ML20086B599
| ML20086B599 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 11/15/1991 |
| From: | Reckert R NORTHEAST UTILITIES, NORTHEAST UTILITIES SERVICE CO. |
| To: | Freund A CONNECTICUT, STATE OF |
| References | |
| D05048, D5048, NUDOCS 9111200281 | |
| Download: ML20086B599 (19) | |
Text
1 NORTHEAST UTILITIES o nere omce.. sewn saem. son.n; conn ci,cui J
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P O DOX 270 es ama *wa w~
HARTFORD, CONNECTICUT 06141-0270 L
t a C ", % 2 0 ' C R03) 6" November 15, 1991 D05048 Mr. Adrian Freund, Chief Bureau of Water Management Department'of Environmental Protection 122 Washington Street Hartford, CT 06106
Dear Mr. Freund:
Millstone Nuclear Power Station, Unit No. 2 Corrosion Control--Hydrazine Reduction The steam generators at Northeast Nuclear Energy Company's (NNECO) Millstone Nuclear Power Station, Unit No. 2, will be replaced during the next refueling outage, presently scheduled to begin in April 1992. -In order to protect the
- new steam generators and to reduce future corrosion problems, residual copper and corrosion products (i.e.,
iron oxide) must be removed from the system tubing and piping prior to installation of the new steam generators.
The current chemistry program for controlling corrosion is:
Chemical Concentration Boric Acid 5-10 ppm Ammonium Hydroxide 0.17 ppm Hydrazine
.03 ppm Blowdown from the steam generators, with the above concentrations, is dis-charged via DSN 001B-1 at -a flow rate of 50 gpm.
In order to remove residual copper on the tube and pipe surfaces,- the level of ammonia would have to be increased for a substantial amount of time.
As an al ternate, NUSCO, on behalf of NNECO, hereby proposes a short-term program under direction of the Electric Power Research Institute (EPRI) ' that will control corrosion and remove the residual copper and. corrosion products by using amines in place of ammonia and hydrazine.
The two amines to be used would be ethanolamine and diaminocthane.
Each would be used for a one-month period with the blowdown rate at 50 gpm. The chemistry program would be:
Chemical Concentration Boric Acid 5-10 ppm Amine 2.5 ppm
- ([1<260281 911115 ADOCK 0300r 6
DR
'//
Mr. Adrian Freund D05048/Page 2 November 15, 1991 The environmental benefits of using the amines include the possible elimina-tion of hydrazine as a corrosion control and reduction of corrosion product (iron oxide) discharge by a factor of 4.
Attached are the Material Safety Data Sheets for diaminoethane (commonly called ethylenediamine) and ethanolamine (commonly called monoethanolamine),
flow diagrams for amine distribution and system pH, and background information.
NUSCO hereby requests permission to use the amine chemistry at Millstone Unit No. 2 between January 1, 1992 and March 31, 1992.
The discharges affected are the steam generator blow down, DSN 0018-1, and condenser cooling water dis-charge, DSN 0018.
Should you have any questions, please call Mr. Thomas P. Arcari, NUSCO Genera-tion and Environmental l.icensing, at (203) 665-3713.
Very truly yours, NORTHEAST UTIL.lTIES SERVICE COMPANY As Agent for Northeast Nuclear Energy Company A
'A
/
RfA, Reckert' Vice President cc:
U.S. Nuclear Regulatory Commission Attention:
Document Control Desk Washington, DC 20555
lb "' *
MATERIAL SAFETY DATA SHEET CALGON CORPORATION
.bek.
It5urg A 15230-1346 24 Hour Emergency Telephone -- (412) 777-8000 j.
PRODUCT IDENTIFICATION PROOLK'T EME: Pre Tect 8000 CEDCCAL DESJLIFTICM: Aqueous alkyl erat.no solutice IL __FAZARD('U.S INGREQ1ENTS A@ EXPOSURE LIMITS
- s.
I by oret taso Dermat taso Acuta TtV Q.m.aligl M ass CAS ML W+121 tret)
_trabbit)
OSMA FY1
,+
540ek/kg 130 et/ha TWA 10 rpm.
