National Security Administration Fort Meade

admin November 8, 2020 Leave a reply

National Security Administration (NSA) Renovate Serverland Room 2 at Fort George G. Meade

Meltech completed this important project for the National Security Administration for the renovation of the Serverland Room 2 at Fort George G. Meade in Fort Meade, Maryland. This project was for the National Security Administration Upgrade Infrastructure in Serverland Room 2. The work includes the following and all incidental related work: Convert Machine Room to Lab Room including demolition of select existing systems, retention and reuse of other existing systems, and installation of new architectural, mechanical, and electrical and fire protection systems/equipment. The work was conducted in a single phase. Work in this phase was required to be substantially complete and ready for occupancy within 210 calendar days after No-tice to proceed.

Major products and systems include the following:

  1. Reuse existing architectural components (walls, raised access floor grid, and acoustical tile ceilings.)
  2. Reuse resisting “house” mechanical system (overhead air distribution.)
  3. Modify chilled water distribution.
  4. New chilled water computer room air conditioning (CRAC) units.
  5. Modify existing lighting system,
  6. New power distribution to server racks and cooling equipment.
  7. Modify existing fire suppression/alarm systems.

 

WSSC Seneca Waste Water Treatment Plant

admin November 8, 2020 Leave a reply

Washington Suburban Sanitary Commission (WSSC) Seneca Waste Water Treatment Plant Weir Gate Replace Clarifier Distribution

Meltech completed this project for the replacement of the existing clarifier distribution box at the Weir Gates at the Seneca wastewater treatment plant. A clarifier distribution box is generally used to remove solid particulates or suspended solids from liquid for clarification and/or thickening. Concentrated impurities, discharged from the bottom of the tank are known as sludge, while the particles that float to the surface of the liquid are called scum. In smaller wastewater treatment facilities only one clarifier it is useful to know the clarifier’s surface level. In larger waste water treatment plants where influent flow is routed through a distribution box (splitter box) to many clarifiers, there may be insufficient room inside the distribution (splitter) box to accommodate level instrumentation. In this instance level monitoring of the clarifier will help attain proper load balance. 

Meltech completed the replacement of the existing clarifier distribution box. All of the shutdowns were coordinated with plant operations, limited to four (4) in duration and planned from 1:00am – 5:00am. 

Meltech provided temporary pumps for the pump around system. We provided two 6” trailer trash pumps with a total of 240 feet of solid flexible pipe and strainers. 

Each pump was specified for; 2400 gpm capacity, 18 feet left suction, 150 feet total dynamic head and 6×6 inch suction x discharge. 

The suction location was located from the Mix Liquor Channel and the discharge location was completed into boxes of clarifier gates not being replaced. Two (2) sump pumps (115v) were provided to pump the water draining into the Mix Liquor Channel. 

Meltech also completed the construction of the temporary wooden weir structure behind the gate opening to contain the flow in the event the weir gate replacement could not be completed. The corresponding clarifier was drained to install the wooden weir structure. 

Meltech completed the shutdown of the entire system to complete the work. We completed the installation of stop logs, demolition of the weir gate, installation of temporary wooden weir gates and the installation of the stainless steel weir gates which took place under separate plant shutdowns. 

The project required protection of the existing facilities and limited interference requirements for vehicular traffic entering and leaving existing facilities.