xt7qnk361p0s_607 https://exploreuk.uky.edu/dips/xt7qnk361p0s/data/mets.xml https://exploreuk.uky.edu/dips/xt7qnk361p0s/data/88m6.dao.xml Inland Steel Company 185 Cubic Feet archival material 88m6 English University of Kentucky Copyright has not been assigned to the University of Kentucky Contact the Special Collections Research Center for information regarding rights and use of this collection. Wheelwright Collection Coal miners -- Housing -- Kentucky. Coal mines and mining -- Appalachian Region -- History. Company towns -- Kentucky -- Wheelwright. Community development -- Kentucky -- Wheelwright. Coal mines and mining -- Kentucky -- Wheelwright Disposal (P.F.T.) text Disposal (P.F.T.) 2016 https://exploreuk.uky.edu/dips/xt7qnk361p0s/data/88m6/Box_117/Folder_8/1682.pdf section false xt7qnk361p0s_607 xt7qnk361p0s 4
‘ ..', . . ' - . ~ ’ ‘i 111‘") (1' of 15.): ' ,
~ ~. " vars: - .'- . > 9'; w of.“ /_ ‘. ,
a can ,.” : « . ~ ~ . 7:2 . , U/L9 ,11/53 . a .
1x3: ‘ » l' INSTRUCTIONSFOR INSTALLATION .‘ e: v
'1“ p- ~”o5jhﬁfﬁ(For Details Refer to Bﬁlletin 321;_g ,7 =9
: - _w ',¢ ~' Individual’Pvints as noted) -_“H_. _ 77f
" gggggal, _ ; SAll item$”of Gag Safety Equipment should be g ‘
‘ . - installed‘as shown on engineers’_conotruction l
dvaWings and Pacific Flush Tank Company installation drawings?
Convenient accessibility-shoUld be provided as noted for the
individual items. . “a” i 1 7 _ . -'. 1' V‘
5111' gas pissing: (.iIa-s-l-Laaiirsi "an 53.95% FLQWE 929335219}, 1&3“) us
, _ to arranged to drain to accessible low points where safe and
;' convenient means for condonsate removal ohould be providedc
All gas piping should be adequately supported: anﬁ particulav cars
a . uaould be taken to prevent Settlement or dioylocement of lines
- tnvough the ground or otherwise inaccessible locationsc ‘
- Adequate ventilation should be provided in all rooms or confined
areas where gas piping Or appurtenances ave locatooc (Explosicnn
Li: 7 ryoof electfical oquipmont cannot be considered a substitute fov
<6) auoouato vontilationg) .7 - 'V ’ f '* " j
Aﬂoquate valves and unions should be provided to permit isol3ﬁiuf ;
~ auctions of the goo piping system.end replacement of poytions of
“7 the piping or any of the accessorieo: - 7~
' Pressure control tubes to the underside of diaphragms'ohovld he
'_ ‘ostended to a common point adjaoent to the digester so as to
. minimize pressure variation and pulsation at the valves or
_ HB-Fitilhcﬁ. - ' . ‘ ', , .- ' .
r The topside of all diaphragms should be connected to on outsiﬂo
vaab'to prevent eacape of gas into confined areas in the evont of
a diaphragm failure. (Connection to digester heater breaching or
-dfdoharge stack is not.reoommendeﬂ.) » 5 . V ‘
MGDEL NO. 1091' PFT FLAME TRAPS Shipped ccmplekely assembled in
[AaﬁmlOQlT'l 'oratas should be installed in a~horizontal sect an
’ ; . . ,of_tho supply-lines to all gas burning ofplisaoco:
vaorrow on the side indicates the direction of flowe There org
_ no mﬂjustments to be made, but the unit should be checked at the
t7mw‘of installation to make aura that the valve is hold upon L;
. tLo thermal release plug; The flame element itself should bu '
" §w*9 of dirt or other foreigh matter” ~ ' - . 7 7 , ‘.
’ Convenient access should be provided above the unit for removal of
. tﬁa flame elements Adequate clearance Should be proviﬁed below
' for removal of tho thermal valvea , V f ’~ ' , . '

