, 1884-10-18

March 1870 concerning pubic control with Steam Boil
ers on shore, as amended by law of End April 1880,
5 ) /, 2, and 5, the following rules are hereby enacted:
A. Subject Of the control.
Every steam boiler which is used ON shore. either as a sepa.
rate apparatus for the generation of steam or for supplying q
steam engine, is subject to public control.
From such control shall, however, besides the steam boilers
mentioned in Ordinance of 10Th August 1884 %, the following
l. Cylindrical boilers without internal fue and of a capaci-
~ not exceeding so gallons, provided they (G) are fitted with q
gauge and a feeding apparatus; and (l comply with the rules
enacted in the 4 last clauses of next s p;
with a safetyvalve with a clear escape of not less than O,O7
square inch per square foot of heating surface (cfr. 2 LIST para
graph and the total weighing of such safety valve do not ex-
coed 10 lbs. per square inch, or that it is otherwise satisfactorily
shown to the Polcemaster that the pressure does not exceed this
Z. Boilers of a capacity exceeding 125 gallons, ifftted with
()a safety valve as that described under No. 2 and whose total
weighing does not exceed Z lbs. per squar re inch, () an open
tube communicating with the atmosphere not less than 3 inches
in bore, and not more than 16 feet in vertical height from
the lower opening of the tube, which, moreover, must not de-
Scend below the water level of the boiler to a greater depth than
atleaSt inches above the bottom of the boiler:
The rules contained i'll the 4 last clauses of next Is p are
applicable to the boilers mentioned under Nos. 2 and 3, in such
s7T "r'n nTr " ffte ID WITH nH,S N Or oo e'' tH5, OBSERVATION-DISCLOSURES u w iii the Amos oo$O
l9ere, not less than II inches i'll bore, and not more than 6 feet in
>erieal height from the lower over opening PENN 20 OF i the h t%nS, ~n'cn must
3. The arrangement Of the steam boilers SUBJECT to P"6hc
control.
The HEATING SURFACE Of the h. boiler, by which term is un.
derstood the entire surface of the sides, combustion chamber and
tubes of the boiler, exposed to the immediate action of the fire or
a manner that the Normal Water Lecel of the Boiler shall be at
least 4 ncteS obOre the heating surface.
This rule, however, does not apply to:
y Any apparatus for superheatmg steam, not being a part
of the boiler itself;
y Such parts of the heating surface as, owing to their COM
parative smallness and their position, in the opinion OF the survey
ors are in no case liable to become red hot even by exception
ally strong firing.
No part of the heating surface of a boiler must be constructed
of CaStirON or Brass. Excepted from this rule are, however, cy-
lindrical tubes of brass not exceeding 4 inches III BORE
The use of steam boilers constructed OF plates joined by
Tapping, and of steam boilers with Welded Joints upon which
the pressure Of the steam acts with a tendency to tear, is for
hidden.
IS.
The normal WATER LEVEL of the boiler lcr. 2, LIST para
graph shall be indicated by a line plainly marked on the boiler,
and, if this mark is hidden by masonry or any other covering,
also by a line plainly marked on such masonry or covering.
In order to control the waterlevel OF the boiler, the boiler
shall be fitted with an apparatus showing at all times the level
of the water, and 3 Gauge Cocks or valves with suitable orhces
of escape, and the inner Ormces of which shall be placed respec-
lively 3 inches above, l inch below, and inches below the nor
NAL water line. If the water-gauge and the gaugecocks are not
separately fitted Immediately on to the boiler, the JOINT communl-
cation between them and the boiler shall be effected by pipes of
from to ) inches i'll bore.
The eaugecocks or valves shall be arranged in such a
manner that dirt or incrustatiOn may be removed by ramming
them in q straight direction.
The said apparatuSes must be placed IN such a manner as TO
be easily seen by the engine driver.
"a
Every steam boiler shall be connected with at least one ser
viceable FEEDING APPARATUS capable of keeping up the nor
NAL waterlevel OF the boiler.
Where the supplying tube-the Feed Pipe-opens into the
boiler, the boiler shall on the outside be fitted with a separate
SeGcOSing UaIUe to prevent the water III the boiler from running
out through the ~feed-pipe.
Locomotives and locomotors shall be fitted with 2 feeding
appaIatuses, acting independently of each other and worked by
separate machinery, each OF which shall be OF sufficient capacity
to keep up the waterlevel of the boiler.
Immediate supply Of a boiler from the water supply of a city
is as a rule not considered allowable.
Several steam boilers belonging to the same establishment
may be supplied from a common feeding apparatus, IT the appa-
ratus is of sufficient capacity to supply as well each separate
boiler as all the boilers together with the necessary quantity OF