Document JrzDqZ3D1KNv1w53LDqdro01K
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TO *'c2,, Kudd
ATTSfuTiCN
Ashtabula Staff ?.0Wa 3tnc':'is
W0 Vailcer
OX?o
C-<J'-iCs'
April 2?, ly/i;
Plant freathir:.;; tfr Cc.^:, ;: jf and rdctr.v^u.-jion System
Svxxzry:
la compliance with applicable CSHA standards and NIC'SIf rescmi-isndations,. a plant breathing air system has beer. designed and is ca orderj -ho system consists of ths following?
10 A scripressor system capable of supplying air bn a siicia::in if $0 porcc nrel;
20 A sorbent b.?d aod filter capable of recurring fcydrccsrbt.i cnntsaina.Yitf ,,
3o Sufficient continoua flew full face air lies respirator, to provide protection fer plant operatises personnel-..
Blscv.s3it>r-i
On larch 11, l?7ks the National Institution for Oscapatio.-ril Safety r:ai I ?-al.v.h.,.
(NlfEl) issued their "Poc-oasaeiided Cccupatior-al Standards frr t.us feuaufcmtwrc r.
Synthetic Polyuar fraalTinyZ Chloride"w
~
In part this rccccssndation states that esjployess woo enter a reccticn vsss-i shall be provided wi'h and required to wear a full face .supplied sir rospir-:.ii' of the contiuous flow or pressure ienund type,. In accordance with oSMA standard *Oo 1910 aiii,
The afore r.entionud article states that a breathing air systsa chill sene 1st. of a breathing air ccccreosoc* fedlowed by a suitable purifying sorbent bed uni: filters capable of providing grade D breathing air-, as discribcc in the -''Cc.rps ssc id Gas Association Commodity Specification C-=7 *1-15566. (sas attachment}
Iha breathing air system proposed by the :?ritcr will in fact root cr b:&c: all the ofora tnsntiaahd regulatory standards- and could be espuniod in the that futrm needs iru:c-'=x-t it..
it this point an in depth analysis of the system r-crsplabs vith flew rais: s she will ba provided-
GENC 21426
Compressor
The proposed compressor system will consist of four vr;to.: soviet :: sis: compressors. szz'r. oapabIs of 70 sc fir. ai 60 vsigv As provious^y d^ will provide respirable air for a ninimun of pO plant psrssrj'cl. bis e.vaot number will be do boxnined by the type of mask used and amplcybs
It 'Water seal compressors were ehcsar. for throe rr.ai? rorscrs.. 7hc first being that they o.ar.'s a unique ability to scrub impurities found in the Inline air.- Second that the air would leave the comccossor satu.ra.te-! with water vapor, Third, that the air urrrU. leave at subinert terparat >r. r> eliminating the need for an after coolers
2, Four smaller compressors were che3er. ever one'large unit for the following seasons,
3s 'iha increased reliability of four units covz ova large units ie, .the failure of cue ccraproEPcr rouli only result in a 2$r reduction of the aye ten pap-on ityf
o, i'.Uj.tiple units can bo mure `laaiiy take*:, cut -;i service fine ESiatoinsdu
c, Ths units can be started up as demand requires there by resulting in an enargy savings.
30 Filter and Sorlotion Beds,
For the purifying system a csramis filler separator folic.ved by an arbl? r-a.-i carbon, aisorbticn bed wee chosen, In the system, as proposed two 'units will : o used, one on standby and one in service * Tr.is system will be capable of pc the 2^0scfm cf air to a point well below Ippm, At full contamination rate purifier should last a minimum of
C<, Distribution System and Respirators,
At this time it is the intention of ths writer to provide breathing air .o tha following areas;
1, PaS^as? 5i&ldcg (bath -upstairs oni.downstairs) 20 Monomer Fiunp House 3, Monomer Unloading hr. Tank Farm Area, 5= THF Area 6, Boiler Heyna Control Room,
GENC 21427
tt- O
o
p
Is The distribution uystsm
a xcu cole'so:-: of u xcrec met.