I
FTEnZ (2 of h) '
E',’IE§’TI§EEFJTJ..310,-. .10‘22 WT 11"7~';E.-;IE‘:ET.TEIIJ I'I}:3T:LIII;I:I UNITS should “or? ntald in
(h~D~lO92) a horizontal Sﬂﬂtiﬁn of the gas piping system at
locations at Shown on plans. The prosguro control
tube I3/8” pipe 0? 1/3" Q.D. tubimg) to the undoroide of the
ﬁlaphragm should be connected to a location adjacent to the
digester. Bronchog off thig control line may contact to tho
”digoster" scale of the gas pressure gauge (Model H0. 790) and
to gas proosuro switch at a EFT Uigostot Heater and Hoat-Exohaugatp
The diaphragm should be soft and pliable and Should be treated with
Magtsfoot oil if it mam dried out prior to installatioou
.Tho Epossuto Belief Unit should to adjusted to a toliof pressure
' I I ° '5 '., ’. .’ . , - . . -."- _.'I,_ . ' "‘1";
lwl/Q“ Wu:s below the max1mum llOLaLlon pressure Ol too Eta
"”loating Cover at the sluﬂgo digeotor. Weights ptovidoﬁ allow
..‘ : I I . ‘ " v: 5 J -I ~ '- .. ..‘..
for adjustment by l/h‘ lnoremeuts obovo l" imitlnl aquxtalont
valuo of the valve putts and the diaphragm'plmto. .
Convoniont acceSs should bo provided above and to one side to yormit
adjusting weights or replacing tho diaphragm,
Tho unit im ohippod in a orite comtletoly asoomtloog except for
the adjusting weights which are blocked in plaoc in tho crate.
Those unjustmont weights should be set moioo and kept available
for too when required. .
MQEELVRO. lOQh EFT PRESSURE EELEEF UNITS WITH WASTE GAS FLKMR -
io#leOQHI TRAFS ate a compoalte unit made up of tho PWT
Model Ho. 1092 Prossuro Relief and EFT Wodol
Nos 1091 Flame Trap. Instructions applicable to the individnal
umitu will apply; .
EEEEI'TEEEEE EEo.. 3:31? Pm moot Lo BURNERS 31:01:11.1 be: ntn< :12:
location whore flame oxtending oonaoionally
b feet or more in any direction from the burner
pot'will cause no damage“ -
The supply lino and the pilot lino serving the Waste Gas Eutno?
should slope to accessible low points where convenient and safe
moons for condensate removal Should be provided.
If the Wasto Gao Burner or Supply lines are located on fresh fill '
or if those lines pass beneath.a roadway, particulav cote should
bo tokon to prevent settlement. J .
The burner pot iﬂ Grated for shipment with the ignition ting blocked
inoidog, The anchor bolts; pilot orifice and pilot sight~glaso and
nipple are packed in a carton also inside tho burner bell" The
Wooto Gas Burner_Podestal in shipped as a loose piece uncratodo _

