• High Voltage Substation Engineering

    JEC has successfully accomplished the engineering of a complete scope for more than 200 Electrical H.V substation projects.
    Our scope of work often extends from layout, base and detailed designs to grounding, control, protection and schematics. It covers HV and MV panel designs as well as all phases are done to comply with specifications and optimal design. Scope of work of substation design may be summarized in the following tasks;

    • CT/ VT sizing calculations.
    •  Lighting system design calculations.
    •  Grounding system design calculations.
    •  Relays setting calculations.
    •  Low, MV HV voltage cables and breakers sizing calculations.
    •  Battery charger sizing calculations.
    •  Lightning system design calculations.
    •  Operational SLD
    •  AC/ DC SLD
    •  Protection & metering sld.
    •  Protection logic diagram.
    •  SCADA points lists.
    •  Interlocking logic diagram.
    •  Duct banks, cable trenches layout, sections and details.
    •  Lightning (shielding) protection layout and details.
    •  Indoor/outdoor lighting layout details.
    •  Small power distribution layout details.
    •  Floor opening – switchgear control building.
    • Design calculation of switchgear control building
    •  Design calculation of power transformer fire wall foundation.
    •  Design calculations of auxiliary transformer fire wall foundation.
    •  Design calculation of oil tank.
    •  Design calculation of water tank ,septic tank soak pit
    •  Design of gantry structure.
    •  Design calculation for HV switchgear foundation and steel support.
    • Column and footing location plan and sections for control building.
    • Ground floor roof framing plan, opening layout, slab rebar details and sections.
    • Staircase layout sections and rebar’s details.
    • Basement retaining wall opening and rebar details
    • Hand-hole, man-hole trenches and duct banks details.
    • Project layout design
    •  Primarily Architectural full design of substation building
    •  Architectural full project details
    •  Preparation of detailed BOQ.
    •  Project 3D modeling
    •  Project description and presentation
    •  Animation modeling and walkthrough
    •  Project coordination and review
    • Accompaniment of client after project approval with any technical clarification
      required.
    •  Monitoring the project progress
    •  After approval follow up with site requirements
    1. HVAC works
    • Preparation of design calculations for HVAC systems including Cooling Load, Heating Load, Ducts and Air Outlets Sizing calculations, External Static Pressure calculations, Pressurization calculations, Ventilation calculations, Fresh Air calculations, Smoke Exhaust System Calculations etc. using latest available software and standards.
    • Preparation of HVAC design drawings at its conceptual and detailed stages.
    • Issuing of complete package of design documents, including Ducting Layouts, Sections, Schedules of Equipment, Flow & Isometric Diagrams, Control Diagrams, and Design Calculation Report.
    •  Development and coordination of the duct routing and equipment layouts with other disciplines.
    •  Rectification of received comments and following the project until its final unproved status.
    •  Preparation of detailed BOQ.
    • Accompaniment of client after project approval with any technical clarification required.

    2.Plumbing works

    • Preparation of design calculations for Plumbing systems including Hydraulic calculations, Pump sizing, System pipe sizing for Domestic water system, Hot water system, Water Tanks capacity and drainage system using latest available soft wares and standards.
    • Preparation of Plumbing design drawings.
    •  Issuing of complete package of design documents, including Water Supply and Drainage Piping Layouts, Sections, Schedules of Equipment, Flow & Isometric Diagrams and Design Calculation Report.
    •  Development and coordination of the water supply, drainage piping and equipment layouts with other disciplines.
    •  Rectification of received comments and following the project until its final unproved status.
    •  Preparation of detailed BOQ.
    •  Accompaniment of client after project approval with any technical clarification required.