HHS performed a Pre-Design Study, the DIW Preliminary Engineering Design Report, and budgetary bidding and pricing for each component of the DIW System installation. Following that work, HHS provided final engineering and design work in order to produce a biddable set of drawings and specifications. HHS currently provides bid-phase assistance, value engineering, construction management assistance, and engineering during construction for the installation of the DIW system.
The main design engineering tasks included:
- Civil Site: site preparation, demolition, control room / electrical room construction, existing utility relocation, utility tie-ins, leveling the system area, general arrangement of system, and ancillary equipment.
- Structural: Concrete building foundation and slab, equipment pads and foundations, approach apron, structural steel mezzanine structure, structural steel for building.
- Mechanical: Equipment, piping, pumps, HVAC, chemical feed systems, building utilities.
- Electrical: Power feed & distribution, conduit and cables, panel layouts, PLC functional logic, instrumentation & control. Water Balance Study, Gallatin Steel- Ghent, Kentucky HHS evaluated the existing cooling water systems with regard to capacity, productivity, optimization, and efficiency.
- A water balance study, concentrating on the water use through the various cooling systems, and heat loss/gain through the hot and cold sides of the cooling systems, was conducted. HHS also evaluated filtration needs and capabilities, as they related to the increased production rates. Pumps, piping, tankage, and hydraulic capacity of equipment, as well as modifications to increase capacity, were considered.
HHS is conducting a feasibility study that will result in a selected set of options for each portion of the necessary cooling water upgrades. These options will then be carried through to detailed engineering. The level of complexity involved with each option may vary from a simple pump replacement, to a complete reconfiguration of cooling loops, filtration technologies, and towers. Systems evaluated include the direct and indirect cooling systems, the caster mold water and laminar system cooling water, recycle, wastewater treatment, scale pits, sand filtration, cooling towers, pumps, and piping.