Mc lc

MC LCPhn th nht Nhng quy nh chung3I. Gii thiu chung.3II. ngha.3Phn th hai Quy trnh vn hnh4Chng 1 S nguyn l nhit v cc thit b chnh ca t myI. S nguyn l nhit ca t my ( Bn v VA1-FI-00002-M-G1-PFD-0101_C(11-30) HEAT & MASS BALANCE DIAG)4II. Cc thit b chnh ca t my.6Chng 2 Cc qu trnh din ra trong tuyn nc - ngng - hi7I. Qu trnh lu truyn hi, nc ca t my v thng s k thut7II. nh mc thng s ch nc, hi ca t my12III.T chc ch nc ca t my14Chng 3 X l iu chnh nc cp, nc ngng v nc l16I. X l iu chnh nc cp v nc ngng16II. X l iu chnh nc l23III. X lin tc v x nh k ca l hi ( Tham kho bn v 08-J0601-01P&ID BOILER BLOWDOWN SYSTEM)26IV. Thit b phn ly trong bao hi27V. Kh kh v ht kh khng ngng ra ngoi (Tham kho bn v VA1-DEC-00100-I-M1D-PID-1123)28Chng 4 Ch nc ha hc trong cc giai on vn hnh t my31I. Cc ch chung31II. Cng on chun b khi ng t my32III. Khi ng t my34IV.Vn hnh t my37V. Ngng my d phng hoc sa cha41VI. Cc bc x l khi ch nc, hi ca t my b vi phm42VII. Cc ch vi phm ca nc, hi v bin php khc phc42Chng 5 T chc iu chnh ha cht khi khi ng ch nc49I. Hng dn tng qut49II. Kim tra nh mc hm lng ha cht c trong mu nc, hi50III.Thit b t ng phn tch v kim tra hm lng ha cht c trong mu ( Tham kho bn v VA1-BWBC-00100-M-M1A-PID-15003-Model)51Chng 6 Bo qun thit b ca t my52I. Hng dn tng qut52II. Phng mn h thng l hi52III. Nhng cng vic cn phi thc hin khi t my ngng sa cha thit b56IV. Ngng thit b57

