(1) The Central Government, in addition to the activities specified in sub-section (5) of section 3, for the purposes of national defence and security, may carry out certain activities and for the said purpose, exempt from the authority of the Board, any prescribed substance or radioactive substance or facilities and activities along with premises, assets and areas associated with such substance, facilities or activities.
(2) The Central Government may, for the purposes of sub-section (1) or for the design and development of advance nuclear reactor, by order, constitute one or more regulatory bodies to exercise the powers and discharge the functions relating to safety, security, safeguards, licensing and such other matters in respect of the jurisdiction, as may be specified in the order.
(3) The regulatory bodies constituted under sub-section (2), shall report to the Central Government the release of radiation or radioactive material exceeding the authorised limits from the facilities and activities within their respective jurisdiction specified in the order under sub-section (2).
(4) The Central Government may take such measures as may be considered necessary and expedient in the public interest, for––
(a) securing safety of public and environment from all radiation exposure situations; and
(b) safe disposal of radioactive wastes or disused or orphan or legacy radiation sources or incidental radioactive material.
26. Upon the receipt of recommendations from the Board under clause (f) of sub-section (3) of section 24, the Central Government shall, within a period of ten days, notify the nuclear incident:
Provided that where the Central Government is satisfied that the gravity of the threat and risk involved in a nuclear incident is insignificant, it shall not be required to notify such nuclear incident.