SOLICITATION NOTICE
46 -- WATER RECOVERY SYSTEM
- Notice Date
- 5/17/2007
- Notice Type
- Solicitation Notice
- NAICS
- 562920
— Materials Recovery Facilities
- Contracting Office
- Department of Labor, Mine Safety and Health Administration, Acquisition Management Branch (WV), 1301 Airport Road, Beaver, WV, 25813-9426, UNITED STATES
- ZIP Code
- 00000
- Solicitation Number
- Reference-Number-464-07MR-1049
- Response Due
- 5/31/2007
- Archive Date
- 6/15/2007
- Description
- Diesel Laboratory Water Recovery System Specifications The Mine Safety and Health Administration (MSHA) Approval and Certification Center (A&CC) in Triadelphia, WV, operates a diesel engine test laboratory. Currently, the water cooled eddy current engine dynamometers are provided with city water which is dumped into the environment after a single pass through a dynamometer. This cooling method is financially and ecologically unsound prompting A&CC to recover coolant water. MSHA is soliciting bids for the purchase and installation of a water recovery system for the two (2) dynamometers. The dynamometers are not operated simultaneously. The maximum cooling requirement for the dynamometers is: 1. maximum coolant inlet temperature = 90o F 2. maximum coolant outlet temperature = 150o F 3. flow rate = 50 gpm 4. minimum dyno inlet water pressure = 40 psi 5. coolant = water 6. The proposed water cooling system provided by the contractor will consist of: a. Closed circuit cooling tower capable of cooling the dynamometer water from 150o F to 90o F at 76 o F wet-bulb temperature at a water flow rate of 50 gpm. The primary means of cooling shall not be evaporative. The material of construction of the tower shall be corrosion resistant and include a sump pump motor and basin heater with thermostat control. b. Minimum Pump specification 50 gpm @ 140 ? head with flanges. c. A holding tank buried below grade (below frost line) outside the laboratory. This sump tank will have ample capacity (approximately 300 gallons) to serve the cooling tower and larger dyno and be located at a level to allow all dyno and cooling tower water to drain into it when not in use. The contractor shall dig a hole to an appropriate depth (below frost line), and line the walls and floor of the hole with concrete. The size of the hole shall be adequate to accommodate the contractor supplied holding tank. The holding tank shall include a float assembly (to maintain proper water level), fill valve, drains and required inlet and outlet piping connections. The holding tank shall include a port or some means to allow the holding tank to periodically drained of its water. The holding tank shall include a cover for tank protection and access to piping. d. Complete supply and return piping system with steel pipe, valves, fittings, couplings, hanger materials, water make-up system, drain piping, and tie-in to existing dyno supply and return piping. e. Complete power and control wiring with wire, conduit, fittings, starters, disconnect switches, breakers, and support materials. f. The system design will be such that A&CC can operate the water recovery system or revert to city water if the system malfunctions. 7. Description of proposed operation. a. The 4 inch dyno drain lines will connect to the holding tank buried outside the laboratory. Hot water from a dyno in use will gravity feed to the holding tank. The 50 gpm pump will pump water from the holding tank to the cooling tower which will cool the water and provide the dyno in use with cooling water. Each dyno has a ball valve installed at its water inlet and lab personnel will manually open the ball valve for the dyno in use before the cooling system is turned on. The water level for the system will be automatically maintained at its proper level. When the system is shut down, all water from the dyno in use and the water tower will drain into the holding tank. 8. Relative location of components: a. Holding tank location will be outside the lab in a mutually agreed upon location. b. Cooling tower shall be located on the existing concrete pad adjacent to the diesel lab and outside the lab?s rest room.
- Place of Performance
- Address: USDOL/MINE SAFETY & HEALTH SAFETY ADMINISTRATION, NATIONAL MINE HEALTH & SAFETY ACADEMY, ACQUISITION MANAGEMENT BRANCH, 1301 AIRPORT ROAD, BEAVER, WEST VIRGINIA
- Zip Code: 25813
- Country: UNITED STATES
- Zip Code: 25813
- Record
- SN01296662-W 20070519/070517220656 (fbodaily.com)
- Source
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