l
_ . . ' ; . ' woe (3 0:14}
ﬂQDEL 30. A66 EFT MANUALLY-OPERATED DRIP Tﬁﬂfﬁ should bo
(H:§35557mmuw' provided at all low points in.the gas piping
system for safe and convenient removal of. .
.condensate.’ Drip traps are ohippeﬁ completely aosombled anﬂ
' generally boxed individually. It is proferablo to locate thoso
ﬁolow a tea at a rise in the gas piping oystom. Convenient access
ohould bo-providod for operation of the handle: The 1” outlet
should be connected to a drain or sump. _ .
Eggﬁgﬁggiggé PFT AUlelARY FLAME CELLS are oomotimos requirod
: fo? the waste gas burner pilot or other auxiliary -
. ' umo. Thooe are shippod oomplotely useembled and
Should be installod in o voryiggl nection of the ﬁas line to
pvoviﬂe condonooto drainagéwtﬁrough tho cell. , - -
" HQDEL EC, 790 PF? GAo PRESSURE “AUGES ore shippoﬂ oomﬁlotoly
“wwwmmwwmmmwwn oooomblod except for the indioitinﬁ fluid which -
is in a small onn in the box with tho unit.
Aﬁto? the Prosauro Gauge is installed on a will ow chow? ougpcrt,
lfﬂ” piyo may be used to connoat from the stop onl voﬁ;oocko
below the individual ooaleo to approﬁrioto locations in the foo
piping system. _
The Proosuve Gouge fluid is an oil with opooifio gravity ago. The
Gavgoo are filled by: (l) turming stop and vent cooks to
"morcfcheok” Position; and (2) removing tho vent manifold from '
tho top and pouring the oil into the individual ﬂange tubes.
(A rollod paper funnol io a convenience in thiS oporation.) '
Oil whoold b9 added until the level in tho roaewvoir and indiw
viduml tuboo is at the “G" on tho acaloo. It will be noted that
the position of the scales is aﬂjuotablo to aooomoﬁate minor
variationo.
The vent manifold should be oonoaotod to outoido atmosphere to
' prevent escape of gas into norfinod aroma in the event that oil
has been forced out of gauge by exceosivo prossure.‘ (A common
vont for all diaphragma ood the gas pressure gauge.may be moods)
Acoomo should be provided from the front for reaﬁing tho gauge,
and operation of the stop cooks bolow and filling the gauge from
abovx'bg -. V
‘ﬂggﬂgwﬁQJ ;ggi EFT ACCUMULATORS f0? CONDENSATE and SEDIMENT,
fh—D~102l7 when Specified ood shown on the plans, should be
. '. . 1 located adjacent to the digesters. The unitg
are completely asoomblod when shiypod, but include a PET Model.
Noo M66 Drip Trap and connecting fittings packed separately} for
which alternate connections are providoﬂg Convenient acooso
Should be provided from above for oheoking the condensate lovol ‘ -
insioe and from one side for aoceoo to the drip trap and flushing ‘
i ; iii . ”_ u_ , V ._ H _ 4_

I
\I I ., _ > . A I , ‘ -'

. ._ -' , - ’ ~ F‘l‘E—Z’ (2;.. of 1;.) - > '
MQQEQnﬁp. th PFT LOW PRESSURE GAS CHECK VALVES, when specified
(h~D-h205 and shown on engineers' printsg should be located

» in a gorigggtgl section of the gas piping system;

This particular diaphragm requires no connection for the pressure ‘
control tube to the underside, or_vents from the topsidec >
The diaphragm should be checked at the time of installation to ' '
make sure that it is soft and pliable, and it should be treated
with Neetefoot Oil, if'necessery._‘Access should be provided from
above to permit_diaphragm replacement. - '

f , a: 1 .Any.questions concerning installation of the . ’ ' .

9 -"various items of Gas Safety Equipment should
j . be directed to: p " ;-. -. .
“ V "21’; PACIFIC FIUSH TANK COMPANY ”
s . , _ _ V ‘, h2hl RAVENSNOOD AVENUE p .
4 “ 3 ﬁ_'. OHIGAGO 13, ngth018 :_ p
- “a, ' ' TELEPHONE: "WELLING$ON SuBlhl

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ELF-J.- C—01 5%........ M _ Pilot Orifice
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;".' '.'.~'_»»‘ Pilot Sight Glass
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Wasle line and pilot line -5ED PACIFIC ? FLUSH \_ 1
G must be sloped lo accessible DIOATE7 BY TANK COMPANY ‘
drip trap and should be below -D'M' WU“ ”9””? ‘
m“ ““e‘ _I_S‘ W‘B' WASTE GAS BURNER 3Q
ANCHOR BOLT SETTING - 1
' - PEDESTAL TYPE *‘
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‘ - .‘T’l‘ztwcé‘nﬁiy No 4-D~l348 ,

