Regulation 7 Interruption in the flow of gas

Where, at any measurement place at which measurement directions require a relevant supplier to determine the actual calorific values of gas supplied by him in any area, the flow of gas is interrupted for any period, the actual calorific value determined at that place in respect of the gas supplied in that area on any day on which any part of the period of interruption falls shall be deemed to be an amount which is equal to the declared calorific value in force on that day with respect to the area in question.