header from the warehousa building to the r.ononer s,m/ >jso , _j l rsis lrJ.O,
branch lines will consist of tv;o inch pips,
Vsing the ?bcvs line sloes; or. evse all 07scer,, pressure crop fre:u
purifier to math should be leas tiic.n 3 pels If at a latere fate the
system capacity vas doubled the same distribution header ccilc be used
with a maximum pressure drop of 6 psi<
2, Carbon steel voided and fleafed pipe vill b-a used throughout tbs cyst -Mo Carbon steel was chosen of galvanised due to possible toxicity problems c the zinc costing,,
3C ''Shrader" type quick connect couplings -rill be used or. all branch cir; for easy connection under pressure to an sir lira, Ihssa c cunlings are jut used for any other purpose in the plant} and'therefore there will be nc possibility of the user connecting his line to the 'wrong pipe,
he 111 piping will be color coded per Of-UA standards to further elinrLc ,.bany possibility of hock up to the wrong lira,
$
5j Constant fir-? full fan a reepirabors have been chosan as bhe standard r.r this plant. The air- usa?o with these mashe is greater them with the ca.-.varh iy?5;: howeverj the constant lieu provides both cooling and protection ayvrst-
leakage,
b. Pending issuance of OSHAfa permanent work rules 9 bubble suits may ha ;?. to be purchased for naintanar.ee personnel who nan be working on ccntardorh eq-j.ip~.3nt,
7, Finally, it is zMCorrr.endad that cne full face respirator be purchased 1:' s=oh plant worker,, This is due to the stringent rej ulatione which CSKA hr 3 imposed for cleaning and dinenfacting face masks*
Conclusions
It is the writer's opinion that the afore mentioned system will full fill, m exceed all applicable Federal and Industrial standards for breathing air oyster.in
It should be noted at this tine that the air provided to the ussr at his & us?s will be pleasantly cool,, clear., and at an approximate relative humidity of 2C3,, This will reduce or eliminate complaints arising froa the drying out of the rr.nc >.13
membranes s
TLiibjn
Tai*. Allen, Prod, lupt,
QENC 21428
Compressed Gas Association Inc.
. Air
Specification G-7.1 Page 3
AIR SPECIFICATION
1. SCOPE
1.1 This document describes the specification requirements for air, including atmospheric air and air synthesized by blending oxygen and nitrogen in the proper proportions. It is different from other gas specifications because atmospheric air is not a manufactured product but is naturally occuring. Atmospheric air contains a large variety of trace constituents on many of which it is
impractical to set individual limits. However, this specification qualifies certain grades of air by limiting the concentrations of specific trace constituents.
' 2. -CLASSIFICATION 2.1 Types -- Gaseous air is denoted as Type I and liquid air as Type II. 2.2 Grades -- Table 1 presents the component maxima, in ppm (v/v) unless shown otherwise, for the types and grades of air. A blank indicates no maximum limiting characteristic.
Limiting Characteristics
% 02(v/v) Balance ^Pre dominantly Nj (Note 1)
Water
Hydrocarbons (condensed)in Mg/m* of gas at NT? (Note 3) Carbon Moncmde
Odor
Carbon Dioxide Gaseous Hydrocarbons (as methane) Nitrogen Dioxide Nitrous. Oxide Sulfur Dioxide Halogenated Solvents Acetylene Permanent Particulates
A atm.
