Modvat credit for electrolytic anodes: direct participation in manufacture qualifies them as eligible inputs, not excluded plant or equipment.

Graphite anodes and titanium metal anodes used in the electrolysis of brine for manufacture of caustic soda lye were treated as eligible Modvat inputs under Rule 57A because they were directly used in, and in relation to, the manufacturing process. The controlling test was not whether the items were durable or functioned for a lasting period, but whether they fell within the excluded category of plant or equipment in the Rule 57A explanation. As the anodes directly participated in the chemical reaction and were not merely mechanical or auxiliary parts, they were not excluded and qualified for credit.

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Issues: Whether graphite anodes and titanium metal anodes used in the electrolysis of brine for manufacture of caustic soda lye were eligible for Modvat credit under Rule 57A, or were excluded as plant or equipment.

Analysis: The anodes were not to be judged merely by their durability or by whether they were consumed like conventional consumables. The controlling question was whether they were used in or in relation to the manufacture of the final product and whether they fell within the excluded category in the explanation to Rule 57A. The anodes directly participated in the electrolysis and chemical reaction that produced caustic soda, and were not to be treated as mere machine parts performing only a mechanical or auxiliary function. The Board's clarification on electrodes and the prior view accepting titanium metal anodes as eligible inputs supported the same conclusion, and the Tribunal found no basis to depart from its earlier reasoning.

Conclusion: Graphite anodes and titanium metal anodes were held to be eligible inputs for Modvat credit and not excluded plant or equipment under Rule 57A.

Ratio Decidendi: An item is eligible for Modvat credit if it is directly used in or in relation to manufacture and does not fall within the excluded category under Rule 57A, even if it forms part of an electrolytic process or performs a lasting functional role in the manufacturing equipment.

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