APPENDIX 3 - PROJECT DETAILED ENGINEERING SERVICES Clause Samples

APPENDIX 3 - PROJECT DETAILED ENGINEERING SERVICES. Detailed design, including sodium facility, is under the responsibility of an engineering company chosen by the Final User. MSSA provides supervision and technical support to this engineering company regarding the sodium facility design. Engineering company undertakes to supply information, drawings or documents, in English, for the good completion of supervision and technical support by MSSA. Failure of to fulfill such obligations will raise right for MSSA to claim and delay deadlines. Supervision and technical support during design stage consist in: Drawings Supervision, review and approval of the basic engineering drawings modifications for final P&ID Supervision, review and approval of the plot drawings, equipments location plan. Supervision, review and approval of the sodium lines isometrics Documentation Supply of the ISO tank specifications (main dimensions, connections features for sodium, nitrogen and oil, specifications for electrical and instrumentation, utilities balance for oil, nitrogen and electricity). Utilities balance Supply of the main equipments specifications and sizing: sodium pipes and rod outs, flexible hoses, sodium valves, sodium pumps, pipe and valves heat tracing, insulation, sodium gaskets, sodium instrumentation (level probe, flow meters), sodium sampler, oil heating unit Supply of the specific design and implementation requirements of sodium equipments Supervision and approval of the equipment modifications according to local standard and duty MSSA sodium facility visit: Reception at MSSA’s POMBLIERE plant (FRANCE) or, at MSSA’s option, at MSSA’s PASADENA (TEXAS) facility of 2 engineers from the engineering company for a maximum duration of 5 days including: Plant tour and MSSA sodium loading spots overview. Global review of advancement of the sodium facility design Review of ISO tank containers specifications and connections Review of the drawings and all equipments specifications If reception of employees from the engineering company cannot be hold in MSSA’s plant during the design stage, MSSA can not be hold responsible for any misunderstanding, defect and technical issues during the construction and commissioning stages. If the meeting should be hold anywhere else, travel costs for MSSA personnel is not included and should be charged to VAST SOLAR Supervision and technical support during design stage do not include: Project management Supply of all the detailed engineering drawings Sizing of equipments (oil heating unit, ...