Tarapur Atomic Power Station (T.A.P.S.) is located in Tarapur, Maharashtra (India). With a total capacity of 1400 MW, Tarapur is the largest nuclear power station in India. The facility is operated by theNuclear Power Corporation of India Limited (NPCIL). The reactor of nuclear power plant is the device used to initiate and control a sustained nuclear chain reaction. The building in which this reactor is placed contains of a steel structure. Thus protecting this structure from a fire was a critical and essential requirement. It is essential that coating applied within the reactor buidling do not absorb radiation and can be cleaned easily. The performance criteria fire performance for 1 hour , radiation for resistance , and long life performance before re coating internally. Newkem worked closely with Department of Atomic Energy and NPCIL to determine the necessary fire rating and structural fire protection system. Sprayfilm WB3, water based Intumescent Paint was determined to be the ideal system and Newkem was given to the contract to apply the system to the steel structures for Reactor Buildings 3 and 4. Newkem successfully completed the project within the scheduled completion time and thus ensuring a Fire Proof structure for the critical reactor unit. Newkem is the only organization, which has worked with NPCIL to provide fire protection in their Nuclear Power Plants.