PHN TH NHT - NHNG QUY NH CHUNGI. Gii thiu chung.Nh chng ta bit trong nh my nhit in nc l ngun nhin liu ch yu sn xut ra hi phc v cho t my. Tu theo p lc ca l hi m quy nh tiu chun cht lng nc cp sao cho ph hp. L hi ca t my 600 MW-Nhit in Vng ng 1 Cng ty Nhit in Vng ng l loi l hi p lc cao do vy nc cp vo l c quy nh rt cht ch.Yu cu v cht lng nc ngng, nc cp v hi rt cao, m bo trong tuyn nc ngng (t bnh ngng n kh kh), tuyn nc cp (t kh kh n l hi), trong l, trong ng hi t l hi n tuabin, mi cht khng sinh ra mt lp bm cu no v khng gy ra g ng ng v thit b.Quy trnh nu ln nhng yu cu i vi ch x l nc ca t my, bng lit k cc s c c th xy ra khi x l Ho - Nc v cc bin php khc phc chng, cc phng php t chc v iu khin cp ho cht cc giai on x l ho nc, vn hnh iu khin cp ho cht bng tay v t ng, cc bin php t chc x l ch nc ( ch x l nc ngng, nc cp, nc l bng ho cht, ng thi kt hp vi ch x lin tc, x nh k ca l hi v cc phng php phng mn bo qun thit b nhit ca t my mi khi t my ngng vn hnh i tu, sa cha.II. ngha. vn hnh cc thit b nhit ca t my 600 MW Vng ng 1 c n nh, an ton v kinh t l ph thuc ng n trong cng tc t chc ch nc ca t my. Ch kim tra ho hc, x l nc, hi trong nh my nhit in l nhm- Ngn nga hin tng ng cu, cn trn cc b mt t, trong bao hi v cc thit b nhit khc ca t my, lm gim nng sut ca thit b v nh hng n sn xut an ton v lin tc- Ngn nga hin tng ng mui trong cc ng ng dn hi, cc tng cnh Tuabin cc h thng sy hi, cc sp pp ca t my do hi mang theo. Ngn nga qu trnh n mn do Oxy v CO2 trong cc thit b nhit. Cn c vo nhng yu cu trn, vic vn hnh x l nc, hi trong nh my nhit in phi tin hnh. Ly mu kim tra chnh xc cht lng nc, hi trong ton b h thng thit b nhit nh nc ngng, nc cp, nc l, hi, nc lm mt tun hon kn. Thc hin ch x l trong l, ch x bn sao cho ph hp, nng hiu sut cng tc ca t my v bo qun thit b vn hnh lu di.PHN TH HAI - QUY TRNH VN HNHCHNG 1 - S NGUYN L NHIT V CC THIT B CHNH CA T MYI. S nguyn l nhit ca t my ( Bn v VA1-FI-00002-M-G1-PFD-0101_C(11-30) HEAT & MASS BALANCE DIAG)T my 600MW - Nhit in Vng ng 1 c kiu l hi, Tuabin nh sau.L hi - Tuabin My pht in c cung cp Toshiba ca Nht Bn c cng sut 600 MW lm vic theo mt s khi c 3 xi lanh l cao p, trung p v h p.Tuyn hi ngng - ng nc ca s nhit trong chu trnh nhit bao gm cc thit b chnh sauTuabin Bnh ngng Bm ngng - Thit b gia nhit h p - Thit b kh kh Bm nc cp v bm tng p - Thit b gia nhit cao p L Hi Tuabin (Xi lanh cao p) L hi Tuabin (Xi lanh trung p v h p).Hi nc sinh cng c a v bnh ngng ngng thnh nc trong bnh ngng. T bnh ngng, nc ngng tuabin c thu hi v c bm ngng cp qua Ejector chnh, thit b lm mt hi chn tuabin v thit b ti nhit p sut thp ri n kh kh. Qu trnh ny kt thc tuyn ngng tuabin ca t my. Mi mt thit b trn tuyn nc ngng chnh c vng tun hon quanh n. b xung lng nc v hi b tn tht trong cc ng ng (ch yu l do x nh k v x lin tc l hi), ngi ta cp nc kh khong vo bnh ngng bng bm cp nc b sung t b d tr nc ngng c dung tch 300 m3. Sau khi kh kh nc c gia