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10.1. Qun l h thng chng st
10.1.1. Yu cu chung
1. Qun l v s lng: Th+ng xuyn nm c s lng cc ph%ng tin,trang thit b chng st bao g#m: chng lo!i, s lng hin c, s tng gim vvic phn b trang thit b chng st *tt c cc i tr!m vi$n thng.2. Qun l v cht lng: Th+ng xuyn nm c tnh tr!ng k thut ca ccph%ng tin, trang thit b chng st t!i tt c cc tr!m vi$n thng.
10.1.2. Qun l h sk thut
1. H# s%lp tQun l ton b h# s% lp t bao g#m h# s% sau khi thi cng, nng cp, dichuyn v thc hin phng chng bo lt ca cc trang thit b chng st g#m:- Ti liu v thit k, thuyt minh thit k, bn v, hon cng, bin bn o thnghim thu ca cc trang thit b chng st sau khi thi cng, nng cp, di chuynv thc hin phng chng bo lt;- Thuyt minh k thut v cc trang thit b chng st s dng;- L lch trang thit b;- S tng hp s lng, cht lng, s tng gim cc trang thit b;- Cc vn bn quy nh v cc ti liu khc c lin quan.
2. H# s%bo dng, sa cha- H# s%bo dng, sa cha bao g#m ton b cc bin bn c lp khi tinhnh bo dng, sa cha. H# s%bo dng, sa cha phi c lu gi cngvi h# s%lp t v c cp nht trong my tnh.- Bin bn bo dng, sa cha bao g#m cc thng tin sau:
+ Ngy, gi+tin hnh bo dng, sa cha;+ Cc ph%ng tin, thit bo dng bo dng v sa cha;+ Nhng ng+i tham gia;+ Cc ghi nhn v tnh tr!ng trang thit b chng st nh trc tip, chng
st lan truyn;+ Cc d liu, kt qu bo dng v sa cha;+ Cc s liu thng k s c h hng;+ Cc gii php bo dng, sa cha thc hin.
Cc h# s%, s liu phi c bo qun c&n thn v th+ng trc t!i %n v khaithc thun tin cho vic qun l v phc v cho cng tc kim tra, bo dngv sau.
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10.1.3. Qun l cc trang thit b chng st trc tip
1. M-i khi thc hin kim tra, bo dng cc trang thit b chng st trc tipphi lp bin bn trong ph lc A. Sau khi bo dng phi ghi y thng tin,s liu vo cc mu bin bn, ghi l lch k thut v lu h# s%bo dng, sa
cha.
2. Thng k, kim tra s lng, cht lng, chng lo!i cc trang thit b chngst nh trc tip ang c lp t v d phng km cc chng ch. hp chu&nca Cc qun l cht lng Bu in - B Bu chnh vi$n thng.
10.1.4. Qun l cc trang thit b chng st lan truyn
1. M-i khi thc hin kim tra, bo dng cc trang thit b chng st lan truynphi lp bin bn trong ph lc A. Sau khi bo dng phi ghi y thng tin,
s liu vo cc mu bin bn, ghi l lch k thut v lu h# s%bo dng, sacha.
2. Thng k, kim tra s lng, cht lng, chng lo!i cc trang thit b chngst lan truyn ang c lp t v d phng km cc chng ch. hp chu&n caCc qun l cht lng Bu in - B Thng tin v truyn thng.
10.2. Qun l h thng tip t
10.2.1. Yu cu chung
1. Qun l v s lng: Th+ng xuyn nm c s lng cc ph%ng tin,trang thit b tip t bao g#m: chng lo!i, s lng hin c, s tng gim vvic phn b trang thit b tip t *tt c cc i tr!m vi$n thng.2. Qun l v cht lng: th+ng xuyn nm c tnh tr!ng k thut ca ccph%ng tin, trang thit b tip t t!i tt c cc tr!m vi$n thng.
10.2.2. Qun l h sk thut
1. H# s%lp t
Qun l ton b h# s% lp t bao g#m h# s% sau khi thi cng, nng cp, dichuyn v thc hin phng chng bo lt ca cc trang thit b tip t g#m:- Ti liu v thit k, thuyt minh thit k, bn v, hon cng, bin bn o thnghim thu ca cc trang thit b tip t (s liu in tr*sut ca t, in tr*tip t...) sau khi thi cng, nng cp, di chuyn v thc hin phng chng bolt;- Thuyt minh k thut v cc trang thit b tip t s dng;- L lch trang thit b;
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- S tng hp s lng, cht lng, s tng gim cc trang thit b;- Cc vn bn quy nh v cc ti liu khc c lin quan.
2. H# s%bo dng, sa cha- H# s%bo dng, sa cha bao g#m ton b cc bin bn c lp khi tin
hnh bo dng, sa cha. H# s%bo dng, sa cha phi c lu gi cngvi h# s%lp t v c cp nht trong my tnh.- Bin bn bo dng, sa cha bao g#m cc thng tin sau:
+ Ngy, gi+tin hnh bo dng, sa cha;+ Cc ph%ng tin, thit bo dng bo dng v sa cha;+ Nhng ng+i tham gia;+ Cc ghi nhn v tnh tr!ng ca cc t tip t, cc mi ni, lin kt vtip t bn trong nh tr!m;+ Cc d liu, kt qu bo dng v sa cha;+ Cc s liu thng k s c h hng;
+ Cc gii php bo dng, sa cha thc hin.
Cc h# s%, s liu phi c bo qun c&n thn v th+ng trc t!i %n v khaithc thun tin cho vic qun l v phc v cho cng tc kim tra, bo dngv sau.
10.2.3. Qun l h s, s liu cc t tip t chng st, tip t cng tc vtip t bo v
1. M-i khi thc hin kim tra, bo dng cc t tip t phi lp bin bn trong
ph lc A. Sau khi bo dng phi ghi y thng tin, s liu vo cc mubin bn, ghi l lch k thut v lu h# s%bo dng, sa cha.
