ACTUAL COSTS AND CAPACITY OF GASWORKS. 



217 



Pumps. There are two pumps. The largest has a 

 steam cylinder diameter of 5^ inches, ram 3^ inches, and 

 8-inch stroke. It is used for pumping from underground 

 to overhead tar tank, and for pumping to tar tower. The 

 small pump has a cylinder diameter of 4^ inches, ram 

 3 inches, and length of stroke 6 inches. This is used for 

 pumping water from stream to overhead storage tank, water 



Fig. 1 8. Exhauster House : Roof Elevation. 



to top of scrubber, and liquor to a distributor fixed half-way 



up scrubber. 



Gauges. A set of aluminium gauges, in mahogany case, 



is fixed in the exhauster house, and connected to the inlets 



of condensers, exhauster, 

 scrubber, purifiers and sta- 

 tion meter. A jet photo- 

 meter is also fixed. Cost 

 of pump, gauges, photo- 

 meter and connections, 



Steam boiler. Between 

 the retort house and the 

 exhauster house is erected 

 a Cornish boiler, measuring 

 12 feet by 4 feet 9 inches 

 with a 2 feet 5-inch firebox 

 and giving about 14 nominal 



Fig. 19. Boiler Seating. 

 Cross Section. 