«I
‘ arrc~2 (1. of 9)
9-15—t9
-... -12 .1322 NJ £11.22
QEERATlQN AEQ ﬁélNIEﬁﬁﬂpE
(For Details Refer to Bulletin 321
“__mlndividual_§:ints a§_§3ted.)”“ ’
(Instructions for Installation,
......EEILEE EREIEE:E.~..L.--...__.
GENERAL INSTRUCTIONS FOR OPERATIOW AND MAINTENAVCE
W """MbF‘IKTWSE'i—F7TS’W "”3“1“WY”KEC"§T§T§<3WE??I‘SMMM*“
SLUWG? DIGESTER The first and most important consideration With
*WM"M"'-~meW‘ respect to satisfactory gas utilization is to
maintain at all times and under all circumstances a constantly
positive pressure in all parts of the distribution system. The
program for adding raw sludge and withdrawing supernatant liquor or
digested sludge should be coordinated so that a positive gas pressure
is present at all times at the sludge digester.

If the digester is equipped with a floating cover, this matter
is automatically taken care of and it is only necessary tobe sure
that the cover is maintained in floating position above the supports
on the tank wall. If there is occasion to bring the cover down to
its supports, the gas supply line should be closed and a vent should
be opened at the gas dome. During the time that the cover is in
this position, be absolutely certain that no open flames are brought
into the vicinity of the digester. If there is occasion to get
inside the tank, be certain that adequate ventilation is provided.
When bringing the digester back into service, wait until the cover

WIv~is floating and allow the gas to purge the gas dome of air before
opening the main line gas valve which permits gas to re-enter the
distribution system.

GAS LIKE DRAINAGE The nest frequent cause of inability to maintain
‘~m ”m'” '""""“M" a constantly positive pressure in the sludge gas
system is the presence of accumulations of condensate at low points
in the line. Sludge gas being produced from warm liquid is naturally
' saturated and will tend to drop moisture when passing through a
cooler area. Water is also formed as one of the products of combus-
tion of sludge gas with air.
. I_ The sludge gas piping (including pilot lines, vents and pressure
control tubes) should be so arranged that all parts of the system
drain to accessible low points, and at these low points provision
should be made for safe and convenient removal of condensate. EK—
perience will indicate how often condensate must be removed. It
will generally be found that most of the condensate may be removed.
from the main supply line from the sludge digester and from the
supply line to the waste gas burner. Gas meters should be provided
with drains, and piping should be arranged to minimize condensate .
accumulation in the gas meters.

‘ FTC~2 (2 of 9)
9-15-t9

If gas lines laid through earth fill, particularly beneath
roadways or building foundations, show losses greater than could be ,
normally expected, it is possible that proper drainage is being
prevented by settlement of the line. If it is necessary to reulay
the lines, proper support should be provided to prevent reoccurrence
of this settlement.

Even though all parts of the system may drain properly
during normal weather conditions, it may be found that certain parts
of the line are susceptible to accumulations of hoarfrost during
particularly severe cold weather which may result in complete closure
of the line. Such portions of the line should of course be protected
against severe low temperatures.

GAS LIHE LOSSES Pressure control tubes to the underside of diaphragms
“‘n ~m_“.mmilm. should be extended to a common point adjacent to the
digester so as to minimize pressure variation and pulsation at the
valves or switches controlled.

It may be observed that even though condensate is regularly
removed from all parts of the gas system, the preSsure drop through
the lines and accessories will gradually increase in time. It will
usually be found that this is occasioned by accumulation of slime
in the lines or accessories. This of course should be reroved
before losses through the system reach the point where they inter—
fere with proper operation. It may be found that the deposited
material will be suscaptible to spontaneous combustion following
exposure to air. If this taxes place, isolate and smother the blaze.
VENTILATION All liquid seals and diaphragms and all gas burning
-ﬁm"““-“ﬂw. appliances should be vented to the outside of the
building in order to prevent escape of gas into confined areas.