2. H# s%, s liu ca cc t tip t.a) i vi tr!m vi$n thng c m!ng tip t c thc hin b*i s lin kt cch thng tip t c lp c cc chc nng khc nhau phi c h# s%lu v cc ttip t bao g#m:+ T tip t chng st cho ct anten;+ T tip t vi$n thng thc hin chc nng tip t cng tc v tip t bo vcho thit b vi$n thng;
+ T tip t chng st cho nh tr!m.b) i vi tr!m vi$n thng c m!ng tip t l mt h thng tip t duy nhtdng chung cho cc chc nng khc nhau phi c h# s%v t tip t chung catr!m vi$n thng.
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10.2.4. Qun l cu hnh u ni v tip t bn trong nh trm vin thng
1. M-i khi thc hin kim tra, bo dng cu hnh u ni v tip t bn trongnh tr!m vi$n thng phi lp bin bn trong ph lc A. Sau khi bo dng phighi y thng tin, s liu vo cc mu bin bn, ghi l lch k thut v lu h#
s%bo dng, sa cha.
2. Cc lo!i s%# cu hnh u ni v tip t bn trong nh tr!m vi$n thng:- S%# m!ng lin kt chung (CBN) bn trong nh tr!m;- S%#u ni v tip t cc h thng thit b bn trong nh tr!m theo ccm!ng lin kt MBN, M-IBN, SBN, S-IBN hoc kt hp cc m!ng lin kt trn.
10.3. Bo dng h thng chng st
10.3.1. Yu cu chung
Bo dng h thng chng st phi thc hin y cc d!ng bo dng sau:- Bo dng nh k/.- Bo dng t xut.
1. Bo dng nh k/Su thng mt ln phi kim tra h thng chng st trc tip (c phn thu st
v dn st).Su thng mt ln phi kim tra cc thit b bo v chng st lp t trn
+ng dy thng tin v +ng in li.
2. Bo dng t xutBo dng t xut khi c nhng s kin sau:- Sau khi b st nh;- Sau cc trn bo;- Sau khi sa cha cng trnh hoc thay i thit b;- Khi c s thay i lin quan n vng bo v ca in cc thu st
Bo dng phi c thc hin vo th+i im khng c dng st v lu lngthng tin thp nht.
10.3.2. Bo dng cc trang thit b chng st trc tip
10.3.2.1. Cng tc chu&n b
- Kim tra, xem xt l!i h# s%, s liu phc v cng tc bo dng cc trang thitb chng st trc tip.
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- Cc tiu chu&n, quy ph!m dng kim tra, i sot: TCN 68-141:1999 "Tipt cho cc cng trnh vi$n thng - yu cu k thut", TCN 68-174:1998 "Quyph!m chng st v tip t cho cc cng trnh vi$n thng", TCN 68 - 135:2000"Chng st bo v cc cng trnh vi$n thng";- Cc bn v, thit k ca h thng chng st trc tip;
- Cc bn v, k thut th hin cc mt chiu ca nh tr!m, ct an ten.- Dng c v thit bo kim bo dng g#m c:+ #ng h# v!n nng+ Cc dng c cn thit nh my nh, km, c+l, chi st, giy rp,v.v.
9.3.2.2. Bo dng cc trang thit b chng st nh trc tip kiu Franklin
1. Kim tra nh tnh1.1. Kim tra xem c cc kt cu hay thit b nh: bin qung co, anten,
cng trnh xy dng,v.v. c lp t, xy dng mi c nm trong vng bo v
ca kim thu st khng.1.2. Kim tra cc in cc thu st xem c du hiu chy, r- hay b chy rakhng. #ng th+i xem c du hiu cong, nghing hoc gy cc in cc thu st.
1.3. Kim tra cc dy lin kt, dy dn trn mi, dy thot st xem c bthay h h!i khng.
1.4. Kim tra cc chi tit cnh cp thot st xem c b h hng hoc b mtkhng, m bo cc chi tit cnh cch nhau t 1m n 2 m. #ng th+i kimtra cc mi ni xem c du hiu b lng hoc bn mn khng.
1.5. Kim tra v ghi l!i s ln st nh vo h thng chng st thng qua bm st (nu c) vo s theo di phc v cho cng vic kim tra, bo dng
v sau.1.6. Nu s dng ng bo v cho dy thot st phi m bo tt c cc ngbo v ca dy thot st c lp t ng v tr v khng b h hng. Nu lng kim lo!i phi lin kt dy thot st vi ng t!i .nh v y ca ng.
2. Kim tra nh lngo tnh lin tc vin ca cc lin kt lin quan n h thng chng st
nh trc tip s dng kim thu st Franklin. c bit l cc lin kt ngm khngth kim tra bng mt (v d: gia dy thot st vi h thng in cc tip t,gia in cc thu st vi thp kt cu nh tr!m,v.v.)
3. Nhng cng vic cn thc hin sau khi kim tra3.1. Cc kt cu hay thit b lp t nm ngoi vng bo v ca kim thu st
cn phi c di chuyn hoc b sung, nh v l!i cc kim thu st m bo tonb cc kt cu hay thit b ca tr!m vi$n thng nm trong vng bo v ca kimthu st.
3.2. Tt c cc in cc thu st, chi tit cnh, dy thot st b h hngnghim tr0ng phi c thay th.
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3.3. Cc kim thu st b cong, nghing hay bin d!ng cn phi c iuch.nh, sa cha l!i.
3.4. Cc chi tit cnh hoc cc kt ni b lng, tut, mt hoc bn mnphi c vn cht, hn ni l!i, b sung thm v bo v chng n mn.
4. Ghi bin bn bo dng
- Ghi l!i cc sai st, h hng vo Bin bn bo dng cc trang thit bchng st trc tip nh trong ph lc G
- Ghi l!i cc cng vic sa cha thc hin vo bin bn bo dng.- Nhng sai st, h hng cha th sa cha ngay phi c ghi vo bin bn
sai st, h hng nghim tr0ng trong ph lc G.- Lp bin bn kim tra, nh gi s tun th cc quy ph!m, tiu chu&n, quy
nh ca Ngnh v tip t- chng st theo mu bin bn trong ph lc G.
