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shell(s) shall be made of steel having a tensile strength of not less than ——, and shall be tested to — pounds hydrostatic pressure. Bidders shall state the guaranteed evaporation from feed water at —— to dry steam at— pounds gauge pressure per rated horse-power, and per hour, and the amount of — conSumed.
a responsible steam boiler insurance company, this contractor to furnish a certificate of inspection and a policy of insurance for
! shall be inspected and insured by
#;"| boiler shall be provided with the
necessary lugs, brackets, plates, bolts, stays, anchor and binder rods, man and hand poles, steam and blow-off connections, stop and safety valves, pressure gauge, water column, gauge cocks and drip, set of stoking tools consisting of —, and all other appliances properly coming under this head.
The boiler(s) shall be set in masonry in a first-class manner, according to standard practice. This contractor to do all necessary excavating or filling for the foundation(s) and to remove all débris. The foundation(s) must be firm and substantial. All material shall be such as is especially adapted to the strains, stresses, and variations in temperature to which it will be subjected.
(Specify character of soil upon which boilers will be placed.)
Smoke connections of —, having an area .200. Smoke ——, are to be made with the stack, and are Connections | to be provided with dampers and — cleaning doors arranged as follows: —.
(Note.—Specify material, height, capacity, 21% stack. etc.)
— automatic stoker(s) of standard manu- *sout facture connected——, and operated ——.
(Specify how coal is to be delivered to them.)
——, — feed pump (s) of standard manu- pola facture (each) having a capacity of ——, injectors). together with — injector(s) as an auxiliary source of supply. (Specify suction heads.)
—— feed-water heater(s) [and purifier(s)) alol. of standard manufacture (each) having a Hood
- - urifier(s)).
capacity of —— heated from —– to ——.
(Specify character of water to be used, and whether exhaust steam is to be used for any other purpose than heating feed-water.)
—— separator(s) of standard manufacture, *jor• - Ol' (S). having a capacity of ——, and a guaranteed efficiency of —.
(Note.—Specify kind of pipe to be used, 215. Piping. method of suspension, all distances, locations of pumps, separators, etc., headers required,
216. Gauge Board.
217. Pipe Covering.
walls to be pierced, auxiliary connections,
A gauge board of — shall be erected in ——, and the following instruments mounted thereon: ——. Connection shall be made between these instruments and —— in the following manner —.
All — shall be carefully covered with a substantial, non-heat-conducting material, such as ——.
(As required.) 218. Painting.
Such renewal parts as it is advisable to *.** have on hand shall be furnished, a list of same to be added hereto.
(See note.—p. 47, sec. 27.) 220. Summary. Each bidder shall fill out completely the following summary: Number of boilers Rated horse power Kind Diameter Length - Number of tubes • T Diameter of tubes Heating surface Grate area . - Tensile strength of shell Testing pressure Guaranteed evaporation (Fuel) per horse-power and per hour . Outside dimensions of setting Number of pumps e Capacity of each Number of heaters Capacity of each Number of separators . Capacity of each
RULES OF THE NATIONAL ELECTRIC LIGHT ASSOCIATION.
Adopted at Montreal, Sept. 10, 1891, and Amended at Buffalo, Feb. 23, 1892.
CLASS A.—CENTRAL STATIONS.—FOR LIGHT OR POWER.
These Rules also Apply to Dynamo-Rooms in Isolated Plants, Connected With or Detached from Buildings Used for Other Purposes. Also to all Varieties of Apparatus, of both High and Low Potential.
GENERATORS OR MOTORs—Must be: 1. Located in a dry place. 2. Insulated on floors or base frames, which must be kept filled to prevent absorption of moisture, and also kept clean and dry. 3. Not exposed to flying or combustible materials. 4. Each covered with a waterproof cover when not operating. In no case must a generator be placed in a room where any hazardous process is carried on, such as the working room of a cotton, jute, flax, woolen or flour mill.