We study the boundary element method for weakly singular and hypersing
ular integral equations of the first kind on screens resulting from th
e Dirichlet and Neumann problems for the Helmholtz equation. it is sho
wn that the hp-version with geometrical refined meshes converges expon
entially fast in both cases. We underline our theoretical results by n
umerical experiments for the pure h-, p-versions, the graded mesh and
the hp-version with geometrically refined mesh.