10.3.2.3 Bo dng cc trang thit b chng st nh trc tip kiu pht tin !osm.
1. Kim tra nh tnh1.1. Kim tra xem c cc kt cu hay thit bc lp t hoc xy dng
thm khng, v d nh bin qung co, anten, cng trnh xy dng,v.v. Nu c,kim tra xem chng c nm trong vng bo v ca kim thu st khng.
1.2. Kim tra in cc thu st xem c du hiu b lm hoc h hng c%khhay khng. #ng th+i kim tra .nh kim thu st xem c b mt hay bin d!ngkhng.
1.3. Kim tra h thng trkim thu st xem c cn cnh chc chn vocng trnh kin trc hay khng v c b cong nghing hay bin d!ng khng. Nugn trn to nh, kim tra dy no xem c cn chc chn v c du hiu h hngkhng.
1.4. Kim tra dy (cp) thot st xem c b try xc, h hng khng (hhng do st, qun l khng c&n thn, ho!t ng ph ho!i hoc cc nguyn nhnkhc) nhm m bo kh nng thot st xung t an ton khng gy nguy himcho con ng+i v thit b.
1.5. Kim tra v ghi l!i s ln st nh vo h thng chng st thng qua bm st vo s theo di phc v cho cng vic kim tra, bo dng v sau.
1.6. Kim tra cc chi tit cnh cp thot st xem c b lng hay mt khngv m bo khong cch gia cc chi tit t 1m n 2m.
2. Kim tra nh lngo tnh lin tc vin ca cc lin kt lin quan n h thng chng st
nh trc tip kiu pht tin !o sm, c bit l cc lin kt ngm khng thkim tra bng mt (v d: gia dy thot st vi h thng in cc tip t, giain cc thu st vi thp kt cu nh tr!m,v.v.).
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3. Nhng cng vic cn thc hin sau khi kim tra3.1. Cc kt cu hay thit b lp t nm ngoi vng bo v ca kim thu st
cn phi c di chuyn hoc b sung, nh v l!i cc kim thu st m bo tonb cc kt cu hay thit b ca tr!m vi$n thng nm trong vng bo v ca kimthu st.
3.2. Cc in cc thu st nu c du hiu b lm, h hng c%kh hoc .nhkim thu st b mn nhiu h%n 6 mm do st nh nhiu ln cn phi c sacha hoc thay th.
3.3. Cc trkim thu st b cong, nghing hay bin d!ng cn phi ciu ch.nh, sa cha l!i.
3.4. Cc gi kim thu st v dy no b tut, t, h hng phi c gia c,sa cha.
3.5. Cc dy (cp) thot st nu b try xc, h hng phi c sa chahoc thay th.
3.6. Cc chi tit cnh cp thot st nu b lng, mt phi c vn cht, b
sung thm m bo cnh chc chn cp thot st.
4. Ghi bin bn bo dngGhi bin bn bo dng t%ng t nh 10.3.2.2 mc 4
10.3.2.4. Bo dng cc trang thit b chng st nh trc tip kiu phn tnnng lng st
1. Kim tra nh tnh1.1. Kim tra xem c s b sung thit b hoc kt cu nh lp t anten, xy
dng nh tr!m,v.v. nm ngoi vng bo v ca cc in cc phn tn nnglng st khng.1.2. Kim tra cc in cc phn tn nng lng st xem c du hiu h hng
c%kh khng.1.3. Kim tra h thng trin cc phn tn nng lng st xem c cn c
nh chc chn vo cng trnh kin trc khng v xem c du hiu cong,nghing hay bin d!ng khng.
1.4. Kim tra cc dy dn in tch xem c du hiu h hng khng (h hngdo qun l khng c&n thn, ho!t ng ph ho!i hoc cc nguyn nhn khc),kim tra xem chng c c lin kt chc chn, lin tc vin vi b tp trung
in tch trong t khng.1.5. Kim tra cc chi tit cnh dy dn in tch xem c b h hng hoc bmt khng, m bo cc chi tit cnh cch nhau t 1m n 2 m. #ng th+ikim tra cc mi ni, lin kt xem c du hiu b lng hoc bn mn khng.
2. Kim tra nh lngo tnh lin tc vin ca cc lin kt lin quan n h thng chng st
nh trc tip kiu phn tn nng lng st, c bit l cc lin kt ngm khng
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th kim tra bng mt (v d: gia dy thot st vi h thng in cc tip t,gia in cc thu st vi thp kt cu nh tr!m,v.v.)
3. Nhng cng vic cn thc hin sau khi kim tra3.1. Cc kt cu hay thit b lp t mi nm ngoi vng bo v ca in cc
phn tn nng lng st cn phi c di chuyn hoc b sung, nh v l!i ccin cc phn tn nng lng st m bo ton b cc kt cu hay thit b catr!m vi$n thng nm trong vng bo v ca in cc thu st.
3.2. Cc trin cc thu st nu b cong, nghing hay bin d!ng cn phic iu ch.nh, sa cha.
3.3. Cc dy dn in tch nu b try xc, h hng phi c sa cha hocthay th.
3.4. Cc chi tit cnh dy dn in tch nu b lng, mt phi c vn chtl!i, b sung thm m bo cnh chc chn cc dy dn in tch.
4. Ghi bin bn bo dngGhi bin bn bo dng t%ng t nh 10.3.2.2 mc 4
10.3.3. Bo dng cc trang thit b chng st lan truyn
10.3.3.1. Cng tc chu&n b
- Kim tra, xem xt l!i h# s%, s liu phc v cng tc bo dng cc trang thitb chng st lan truyn.- Cc tiu chu&n, quy ph!m dng kim tra, i sot: TCN 68-141:1999 "Tip
t cho cc cng trnh vi$n thng - yu cu k thut", TCN 68-174:1998 "Quyph!m chng st v tip t cho cc cng trnh vi$n thng", TCN 68 - 135:2000"Chng st bo v cc cng trnh vi$n thng".- S%# lp t thit b chng st.- Dng c v thit bo kim bo dng
+ #ng h# v!n nng+ Cc dng c cn thit nh my nh, km, c+ l, cc dng c v sinh
cng nghip,v.v.