nhit trong thp kh kh (nc c loi b oxy ha tan v axit cacbonic) nc kh kh c cp n cc bm cp v bm tng p, cp vo tuyn cp ca t my p lc cao. Sau khi gia nhit nc gia nhit trong cc b gia nhit cao p 3, 2, 1, nc cp c cp thng vo l. Hi ngng ca b gia nhit cao p s 3 c a v kh kh. Nc cp c gia nhit qua b hm nhit 285 oC v p sut 188.3 bara theo hai ng chia i (tri v phi) ca b hm l hi. Nc c gia nhit trong b hm ri cp thng vo bao hi l hi. Qu trnh bc hi c thc hin trong h thng vch ng nc sinh hi ca l hi. H thng vch tng ng sinh hi ca bung t c+ Vch trc+ Vch sau+ Vch tri+ Vch phi Hn hp hi nc t vch ng sinh hi cp vo bao hi qua cc cyclon (c lp bn trong bao hi), m c phn ly v a li khoang nc ca bao hi, cn hi bo ha i qua h thng phn ly mt sng (ca chp) a n ng tip nhn hi nc. Nhit nc v hi bo ha trong bao hi l 365oC. Cc loi mui tch t trong bao hi xut hin trong qu trnh bc hi, c c c thi ra ngoi nh h thng x lin tc qua bnh gin n n b nc x. Hi bo ha t bao hi c a qua b sy qu nhit nng nhit hi qu nhit ln ti 541 oC, p sut 173.9 bara. iu chnh nhit hi qu nhit bng h thng phun nc cp v hi qu nhit. Hi qu nhit c lu lng inh mc 1853 tn/h vi p sut 173.9 bara v nhit 541oC theo ng ng dn hng i qua cc van iu khin v van stop vo xi lanh cao p ca tuabin. Hi nc sinh cng trong xi lanh cao p ca tuabin c quay tr li l hi gia nhit th cp nng nhit ln 541oC trong b gia nhit trung gian h p vi p sut 36.6 bara. Hi nc gia nhit th cp t l hi theo ng ng dn vo xi lanh trung p tip theo vo xi lanh h p ca tuabin. X nc ca phn on tuabin sau bnh gin n c a vo b phn ngng. Sau khi bnh gin n h p a vo b x c dung tch ., t c cc bm, bm n b d tr nc ngng s dng li trong chu trnh tun hon l hi. Khi nc x khng m bo cht lng th c th a chng n b cha ngm l hi sau dng bm chuyn bm v h thng x l nc thi trc khi thi b. Thit b x nc ca phn on l hi sau bnh gin n c a vo bnh tiu nc x. T y c cc bm x bm v h thng x l nc thi.II. Cc thit b chnh ca t my.Trong s nhit c cc thit b chnh sau1. L hiS lng2KiuThan phun, t trc tip, kiu t down-shot, tun hon t nhin, qu nhit trung gian mt cp, thng s cn ti hnNng sut hi ln nht1866 T/hThng s hi qu nhit175 kg/cm2 541oCNhit nc cp252.6oCiu chnh nhit hi qu nhitPhun nc cpiu chnh nhit hi ti nhitThay i lu lng khi bng tm chn dngNhin liu chnhThan cm s 5 vng Hng Gai Cm Ph2. TuabinKiuNgng hi, 4 thn ng trc: Mt thn cao p, mt thn trung p, hai thn h p, hai ca thot, by cp gia nhit hi nhit.Cng sut nh mc600 MWS lngHaiTc quay3000 v/phThng s hi chnh170 kg/cm2 /538oCThng s hi thot0.059 bar3. My pht inS lng2Cng sut600.000 KWH s cng sut0.85Tn s50 HzS vng quay3000 v/phutin p u cc20kVKiu lm mtHydro nc kt hpKiu kch thchTnh4. Bnh ngngKiuNgng hi b mt, cu to hai naS lng2 chn khng nh mc0.059Ngun nc lm mtNc binNhit nc lm mt vo25oCMc tng nhit nc lm mt8oCH s lm sch ng90%5. Bm nc ngng chnhS lng2Cng sut1506 m3/hp lc35 bar6. B gia nhit h p 5, 6, 7, 87. B kh kh8. B gia nhit cao p 1, 2, 39. B hm10. Bao hi11. B qu nhit12. B ti nhit