Ethylenedianine 107-15-3 40 D b.!an e.b eL D86 111. TYPICALEiYSICAL PROEE_RJ_lES BOILING ICINT:
Not evetlable SOLUBILITY IN WATD : Cmpie te VAMR PRI.50tSit: 9 esaRg Il 66"r (for othylenediamine)
SITCITIC GAVITY:
0.96 VAKR LDSITY (eir=1):
>1 pH: 11.6 - 12.0 jf,47, R!AL RECEIPT VrTPCATICN
- ""*II" "' "E3C"T 0:te Rec'd
- .8*M Arrfxwcr wD <xou ctear cotorioss liquid ith -rr=ni. cat oer.
pp
-,ND A
c v. < w.
1 IV.
FIRE AND EXPLOSION HAZARD DATA o
S:khdt init. ^
TIASR PO!NT: - 150*F; This product 13 e combustible tipid.
EXT!NGJTSRING MIDIA: Use water sprey, tiry chemical, *elcohol" fome, or carbon dioxide.
SPECIJL FIRETIGHTING ikOCEDURI5:
T.zercise caution when fi5hting any chemical fire. A self-contained breathing apparatur and protective clothing are essential. Use water to keep fire-orposed containers cool.
UNUSUAL FIRE AND EXPLOGION EAZAR30: Emits toxic gases under fire ccnditicos.
NFPA RATINGS: Bealth = 3 flannability a 2 Reactivu y = 0 Special Bazard a HCHI While this information and rococreandations set forth herein are believed to be accu. rate es of the date hereof, CAllX)N CIPJGAf!ON HAXES WJ WARPANTY WITE RESPECT IIIRETO AND DISCLADtS ALL LIABIL11Y TRCN PILINCr TEDl!DN PCDS "o, Fre-Tect 8000 Page 1 of 4 Dete.
5/1/91
'N
. - - -. - ~ -...- _..
. -.. -. - ~-.
. ~..~-. - - - - _. -
)
4 4
4 V.
REACTIVITY-CATA CBDCCAL STA811.1Tf a Stable RA1ALDOUS PG.M3L11ATION: Will not occur,
. Cuart!TIGes TO Av0!D: Keep away from boet and flame.
Also, misture with oaldssing meterials, halogensted ortente Acida, copper or its allays.ccupounds, eldehydes, ketones, or scrylat.es may result in a te INCG fAtl81LITY:
tecrease.
Fitrogen oxides, carban sonoside, cariam dioside, and ammonie.
BAZ4tDOUS DICONFOSITICBI P9000Cf5:
VI. HEAL.TH HAZARD DATA f
and ingestion Eye end skin contact, skin absorpticm, inhalaticse, PRit%RY ROUTES G" DfTRY:
7ARGET G(CaAN5: Eye, skin, lung, liver, t idney Pre estating esthma, !!ver, and kidney disease.
MEDICAL C11FDIT1343 NXatAVATED ST EXF05URE+
DANGDtt May cause severe eye and skin damage.
Hey be hanaful af smallowed or it absorbed through skin.
Hay cause allergic respiratory reaction.
Hay cause allergte skin reaction, May cause respiratory tract irritation.
EFTECTS OF OVERIXF03URE:
a 6.211G Eye contact with this product may be estranely irritating and may cause corneel desag ETE CDetTACT:
Ethylenedinaine vapo.ro may also irritate the eye, This product would to erpected to seuse irritetton upon skin contact and e6ay ca l
f.
i SKIN CONTACT:
reddenit4, blistering and burns.
absorbed t.hrough the -ain in harmful esmute, d throat and may cause
, ' Ingestion may cause severe atritation of the enuth an INGESTION:
gastrointestinal irritaticas or ulceration, t
4tions are attainable and could be hasardous with e single Syvq)Lasa of T.xcessive vapr content:
Ethylenedismine vepts are irritating to the nosel passages. headache, distine INEA1ATIOMs orposure.
excessive overerposure include:Ethylenediseine vapors may cause respiratory sensitisa breath.
reaction in susceptible. individuals.