10.3.3.2. Bo dng cc trang thit b chng st lan truyn trn +ng in li.
1. Kim tra nh tnh1.1. Kim tra tnh tr!ng ho!t ng ca thit b ct st (bo v s%cp) v ct
l0c st (bo v th cp) thng qua h thng n hin th (nu c).1.2. Kim tra cc modul bo v chng st xem c b hng do st c c+ng
ln h%n kh nng ca modul bo v hoc qu tui th0 phc v khng (tui th0s dng cn c theo th+i gian lp t v quy nh ca nh sn xut).
1.3. Kim tra iu kin mi tr+ng lp t ca thit b chng st nh:
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- Khi, h%i nc, bi b&n;- &m;- Nhit ;- Rung ng.
1.4. Kim tra cc mi ni, lin kt, cc chi tit lp rp ca thit b chng st
v cht, n mn v h hng c%kh.1.5. Kim tra s lp t, u ni cc dy pha v dy ni t thot st ca thitb theo quy nh trong TCN 68-174:1998 v theo s hng dn ca nh snxut.
2. Kim tra nh lngo tnh lin tc vin ca dy ni t thot st t cc thit b chng st ti
tm tip t bng #ng h# v!n nng.
3. Nhng cng vic cn thc hin sau khi kim tra
3.1. i vi thit ct st v ct l0c st hin th tnh tr!ng ho!t ng bng cnhbo hoc khng cnh bo, cn phi thay th thit b mi nu n hin th tnhtr!ng ho!t ng *tr!ng thi cnh bo.
3.2. i vi thit b ct st v ct l0c st hin th tnh tr!ng ho!t ng bngcc n hin th, cn thay th thit b mi khi sn hin th cn phn trm sngdi mc quy nh ca nh sn xut nhm m bo kh nng bo v cao (thngth+ng l 60%).
3.3. Cc mdul bo v chng st nu b hng do st hoc qu tui th0 phc vcn phi thay th ngay v chng khng th phc h#i hay sa cha c.
3.4. Cc u ni ca dy ni t, cc dy pha v cc chi tit lp rp thit b ct
st v ct l0c st nu b lng, tut cn phi c ni, xit cht l!i chc chn.3.5. Thc hin v sinh cng nghip vi tt c cc thit b chng st. Nu v trlp t c &m ln h%n 95%, nhit ln h%n 65oC, nhiu khi, h%i nc vbi b&n hoc rung ng ln phi di chuyn v tr lp t ca thit b ti v tr!tyu cu. Khi di chuyn, lp t thit b phi tun th quy nh trong TCN 68-174:1998 v cc hng dn ca nh sn xut.
3.6. Cc dy t khng ng kch c(tit din dy < 50 mm2), qu di hocu t sai phi c thay th v u ng theo quy nh trong Tiu chu&nngnh v theo hng dn ca nh sn xut.
4. Ghi bin bn bo dng- Ghi l!i kt qu kim tra vo Bin bn bo dng cc trang thit b chng stlan truyn nh trong ph lc G.
- Ghi l!i cc cng vic sa cha thc hin vo bin bn bo dng.- Nhng sai st, h hng cha th sa cha ngay phi c ghi vo bin bn
sai st, h hng nghim tr0ng nh trong ph lc G.- Lp bin bn kim tra, nh gi s tun th cc quy ph!m, tiu chu&n, quy
nh ca Ngnh v tip t- chng st theo mu bin bn trong ph lc G.
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9.3.3.3. Bo dng cc trang thit b chng st lan truyn trn +ng dy thngtin
1. Kim tra nh tnh1.1. Kim tra cc thit b bo v chng st xem c b hng do st c c+ng
ln h%n kh nng thit b bo v hoc qu tui th0 phc v khng (tui th0 sdng cn c theo th+i gian lp t v quy nh ca nh sn xut).1.2. Kim tra cch thc u ni ca cc thit b chng st vo cp anten
feeder, cp trung k v +ng dy thu bao.1.3. Kim tra cch thc u ni tip t, kch thc dy ni t.1.4. Kim tra iu kin mi tr+ng lp t ca thit b chng st nh:
- Khi, h%i nc, bi b&n;- &m;- Nhit ;- Rung ng.
1.5. Kim tra cc mi ni, lin kt, cc chi tit lp rp ca thit b chng stv cht, n mn v h hng c%kh.
2. Kim tra nh lngo tnh lin tc vin ca dy ni t thot st t cc thit b chng st ti
tm tip t bng #ng h# v!n nng.
3. Nhng cng vic cn thc hin sau khi kim tra3.1. Nu b chng st b h hng do st c c+ng ln hoc qu tui th0
phc v cn phi thay th ngay v chng khng th phc h#i hay sa cha c.
3.2. Tr+ng hp u ni sai khng ng yu cu ca Tiu chu&n ngnh vhng dn ca nh sn xut phi thc hin u ni l!i.3.3. Tr+ng hp cc dy ni t khng ng kch c(tit din dy < 10 mm2)
hoc qu di phi c thay th bng dy ni t c kch c!t yu cu, cngngn v th"ng cng tt.
3.4. Thc hin v sinh cng nghip vi tt c cc thit b chng st. Nu v trlp t c &m ln h%n 95%, nhit ln h%n 60oC, nhiu khi, h%i nc vbi b&n hoc c rung ng ln phi di chuyn v tr lp t ca thit b ti v tr!t yu cu. Khi di chuyn, lp t thit b phi tun th quy nh trong TCN68-174:1998 v cc hng dn ca nh sn xut.