CHNG 2 - CC QU TRNH DIN RA TRONG TUYN NC NGNG HII. Qu trnh lu truyn hi, nc ca t my v thng s k thut2.1.1 Chu trnh hi trong s nhit ca t my 600 MW L hi (Bao hi)Hi mi (hi qu nhit) Xi lanh cao p ca TuabinHi ti nhit lnhL hi(b gia nhit trung gian h p) Hi ti nhit nngXi lanh trung p ca tuabinXi lanh h p ca tuabinBnh ngng2.1.2 Thng s k thut ca hi, nc khi t my vn hnh n nh Tuyn nc Nc ngng hi, lin kt ni tip vi nhau bng cc ng ng dn. Chng l cc thit b bao gm: Tuabin, bnh ngng tuabin, cc bm ngng, cc b gia nhit h p, bnh kh kh, cc bm nc cp v bm tng p, cc b gia nhit cao p, l hi, tuabin. Theo l trnh c thay i cc thng s ca chng nh p sut, nhit . Thnh phn pha tng ng vi tuyn ny c thay i thnh phn ca n v tnh cht phn nh nn trng thi tp cht ri vo tuyn dn. S thay i p sut v nhit theo chu trnh ca thit b nhit c c tnh sau.+ Nc ngng ti u y ca bm nc ngng chnhP = 13 atT = 36.6oC+ Nc ngng trc khi vo bnh kh khP = 11.5 atT = 131.4oC+ Nc kh khP = 10 atT = 182.4oC+ Nc cp ti u y ca bm nc cpP = 208.8 barT = 182.4oC+Nc cp sau b hm, trc khi vo bao hiP = 188.3 atT = 285oC+ Nc l hi v hi bo haP = 18.68 oCT = 360.46 oC+ Hi qu nhit (hi mi ti xi lanh cao p)P = 173.9 atT = 541oC+ Hi ti nhit lnh (hi sau khi sinh cng xi lanh cao p quay li l nhn nhit)P = 38.31 atT = 325 oC+ Hi qu nhit th cp (hi ti nhit nng ti xi lanh trung p)P = 36.6 atT = 541oC+ Hi vo xi lanh h pP = 10.26 atT = 160 oC+ Hi ra khi xi lanh h p vo bnh ngngP = 0.059 atT = 37oC2.1.3. Tp cht lt vo nc cp Nc cp ca l hi bao gm nc ngng tuabin v nc b sung b sung phn hao ht trong chu trnh nhit ca t my. Cc ngun nc cn li c trn ln vi nc cp l khng ng k, bi vy tt c cc cht tp trong nc cp c quy c gi l tp cht. Tp cht ny lt vo thit b nhit trong tuyn hi, bnh ngng, tuyn nc cp ca t my v trong qu trnh sn xut nc kh khong. Trong tuyn nc cp, ngng v tuyn hi, thit b nhn nhit c lm giu bng cc sn phm ca qu trnh n mn kim loi ch to ra chng. Ngoi ra chng cn lm thay i mt vi thng s ca nc nh pH v dn in. Do s ht khng kh vo qua phn khng chn kn trong phn chn khng ca ng dn kh, trong cha kh CO2 v do c s thay i m chng lin quan n s tng nhit trong tuyn ng. Lng nc lt vo tuyn ngng rt nh ( khong 10-5% lng hi) cho php bo ton ch s cht lng nc ngng trong mc hi qu nhit Nc cp b sung (nc kh khong t h thng x l nc) c hm lng tp cht t nhin dng mui ha tan, v nc ny a vo chu trnh tun hon nhit khi m nhit thp hn so vi nhit ca ng ng dn, b mt ca ng ng ny t hn ng k so vi b mt ca cc ng ng dn thuc tuyn ng nc ngng. Khi th nng tp cht trong dng sn phm n mn trong nc ny cn c ph mt lp ha cht. 2.1.4 Trng thi cc tp cht c trong nc l v hi Trong nc l, hi nc l mt dng ca nc cp. Bi v hi nc cha t hn ng k lng tp cht c trong l hi (nc l), s bin i hi nc km theo s tp trung cc tp cht. Nhng tp cht ny lt vo nc l cng vi nc cp. iu ni ln ti sao cc tp cht c tnh ha tan trong nc khng cao c th lng ng trn cc vch ng nhng ni m nng cc tp cht ln v d nh trn cc vch ng sinh hi.Cc tp cht d ha tan trong nc l c th lt vo hi theo hai ng+ Bng cc git nc l cun (hoc bay) theo hi nc, dn n cc ion ha tan trong nc l cng bay theo+ Kt qu ha tan trc tip ca tp cht trong hi nc Trong khi m hi nc ln tp cht c quy c thnh s ha tan cc git nc c th to nn lp ng trong b qu nhit. Tp cht ha tan bay the hi l nguyn nhn chnh to nn lp ng trong tuabin.Cc l hi vi p lc hi 180 at, c th ha tan cao