Substantial expansion by furnace replacement qualifies for exemption when installed capacity rises by the required threshold.

Replacement of an existing furnace with a higher-capacity furnace, together with corresponding upgrades to auxiliary facilities, can amount to substantial expansion where the installed capacity increases by at least 25% after the relevant date. The Department's circular, read with the exemption notification, did not limit expansion to cases involving only additional plant and machinery; the decisive test was whether the unit had materially increased its installed capacity to the prescribed extent. On the facts, capacity rose from 4 MT to 5 MT per charge, supported by enhanced electric power sanction and related facilities, so the unit qualified for exemption under Notification No. 50/2003-C.E.

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Issues: Whether replacement of an existing furnace by a new furnace of higher capacity, with corresponding enhancement of auxiliary facilities, amounted to substantial expansion in installed capacity so as to qualify for exemption under the notification.

Analysis: The exemption applied to existing industrial units that had undertaken substantial expansion by increasing installed capacity by not less than 25% after the relevant date. The circular relied upon by the Department dealt with expansion through additional plant and machinery, but it did not exclude expansion achieved by replacing old machinery with new machinery of higher capacity. Reading the notification and circular together, the decisive factor was whether the unit had antly increased its installed capacity to the required extent. On the facts, the installed capacity increased from 4 MT to 5 MT per charge, and the increase was supported by matching auxiliary facilities, including enhanced electric power sanction.

Conclusion: The replacement of the old furnace with a higher-capacity furnace constituted substantial expansion, and the assessee was eligible for exemption under Notification No. 50/2003-C.E.

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