TABLE 1
/ TYPE I
TYPE II
* UGASEOUS)
(LIQUID)
w g r A-D E S
B CDE
FGH JAB
atm.
atm/ atm/ atm/ atm / 19-23 19-23 19-23 19-23
atm/ atm/ atm/ 19-23 19-23 19-23
19-25 19-23
none cond ensed (per
5.3.1)
note 2 note 2 note 2 note 2
note 2 note 2 1 --10.4F
none
(per
5
5
5
5.4.1)
note 2
50
see 5.1.5
20
see 5.1.5 1000
10
see 5.1.5 500
5
see 5.1.5 500
25
5
see 5.1.5 500
5
see 5.1.5 500
1
see 5.1.5 0-5
15 10 0.5
5 none
5 10
2.5 0.5 0.1
0.1
2.5 0.5 0.1
10 1 0.1 0-05
0.5
0.5 1
0.5 -.15
Note 1: The term "atm" (atmospheric) denotes
the oxygen content normally present in"
atmospheric air; the numerical values de note the oxygen limits for synthesized air. Note 2: The water content of compressed air re quired for atty particular grade may vary
with the intended use from saturated to very dry. If a specific water limit is re-, quired, it should be specified as a limiting
dewpoint or concentration ir, ppm (v/v). Dewpoint is expressed in temperature F at one atmosphere absolute pressure (760 mniHg). To convert dewpoint F to C, ppm (v/v), or mg/lilcr, see 7.1. Note 3: No limits arc given for condensed hydro carbons bey'ond grade E since the gaseous hydrocarbon limits couid not be mpP^if condensed hydrocarbons were present.
e
GENC 21429
- * -A ** J 11w ^ J ; i;
a* >i L 'j v J J u ij 3
J L -j 'j j
The Selas Vape-Sorber operates in two stages; (1) Automatically removes water, water-oil emulsion,
free oil in droplet form and dirt from compressed air or
gas lines. (2) Removes oil vapor and free oil in the form of mist
and fog by passing the compressed air or gas through an effective adsorbent. Vape-Sorbers are designed to allow for sufficient contact time to enable adsorbent to effectively pick up all of the oil vapor and free oil in form of mist and fog.
insi
~1 -*' * 1j : i y ;/
Mji.ter Works:
CLUa. dt 0IL F8EE Alt
For the- removal of* w*terTWater--eiIemuIw and dirt^; " -
the Vape-Sorber- utilize*- basic- principle*- of capiUajy-r-*- --
physics- and surface1-chemistry for--effective-; Liquid-gas--*--- J-----
separatiotv. It. is-quite-differenfr.fnwifciandvmore-effectivy---
than, so-caLieth simple- filtration-method* and- techniques-,-- - "
employing change-in-flow-directie* or- cencrifugal-forefc--.
principles. 11*higb-effieiency remains,constant throughout.^^--
periods of both-higlt-and-Iow-fiowef_.
-->
Phase- separation tv accomplished- by means- of cod---..-/ /
trolled-porosityv water and emulsiwwepeUent^ ceramic eLe---- -
ments. Compressed air-or-otheyga*.entering. theeVape--
Sorber, passes- through-the- liquid*repeUentdement; where-
it is stripped, of- liquid- coatanunariotKand dirt Droplet*-
coalesce on- the- surface- of- the- demeot- because- the- dia--. tr
phragm action- is-stronger than the- pressure drop- aerosol-.;-
the element
- J"
' ~-
The rejected phase;drop*to-the-buttons of the-Vape-
Sorter and is- ejected^ from tbe- systemr.hy-simple~me JVlaSa-- J,. cbanical mean*.The air or gas. ladcnwitfcotl'Vaporaiiii3^^g^7^'^ij.T.''^j V-vh
free- oil- itt-foettr of-mistrand.f6gt.bufcfree of water; water.--A.
oil emulsion and.fretrod droplet^fpsssts through, a. spe--" oarWt W^: _
daily prepared-adsorbent andinstoppedeCtBe-oil ( fog and m*t>- by simple=*nskeffecri>TMd*rp<)i>ffc_
- ' -s', *.'* * ,, , .W-VJ*!*** ' *. * 1 Thus, the processed aidor-gaa.isconivfatdy Dee of
***
contaminaun with tbeexeepUondfctwta^vipoesvA.-PJSrS gev.?gff.r
j
SEMfcuomirturfet-,1 --"Trvarsst-tvttrl'tss^W^AiV
`fiLq-'. . !-" 'r^S^ . 1 *'* *Tyji;n s'fc i` A * talrfc*"**. -. ,A-
SjsScikiSilr
awfa.^Me-
A\
tlan'`IlfHUbi
of
ths
Vaps-Sorhi
The Series I VAPE-SORBERS are compact, functionallydesigned units engineered for in-line point-of-use installa tion. They can be supplied either in carbon steel with cast steel head, or in nickel-plated brass with cast-brass head. Series I units have a disposable canister.