SUPM RONIC. CHPdflC liver og kidney Rapested or prolonged uverexposure to otbylenedimeine may cause den Anjury.
. cri.ly at doses which caused tosic ef fects to the mother.
not to interfere with reproduction,
. CARCINot;ZNICITY:
NTP:
No intredients listed p.
1 ARC No ingredients listed No ar4redients listed l
OSHA; l-Bealth.= 3-Flammanbility = 2 Reactivity = 0 Perocesal Protective Equipment = to be supplied by user dependtre un use corditions tecs RATimS:
Date: - S/1/91 Pete 2 of 4 PCDS Mo.
Pre-Tect 8000
[.
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APPLICABLE CONTROL HEASURES A.PPICilllATE BYGIENIC FRACTICES:
Do not get in eyan, on skin or clothing.
Do not breathe vapor or mist.
FEIL'ONAL FROTECTIVE EXAlliwyT, EH PIOTECTION:
Channical splash goggles
$3'IN tROf!CTICW: Face shield, chemical resistant gloves, and protective clothing ItISPIRATORY IPDTECTION: !! etrborno concentrations escoed published esposure limite, use e NIO'JI approved respireLot in accordance wit.h OSliA sospiratory putoction requiremente (29 CTk 1910,134 4.
WLEK ISACTICE,5t
. An eye wash statiod and safety shower shoukd be accessible in the tannediate aree.
ILANDLING AND ET7UCE 11ttrAUTI@$; Use cmly with adequate ventilation.
Wash thoroughly af ter hand 11rg.
Esep container closed when not in use.
Keep away frcue heat and flame, ENGINEERING CON 11KE.3: Local exhaust ventilation may be nec essary for sane operations.
Vill.
FIRST AID EYE CWTACT:
In case of contact, isrnedtately (tush eyes with plenty of water for at least 15 minutes,, Seek sedical eid tameds etely.
SK3M C0KfACT: In case of contact, tarneds etely flush skin wit.h plenty of watet for et least 15 minutes while renoving contaminated clothing and shoes. Seek medical and larnediately. Wash clothing before reuse.
INGLSTICH :
If swallowed, do NOT induce varaitire. Cave large quantitles of water, Eeek medical aid innediately. Never give anything by ocuth to an unconscious person, INHALATION:
It inhaled, reesve to fresh air.
If not treathina give artificial respAration. If breething is d!!ficult, give orYgen. Seek swdacal aid insnedtetely, IX.
SPILL OR LEAK PROCEDURES / WASTE DISPOSAL STEPS TO BE TAKIN IT MATERIAL IS RELEASED OR SPILLED: Ventilate area of spill. Remove sources of ignation.
l Wearing appropriate personal protective equipnant, contain spill, collect onto inert absorbent and place into suitable container, WASTI DISIUSAL: 'Dieposo of in accordance with local, state and f ederet regulatione, Avoid Jascharge to natural waters.
AQUATIC TCX1 CITY DATA (for othylenediamine'.
De$nia swana 1450:
0.89 mail Fathead minnow LCSO:
- 1000 mg/l I
l M S No.
h e-Tect 6000 rege 3 of.
Date: S/1/91 l
p' o
9 t
4 X.
REGULATORY STATUS (TSCA)
The ingredients of this product sie 18sted an the Tanic Substances Control Act T5CA STATU5:
Cheadcol Substanc es Itivant.ot7 It is the responsibility of the user to det. ermine et tAe time of misposal if the material RCRA STATUS:
moete RERA crit *ris for hasasdaus weste.