3.5. Cc u ni ca dy ni t, u ni vi cp v cc chi tit lp rp thit bbo chng st nu b lng, tut cn phi c ni, xit cht l!i chc chn.
4. Ghi bin bn bo dngGhi bin bn bo dng t%ng t nh 10.3.3.2 mc 4
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10.4. Bo dng h thng tip t
10.4.1. Yu cu chung
Bo dng h thng tip t phi thc hin y cc d!ng bo dng sau:
- Bo dng nh k/.- Bo dng t xut.
1. Bo dng nh k/- Mt thng mt ln kim tra cc mi ni, lin kt bng cch xit cht l!i c vtni dy dn ti tm tip t chnh v tm tip t ca tng tng, tm tip t cagi my, gi phi tuyn, v.v.- Su thng mt ln phi o kim tra cc t tip t.- Su thng mt ln phi kim tra cu hnh u ni v tip t bn trong nhtr!m.
2. Bo dng t xutBo dng t xut khi c nhng s kin sau:- Sau khi b st nh;- Sau cc trn bo;- Sau khi sa cha cng trnh hoc thay i thit b;- Khi c s thay i lin quan n mt bng c h thng tip t (o bi, lpt +ng ng, tr#ng cy, tr#ng ct, lm nh,v.v.)
Bo dng phi c thc hin vo th+i im khng c dng st v lu lng
thng tin thp nht.10.4.2. Cng tc chun b
- Kim tra, xem xt l!i h# s%, s liu phc v cng tc bo dng cc trang thitb tip t.- Cc tiu chu&n, quy ph!m dng kim tra, i sot: TCN 68-141:1999 "Tipt cho cc cng trnh vi$n thng - yu cu k thut", TCN 68-174:1998 "Quyph!m chng st v tip t cho cc cng trnh vi$n thng".- Cc bn v, thit k hoc bn v, phc ho! cc t tip t (th hin y v tr
ca cc in cc tip t, v tr b tt, v tr cp dn t, lin kt gia cc incc...).- Cc bn v, ca cu hnh u ni v tip t bn trong nh nh tr!m vi$n thng(Cc bn v,c cp nht mi nht hoc v, phc h0a).- Yu cu v dng c v thit bo kim bo dng
+ My o in tr*tip t v in tr*sut ca t, #ng h# v!n nng.+ Cc dng c cn thit nh my nh, km, c+l, giy rp,v.v.
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10.4.3. Bo dng cc t tip t
1. Kim tra nh tnh1.1. Kim tra tt c cc mi ni tip cn c trn mt t lin quan n cc
in cc tip t. Cn phi kim tra cc kt ni ngm di mt t t nht t!i
mt v tr, in hnh l t!i v tr b tt (v d ca cc kt ni ngm ny l mini cp dn t vi in cc tip t, mi ni gia dy thot st vi in cc tipt, gia in cc tip t vi dy ni lin kt,v.v.) xc nh tnh tr!ng chungca cc mi ni. c bit xem xt k tt c cc mi ni v cht, tnh tr!ng nmn v cc h hng c%kh (Chp nh thy r bn cht v s dng lm tiliu theo di).
1.2. Kim tra v ghi l!i nhng thay i hoc b sung, nng cp ca cc ttip t t sau ln kim tra trc.
1.3. Kim tra v ghi l!i cc thay i lin quan n mt bng c h thng tipt nh: thay i +ng x, khu vc - xe, rnh thot nc, o bi,v.v. c th
l nguyn nhn lm thay i in tr*tip t v sau.
2. Kim tra nh lng2.1. o in tr*tip t ca cc t tip t- i vi t tip t c b tt, ni trc tip my o vi in cc tip t
hoc cp dn t trong b tt. p dng ph%ng php o nh m t trong phlc D.
- i vi t tip t khng c b tt, ni my o vi cc vt dn t nhcp dn t, tm tip t chnh, dy dn t ca t phn phi in, dy thot stct an ten hoc thp kt cu cng trnh. p dng ph%ng php o nh m t
trong ph lc D.- c kt qu chnh xc cn o 2 n 3 hng, trnh cc hng c cngtrnh ngm bn di nh+ng ng nc, +ng cp in lc, cp vi$n thng,cc kt cu kim lo!i ngm,v.v. v ly gi tr trung bnh ca cc kt quo c.
2.2. o kim tra lin kt cn bng in th gia cc t tip t.o in tr* tip t ca t tip t vi$n thng v ca ct an ten s dng
hng o, khong cch v ph%ng php o ging nhau. So snh tr sin tr*tip t ca t tip t vi$n thng vi t tip t ct an ten kim tra lin ktcn bng in th gia chng. Cc tr so c xp x. bng nhau th cc t tipt lin kt cn bng in th vi nhau. Nu khng chng cha c lin kt
cn bng in th vi nhau.3. Nhng cng vic cn thc hin sau khi kim tra
3.1. Tt c cc mi ni, lin kt tip cn c trn mt t lin quan n ttip t nu pht hin ra sai st, h hng phi c sa cha ngay (v d nh:vn cht l!i, lm s!ch b mt, thay th cc u ni v k1p, lm l!i lp v hocs%n bo v,v.v.)
3.2. Vin tr*tip t
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a) Tr+ng hp thay i in tr*tip t.- in tr* tip t m ln h%n ng k so vi tr so c trong ln kim
tra trc, phi thc hin l!i php o s dng hng o, khong cch v k thuto s dng. #ng th+i so snh iu kin nhit v &m ca t ca phpo vi php o trc. Nu php o vn cho gi tr ln h%n ng k so vi ln
trc vi iu kin &m v nhit ca t l nh nhau th h thng in cctip t c th b h hng.- xc nh h thng tip t c b h hng khng, cn phi kim tra h
thng tip t c&n thn xc nh xem cc dy dn c bt hoc cc kt nibn mn v/hoc lng, tut ra khng. Cn phi kim tra tt c cc dy dn vkt ni * trn mt t. Nu phi kim tra phn chn ngm di t, trc tinkim tra cc phn c lin quan vi cc dy t *trn. Cc dy dn v kt ni blng, t phi c sa cha v cc kt ni bn mn phi c tho ra, lms!ch v hn ni l!i, v bo v chng n mn v sau.