Series II VAPE-SORBERS are equipped with "_0" ring type heads for positive sealing.
Tht following names are registered trademarks oJ $el*s Cpyoration of America UQUI-JECTOR
WPC-sq/fBen
Series III VAPE-SORBERS have single-bolt quick-opening Heads, and offer easy accessibility to filter elements and adsorbent.
Both Series II and Series III units are designed and built according to Code requirements and can be "inspeQted and stamped" upon request.
GENC 21430
nKmessor systems
-- : -r'EH COMPRESSOR SYSTEM Is complete v.'i*n galvanized pres;.-* tank to ASMS coda, fitcad
gevcs glass, pressure gauge, pressure switches, relief vaiva, silent c^eck .-aivss, shut-off valves, service i;oo;c strainers, regulating valves, sole noid shot-off valves, intake silencers, c.scrs'ge a.r and water separators and v.ata- t'sos. complete with intermediate c:0*.; A-.ailable for separate v/all
~z, is an electrical starter or dap ax control panel.
OIL FREE AIR -- Requires no internal lubrication, dis charge air from a SIHI Liquid Ring Compressor is FREE FROM OIL, CARBON or PLASTIC PARTICLES!
SCRU33SDJ'`} CLEAN by the action of the liquid ring with in the compressor the AIR DISCHARGED may be FREE EVEN FROM IMPURITIES DRAWN INTO THE PUMP SUCTION!
ELIMINATION OF FILTERS -- made possible by the 'i
SCRUBBING ACTION described above.
j
DRIER AIR -- is supplied from a liquid ring compressor when compared to a conventional reciprocating or rotary vane unit; Due to the MINIMAL TEMPERATURE RISE ACROSS A SIHI COMPRESSOR the air or gas usually dis charged is APPROXIMATELY 25F ABOVE the tempera ture of the INCOMING SERVICE LIQUID. As the saturated discharge air has a lower temperature, the corresponding dew content is lower, ELIMINATING THE USE OF AFTER COOLERS and enabling considerable ECONOMIES to be made IN DRYER SELECTION AND OPERATION.
PULSATION FREE AIR SUPPLY --due to ELIMINATION OF RECIPROCATING COMPONENTS.
VIBRATION FREE OPERATION-- requiring NO SPECIAL FOUNDATION due to rotary action as opposed to reciprocating forces.
LOW STARTING TORQUE -- permits considerable ECONOMIES IN ELECTRICAL STARTING AND CONTROL COMPONENTS.
MAINTENANCE COSTS REDUCED -- due to the ELIMINA TION OF PISTONS, RINGS, SLIDING VANES, INTERNAL CONTACT OF COMPONENTS, METALLIC, CARBON, PLASTIC OR OTHERWISE.
SIMPLIFIED INSTALLATION --because the SIHI pumps and accessories are MOUNTED ON A REMOVABLE DECK WHICH MAY BE READILY DETACHED from the pressure tank. THE SIHI SYSTEM CAN USUALLY BE INSTALLED AFTER BUILDING CONSTRUCTION AND CLEANING of the proposed location is completed.
system are covered by the comprehensive SIHI authorized service are available coast to coast.
