law: Indian Boilers Act, 1923 
  6. Prohibition of use of unregistered or uncertificated
  
  boiler 
  Save as otherwise expressly provided in this Act, no owner of a
  
  boiler shall use the boiler or permit it to be used- 
  (a) unless it has been registered in accordance with the
  
  provisions of this Act;
  (b) in the case of any boiler which has been transferred from
  
  one State to another, until the transfer has been reported in the prescribed
  
  manner;
  (c) unless a certificate or provisional order authorizing the
  
  use of the boiler is for the time being in force under this Act;
  (d) at a pressure higher than the maximum pressure recorded in
  
  such certificate or provisional order;
  (e) where the State Government has made rules requiring that
  
  boilers shall be in charge of persons holding 25[certificates of
  
  proficiency or competency], unless the boiler is in charge of a, person holding
  
  the certificate required by such rules
  Provided  that any boiler registered, or any boiler
  
  certified or licensed, under any Act hare by repealed shall be deemed to have
  
  been registered or certified, as the case may be, under this Act.