N.atify EPA of product spills CM A reportable quantity of EFA onceeding 12,500 pm.nds.
basardous substances in product; Chemicet = Ethylenedlemine StQ = S000 SAXA TITLE II!r Section 302 Extremely Besordous Substances CAS M 07 15-3 RO = 5000 T N = 10,000 Charnient - Ethylenediesnin, Section 311 and 312 Besith and Physical Essards:
lanadiate fieleyed Fire Fressure Reactivity lyes) treal tyeel (no I (no 1 Section 313 Toult Chemicals: None DOT CIAElf! CAT 20W:
Hasard Classt Corrosive motorial Carroelve liquid, N.O.S. (contains ethylenedtarnine)
Proper Shipping bene:
ID Number: 1118 1760 Label; Corrosive PREFAAED BY; Q D ioney FRITt000/AM
+
me Date. 5/1/91 P, age t of a PCDS Ho.*
Pre-fact 8000 l
l l
l t
t f
i l
MATERIAL SAFETY DATA SHEET CALGON CORPORATIOt1 P.O. Box 1346 CALG ON Pittsburgh, P A 15230-1346
$U651Dia33V Cf ML hC A & CO.. INC 24 Hour Emergency Telephone -(412) 777 8000 J.
PRODUCT IDENTIFICATION IS % ~T NAME: Pre *Tect 7000 CHIMICAL CESCRIITION: Alkaline aqueous solutaan 1
HAZARDOUS INGREDIENTS AND EXPOSURE LIMITS I by Oral LD50 Dermal LD50 AC4!!! TLV Chmic al N ams CAS No.
Weipht (rat) gabM t )
09RA FTL Honoethanoteasne 141-43-$
40 2050 mg/kg 1000 ms/km THA 3 Finn.
(
8 mg/a0 STEL 6 ria.
15 cc/m3 1
III. TYPICAL PHYSICAL PROPERTIES BOILING POINT:
Not available SOLUBILITY IN WATER: Cornpla te VAPCR PRESSURE: Not available SP!r1 TIC CRAVITY:
1.02 VAKR DENSITY (air =1):
Not available pH:
12.4 I VOLATILE BY hTIGET:
60 (water)
APPEAliANCE AND C0CR: Clear, colorless liquid with anrnoniacal-odor.
IV.
FIRE AND EXPLOSION HAZARD DATA FIASH l'OINT: > 200 F; This product la not flanrr.able or ccotaastible.
EXTINGUISEING MEDIA: Water sprey, dry chemical, " alcohol" fonn, or carbon dioxtde.
SPECIAL FIRITIGHTING TROCEDURES:
Exercise caution when fighting any thenaical fire. A self-contained breathine apparatus and protective clothing are essential. Use water to keep fire-erposed' containers cool.
L'NUSUAL r!RE AND EXI" OSION HAZARDS: Easts taxac gases under fire conditions.
NFPA RATINGS: Health = 3 riansnability = 0 Reactivity = 0 Special fla.ord - NONE While this information and recommendations set forth herein are believed to be accurate as of the date hereof.
CALCEN CDRMEATION HAKES NO WARRANTY WITH RESTECT !!IRETO AND DISCLAIMS ALL LIABILITY FRCH RELIANCE THIECN HSDS No.
62C4 Page 1 of 4 Dat e : 4/8/91 I
++
4-
+
1 V.
RE5CTIVITYDATA CHEM! CAL STABILITY: Stable tiAZARIOU3 19LWIIRIZATION: Will not occur CatDITIONS TO AVOID: Ovetheating IICOVATIBILITY: Strons exadisers, strong acids, alumanse:, copper
!!AZARDLXf3 DirOUUSITION 1%OCOCTS2 Ansami a, nit rosen caldes, cartum n;nus tda, and rarbon diostde VL HEALTH HAZARD DATA PRIMARY RCUTES OF ENTRY 1 Eye and skin contact, angestion, inhalation, sh tn absorpt ion TARCET ChrAN3 Eyes, lungs, liver, h adneys, skin, CNS, reproduc t ive syst.<n DANGI.R 1 May cause severe eye dunase.
May be haratal af smallowed May cause skin and respa ratory tract arritation EITECTS of OVfAEXFOSURE:
MUTE E'YE CONTA*T:
This product wuld be orpected to c ause severe irr n tation upon wn+.ac t wtth the eye and possibly pensanent damage.
SKIN CONTACT: This product could cause skin arritation, espectally upon protanned or repeated esposure. By Ost1A definition, pure samoothanolamine is tuztc by shtn absorption.
