Section 13(4) in The Petroleum and Natural Gas Regulatory Board (Access Code for Common Carrier or Contract Carrier Natural Gas Pipelines) Regulations, 2008
(4)If shipper off-takes more quantity of gas from the pipeline system than injected into it, then, the shipper is creating negative imbalance and the shipper shall be allowed a cumulative negative imbalance of five per cent of allocated capacity as a tolerance limit.