Care should be taken to prevent escape of gas into confined
areas when removing condensate. It is desirable that condensate
traps be of the type that positively close the connection to the gas
line when the drain is open. Automatic flost~operated units and
running traps are not considered to be safe.

It is inportant that adequate ventilation be provided in all
structures containing gas equipment or gas piping. Sludge gas when
mixed with air in certain portions presents an exceedingly dangerous ‘
explosion hazard. Sludge gas may also be toxic and a number of
fatalities have resulted at sewage disposal plants. Adequate venti-
lation, both from the floor and from the cieling areas, of all
structures is essential. The use of explosion-proof electrical
equipment cannot be considered a substitute.

Since sewage plants are so frequently visited by the public
and the uninitiated who have no Knowledge as to the existence of gas

_ and its hazards, a wide use of suitable warning signs will greatly
‘ improve the safety. It is recommended that boiler rooms, control
houses, and the general vicinity of the digesters be posted with
prominent display of suitable "Danger" and ”No Smoking" signs.

<
FTC~2 (3 of 9)
9—15-t9
ggggglgg ng3§2§3 QEEﬁLTIOE When a sludge digestion tank is being
brought into operation, it will be
found that on account of the initial acid stage of digestion that
the first gas produced will be high in CO2 and low in heat value.
The length of time before gas of useable quality and quantity is
being produced will depend upon the temperature of the sludge in the
tank as well as upon the pH (or acidity). This starting time can be
materially shortened by the use of auxiliary heat during the initial
operational period.

The recommended procedure is to fill the digester with sewage
from the primary clarifier hoppers until the floating cover leaves
the landing brackets by 6” to 12". Application of heat should be
commenced at once and continued until the digester contents are at
900 F. Sludge from the primary clarifiers should be added to the
digester frequently and in relative small quantities. A COPPGS‘
pending amount of supernatant liquor may be removed from the system
and it is recommended that supernatant removals be on as nearly a
continuous basis as possible. Assuming normal domestic waste, gas
production of burnable quality and quantity should be expected
within two to four weeKs after the digester contents have been
brought to 900 F.

When gas production starts, it is well to allow all gas to
pass through the system to the waste gas burner. Frequent exanina«
tion here will indicate when burnable gas is being produced. The
gas meter will indicate when the quantity is adequate to bring the
gas use appurtenances into operation. Some operations prefer to test
the quality of the gas by lighting a Bunsen burner in the laboratory,
and this procedure is also satisfactory.

Ilogllﬂliﬁ 3.0.3. ﬁeliﬂl?! _‘liQ Llﬂajlglé

HODEQ ﬁg; 2; PFT FLAME TRAPS should be installed in horizontal

TﬁiﬁFlOQl) sections of the gas supply lines to all gas burning
appliances. The Flame Traps afford protection to

the gas distribution and collection system by preventing passage of

flame from the locations of gas use.

The Flame Trap consists of 3 Renewable ?lame Element (h) of
m_ternatelv corrugated and smooth aluminum strips with gas passages
sufficiently small and of such length as will prevent passage of
flame. The vertical direction of the passages is intended to insure
drainage and minimize clogging.

The Thermal Valve (7) is held open by a Thermal Release (5)
and is closed by a Spring (8) worKing in the direction of the gas
flow following continued presence of flame on the top side of the
Flame Element. Continued flame at this location will melt the
soider holding a central plug in an annular ring which will permit
separation.

i
FTC:2 (h of 9)
9—1:~h9

When there is reason to suspect that the valve may he closed
as evidenced by a cessation of gas flow, the position of the Thermal
Valve may be determined by using the Feeler Plug after removing the
Check cap (9). There is 1/8” normal clearance but if the Plug may
be purshed up until it is flush with the hole from which it protrudes,
indication is that the thermal release has separated.

The inlet line should be closed before renoving the Flame
Trap Cover (2) or Bottom Plate (3).

The Flame Element Should be inspected occasionally to make
sure that the passages are open to permit the free flow of gas. The
after removing sub—assembly from the Flame Trap Body (l).

