Ad hoc exemption refunds under excise law can survive prior duty payment, earlier proceedings, Modvat objections, and unjust enrichment.

A special ad hoc exemption order issued under Section 5A(2) of the Central Excise Act can be implemented through refund even where duty was paid on prior clearance, because the refund arises from the later exemption in favour of the recipient rather than from a challenge to the original assessment. Rule 57C did not defeat the claim since the goods were cleared on duty payment and the exemption operated at the recipient's end, and earlier proceedings did not create a final bar because liberty had been reserved to revive the matter after governmental consideration. The assessee also produced adequate duty-paying documents, and the presumption of unjust enrichment was rebutted by proof that the duty burden was borne by the assessee.

---

---

Issues: (i) Whether refund claims based on an ad hoc exemption order issued under Section 5A(2) of the Central Excise Act, 1944 were maintainable despite prior clearance and payment of duty; (ii) whether the bar under Rule 57C of the Central Excise Rules, 1944 applied where the supplier had availed Modvat credit; (iii) whether earlier proceedings and the prior dismissal of appeals barred the subsequent refund claims; (iv) whether the second refund claim filed after the 2002 ad hoc exemption order superseding the 1994 order was maintainable; (v) whether the assessee had produced sufficient duty-paying documents under Section 11B; and (vi) whether the doctrine of unjust enrichment barred the refund.

Issue (i): Whether refund claims based on an ad hoc exemption order issued under Section 5A(2) of the Central Excise Act, 1944 were maintainable despite prior clearance and payment of duty.

Analysis: The special exemption under Section 5A(2) operates through an individual order issued in public interest for specified goods and a specified recipient. Where such an order is issued after the goods have already been cleared on payment of duty, the refund mechanism is the mode by which the exemption is implemented. The refund is not a challenge to the original assessment on clearance; it arises because the goods are later exempted qua the recipient. The authorities and precedents dealing with reassessment or challenge to an unassailed assessment did not govern this situation.

Conclusion: The refund claims were maintainable and could not be rejected merely because duty had been paid at the time of clearance.

Issue (ii): Whether the bar under Rule 57C of the Central Excise Rules, 1944 applied where the supplier had availed Modvat credit.

Analysis: Rule 57C restricts credit where final products are exempt or nil-rated. In the present case, the supplier cleared the goods on payment of duty, and the exemption operated in favour of the recipient under the special exemption order. The factual premise for Rule 57C was therefore absent. The recipient's claim could not be defeated on the footing that the supplier had taken Modvat credit on inputs used in manufacture.

Conclusion: Rule 57C did not bar the refund claim.

Issue (iii): Whether earlier proceedings and the prior dismissal of appeals barred the subsequent refund claims.

Analysis: The earlier dismissal by the Tribunal was only to enable the parties to obtain clearance from the Committee of Secretaries and expressly left liberty to revive the matter. The dispute was thereafter examined at the governmental level and culminated in a fresh exemption order in 2002. The earlier proceedings were therefore not finally concluded in a manner that attracted res judicata or precluded consideration of the later claims.

Conclusion: The earlier proceedings did not bar the subsequent refund claims.

Issue (iv): Whether the second refund claim filed after the 2002 ad hoc exemption order superseding the 1994 order was maintainable.

Analysis: The 2002 order was issued in supersession of the 1994 order after the authorities were aware of the earlier rejections and litigation. The later order was intended to resolve the operational difficulties and could not be treated as legally ineffective under Section 38A. The later claims had to be examined in light of the fresh order, and the earlier rejection did not extinguish the right created by the subsequent order.

Conclusion: The second refund claim was maintainable.

Issue (v): Whether the assessee had produced sufficient duty-paying documents under Section 11B.

Analysis: The record showed that the assessee had furnished the relevant TR-6 challans, GPIs, PLA records and other supporting documents with the refund applications, and the adjudicating authority did not dispute their production. There was no credible material to support the objection that the refund claim lacked documentary proof of duty payment.

Conclusion: The assessee had produced sufficient duty-paying documents.

Issue (vi): Whether the doctrine of unjust enrichment barred the refund.

Analysis: The recipient was the ultimate consumer for whose benefit the exemption was granted, and the project documents showed that the duty burden was borne by the assessee. The presumption of unjust enrichment under Section 11B is rebuttable, and the assessee discharged that burden. The treatment of the amounts as recoverable deposits in the accounts also did not show passing on of the duty burden to another person.

Conclusion: The doctrine of unjust enrichment did not bar the refund.

Final Conclusion: The refund claims were allowed on the footing of the 2002 ad hoc exemption order, and the revenue's challenge failed; the assessee was held entitled to refund without the bar of unjust enrichment.

Ratio Decidendi: A special ad hoc exemption order issued under Section 5A(2) of the Central Excise Act, 1944 may be implemented by refund even after duty has been paid on clearance, and such refund is not defeated by earlier assessment finality, Modvat credit at the supplier's end, or unjust enrichment where the recipient establishes that it bore the duty burden.

---