nng axit silic. Nng axit silic trong nc l hi, s lm tng kh nng ha tan ca cc tp cht khc. Nh vy, sch ca hi nc ( nng ca cc tp cht trong hi) xc nh kh nng to nn lp ng trong b qu nhit, phn truyn hi ca tuabin. N ph thuc vo cc git nc cun theo hi v nng tp cht trong nc l, c bit l cc tp cht d ha tan trong hi Ngoi ra cht lng hi qu nhit khng t yu cu cn do cht lng nc cp dung iu chnh nhit ca hi. Vic iu chnh nhit ca hi qu nhit l bng cch phun nc cp vo hi qu nhit, cc ch s cht lng ca hi qu nhit ph thuc vo cht lng nc cp dung phun vo iu chnh nhit ca hi qu nhit2.1.5 iu kin xy ra qu trnh n mn thit b v ng ng ca t my n mn bn trong ng ng v thit b l hi din ra do tc ng trc ca nhit vo kim loi. Tc n mn s khng ng ngi khi trn b mt kim loi c bao ph mt lp mng mng n nh. Lp mng mng nh vy c gi l lp bo v v c to nn khi cc iu kin vn hnh c thc hin trong thi gian vn hnh khai thc thit b (chy th thit b ln u). Lp mng bo v b mt kim loi gi l Macnetic ( Fe3O4), lp mng bo v ny c to nn l lp bo v n nh vng chc nhit ny C hai dng n mn l n mn ton b v n mn cc b. n mn c xc nh theo kiu ph hy lp mng bo v ng thi hot ha cc tc nhn oxy ha trong cht in phn, r rng l s ha tan cc cht kh trong nc, cc cht oxy ha trong lc c cc iu kin tch chng ra khi dung dch. Cc tc nhn tch ra v d nh oxy, axit cacbonic, sunfit hydro. Cc tp cht trong nc dng ion lin kt cc phn t nc (ion hydrat thy ha c th dn ti n mn tng th. V d cc tc nhn oxy ha l Fe3+, hydro, nitrat. Nu nh mng bo v trn b mt kim loi b ph hy trn mt din tch khng ln v d cc vt hn, u ni hoc cc vng Hp th nhit mnh nht n nc trong cc vch ng th trn on ng b mt ny c th bt u b n mn vi t l cao hn so vi iu kin bnh thng n mn im mi ch. Vy cc iu kin ca s ph hy t tnh nhanh trn din rng b mt cng nhit c th xut hin han g tng th kim loi Kh nng din ra s han g trong qu trnh ph hy lm lp mng bo v trn b mt kim loi thit b v tuyn ng dn,trong cc iu kin lm vic dn n s tng nhanh han g. Nh th c xc nh bng nng hot ha ca cc tc nhn oxy ha trong cht in phn. han g d theo t l i vi gii hn pha trn do n nh bn vng ca Fe3O4 Ti mt im v t l n mn trung bnh, n mn ti ch l nguy him hn bi v n din ra trn b mt kim loi v c su ln to thnh vt lot, r lm kim loi b dt mng n mc khng cho php. S nguy him ny cn bao gm c trn y cc vt lot, nh vy cn c th tp trung ion sunfat v s lng tng ng hydro di nh hng ca chng lm tng rt nhanh su cc vt lot v lm gim dy ca vch ng kim loi. Do lm gim bn ca thit b Trong lc thit b ngng c th pht trin n mn ngng qua m gi l n mn ngng my. Dng n mn ny xy ra khi nng oxy cao trong cht in phn(lng oxy ha tan trong nc s tng ln khi nhit gim i) hoc khi tip xc vi khng kh ngoi mi trng m khi bn trong thit b tho cn nc. Lp mng Fe3O4 s b xy ha thnh Fe2O3 hoc han g. Cng n mn dng my qua m s cao hn nu m kh quyn tuyt i v dn in ca cht in phn (bao ph b mt kim loi ch ngng thit b) s tng ln. II. nh mc thng s ch nc, hi ca t my Vi mc ch lp nh mc thng s ch nc (Hm lng tp cht trong thit b nhit) l s ngn nga cc lp ng bn trong thit b trong cc ng ng dn v thit b ca tuyn dn hi, nc ca t my v gim ti a cng qu trnh n mn trong tuyn ng dn Lp nh mc thng s ch nc bao gm nh mc v cht lng nc b sung, nc ngng tuabin, nc cp, nc l, hi bo ha, hi qu nhit sau tt c cc thit b iu chnh nhit ca n (nc cp phun vo hi iu chnh nhit ). Tt nhin l cht lng hi bo ha t bao hi khng c xu hn hi qu nhit