Heassembly of the internal parts may be accomplished by
worxing from above through the opening in the top of the Body (1),

(a) Make sure that the Peeler Plug is in position, then set

the Closing Spring down into the cavity in the center

of the Bottom Plate (3).

(b) Set the Valve Stem (6) of the Valve Plate (7) down inside
the Spring and set the Thermal Release (5) on top.
(c) A screwdriver or hacksaw blade may be used to guide the

Thermal Release up into the cavity of the Flame Trap

._1 1

glement (u).

(d) As the parts are joined properly, a slight click will be
heard and the Flame Trap Element may be secured in

position by the hold-down screws.

Reassenhly of the parts may also be accomplished by:

(a) Set the Flame Trap Element in from above and secure

it with the hold—down screws.

(b) Set the Thermal Release (5) on top of the Valve Stem (5)‘

and insert upward into the cavity in the Flame Element (4)-

Valve Stem and then lift the Bottom Plate (3) up into

position after making sure that the Peeler Plug is in Place.

in case the Thermal Release has separated, the central core
and annular ring may be joined by using ordinary solder after cleen~
ing the parts and tinning well.

The L" Pipe Plugs in the bottom of the Body and the Bottom
Plate are intended for temporary pressure gauge connections and may
be used occasionally to remove small amounts of condensate that are
not otherwise removable.

‘ FTC~2 (5 of 9)
9~15-M9
MQQEL.§Q;‘9§ PFT PRESSURE RELIEWS should be installed in a
Tth-10927w horizontal section of the gas piping with the
Diaphragm (15) above and in a horiaontal plane.

The Pressure Relief Valve controlled by upstream pressure serves to
allow excess gas beyond use requirements to pass to a waste gas
burner for disposal.

The Pressure Control Tube leading from the underside of tee
Diaphragm should be connected upstream to a location near the
sludge digester to minimize loss effects through the piping and
appurtenances that might result in pulsation or hunting of the Valve.
30 long as the gas pressure at the control point exceeds the pres-
sure for which the Diaphragm is loaded, the flexible Diaphragm will
lift the valve and permit passage of excess gas.

The Vent from the top side of the diaphragm must be open to
permit diaphragm movement. It should be connected to a vent lead-
ing outside the building to prevent escape of gas into confined
areas in the event of a rupture of deterioration of the diachragm. '

The Pressure Relief is adjustable by adding or removing
weights above the Diaphragm. Access is obtained by removing the
Diaphragm Cover (13). The Weight Holder (15) and the Valve Parts
(18 and 19) are equivalent to an initial value of 1” W.C. Weights
are normally supplied to permit adjustment by 1/4" increments to a
maximum of l” W.C. below the estimated maximum pressure that will
be developed at the gas dome of the Floating Cover.

For Gas Holder installations the pressure Relief is generally
adjusted to l/h" W.C. above the normal pressure developed by the
Gas Holder. For special applications, diaphragm castings and
weights may be supplied to permit a maximum relief pressure of
15" W.C.

The sheepskin diaphragm should be inspected occasionally to
make sure that it is soft and pliable and should be treated with
Neatsfoot Oil if it has become dry or stiff. The diaphragm must
be gas~tight and should be replaced when there is evidence of deter-
ioration. The normal life for a diaphragm will be 3 to 5 Years
but this may be considerably less during initial stages of digester
operation because of the poor quality of the gas.

The movement of the stainless iron Valve Stem (18) should be
free through the Aluminum Bushings (17) and if there is evidence
of binding that might be occasioned by an accumulation of foreign
matter the valve should be dismantled and cleaned. Before separat—
ing the Lower Diaphragm Housing (11) from the Body (21), the gas
line to the inlet should be closed as should also the pressure
control tube.

The l/h” pipe plugs at the bottom of the body and at the
bottom of the lower diaphragm housing are intended for temporary
pressure gauge connections and may be used occasionally to remove
small amounts of condensate that are not otherwise removable.