Prolonaed or widespread skin contact may result in the absorp. tun of harmful amounts of matettal. There la no evndence that amoothanolamine c an c ause alterat e contac t dormatitis.
INCESTION:
Bas M en the acute oral 1.050 for ethanolamtrie, this product would to considered to be allahtly tonic Ly ingestion. Swallowing the patxtuct may cause chantcal burns of the mouth, throat, esophague, and st4 mach, Or.her symptras (nutd include causea, vonta t t ne diarrhea, dissiness and drowsiness.
=
INHALATICW:
Breathird of product vapor or mast say cause traltation with coughing and dtscootfort 1n
~
the nose, throat and chest. In antant experiswnts, subacute high level esposures to othanotasine vapt and utst produced planonary damage, lethargy and strne nonspecif te degenerative changes in the liver and kidneys. Lab tests have found ethanotarnine to be e centr al nervous system stiniula.nt at low doses, and a CH3 depressant at lethal dosos.
Prolonged esposure to am>1erately high vapor concentrations may c ause local injury to the respiratory tract. However, the sensory arrttant property of ethanol unine vepts should give adequate warning of a ptent tel acute inhalation overesposur e s L tuation.
MGDS No 62C4 Page 2 of e Date 6/8/91
_ _..~ __
4 VI. HEALTH HAZARD DATA (continued)
MCf!v0NIC. C}UtONG No applicable information web found concerting any potentaal health ef fects resulting frus subchronic or chronte esposure to the product, in spite of ethanoimmine's wide use an industry, no reports of anjury to work ers have been found. Adverse reproductive e f f ects have t.een deraanst rated in r ats fed 500 rg/kg of et.hanolamine between day 6 and I$ of pregnancy.
CARCINCGENICITY; NTP:
No irgredients listed IAAC: No ingredients listed CCHA: No ingredients listed HMIS AATINUS: Health = 3*
Flamability = 0 Reactivity = 0 Forsonal f rotective Equignent a to be supplied by user dependir4 on use condittons
- There are potenttal chronic health ef fects to onsider.
. _ ~ _
l VII. APPLICABLE CONTROL M_fASURES l
AFPTOIRIATE HYCIENIC EACTICES: Do not get in eyes.
Avoid contact wLth sk in and clothths. Avoid breathing 1
vatur or mist, FIEONAL FROTECTIVE EQUllHENT:
TYE PROTECTICN: - Chemical splash go4&les SKIN PROTECTION: Chemical resistant gleves i
RESPIRATORY PROTECTION: If airborne concentrations exceed pub 1Lahad esposure Itmtts, use a NIOSH approved respirator sa accordance wtrb OCMA resparaton protection re*1uarewnts G3 CTR 1910.134)
WORK IRACTICES: An eye wash station should be availabla in the amediate area of use.
RANDLING AND ST MAGE )RECAUTIONS: Use with adequate ventilation.
Wash thoroughly after handlirg.
Keep container closed wnen not in use, ENGINEERING CONTROL 5; t.ocal exhaust ventilation may be required an additton to Eeneral room ventilatton.
(
I Vill.
FIRST AfD
- EYE CONTACT:
In case of contact, inanedtately flush eyes with plent,y of water for at least 15 minutes. Sees medical aid invneds ately.
SKIN CONTACT 5 In case of contact, flush skin with plenty of wates.
Renove contaminated clothing. Seelt tardital and &! irritation persists. Wash clothing lefore reuse j
INGESTION:
If swallowed. do NOT induc e vumitans. Give large quantation of water.
Seek medical aid l
1rrrned s at e ly.
Never gave anything by mouth to an unconscious person INHALATION.
If inhaled, tennve to fresh at t, If not breath.ang, s4ve artificial respiretton.
!! treatharp, as di f fic ult,, give orygen. Seek medical aid.
MSDS No.
62C6 Page 3 of 6 D a r.
- 4/8/91 l
y e
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.1x SPILL OR LEAKELOCEE.Ql!BfS/ WASTE _pjSPOSAL STEPS 70 BL' T AKEN !! MATERI A. IS FILEASED OR SPitMD: Wearing arrrcpriate personal protective equi pnent,
contain arall, collect ont o anert absorbent. and place into suttable contaaner.
