1. Yearly repairing of Ferrule and connecting pipes in emergency basis and Ferrule connection to different projects of NKDA/HIDCO at New Town Action Area-I for a period of 2 (Two) years under New Town Kolkata Development Authority. 2. Yearly repairing of Ferrule and connecting pipes in emergency basis and Ferrule connection to different projects of NKDA/HIDCO at New Town Action Area-II for a period of 2 (Two) years under New Town Kolkata Development Authority. 3. Yearly repairing of Ferrule and connecting pipes in emergency basis and Ferrule connection to different projects of NKDA/HIDCO at New Town Action Area-III for a period of 2 (Two) years under New Town Kolkata Development Authority.