i
GENC
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I
i
i
\J
t
js
f:i
4I
i 5 }l
jj
:
1 i
the principle ofSIHI
i ";'
| The aboveillustration isintended to depict the
; i'
j
I operating principle ot the SlHi double acting liquid -
3 ring pump on1/ and should not ce considered tor '
! engineering details otconstruction. f
'1 ;
double acting
! As in the SIHI single acting pump the pump body
liquid ring pumps
j (A) is round externally. However, note that the in* ; ternal periphery of the body is eliptical (B) the
i centre of which coincides with the centre line of ths
i shaft mounted impeller (C). Oue to centrifugal ac-
' tion, service liquid introduced to the compressor
; assimilates the eliptical shape of the internal peri-
; phery. By controlling the depth of the service liquid
\ the impeller blades are totally immersed at six and
twelve o'clock, whereas all but the blade tips are
Half of the total air or gas entering the stage enters
exposed at three and nine o'clock during each
through suction port (D) at which point the service
revolution.
liquid is retracting from the root of the passing im
peller blades. This air or gas Is carried between the
By locating the suction ports (), (D,) in a strategic
impeller blades and as the service liquid (due to
position in the suction port plate (E) and the dis-
el!p:ica! shape) commences to completely immerse
charge ports (F), (F,) in the discharge port plate
the impeller blades to their root, the air or gas is
(G), a suction/compression cycle is completed with
compressed and discharged from the pump via dis
each 180* of rotation.
charge port (F).
Concurrently a similar action takes place involving the remaining fifty percent or the air or gas throughsuction port (D,) and discharge port (F,).
There is no metal to metal contact during this complete cycle thus the need for internal lubrication is eliminated. During the compression cycle, heat is being imparted to the service liquid which is carried away by the introduction of additional cool service liquid. The amount of coolant supplied is synonymous with the amount discharged to the separators.
< ' j i j ; \ j
i | r
i
i | j j j i !
The double acting principle is utilized for high pressure compressors because the points of highest pressure are diametrically opposed hence a radially balanced shaft loading reduces deflection and facilitates the application of mechanical seals.
i j 1 ! '
GENC 21432
D
GENC 21433
ZlHz 0N30
s|eas leopEqosuj 10 uO!JE3j|dd3 am seibi; -|pei pue uoipeusp saonpaj Suipecj yeqs peoue|eq XiiEjpEj e aoueq pesoddo Xneoyieueip eje ejnssajd IseqBiq jo sppd aqj asneoeq sjoesajdtuoo ajns -*ejd q6|q jo; pszj|t}n s; |di3uud Bujpe iqnop aqx
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uoijepj 10 .081 qoea qjiM peie|dujc3 si apXo uoissajduioo/uoipns e '(9) B}E|d yod aSjEqosip Syi ui (>j) `(j) syod eEjeqo -sip aqi puB (3) e)B|d piOd uo;pns am ui uoipsod ojSeieJis s ui ('q) `(q) syod uoipns am Suqspoi Xg
`uojinpAaj
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'ua/iar.jisuca ;o s':aiap SuuaauiSqa ioi pajsptsuaa s? icu piac-js pus /;uo du/rd Sun pmbu Suijos siqr.op ipig aqi p a/diauud Supajada aqi loidap 01 pepuaiui sy uo/pjpn//; SAoqe aqi
-(`j) yod aBjeqosip pus (`a) yod uoipns
-qBnojqi svG jo j|e aqi 10 tuasjad Xu;} Suiuieoisj am Su|a|oau| #3E(d aa>iai uo|pe jbijums e Xnuajjnsucj
(d) yod sSurq;
-sip e|a dujnd aq; uioj} paSjBqosip pue passajdiuos s| sgB jo j;b aqi `poj jpqi 01 capep jenadim am esjeimui Xpiaidiuos 01 saouaujoioo (adeqs |eoi:d;|S 01 anp) prnbji aojAjas am sb pue sapsiq jsiiadiuj aqi uaaMpq payiso eg seS jo j;b sjqx sepeiq Jsnsd ui| CupsEd aqi jo iooj aq; iuoji Bupsejiaj si pinbn aojAjas aq; piod qp|qM ib (a) yod uoipns qSncjq; sjepa aBeis aqi Euyaiua sbB jo jib ppi aqi jo iph
sdwnd Suit pmlni Btnioo sfqttop
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