~
WASTI O!SFOSAL: Dispose of in accordance with local, stat e and fedes al regulations.
. Avntd di schatge to natural waters,
'L RfGULATORY STALUS TSCA STAT 1]S:
'ho ingredser.ta of that product are lasted on the Toxic Substance s Cont rol Ac t (T3CA)
Chemical Substances Inventory, RCRA STATVS: This product, as sold would not be considered a RCPA Hazardous Wasta, CERC1.A rescriable quantity of IFA hasardous substances in product: None SARA TITLE !!!:
Section 302 Ert renely Hazar<tous Sube tances: Nona section 311 and 312 Healt.h arwi Physscal Hasards.
Isanedt ate Calayed Fire Pressure Reacttvsty (yes)-
(you)
(no )
(no I (no 1 Smetton 313 Tonar Chemica h: None DCT CLASS!TICATION:
Hasard Class: Corrosave material Proper shipping name: Moncetnanolem.tne salution ID neber UN 2491 Label: Corrosive
'FEIPARED BY: LJ _ Natonev 62C4/AK 1
MSDS No-E2C4 Page 4 of +
Date: 4/6/91
F
' Amine Distribution and. Mass Balance in Secondary System i
^
j N
I Steam 11,880,000 lb/h y
N NH3 = O.5 ppm; S.94 lb/h
,. M. s s
Morph = 5 ppm; 69.4 lb/h l
ETA = 1.6' opm; 17.8 lb/h i
MSR l,
BlowdQED 60,000 lb/h *2= 120,000lb/h
\\
NH3 = 0.17 ppm;-0.02 lb/h Morph = 4.5 ppm; 0.54 lb/h i
ETA = 2.42 ppm; 0.28 lb/h Condensate 7,920,000 lb/h HP Drains 3,980,000 lb/h NH3 = 0.67 ppm; 5.30 lb/h N #**
~
NH3 = 0.17 ppm; 0.87 lb/h h
- 9 3 Morph = 8.26 ppm; 32.7 lb/h 1
ETA = 3.5 ppm; 13.9 lb/h
((
, /;
l
's 7 I
Feedwater 12,000,000 lb/h,(,.
T
'~
T NH3 = 0.5 ppm; S.O lb/h I<-
Morph = 5.0 ppm; 80 lb/
L Polisher Removal I
ETA = 1.5 ppm; 18 lb/h g
NH3 = 141 eq/h j
Morph = 136 eq/h v
I I '
ETA = 28 eq/h Feed Rate NH3 = 5.3 lb/h Morph = 27.3 lb/h ETA = 4.1 lb/h
.g
-Secondary' System' pH at Temperature I
Feedivater ~ Concentrations:
/
/
l Ammonia = 0.5 ppm pH(25C)=9.19 Morpholine =5.0 ppm pH(25C)=9.07 g3 Ethanolamine=1.5 ppm pH(25C)=9.21 M S FL Blowdown 513 F 8
N p H(t)= 5.61
\\
[
'~
pH(t) NH3=5.73
\\
/
pK(t) Morph =6.00 Condensate 102 F
'1 pH(t) ETA =6.06 HP Drains 350 F N p H(t)=8.78 1:
N pH(t)= 5.71 pH(t) NH3 8.85 pH(t) NH3 8.15 pH(t) Morph =8.59 pH(t) Morph =6.65 pH(t) ETA =8.39 pH(t) ETA =8.72
{
l Feedwater 431 F
- NpH(t)=5.61 pH(t) NH3=6.08 II"[
pH(t) Morph =6.22 pH(t) ETA =6.17
_j V
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BACKGROUND l
- 1. The use of morpholine has resulted in decreased corrosion j
product transport at several PWR's. A twofold decrease is t y plcal, j
- 2. Although morpholine is an improvement over ammonia for controlling CP transport, there are some drawbacks to morpholine chemistry.
- High Feed Rate = High Cost
- Short polisher runs & inability to operate consistently past the ammonia break.
