditure paid out in connection with the compulsory slaughter and destruction of animals and contaminated products, cleaning and disinfecting of buildings, and cleaning and disinfecting or, where necessary, destruction of contaminated equipment, in accordance with the first, second and third indents of Article 3(2), the second indent of Article 3a(3), and points (a)(i) to (iv) and (b) of Article 11(4) of Decision 90/424/EEC;