Evening star., 1960-12-01
OFFICIAL NOTICES

with cross At each right angle
the feed line as close to the
boiler as possible. Hish pressure
boilers shall have q valve be-
tween the boiler and the check
valve. Water column. water feeder
and low-water fuel eut-out shall
have separate full size straight
way waived drains run to within
common visible drain. With the
valves located TO be conveniently
accessible for operation. Plug
cocks shall not be used. Tubing
shall not be permitted on boiler
piping or fittings, All piping shall
be nrmly braced and supported.
Drains shall be located so that
the DISCHARGE will not impinge, on
the boiler setting or electrical
equipment. III Section ~, Article
lUTDelete parasraphs "a" and
and "dR dRReilsttsF ts aI. par paragraphs IT. &c, &C.
the following new pa psrasfsphs "a snsets ! %
after the heading, 40. SAFETY
VALVES" (al Every steam boiler
shall be provided with one or more
safety valves Of the spring -pop tyne
and having side outlet discharee.
adjusted and sealed to discharge al
Q pressure not to exceed Is
pounds. Seals shall be attached in
2 manner to prevent the valve
from being taken apart or reset
% relieve at . hieher pressure.
Mitnout breaking the seal. Each
iIaive rll snall have . substantial
positively lift the disE from its IL
seat at least i/i6 inch when there
Y no pressure on the boiler
Where the lever Is more than ri
inches from the floor a flexible
chain or cable operating over a
pulley shall be provided 50 that
gne waive can be tested. -(bl Each
steam safety valve shall bear the
A-S.M9 symbol TO indicate that
COMPLIES with the requirements
o. the A-s.M.E. Boiler Code IN
regard TO construction, testing
snd rating. and shall be plainly
ena permanently marked By the
the marking will Be ,readable whsr
the valve Is installed and viii not
be ohhterated In service. The
marking. .shall include the manu-
Iecturer's name. the tyne and
catalos number, the pressure A.
which 1t ts set 70 blow, and fhs
sapaeity In. pounds OF steam i,er
nour aS certified By the Natfonal
IToara o. Boiler and Pressure Vessel
anspeetoTs; tel The steam safety
tsie capacity for each, steam
gol,er snail be such that with the
svsi s ournlng equipment installed
paeity,. the pressure cannot rise
more than 5 PSI above the maEis
mum allowable working pressnrs
Of the boiler, When oners,;ns
conditions are changed. such ~
Ener . change Is made Ia the
when repairs d aitsrstlonss itn1HMsns ,rs 9s
Sne SMroe 70 = boiler or system
n0s projected a. herein re-
euirea, Or when there is mo-
ssmpine ~. on . valve or it is
not elieible. or when 4 safety
.sive ..ssive ooes not function properly,
% %.nsn 9 new safety valve or
ulations shall Be instaliSd =,
shah be the responsiSiiit1 % ~ ~
the contractor mskinS The IN "
staliation or the CHANGE. 10
provide and install the neces,aSy ~
safety valves. (dD In ease Of
dispute over the safety valve
capacity or when. in the judG-
ment Of the. inspector, IL Il
considered advisable to test ths
capacity Of the safety yalves-
an accumulation test shall Be-
made bv the contractor or owner
10 the presence Of the inspector.
This test shall be made By
closing on all other discharGe
outlets from the boiler and on
Grating the fuel burning equip
ment At maximum capacity. The
safety valves shall be sufacient
70 prevent the pressure from
rising more than 5 pal above
the maximum allowable working
pressure OF the boiler. Provision
snail be made for piping the
steam diseharge from the boiler
itnIm,m TDGn Snrins ssn.s':, tss ,s;s !sl The The
valve or valves in pounds Of
tefmined as soilowMs: M uS Sc Scr
steel or cast iron boilers, null
tiply the square feet Of heating
surface. II available. By s or
use the maximum rating output
Of the boiler as siven, by the
sreater. 12j II the fuei.burnins
equipment installed viii produce
Q greater output than the mini
mum speetfied above, the ca
pacity Of the safety Salve or
valves shall be based on the
maximun, output obtainabie. In
any event the requirements Of
paragraphs &c" and "a" above
shall be met. ~ Safety valves
shall Be connected to boilers
with the spindle in z vertical
K. tapped sS,.s or HANGED ,,,,s opening IN
70 To- the boiler Sy T . ciose sDInlss Nipple.
to ., y-base. to 0 yalveless steam
pipe between the adjacent
boilers. or to q valveiess header
connecting steam outlets on the
same boiler. When \ Y-base Is
used. the inlet area shall not
be less than the combined outlet
areas. There shall be suficient
safety valves so that they can
be removed and replaced without
dismantling. TIE Identification
plate shall be located 50 as to
be readable. (g) No Shuton or
connection Of any description
shall be placed between Q safety
valve and the boiler. nor on
the discharge pipe between such
valve and the atmosphere. Al
safety valve shall not be con-
nected TO an internal pipe In
the boiler, Tgbips or saIyanissd
tbe valve and the boiler, Ch) a
on safety valves on low low pressure
boilers except where q. boiler
Is located In 0 RESTRICTED space
or where che discharge from
the valve might constitute Q
hazard to persons or to equip
ment. A discharge pipe, II used,
than the area Of the discharge
opening Of single valve or
the aggregate area Of ali valves
based on the nominal diameter
Of the diseharse openings Of
the. valves with which II con:
meets. The discharge pipe shall
BE- htted with an open drain
TO prevent water from lodging
in the upper part Of the valve
or In the pipe. When an elbow
ai.eSssss assd pips Ga 1 :ssii :s:fi' be saIse y.
The pipe shall be supported
50 that no strain Is placed on
shall Be arranged 90 there win
be no danger Of sealdins at
tendants. ~ A safety valve shall
not be installed TO discharge
inside the casing Of o self
contained boiler. t1Sl Section
", Article 13 delete paragraphs
"f' and "j". (l9) Section ~,
Article 14--Amend Article IL to
read as follows: I'D WATER
ERs AND coNTEoLs-These
ton and Installation Of hot water
Sydropneumatic tanks and relief
valves. cages and controls In
TON TioS. fNsTShLATioN AND RE-
PAIR OF HOT WATER STORAGE
TANKS AND WATER HEATERS
tal Each hot water storage tank.
range boiler. or automatic storage
water heater, having Q nominal
ESteTe1nti,ininS Ssen. ,ini .n. sspaeity Of l2o
working " pressure Of 15O p pounds aE
per square inch and shall be
tested hydrostaticslly TO 800
psi. Each tank shall have clearly
and indelibly stamped or stem
cilled thereon the name OF the
manufacturer, the maximum al
lowable working pressure for
which 1t is built. and the test
pressure. Tanks Of ferrous metal
shall be galvanized inside and
outside after construction. except
that the ealvanizine may be
omitted when the tanks are built
or lined In accordance with para
graph "f' below. tb) Each tank
for the storage of hot water,
either with or without q heating
coll. except those specified in
"a" above. and each converter
or heat exchanger. or automatic
storage water heater shall be
built for Q minimum working
pressure Of $50 pounds per
square inch. whenever any Of
the three folloying limitations
q 100000 BTU. per hour;
(2) A water temperature of