- 3. EPRI has been investigating amine compounds with properties superior to morpholine and has completed model 8
boiler tests on the most promising candidates.
- 4. The next phase of this research is to perform in-plant testing of one or more these amines. One utility has recently agreed to conduct in-plant testing.
- I
(
3 8
t i
lel e s
G Go o t
r s
% %acma 1
- 2. M M e
/ 0 %
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u S
5 3
s.
2 5
5 O
3 2
1 0
- a. g i e S e @ S llllI
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i
POTENTIAL BENEFITS
- 1. Decreased corrosion product transport Better protection of wet steam areas
- Lower sludge loadings in new steam generators
- 2. More ef ficier.t operation of condensate polishers Lower volatility results in lower input to polishers, resulting in less frequent regenerations l
- 3. Cost Savings
- Assuming morpholine and '
anolamine both costz$2/lb l
l Morpholine annual cost
$4/8,000 l
ETA annual cost S 72,000 Potential annual savings
$406,000
- The above does not include potential cost savings from L
less frequent cation resin regenerations which could be substantial, l
1
4 i
j SUGGESTED EPRI SUPPORT I
l I
- 1. Safety evaluation support i
- 2. Test plan development
- 3. Procedure roviolons i
- 4. Procurement of amine
- 5. Condensate polisher iasin testing and performance evaluatior
- 6. Data evaluu lon and report preparation
- 7. Ongoing support as needed.
---.----_.--_----,----_-_.--.--a._-.--
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OBJECTIVES i
Conduct in-plant testing of an alternate amine compound for secondary system pH control to evaluate the following:
t
- 1. Ef feet on corrosion produot transport i
- 2. Impact on condensate polishing j
- 3. Stability of-amine (breakdown rate) and possible decomposition products 1
- 4. Relative cost of operation compared to ammonia and morpholine
- 5. Operation for a brief time period without hydrazine addition:to eliminate the influence of ammonia and assess the oxygen scavenging capability of the amine,
&m a S uv4 P c " " d a b 4 *
- 9 > ' 4 4 0 d N A k
I
l CRITERIA FOR AMINE SELECTION l
l l
- 1. Base strength (pKb) at temperature:
- Lower pKb stronger base lower feed rate l 2. Low volatility (Kd)
- Better prottetion of wet steam areas (reduce erosion corrosion)
- Reduces amount to be removed by condensate polishers
- 3. Compatible with plant components
- Non-aggressive to elastomers, ' residual' copper, etc.
- 4. Compatible with condensate polisher resins
- Low sodium throw
- No adverse reactionr or degradation (bead strength, capacity, bead fracture, etc.)
12'?M..-..--
1
< l bj
- .U-v gs Table 1
- Comparison of Amines
/
n.
o.--
i~
- / ' 2s iso
- 300 2s iso ano ow @2ssc) u T ang
/
Fire; Choce. Has excellent det. rato, good pKb, Ethanolamrie 4.5 4.8 63 0.01 026 3.66
-0.7 No (1) Yes (2) 'ow decomo, reacify available. Iow desage req'd.
Second Choce. Excellent pKb but high decomp, 2-Amwio,2-Methyt only one vendor, dist. ratio hgher than dested.
Propanol (AMP) 43 4.7 5.9 0.00 035 0.89
-50 Yes Yes (2)
Good choce if Cu is not a problem. Exce5ent pKb, 1.2 Diamino Ethane 4.1 43 5.7 0.01 0.13 0.57
-23 i No 7
dist ratio, dome. Pnmary decomo. to ethanolamirm.
I For companson ordy. Poor pKb @ temp. Very poor I
Ammorua 48 52 6.7 30 9.55 331 0
Yes Yes drst. ratio. Low dosane is misleading.
For corrmosort. Athough an improvement over NH3.
Morpholine 5.5 53 6.5 0.12 0.78 1.28
-2 Yes Yes high dosage & less favorable dist. rato, than others.
- 1. Ethanotamine is a suspected breakdown product of morphoEne and is used in conrnon degreasers (10% by wt.)
+
..m