b) Tr+ng hp tr sin tr*tip t vn !t yu cu (xem yu cu v tr s
in tr* tip t trong tiu chu&n ngnh TCN 68-141: 1999 "Tip t cho cccng trnh Vi$n thng - Yu cu k thut"), tuy nhin kim tra cho thy h thngtip t b h hng do th+i gian s dng, iu kin mi tr+ng tc ng,v.v.Cn xc nh cc bin php b sung, nng cp cc t tip t da trn cc ch.tiu k thut, tnh kinh t!t c tr s quy nh (xem b sung nng cp cct tip t)
c) Tr+ng hp in tr*tip t khng !t tr s yu cu.Tr+ng hp in tr*tip t khng !t yu cu v h thng in cc cha b
h hng, cn xc nh cc bin php b sung, nng cp !t c tr s quynh (xem b sung nng cp cc t tip t)
3.3. V lin kt cn bng in th cc t tip tTr+ng hp t tip t ct an ten v t tip t vi$n thng cha c ni linkt cn bng in th vi nhau, cn phi thc hin lin kt chng l!i vi nhaung theo quy nh trong mc 3.5.1.5, TCN 68-141:1999. Nu c tr!m bin thin lp t gn st hoc bn trong khun vin nh tr!m vi$n thng cn phi ni"ng th gia tip t ca tr!m bin p v t tip t vi$n thng qua van "ngth.
4. Ghi bin bn bo dng- Ghi cc kt qu kim tra, kt quo in tr*tip t v tnh tr!ng lin kt
cn bng in th gia cc t tip t vo Bin bn bo dng h thng tip tnh trong ph lc I- Ghi l!i cc cng vic sa cha thc hin vo bin bn bo dng.- Nhng sai st, h hng cha th sa cha ngay phi c ghi vo bin bn
sai st, h hng nghim tr0ng trong ph lc H. Sau khi sa cha phi tin hnhkim tra l!i h thng.
- Lp bin bn kim tra, nh gi s tun th cc quy ph!m, tiu chu&n, quynh ca Ngnh v tip t- chng st theo mu bin bn trong ph lc I.
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a) Kim tra cc lo!i mi ni sau:- Cc mi hn (kim tra r!n, vv du hiu n mn);- Cc mi ni bt bu lng (kim tra cht v du hiu n mn);- Cc inh c, vt v cc chi tit nh v khc (kim tra cht v du hiu nmn);
- Cc mi ni bt trn b mt khung, gi thit b hoc cc b mt kim lo!i (kimtra xem tip xc c tt khng v lm s!ch bi b&n hoc s%n gia cc mt tipxc).
b) Kim tra cc lin kt sau:- Kim tra cc vng dy lin kt, cc dy lin kt th"ng ng ca m!ng lin ktchung (nu c). Kim tra lin kt ca cc dy lin kt th"ng ng vi t tipt;- Kim tra lin kt ca cc dy dn st ca nh tr!m, ca thp kt cu nh tr!m,ca cu cp dn vo nh tr!m v ca cc +ng ng dn nc, cc ng dn cp
bng kim lo!i vi vng dy lin kt ca m!ng lin kt chung. Nu bn trong nhtr!m cha xy dng m!ng lin kt chung, cn phi kim tra lin kt ca ccthnh phn trn vi t tip t;- Kim tra tt c cc thnh phn kim lo!i nhng dn cp, cu cp...xem c ni lin tc vin khi i t bn ngoi vo bn trong nh tr!m hoc nilin tc bn trong nh tr!m cha.- i vi dy (cp) hoc ai kim lo!i s dng lm dy lin kt cn phi kim tracc kt ni t!i cc u mt ca ai hoc dy xem c b lng, n mn hoc hhng c%kh. i vi cc lin kt khng m bo yu cu phi ghi l!i v tr cth ca chng v cng vic sa cha.
2. Kim tra nh lngo tnh lin tc vin ca cc lin kt c lit k * trn, c bit l cc
lin kt khng th kim tra bng mt nhi trong t+ng hoc ngm di t.
3. Nhng cng vic cn thc hin sau khi kim tra3.1. Cc mi hn ni b r!n, vphi c hn l!i.3.2. Cc mi hn ni b n mn phi c nh s!ch bng chi st, giy
rp,v.v. sau c bo v chng n mn bng s%n chng r. hoc cc cht liubo v t%ng %ng khc.
3.3. Cc mi ni bt bu lng, bt vt tip xc km do bi, b&n, s%n phi ctho ra lm s!ch v vn l!i chc chn m bo tip xc tt.3.4. Cc lin kt khng m bo lin tc vi nhau phi kim tra k cc mi
ni gia chng v hn ni l!i nu bt hoc b tut.
4. Ghi bin bn bo dng- Ghi l!i cc kt qu kim tra vo Bin bn bo dng cu hnh u ni v
tip t nh trong ph lc I, km theo cc dn chng bng bn v,, nh chp,v.v.
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- Ghi l!i cc cng vic sa cha thc hin vo bin bn bo dng.- Nhng sai st, h hng cha th sa cha ngay phi c ghi vo bin bn
sai st, h hng nghim tr0ng trong ph lc H.- Lp bin bn kim tra, nh gi s tun th cc quy ph!m, tiu chu&n, quy
nh ca Ngnh v tip t- chng st theo mu bin bn trong ph lc G.
10.4.4.2. Kim tra u ni tip t cc khi h thng thit b bn trong nh tr!m
1. Kim tra nh tnh1.1. Kim tra cc thanh t gn trn khung gi my, cc tm tip t ph, tm
tip t chnh. #ng th+i xc nh xem c tm m mt li, m!ng lin ktchung (CBN) bn trong nh tr!m khng.
