Dear Nandini,
If you are storing more than 100kgs of LPG (more than 5 Cylinders) you need licence from controller of EXplosives.
If you connect to a manifold you don't need a licence. But you need to comply with BIS standard for storage/ manifold safety requirements
Best Regards,
Thanking You,
B.S.Gopala Krishna, BE (Elect) , DIS (CLI)
OM Sri Krishna Environment,Safety & Occupational Health Consultants
Lead assessor ISO14001/OHSAS 18001.
Mobile No:97313 98860
Residence NO:080 2348 5012
Bangalore 560079