1

2

CH TIU NH MC CH HI, NCT MY 600MW-VNG NG 1V tr ly muHng mc phn tch v ch tiu quy nh

0(gE/l)SiO2(g/l)Na+(g/l)H+(S/cm)CO2(g/l)O2(g/l)NH3(g/l)N2H4(g/l)pH(g/l)PO43-(mg/l)Fe2+(g/l)Cu2+(g/l)Cl-(g/l)SO42-(g/l)TOC(g/l)

u y bm nc b xung

u y bm nc ngng chnh10309.09.3

Nc ngng trc khi vo kh kh---

Sau kh kh trc cp ha cht- 9.0 v khng c phosphate trong l (ly mu nc l kim tra)- Tr s % x lin tc c xc nh sau khi cht lng nc cp n nh v hi nc trong phm vi nh mc Cc thit b phn tch mu t ng cn c a vo lm vic khng mun hn thi im cp hi n tuabin hoc hi c dn n ng ng dn hi chungKhi hi cp vo tuabin v u ni vi cc b gia nhit h p, gia nhit cao p gia nhit cho nc ngng v nc cp trong trng hp cht lng nc ngng km ( cng ln hn 1 gE/l th nht thit phi x nc ngng c cht lng km ra khi chu trnh. ng thi phi cp nc b sung vo bnh ngng, nc trong b cha nc kh kh x xung mt na bnh. X bnh ngng n khi cng nc ngng gim n 1gE/l. Hm lng Na v Si trong cn gi nh vy khng lm gim cht lng nc cp theo thng s ny Trong sut thi gian khi ng t my cn iu chnh cht lng nc ngng trnh lm gim cht lng nc cp. Nu cht lng nc cp b gim th cn phi iu chnh x Sau khi l khi ng vi thi gian ngng trn ba ngy th cht lng nc cp c nh gi theo hm lng Fe, Cu nm trong gii hn nh mc trong vng 1 ngyIV.Vn hnh t my 4.5.1. Theo s liu ca Ung B chnh lch cc thng s ca ch ha nc cho php tm thi trong thi gian nh sauTng cng trong nc ngng tuabin o = 0.5 1gE/l Khng qu 4hHm lng Na ca nc cp [Na+] > 10 g/l Khng qu 24hHm lng Na ca nc cp 5 g/l < [Na+] < 10 g/l Ln n 72hHm lng Na trong hi bo ha hoc hi qu nhit [Na+] > 10 g/l Khng qu 24hHm lng Na trong hi bo ha hoc hi qu nhit 5 g/l < [Na+] < 10 g/l Ln n 72hHm lng Si trong hi bo ha hoc hi qu nhit [SiO2] > 20 g/l Khng qu 24hHm lng Si trong hi bo ha hoc hi qu nhit 10 g/l < [SiO2] < 20 g/l Ln n 72h dn in cation H+ ca hi bo ha hoc hi qu nhit H+ > 0.5 S/cm Khng qu 72h pH ca hi qu nhit hoc hi bo ha < 5.5 Khng qu 24h Trong thi gian vn hnh ca l hi c ph ti th cn phi kim tra cht lng ca vt truyn nhit, cc ch x lin tc, x nh k, tng hm lng mui trong nc l, s thiu ht ha cht dc theo chiu di bao hi, nng dung dch lm vic, lng ha cht ph hp, nhit kim loi ng l hi, ng mui trong tuabin, nhit trong cc mu nc, mu hi Khi sai lch so vi ch s nh mc cht lng nc ngng, nc cp, hi th phi tin hnh phn tch li trnh nhm ln khi sai lch thng s cht lng nc v hi th cn thit phi phn tch li. iu ny lm tng ch s ca thng s trong vic tm kt qu sai lch Khi mu phn tch xc nh li ln 2 m kt qu sai lch vn nh ln 1 so vi ch s nh mc quy nh th cn phi nhanh chng tm ra nguyn nhn gy nn s c v iu chnh li ch ha nc ng thi bo co ngay vi ngi c trch nhim v xin kin c th cho ngng l hay tuabin Khi iu chnh ha cht cn tin hnh phn tch ng thi cng lc cc thnh phn. Khi iu chnh nh lng NH3 trong nc cp nn ch ti cc thng s nh tr s pH, kim, hm lng Axit Cacbonic v hm lng NH3 d, dn in Mt trong nhng mc tiu chnh ca vic t chc ch ha nc l lm tng ln nht c th cht lng nc cp ph hp vi cc thng s cho php nh hm lng Na, Fe Gim hm lng Na trong nc cp c th t c nh tng cng nc b sungMc bn ca nc cp do oxit kim loi c th c gim xung nh s duy tr n nh v tr s pH khi Amonia ha. Hiu qu vic t chc kh kh v ht kh khng ngng t thit b trao i nhit, ngn nga lt kh vo trong phn chn khng ca tuyn ng hi nc.Khi t my vn hnh th ch kim tra ha hc lun c duy tr theo quy nh- Kim tra cht lng ca nc b sung, nc ngng, nc cp, nc l, hi bo ha v hi qu nhit ti Panel mu phn tch bng tay v ti cc thit b phn tch mu t ng phn tch v i chng. Cng vic ny c thc hin bi nhn vin th nghim nhanh vn hnh h thng x l nc trong l v nhn vin t th nghim ha thuc khi ha. Kt qu phn tch bng tay v cc ch s o ti cc thit b phn tch t ng phi c ghi chp li- Lng x lin tc ca l hi c iu khin bi nhn vin vn hnh ca l my v trng kp ha quyt nh, ph hp vi ng h o lu lng trn ng ng x lin tc t 12 ln trong mt ca- Ch x nh k ca l hi do trng kp vn hnh ha quyt nh v nhn vin vn hnh l my thc hin- Mc chnh lch ha cht dc theo chiu di bao hi do nhn vin th nghim nhanh vn hnh x l nc trong l thc hin v tnh ton theo cng thc