1.2. Kim tra u ni dy t ca cc thit b vi$n thng vi thanh t gntrn khung gi my.
1.3. Kim tra cc dy ni t t thanh t gn trn khung gi my ca thit b
vi$n thng, t t/khung gi ca thit bin, in t,v.v. ti cc tm tip tph, cc kt ni t tm tip t ph ti tm tip t chnh, gia tm tip tchnh vi tm m mt li v gia tm m mt li vi m!ng lin kt chung/thp kt cu ca nh tr!m xem c b lng, tut khng v tnh tr!ng n mn ccmi ni.
1.4. Kim tra kch thc ca cc dy ni t ca cc khi h thng thit b vkch c, du hiu h hng v ni t ng yu cu.
1.5. Kim tra xem c lp t thm thit b mi hoc di d+i thit b t ln kimtra gn nht khng. Nu c, kim tra cc dy ni t ti cc tm tip t, ti tmm mt li xem thc hin ng yu cu cha.
2. Kim tra nh lng
o kim tra s lin tc vin gia mt s v tr ca m!ng lin kt. Nu bntrong nh tr!m c m!ng lin kt cch ly, thc hin o gia cc thanh t cgn cch ly trn t/ khung gi ca cc thit b. Cc php o in hnh l gia vtr D v E, gia E v G, v gia G v K trn hnh 8.1. Trn cc khi h thngthit b s dng khung gi hoc t thit b lm t cng tc (v d: hu ht cc hthng thit b v tuyn) o kim tra gia cp ni t ca cc khung gi hoc tthit b vi nhau, xem cc kt ni gia B v F, gia F v H trn hnh 8.1. #ng
th+i o kim tra gia khung gi/t thit b vi kt cu thp ca nh tr!m hocm!ng lin kt chung (CBN), xem cc kt ni gia B v C, gia K v J.
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Hnh 8.1. Cc v tro kim tra s lin tc vin
S: Thnh phn thp kt cu nh tr!m hoc m!ng lin kt chung (CBN)LF: Thit b cng tc *di tn s thp (v d nh thit b chuyn m!ch) cni vi h thng tip t duy nht t!i 1 im qua tm tip t chnh (tip tcch ly).HF: Thit b cng tc *di tn s cao (v d: hu cc thit b v tuyn) c nivi h thng tip t t!i nhiu im.
PP: Bng in3. Nhng cng vic cn thc hin sau khi kim tra
3.1. i vi cc tm tip t khng !t yu cu v d nh kch thc qunh, u ni dy t ch#ng cht dn n hiu qu tip xc km hoc vt liu lmtm tip t, bu lng, cu, vng m khng ph hp phi c thay th.
3.2. Cc dy ni t c hn ni, bt vt khng cht, n mn phi c vncht l!i, thay th v bo v chng l!i n mn.
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-l*+,-.-"($'/()
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!"#
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11 DET2/2 Avo Int 4 50 12812 DET 3/2 Avo Int 4 0,1; 1; 10 12813 DET 5/4D, 5/4R Avo Int 4 0,1; 1; 10 12814 DET 62D Avo Int 4 0,1 ; 1 12815 4102 (ch. th kim) Kyoritsu 3 2 -16 4105 (ch. th s) Kyoritsu 3 2 -
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TTTnh, Thnh
phHuyn
Mt st nh(s ln/km2/nm)
1 An Giang Tp. Long Xuyn, Tx. Chu c, An Ph ,Chu Ph, Chu Thnh, ChMi, Ph Tn,Tn Chu, Tnh Bin, Tho!i S%n, Tri Tn
13,7
2 B Ra V2ngTu
Tp. V2ng Tu, Tx. B Ra, Chu c,Cno, Long im, t , Xuyn Mc
8,2
Tn Thnh, Chu c 10,93 Bc C!n Tx. Bc K!n, B!ch Thng, Ch#n, Ch
Mi, Na R, Ngn S%n, Pc Nm8,2
Ch#n 10,94 Bc Giang Tx. Bc Giang, Hip Ho, L!ng Giang, Lc
Nam, Lc Ng!n, S%n ng, Tn Yn, VitYn, Yn D2ng, Yn Th
8,2
5 Bc Ninh Tx. Bc Ninh, Gia Bnh, L%ng Ti, QuV, Yn Phong 8,2
T S%n, Tin Du, Thun Thnh 10,9
6 B!c Liu Tx B!c Liu 10,9Gi Rai, ng Hi, H#ng Dn, Phc Long,V3nhLi
13,7
7 Bn Tre Tx. Bn Tre, Chu Thnh, ChLch, Gi#ngTrm, M Cy
13,7
Th!nh Ph, Ba Tri, Bnh !i 10,9
8 Bnh nh Tp.Quy Nh%n, Tuy Phc 5,7An Lo, An Nh%n, Hoi n, Hoi Nh%n,Ph Ct, Ph M, Ty S%n, Vn Canh, V3nhTh!nh
8,2
9 Bnh D%ng Tx. Th Du Mt, D3An, Tn Uyn, ThunAn
13,7
Bn Ct, Du Ting, Ph Gio 14,910 Bnh Phc Tx. #ng Xoi, Bnh Long, Ch%n Thnh,
#ng Ph14,9
B p, B ng, Lc Ninh, Phc Long 13,711 Bnh Thun Tp. Phan Thit, Hm Tn, Hm Thun Bc,
Hm Thun Nam, Tnh Linh
8,2
c Linh 10,9Ph Qu 7,0Bc Bnh 5,7Tuy Phong 3,4
12 C Mau Tx. C Mau, U Minh, Thi Bnh, Trn VnTh+i, Ci Nc, m D%i, Ph Tn, NmCn, Ng0c Hin
13,7
13 Cao Bng Tx. Cao Bng, Bo L!c, Bo Lm, H 9,2
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144
Thanh Oai, Th+ng Tn, 6ng HaPhc Th0, an Phng, Th!ch Th t, Qu cO!i, Hoi c
8,2
26 H T3nh Tx. H T3nh, C m Xuyn, Can Lc, cTh0, H%ng S%n, K/ Anh, Nghi Xun,Th!ch H, V2 Quang
8,2
H%ng Kh 10,927 Hu giang Chu Thnh, Phng Hip 10,9
Tx. V Thanh, V Thu7, Long M, ChuThnh A
13,7
28 Hi D%ng Tp. Hi D%ng, Bnh Giang, C&m Ging,Ch Linh, Gia Lc, Nam Sch, Ninh Giang,Thanh Min
8,2
Kinh Mn, Kim Thnh, Thanh H, T K/ 10,929 Hi Phng Q. H#ng Bng, Q. Kin An, Q. L Chn, Q.