I
FTC~2 (o of 9)
9—15~t9
MODEL NO. 9h PFT PRESSURE BELIEFS WITH WASTE GAS FLAME TRAPS are
Tﬁtﬁtl5§E7mm composite units made up of the PET ﬂodel Ho. 91
Flame Trap and a PFT No. 92 Pressure Relief.

Instructions applicable to the individual units will apply.
ﬂODEL NO. lth PFT WASTE GAS BURNERS are used for disposing of
(5:5:l3h3j'mmm excess sludge gas not required for use, thereby

eliminating one of the more frequent and serious
sources of odors at sewage treatment plants.

The Enrner Pot rests on a pedestal through which pass the
Main Gas Supply Line and the pilot Line. The space around these
lines is filled with insulation material to minimize the tendency
for accumulation Of frost inside the gas lines during particularly
cold weather.

The burner pot is provided with a Deflector Plate above the
hell mouth Discharge of the supply line to direct the flow of gas _
at reduced velocity across the top of the Ignition Ring. The
baffled air supply from below serves the pilot which is below the
ignition ring and mixes with the deflected main stream of gas to
provide a burnable mixture. The vertical baffles in the upper por-
tion of the burner pot are intended to minimize the effect of
crosswinds and assure adequate mixing of gas and air for complete
combustion. The pilot orifice is presitcd for an adequate pilot
and requires no adjustment. The burner pot is designed to be self—
draining. There are no adjustments required at the waste Gas Burner
and the only maintenance required is to occasionally mate sure that
the pilot orifice and the vertical holes through the ignition ring
are open so as to permit contact between the pilot and the main gas
stream.

The burner pot assembly is renovabhe by removing the nuts
below the horizontal air deflector and lifting off. This provides
access to the ignition ring which in turn may be lifted off the
upper end of the 3&3 supply line to provide access to the Pilot
Orifice Stud, which in turn may be unscrewed fron the upper end of
the pilot line.

The pedestal itself is Conveniently removable above the
Anchorage Base Plate at the bottom.

During initial stages of operation, at which time the gas
production will be limited in quantity and there may be some
question as to whether it is of hurnable quality, it is suggestei
that the burner pot assembly might temporarily be removed.

In normal operation the pilot and waste gas supply can be
ignited by torch either through the air inlet from below or through
the nipple on Which the Pilot SightmGlass is attached.

1 FTCT2 (7 of 9)
9-15-t9
MODEL so. 11,66 PFT MANUALLY-QPERATED DRIP TRAPS provide a con-
TH:535557 venient means for removing condensate from low
points of the gas supply and distribution system
without allowing sludge gas to escape during the operation.

The assembly consists of a Reservoir (l) of two-quart
capacity which is normally connected through a Rotary Valve (2) to
the gas distribution system and acts as an accumulator for conden—
sate. When it is desired to drain the Reservoir, a turn of the
Rotary Valve Handle (3) closes the connection to the gas distribu—
tion system and opens the connection to the drain. The drain line
connects to an open discharge at the Drip Trap-so that condensate
as removed is visible.

The Rotary Valve is selfaaligning against the Ring GasKets
(h) around the two ports and seals positively since spring pressure -
is exerted through a Spherical Masher (7) at the center of the Valve.

The only adjustment necessary is to keep adequate pressure
against the Face of the Rotary Valve {2) and the Ring Gasxets around
the Inlet (S) and Outlet (6) ports.. To make this adjustment, turn
the inlet so that the outlet port (0) is open and the inlet port

(5) from the gas lines closed. Remove the reservoir casting (l)
and clean out any sediment that may have collected. Tighten up on
the Spring (8) with a Nut (9) provided until adequate pressure is
exerted on the Ring Gasxets. Loss in this position with the Lock
Nut (10), replace the reservoir and resume normal operation.

