Symbolic integration algorithms in CAS MathPartner

Risch theorem, published in 1969, gave beginning to creation of procedure library for symbolic integration. But such library, for past almost 50 years, still not been created. Some attempts of creation such libraries is known, but not one of them not finished. In computer algebra system MathPartner a new procedure library for symbolic integration, based on Risch theorem, is creating. We give detailed description of basic procedures contained in this library, and role of each procedure in symbolic integration algorithm. We represent procedural block diagram of whole algorithm and examples of computed integrals.