  We present a first status report on a broad and systematic study of possible
manifestations of QCD-instantons at HERA. Considerable motivation comes from
the close analogy between instanton-induced $B+L$ violation in electroweak
processes and effects of QCD-instantons in deep inelastic scattering. We
concentrate on the high multiplicity final state structure, reminiscent of an
isotropically decaying ``fireball''. A set of experimental isolation criteria
is proposed. They serve to further enhance the striking event signature without
significantly suppressing the expected rates.

High Energy Physics - Phenomenology