188 



CHARLES J. FISH 



DUTCH ISLAND •- CONANICUT ISLAND 



NARRAGANSETT BAY 



BEAVER TAIL 



BONNET POINT 



10 TRANSITE PIPE 

 INVERT EL.- 4.5 



+ 8.0 



4"0 TRANSITE PIPE 



BURIED. 3' 0" COVER 



TRESTLE [underground LABORATORIES" "] 

 [_IN_ liP5IlFICATI0N_ JUNKERS j 



4"0 TRANSI'TE^ 



3"0 PV.C. To 

 UNDERGROUND LABS 



ELEVATED FIBRE GLASS - LINED 



STORAGE TANK. 



TANK BOTTOM EL. 75*. 



+ 65 



Figure 1. — Salt-water system at University of Rhode Island Graduate School of Oceanography, 



Saunderstown, R.I. 



assembling of the entire intake well unit 

 on shore and placement in the drained 

 crater with a crane. 



The pump well (fig. 2) accommodates 

 one Flygt Bibo 4 submersible pump. A 

 second pump is held in reserve for periodic 

 rotation or quick replacement in case of 

 emergency. This is facilitated by having 

 each pump fully equipped with its dis- 

 charge piping. Ever-tite aluminum rapid 

 couplings and detachable electrical cables 

 connect the pumps and receptacles, thus 

 simplifying the task of making a pump 

 change. The pump is of compact design 

 weighing 170 pounds. It is 29 inches in 

 height and 19 inches in external diameter. 



The pipeline conveying water from the 

 pump well to the elevated receiving tank 

 is entirely self-draining without valleys 

 or dips that would retain water between 

 pumping periods. A check valve and a 



vacuum breaker in the line, just before 

 entering the receiving tank, permit the 

 line to empty itself entirely through the 

 pump chamber within a few minutes after 

 cessation of pumping. This self-draining 

 feature of the line eliminates the necessity 

 of insulating it against freezing. The line, 

 750 feet in length, is of 4-inch Transite 

 pipe equipped with rubber ring couplings. 

 Valves and checks are equipped with 

 Buna-N seats and seals. 



The receiving tank (fig. 3) is constructed 

 of wood with a lining of 4-ply fiberglass. 

 The supply and discharge pipes pass ver- 

 tically through the bottom and are also of 

 fiberglass. Two mercury float switches in 

 the tank control starting and stopping of 

 the water inflow, operation of the pump 

 being electrically automatic. 



The distribution pipes from the receiv- 



