law: The Petroleum and Natural Gas Regulatory Board Act, 2006
  21. Right of first
  
  use, etc.-
  1.  The
  
  entity laying, building, operating or expanding a pipeline for transportation
  
  of petroleum and petroleum products or laying, building, operating or expanding
  
  a city or local natural gas distribution network shall have right of first use
  
  for its own requirement and the remaining capacity shall be used amongst
  
  entities as the Board may, after issuing a declaration under section 20,
  
  determine having regard to the needs of fair competition in marketing and
  
  availability of petroleum and petroleum products throughout the country:
  
  Provided that in case of an entity engaged in both marketing of natural gas and
  
  laying, building, operating or expanding a pipeline for transportation of
  
  natural gas on common carrier or contract carrier basis, the Board shall
  
  require such entities to comply with the affiliate code of conduct as may be
  
  specified by regulations and may require such entity to separate the activities
  
  of marketing of natural gas and the transportation including ownership of the
  
  pipeline within such period as may be allowed by the Board and only within the
  
  said period, such entity shall have right of first use.
  2.  An
  
  entity other than an entity authorised to operate shall pay transportation rate
  
  for use of common carrier or contract carrier to the entity operating it as an
  
  authorised entity.
  3.  An
  
  entity authorised to lay, build, operate or expand a pipeline as common carrier
  
  or contract carrier or to lay, build, operate or expand a city or local natural
  
  gas distribution network shall be entitled to institute proceedings before the
  
  Board to prevent, or to recover damages for, the infringement of any right
  
  relating to authorisation. Explanation.- For the purposes of this sub-section,
  
  "infringement of any right" means doing of any act by any person
  
  which interferes with common carrier or contract carrier or causes prejudice to
  
  the authorised entity.