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steel having a tensile strength of not less
than , and shall be braced and stayed
for a working pressure of pounds,
and tested to pounds hydrostatic
| It*^ [ shall be inspected and insured
by a responsible steam boiler insurance company, this contractor to furnish a certificate of inspection and a policy of insurance for .
| Th? ) boiler sha11 be Provided with 2ia
!&mpipedrUm8f the necessary lugs, brackets, plates, bolts, stays, anchor and binder rods, man and hand holes, 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 21*- Betting. a first-class manner, according to standard
practice. This contractor to do all necessary excavating or filling for the foundation^) and to remove all debris.
(Specify character of soil upon which boilers will be placed.)
215. stack. (Note.—Specify material, diameter, height, lining, base, location, etc.)
2ie. smoke Smoke connections of , having an
area , are to be made with the stack,
and are to be provided with dampers
and cleaning doors arranged as follows:
2i7. Piping. (Note.—If the piping is to be erected with reference to existing piping or to meet special conditions the specification must be made up with due regard to such conditions; for entirely new piping, independent of auxiliary connections, the following specification will cover many cases.)
This contractor shall furnish and erect all necessary and proper piping to pipe the entire plant. From each boiler a branch pipe shall be carried to a main
header located , and from this header
a branch pipe shall be carried to each engine; all branch pipes from boilers and
to engines shall be provided with a
valve so that any boiler or any engine may be cut out without interfering with the operation of the remainder. The valve in the engine branch shall be in addition to the throttle at the engine. The engine exhausts shall be connected to an exhaust header and each exhaust branch
shall be provided with a valve;
the exhaust header shall be connected with the heater and from the heater shall be carried . (For non-condensing engines carry to atmosphere; for condensing engines to the condenser.) The exhaust from the (condenser and) feed pumps shall be carried . (For non-condensing engines carry to exhaust header or atmosphere; for condensing engines carry to the condenser or to an auxiliary heater.) Feed ( and condensing) water
will be brought to by the purchaser).
Drip (and condenser discharge) connections shall be made at . All piping
and larger shall be flanged. (Add specification as to hot-well, exhaust head, back-pressure valve, automatic atmospheric relief valve, connections for auxiliary heater, etc., if required; also the disposal of drips from live steam pipes, separator, engine jackets, receiver, etc.)
All live steam piping and larger,
(and also the following sections of exhaust piping - ) shall be neatly
covered with a substantial, non-heat-conducting pipe covering.
218 condensers. j independent steam driven [
| condenser(s) complete with pump( s ) and all connections;
| the*1 [ con(^enser t° nave a capacity of pounds of steam condensed per hour with condensing water at degrees
j Fahr. I J Cent. j
, feed pump(s) of standard Pump(s) and
manufacture (each) having ample capacity to feed — h. p. in boilers.
feed-water heater(s) [and puri
fier(s)] of standard manufacture (each) Bv^&etls).ai having ample capacity for—h. p. in boilers.
(Specify character of water to be used, and whether exhaust steam is to be used for any other purpose than heating feedwater.)
separator(s) of standard manufact- m^separa
A gauge board of shall be erected m^ow^a
in , and the following instruments
mounted thereon: . Connections
shall be made between these instruments and in the following manner .