THE FACILITY 



The facility was assembled on a surplus 

 barge acquired from the U.S. Navy. The barge 

 is 32 ft X 110 ft in outside dimensions. A 26 ft 

 X 80 ft metal building on the main deck has 

 been converted to laboratory and office space. 

 Four of six ballast compartments below deck 

 were converted to maintenance shops and to 

 storage and work spaces. Two compartments — 

 one forward, and one aft — are used for ballast. 

 About 6,000 sq ft of floor space on the two decks 

 is available. The facility provides a stable plat- 

 form and, with water storage tanks full, draws 

 only 4 ft of water. A plan view of the main and 

 lower decks is shown in Figure 1. 



WATER SYSTEMS 



Two methods are used to supply water to the 

 facility. Untreated river water is pumped 

 aboard, and treated domestic water is pressure- 

 fed. 



Untreated Water Supply 



Untreated river water is used in the test 

 tanks and aquaria for all environmental stud- 

 ies. It is pumped at a constant rate of 200 gal- 

 lons per minute (gpm). The water is distri- 

 buted to two 6-ft-diameter, 1,000-gal storage 

 tanks, equipped with heating and cooling units. 

 Water in the storage tanks is continually cir- 

 culated through four sand filters (Fig. 2) . The 

 water from the storage tanks is gravity fed to 

 the test tanks, from which it drains back to 

 the river. All of the pipes carrying the un- 

 treated river water are plastic. 



Water is also pumped from the river to sup- 

 ply eight fish-holding tanks and two test tanks 

 in the fish-holding room (Fig. 3) . The two test 

 tanks are designed specifically for testing the 

 eff'ects of predation on fish subjected to lethal 

 and sublethal temperatures. Chilled river water 

 can also be pumped to three of the holding tanks 

 and the two test tanks. 



Domestic Supply 



Domestic water for personal use is supplied 

 by pressure to the facility through 1-in plastic 

 and galvanized pipes. Three sinks are provided 

 with hot and cold water; drainage is by gravity 

 except for the sink on the lower deck, where 

 disposal is by pumping. 



ELECTRICAL SYSTEMS 



Electrical power is provided through two 

 service lines: (1) a 220-v single- and three- 

 phase service provides power for pumping and 

 chilling the water and for lights, space heaters, 

 fans, and other general requirements and (2) a 

 440-v, single-phase line provides power for a 

 100-kw heater for the experimental water sup- 

 ply. Wiring diagrams are shown for the upper 

 deck in Figure 4 and for the lower deck in 

 Figure 5. A contactor has been installed on 

 the 220-v three-phase service to protect all 

 equipment against a "single-phasing" condition 

 that can cause motor damage. 



MAIN DECK LAYOUT 



The metal building on the main deck houses 

 the fish-holding room, laboratories, and office ; 

 other spaces used are the forward and aft 

 decks. All water and electrical systems are con- 

 trolled from the main deck. 



Forward Deck 



The forward deck, outside the building, con- 

 tains the two storage tanks and equipment to 

 hold, filter, heat, and cool water from the river. 

 The two storage tanks, with heated and cooled 

 water, are on a raised platform. Four sand fil- 

 ters, two for each of the cold and hot water 

 systems, are under the storage tanks. When 

 filtered river water is required, water from the 

 storage tanks is circulated through the filters. 

 Electrical controls for the cooling and heating 

 of the water for the storage tanks are housed 

 in boxes nearby (Fig. 6). 



Fish-Holding Room 



The fish-holding room contains four 6-ft- 

 diameter tanks (800 gal) and four 4-ft-diam- 

 eter tanks (350 gal) . Water is pumped directly 

 from the river with a 200-gpm pump, which 

 supplies a complete interchange of water in 

 each holding tank (at maximum capacity) in 

 less than 2 hr. 



Two test tanks, each 2 ft x 3 ft x 6 ft (300 

 gal), are on stands. A separate pump supplies 

 filtered river water to these tanks. 



Two freezers (36-cu-ft capacity each) pro- 

 vide storage for biological samples and fish 

 food. An air compressor supplies emergency 

 air to all fish-holding and test tanks. Sliding 