Ng Quyn, An D%ng, An Lo, Kin An,B!ch Long V3, Thy Nguyn,
10,9
Q. Hi An , Tx. # S%n, Tin Lng, V3nhBo, Kin Thy, Ct Hi
8,2
30 Ho Bnh Tx Ha Bnh, Bc, Kim Bi, K/ S%n,L!c Thy, L%ng S%n, Mai Chu
10,9
Cao Phong, Tn L!c, L!c S%n, Yn Thy 13,731 Hng Yn Tx. Hng Yn, Ph C , Tin L 8,2
n Thi , Khoi Chu, Kim ng, M Ho,Vn Giang, Vn Lm, Yn M
10,9
32 Khnh Ho Tp. Nha Trang 3,4Tx. Cam Ranh, Din Khnh, V!n Ninh,Ninh Ha
5,7
Khnh S%n, Khnh V3nh 8,2
Tr+ng Sa 7,033 Kin Giang Tx. R!ch Gi, Tx. H Tin, An Bin, An
Minh, Chu Thnh, Gi#ng Ring, G Quao,Hn t, Kin Hi, Kin L%ng, Tn Hip,V3nh Thun
13,7
Ph Quc 7,034 Kon Tum Tx. Kom Tum, Kon Plng, Kon Ry, k
Glei, k H, Sa Thy8,2
k T, Ng0c H#i 5,735 Lm #ng Tp. L!t , am Rng, %n D%ng, c
Tr0ng, Lm H10,9
Tx. Bo Lc, Bo Lm, Ct Tin, Di Linh8,2! Huoai, ! T8h
5,7
L!c D%ng 13,736 Lo Cai Tp Lo Cai, Sa Pa, Bc H, Bt Xt, M+ng
Kh%ng, Si Ma Cai8,2
Bo Thng, Bo Yn, Vn Bn 10,937 L!ng S%n TP. L!ng S%n, Bc S%n, Bnh Gia, Cao Lc,
Chi Lng, nh Lp, Hu L2ng, Lc Bnh,8,2
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145
Trng nh, Vn Lng, Vn Quan38 Lai Chu Tx Lai Chu, Tx Lai Chu, M+ng T,
Phong Th, Sn H#, Tam +ng, ThanUyn
8,2
39 Long An Tx. Tn An, B n Lc, C n c, C nGuc, Chu Thnh, c Ha, Tn Tr, Tn
Hng, Tn Th!nh, Th Tha
13,7
c Hu, Mc Ha, Th!nh Ha, V3nh Hng 14,940 Nam nh Tp. Nam nh, Giao Thy, Hi Hu, M
Lc, Nam Trc, Ngh3a Hng, Trc Ninh,V Bn, Xun Tr+ng, Yn
8,2
41 Ngh An Tp. Vinh, Tx. Ca L, Hng Nguyn, Namn, Thanh Ch%ng, L%ng, YnThnh, Qu/nh Lu, Di$n Chu
8,2
Anh S%n, Con Cung, Ngh3a n, Tn K/,T%ng D%ng, K/ S%n, Qu Phong
10,9
Qu/ Chu, Qu/ Hp 13,742 Ninh Bnh Tx. Ninh Bnh Tx. Tam ip, Hoa L, Kim
S%n, Yn Khnh, Yn M8,2
Gia Vi$n, Nho Quan 10,943 Ninh Thun Tx. Phan Rang, Ninh Phc 1,4
Bc i, Ninh S%n 5,7Ninh Hi 3,4
44 Ph Th0 Tp. Vit Tr, Tx. Ph Th0, oan Hng, H!Ho, Lm Thao, Ph Ninh, C&m Kh, TamNng, Thanh Ba, Thanh S%n, Thanh Thu7,Yn Lp
10,9
45 Ph Yn Tp. Tuy Ha 3,4ng Xun, Sng Hinh, S%n Ha 8,2
Ph Ha, Sng C u, Tuy An, Tuy Ha 5,746 Qung Bnh Tp. #ng Hi, B Tr!ch, L Thy, Minh
Ha, Qung Ninh, Qung Tr!ch8,2
Tuyn Ha 10,947 Qung Nam Tx. Tam K/, Tx. Hi An, Bc Tr My, Duy
Xuyn, !i Lc, in Bn, Nam Tr My,Ph Ninh, Ni Thnh, Qu S%n, ThngBnh, Tin Phc, Hip c
8,2
ng Giang, Nam Giang, Phc S%n, TyGiang, Nam Tr My
10,9
48 Qung Ngi Tx. Qung Ngi, Bnh S%n, c Ph, LS%n, Mc, Ngh3a Hnh, T Ngh3a, S%nTnh
8,2
Ba T%, Minh Long, S%n H, S%n Ty, TyTr, Tr B#ng
10,9
49 Qung Ninh Tp. H! Long, Tx. Ung B, ng Triu,Yu Hng, Honh B#, Bnh Liu
8,2
Tx. Mng Ci, Ba Ch,, C T, m H, HiH, Honh B#, Tin Yn, Vn #, C&m Ph
10,9
50 Qung Tr Tx. ng H, Cam L, C#n C, a Krng, 8,2
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146
Gio Linh, Hi Lng, Hng Ha, V3nh LinhTx. Qung Tr, a Krng, Hi Lng, TriuPhong
10,9
51 S%n La Tx S%n La, B c Yn, Mai S%n, Mc Chu ,M+ng La, Ph Yn, Qu/nh Nhai, SngM, Sp Cp, Thun Chu, Yn Chu
10,9
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