Extended limitation and site-based exemption barred duty demand where construction-site manufacture was already settled and penalty fell away.

The extended period of limitation could not be invoked where the same subject matter had already been conclusively decided and the department had knowledge of the relevant facts; the demand was therefore time-barred. Goods manufactured at the construction site and used in that construction were treated as covered by the site-based exemption, with "site" construed liberally in line with the prevailing view and circular guidance. Once the demand failed on limitation and exemption, penalty and interest also could not survive. The duty demand was set aside and consequential relief followed.

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Issues: (i) whether the demand was barred by limitation and the extended period could be invoked; (ii) whether the goods were eligible for exemption as having been manufactured at the site of construction; and (iii) whether penalty and interest could survive.

Issue (i): whether the demand was barred by limitation and the extended period could be invoked

Analysis: The dispute on the appellant's role and the excisability of the goods had already been the subject of earlier proceedings, where the appellant was held to be only a work contractor and that view had attained finality. In that background, the later notice for the same subject matter could not be sustained by invoking the proviso to Section 11A of the Central Excise Act, 1944 on allegations of suppression or other culpable conduct. The period involved was also far beyond the normal period when measured against the facts already within departmental knowledge.

Conclusion: The extended period was not invocable and the demand was time-barred in favour of the assessee.

Issue (ii): whether the goods were eligible for exemption as having been manufactured at the site of construction

Analysis: Even assuming manufacture, the goods were made at the construction site allotted for the work and were used in the construction itself. The expression "site" was required to receive a liberal construction in light of the prevailing judicial view and the departmental circular relied upon by the parties. On that approach, the goods fell within the scope of the exemption notifications governing manufacture at site for use in construction work at site.

Conclusion: The goods were eligible for exemption and the assessee was entitled to the benefit of the notifications.

Issue (iii): whether penalty and interest could survive

Analysis: Once the demand itself failed on limitation and exemption, the foundation for penalty and interest disappeared. The record also did not justify penal action on the facts found.

Conclusion: Penalty and interest were not sustainable.

Final Conclusion: The duty demand was set aside, the ancillary penal and interest liabilities were annulled, and the appeal succeeded with consequential relief.

Ratio Decidendi: Where the same subject matter has already been conclusively decided against the department and the goods are manufactured at the construction site for use in the same construction, the extended period cannot be invoked absent sustainable suppression, and the exemption is available on a liberal construction of the site-based notification.

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