MODFL NO. 226 PFT AUXILIARY FLAME CELLS are intended for flame
‘TK:E:§§57MM~W Protection only on minor gas lines where the maxi—

mum flow will amount to 100 c.f.h. or less. The
unit consists of a Flame Cell of alternately corrugated and smooth
aluminum strips with openings of size and length that will prevent
the passage of flame. do Thermal Shut-off if necessary for this
type of service slice radiation is adequate for continuous flame
at the Flame Cell.

The Flame Cell is self-cleaning if installed as intended in
a vertical section of pipe. There are no adjustments to be made at
the flame cell. The only item to watch in maintenance is to examine
the unit occasionally to maﬁa sure that the passages are open and
will permit flow of gas.

MQQEQnEO. 722 EFT GAS PRESSURE GAUGES (ﬁraduated in inches water
Th~b~7§57~w column) provide indication of gas pressure at

several predetermined locations in the gas piping
system. If frequent observations are wade, any deviations from
normal conditions will be pronptly noted and arrangements can be
made for required maintenance of gas piping and appurtenances with
minimum interruption of the service.

The pressure gauge assembly consists of a ﬁroup of liquid
reservoirs with individual connections (1/8" pipe) to the gas
distribution system and with corresponding individual tubes of
unbreakable plastic, each of which is supplied with a scale cali~
brated in inches of water with an oil in the reservoir with a
specific gravity of 0.9. The oil should be of light specific

I
I
‘I NH 6 R C)
EEC/‘5. (I.. Of /)
9~15—h9
gravity of 0.9. The oil should be of light grade with a viscosity
rating of SEE—10.

The individual connections to the gas distribution system
are fitted with shut-off cocks that are pinnsd and drilled for a
vent to permit checking the ”0” rating. The scales are also fitted
with slotted holes to compensate for minor index errors.

The tops of the pressure gauge tubes are connected into a
manifold which is provided with a 3/8” pipe thread for connecting
to an outside vent.

The pressure gauge is filled b7:

(a) Turning the stop and vent cocxs to ”O/Chccx” position.

(b) Removing the vent manifold from the top.

(0) Pouring oil into the individual gangs tubos until the level
in the reservoir and the tube is at the "O” on the scalcs.

A rolled paper funnel is a convenience for this operation.
If too much oil is added (more than can be compensatcd for by
aijusting the position of the scales), the excess may be rcmovcd
by loosening the plug through the base bracxct directly beneath
the individual scales. '
ugg§;_wo, 19g; PFT ACCUMULATORS FOR COEDENSATE RED SEDIEENT
ThuD~l0215 servo as separators for condensate and other

foreign material carried from the digests? in
suspension by the sludge gas.

Units are provided with a PFT ﬁanually—Opcratcd Drip Trap
for safe Pomoval of condensate. There is a total available
volume of 5 gallons above the Drip Trap connection.

Accumulated sediment should be flushed out as often as
required by:

(3) Closing the Valve in the Gas line on the inlet side.
(b) Removing Drain Plugs at the bottom of tho pot.

There is a total volume of 5 gallons capacity below the Drip
Trap connection for accumulated sediment. The inspection pipe may
serve as a dip stick well for chccxing the condensate level inside
the pot. The amount of sediment will also be indicated by amount
of retention on the dip stick. It should be kept in mind that the
liquid surface inside the inspection pipe will be above the liquid
surface in the pot outside by the amount of gas pressure at this
location.

l
FTC-2 {9 of 9)
MODEL ﬁgimggg EFT LOﬂ PRESSURE CHECK VALVES serve to prevent
Zh—Dnﬁ203 the flow of gas in reverse direction and consist
of a leather diaphragm held open by normal flow
of sludge gas. A small hole is provided in the center to permit
the gas pressure to work with the weight of the leather diaphragm
and close the valve in case the pressure ahead of the valve for
any reason becomes less than the gas pressure following the valve.

There are no adjustments required and there is no need for
pressure control tube connections nor vent connections since the
unit is entirely self-contained.

The condition of the diaphragm should be checked occasion~
ally to make sure that it is soft and pliable and the diaphragm
should be treated with Neatsfoot Oil in case it b