Input credit retained where steam arose from a separate process using by-product gases, not from direct input use.

Steam generated from burning off gases or lean gases was treated as a final product only because it arose from a separate, subsequent process after carbon black manufacture, not from direct use of the duty-paid input in steam production. On that footing, Rule 57C and Rule 57CC of the Central Excise Rules, 1944 did not require reversal or denial of input credit on carbon black feed stock, because the input was wholly consumed in manufacturing carbon black and the later steam-making stage used only by-product gases or waste. Rule 57D therefore protected the credit and the full input credit remained available.

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Issues: (i) Whether steam generated from the heat obtained by burning off gases or lean gases was itself to be treated as a final product for the purpose of the excise rules; (ii) Whether Rule 57C or Rule 57CC of the Central Excise Rules, 1944 required reversal or denial of input credit on carbon black feed stock when steam was produced through a separate process after manufacture of carbon black.

Issue (i): Whether steam generated from the heat obtained by burning off gases or lean gases was itself to be treated as a final product for the purpose of the excise rules.

Analysis: The manufacturing activity was found to be in two distinct stages. In the first stage, carbon black was manufactured from carbon black feed stock by thermal cracking, and the process also generated off gases or lean gases as a technological necessity. In the second stage, those gases were burnt to generate heat, and that heat was used to produce steam from water. The steam did not emerge from the thermal cracking process itself, nor was any part of the input consumed for steam manufacture in that second stage.

Conclusion: Steam was a final product, but it was produced through a separate and disconnected process and not by direct use of the input in the manufacture of steam.

Issue (ii): Whether Rule 57C or Rule 57CC of the Central Excise Rules, 1944 required reversal or denial of input credit on carbon black feed stock when steam was produced through a separate process after manufacture of carbon black.

Analysis: Rule 57C and Rule 57CC apply only where duty-paid inputs are used in the manufacture of an exempted final product or exempted product, or where common inputs are used for both dutiable and exempted products. Here, the input credit had been fully consumed in the manufacture of carbon black, while the off gases or lean gases were merely a by-product or waste arising in that process. The subsequent use of those gases to generate heat and steam did not amount to use of the original input in the manufacture of steam. Rule 57D preserved the credit where a by-product or waste arose in the course of manufacture, and the facts did not justify treating steam manufacture as part of the original input-consuming process.

Conclusion: Rule 57C and Rule 57CC were inapplicable, and the assessee was entitled to retain the entire input credit under Rule 57D.

Final Conclusion: The reference was answered against the revenue and the assessee's entitlement to full input credit was upheld.

Ratio Decidendi: Where duty-paid inputs are wholly consumed in manufacturing the dutiable final product and an exempt product is generated only through a separate subsequent process using a by-product or waste arising from that manufacture, the credit cannot be denied under Rule 57C or Rule 57CC, and Rule 57D protects the credit.

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