In the I-P zone:
A. Every use shall be so operated that it does not emit dust, heat or glare in such quantities or degree so as to be readily detectable on any boundary line of the lot on which the use is located.
B. Glare from arc welding, acetylene torch cutting or similar processes shall be shielded from adjacent properties. (Ord. 1000 § 28.54(F), 1955)