Xp =

Trong Xp Mc chnh lch hm lng Si trong nc l (%)CSiO2max v CSiO2min Hm lng ln nht v nh nht ca axit Silic c trong nc l hi ti hai u ca bao hi mg/l chnh lch ny khng c ln hn 20% xc nh chnh lch ny nhn vin th nghim nhanh vn hnh h thng x l nc trong l khi ha phi trc tip ly mu phn tch bng tay ti Panel mu v tnh ton hoc tnh gin tip bng dn in S ng mui trong phn truyn hi ca tuabin do nhn vin vn hnh l my kim tra v tr s p sut trong cc mc kim tra tua bin gn vi thng s danh nh ca hi i qua thit b kim tra khng nh hn 1 ln/thng Nhit ca cc mu nc v hi c kim tra bi cng nhn vn hnh ca khi ha ti mi im mu ph hp lm mt n. Nu nhit ca mu cao hn 40oC th phi thng bo cho nhn vin vn hnh l my bit cn thit phi lm mt mu bng cch tng lu lng nc lm mt qua thit b lm mt4.5.2. Theo s liu ca Vng ng 14.5.2.1 Nc cp4.5.2.1.1 Hot ng bnh thngItemUnitLimit

Hardnessmol/L0

PH at 25C 8.89.3 (system with copper alloys)9.29.6 (system w/o copper alloys)

Dissolved oxygeng/L7

Iron (Fe)g/L15

Copper (Cu)g/L3

Silica (SiO2)g/L