[en] Within the framework of the European Power Plant Conceptual Study (PPCS), the relatively near-term reactor model AB based on the use of Helium-Cooled Lithium-Lead blanket (HCLL) has been developed and assessed. The HCLL blanket is based on the use of EUROFER as structural material, of Pb-Li (Li at 90% in ⁶Li) as breeder, neutron multiplier and tritium carrier, and of helium as coolant with inlet/outlet temperature of 300/500 ^oC and 8 MPa pressure. The initial study has been focused on the '' large module '' maintenance scheme. The conclusion of such a study indicated that the use of multi-module maintenance could allow improvement in the blanket design by reducing the manifold complexity, in decreasing the He pressure drop and in locating pipes rewelding in a low neutron flux region. Therefore, this paper is devoted to the conceptual design of the model AB HCLL blanket based on the Multi-Module Segment (MMS) maintenance scheme. The basic principle is to have relatively small modules, welded on a strong poloidal back structure, in order to form a blanket segment which can be removed from the top in a similar manner as a banana-shaped segment. The MMS are removed as a single component and, before during segment replacement, the feeding pipes to be cut and rewelded are only those close to the top port for helium and bottom port for PbLi in order to allow most of LiPb to drain by gravity, that are regions submitted to very low neutron flux. This back structure is a common collector which will allow the feed and collection of the fluids (He and PbLi) in parallel for each module. It is assumed that the reactor features a major radius of 8.4 m and 16 toroidal coils defining a vacuum vessel with 16 sectors ; the maintenance will be performed vertically through the 16 upper ports. Each sector is formed by 2 inboard and 3 outboard MMS. Therefore, each upper port will allow the extraction of 5 MMS. Each MMS has 6 modules, and the general size of these modules is about 2 x 1 m² with the higher edge along the poloidal direction. MMS are attached to a strong low temperature shield by mean of a sliding/key system, and the shield is permanently fixed to the vacuum vessel. The integration issues of MMS and shield into the vacuum vessel are briefly discussed. A preliminary MMS mounting sequence is also presented. (author)