supply installation testing commissioning of water spray ( mist ) -type automatic fire fighting system for indoor power transformers installed at 4 different receiving sub-stations alongwith their comprehensive maintenance for the period of 3 years supply installation testing commissioning of water spray ( mist ) -type automatic fire fighting system for indoor power transformers installed at 4 different receiving sub-stations alongwith their comprehensive maintenance for the period of 3 years , group-1 , supply of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 3 bays at tardeo receiving sub station . , installation , testing & commissioning of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 3 bays at tardeo receiving sub station . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 3 bays at tardeo receiving sub station for the 1st year after successful completion of guarantee period of 24 months . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 3 bays at tardeo receiving sub station for the 2nd year . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 3 bays at tardeo receiving sub station for the 3rd year . , group-2 , supply of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 2 bays at simplex mill receiving sub station . , installation , testing & commissioning of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 2 bays at simplex mill receiving sub station . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 2 bays at simplex mill receiving sub station for the 1st year after successful completion of guarantee period of 24 months . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 2 bays at simplex mill receiving sub station for the 2nd year . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 2 bays at simplex mill receiving sub station for the 3rd year . , group-3 , supply of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 3 bays at pratiksha nagar receiving sub station . , installation , testing & commissioning of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 3 bays at pratiksha nagar receiving sub station . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 3 bays at pratiksha nagar receiving sub station for the 1st year after successful completion of guarantee period of 24 months . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 3 bays at pratiksha nagar receiving sub station for the 2nd year . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 3 bays at pratiksha nagar receiving sub station for the 3rd year . , group-4 , supply of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 2 bays at m . g . m . hospital receiving sub station . , installation , testing & commissioning of water spray ( mist ) -type automatic fire fighting system for the indoor power transformer having 2 bays at m . g . m . hospital receiving sub station . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 2 bays at m . g . m . hospital receiving sub station for the 1st year after successful completion of guarantee period of 24 months . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 2 bays at m . g . m . hospital receiving sub station for the 2nd year . , comprehensive maintenance charges per month for water spray ( mist ) -type aff system for the indoor power transformer having 2 bays at m . g . m . hospital receiving sub station for the 3rd year .