3.8qdmvt10-tieu chuan ky thuat va an toan thi cong cong trinh cap treo va cap thue bao

7/28/2019 3.8qdmvt10-Tieu Chuan Ky Thuat Va an Toan Thi Cong Cong Trinh Cap Treo Va Cap Thue Bao

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CNG TY TNHH VIN THNG FPT

TIU CHUN K

THUT V AN TON

THI CNG CNG

TRNH CP TREO VCP THU BAO

M hiu 3.8-QD/MVT/HDCV/FTEL

Ln ban hnh/sa i 1/0

Ngy hiu lc 01/12/2010

51-BM/CL/HDCV/FPT 1/0 1


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QD: Tiu chun k thut v an ton thi cng Ln ban hnh/sa i 1/0



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PHN IQUY NH K THUT AN TON

TRONG THI CNG CC CNG TRNH CP TREO

CHNG I

QUY NH CHUNGiu 1: Mc ch Yu cu

1.1 m bo an ton cho ngi, thit b tham gia qu trnh thi cng. m bo an toncho ti sn v ngi dn trong khu vc thi cng cng trnh.

1.2 m bo cht lng cng trnh theo ng thit k, ng tin thi cng. Khng nh hng lm mt thng tin trong qu trnh thi cng.

iu 2: i tng Phm vi p dng

2.1 i tng p dng

2.1.1 Cc n v trong TT T&QLHT c t chc thi cng cc cng trnh cp treo.2.1.2 Cc c nhn c tham gia trong qu trnh thi cng bao gm: Lnh o n v cn b

ph trch k thut v cng nhn trc tip thi cng.

2.2 Phm vi p dng

2.2.1 Sau khi hon tt h s th tc v xy dng c bn bao gm : D ton thit k,hp ng kinh t, hp ng thi cng, bn giao tuyn, phng n thi cng, lnh khicng, quyt nh giao vic, phiu cng tc.

2.2.2 Quy trnh ny p dng i vi hai phng thc thi cng: c gii v th cng trongcc trng hp sau: Thi cng th mi mt hoc nhiu tuyn cp treo c thit k c ph duyt

ca cc cp c thm quyn. Thay th, sa cha nhng tuyn cp hng hoc khng m bo an ton cho

ngi v mng li.

CHNG II

NHIM V CA NHNG NGI PH TRCHV TRC TIP THI CNG

iu 3: Nhim v cangi ph trch k thut

3.1 Tip nhn v nghin cu k h s thit k, bn v ca cng trnh bn giao cho ihoc T trc tip thi cng.

3.2 Kho st mt bng thi cng v bn giao.3.3 Hon thin cc th tc php l trin khai thi cng.

3.4 Kim tra khi lng v chng loi vt t bn giao cho i hoc T thi cng.3.5 Thng xuyn c mt ti hin trng h tr v mt k thut. Tham gia gii quyt, xl cc vn k thut mt an ton cho ngi, thit b, ti sn ca nhn dn trong qutrnh thi cng.



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iu 4: Nhim v ca i trng hoc T trng thi cng:

4.1 Nhn h s thit k v mt bng thi cng ln phng n thi cng.4.2 Nhn lnh khi cng v t chc tp kt vt t.4.3 Lp phng n v tin thi cng. Hng ngy xem xt thi tit ln k hoch thi cng

chi tit trong ngy.4.4 Hng dn phng n thi cng v phn cng nhim v cho cc thnh vin trong ihoc T thi cng.

4.5 Chun b bin bo cng trng, phng tin v dng c thi cng ph hp cho tng cngvic c th ca cng trnh.

4.6 Lp v ghi chp nht k thi cng chnh xc, y .4.7 Thng xuyn kim tra, nhc nh cc thnh vin tham gia thi cng kim tra dng c lao

ng, phng tin bo v c nhn c th kp thi khc phc, sa cha nhng sai st,h hng.

4.8 Trc khi thi cng, nu sc khe ca thnh vin tham gia thi cng khng m bo thkhng c php tham gia.

4.9 T chc st hch an ton lao ng theo qui nh ca nh nc cho cc thnh vin thamgia thi cng. S ngi khng t yu cu qua st hch th khng giao vic.

4.10 Lun c mt ti hin trng n c, kim tra cng vic v kp thi ngn chn mi sc c th xy ra cho ngi v thit b trong khi thi cng.

4.11 Trang b cc loi thuc v dng c s cp cu thng thng, cn thit phc v cho cngnhn thi cng cng trnh.

iu 5: Nhim v ca ngi trc tip thi cng:

5.1 Tham gia kim tra sc khe trc khi thi cng.5.2 Trit chp hnh s phn cng ca i trng hoc T thi cng.5.3 Trc khi thi cng kim tra cc dng c thi cng v phng tin bo v c nhn. Nu

thy thiu hoc h hng phi xut cp mi hoc sa cha ngay.5.4 Phi bit s dng thnh tho cc thit b, dng c thi cng v phng tin bo v c nhn.5.5 Trong qu trnh thi cng, nu pht hin nhng nguy c mt an ton c th xy ra phi bo

co kp thi cho i trng hoc T trng thi cng cho ngng ngay vic thi cng vtm bin php khc phc.

CHNG III

TRNH T THI CNG

iu 6: Khi thi cng cc cng trnh cp treo cn tin hnh theo cc bc sau:

6.1 Thc hin cng tc cnh gii.6.2 X l chng ngi vt.6.3 Tp kt vt t.6.4 Vn chuyn v phn ri cp.6.5 Thi cng cp treo.

6.6 Tng kim tra r sot cc hng mc thi cng, i chiu cc thng s k thut theo thitk d ton.



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CHNG IVQUI TRNH K THUT AN TON

iu 7: Cng tc cnh gii

Quan st mt bng, lm ro chn, t bin bo, cch ly khu vc thi cng hoc c ngi cnh giii vi ngi v cc phng tin giao thng ni cng cng .

iu 8: X l chng ngi8.1 Pht quang cy ci hoc x l chng ngi dc tuyn cp. Cng vic ny ch c thc

hin khi c s ng ca ch s hu cy ci hoc chng ngi.8.2 Khi thi cng cp treo phi ghi r thi gian. Nu cn thit th xin ct in.8.3 Khi ct in phi ghi r thi gian. Nu ht thi gian ct in m cng vic vn cha hon

thnh phi ngng vic thi cng xin gia hn thm.

8.4 Trong qu trnh thi cng phi c ngi cnh gii m bo an ton cho ngi thi cng.

iu 9: Vn chuyn v phn ri cp

9.1 Trc khi bc d cp kim tra cu, dy ti, xch st, r-moc ko cp m bo an ton.Dy ti phi m bo cht lng theo qui nh nh km.

9.2 Cm khng cho ngi ng gn trong phm vi cu cp ln xung xe vn chuyn (phicch xa t 3m tr ln).

9.3 Sau khi cu cp ln r-moc cp hoc ln xe ti phi c nh bobin cp chc chn, trnhbobin cp ln trn trn r-moc trn xe.

1.6 Khi xung bobin cp phi dng cn cu a tng bobin cp xung t. Tuyt i khngc th cho bobin cp ln hoc ri xung khi xe.

2.6 Phi lin h vi lc lng Cnh st giao thng h tr trong trng hp ko xe ko cp ingc chiu hoc c lu lng xe c ng c.

3.6 Phn ri cp, ra cp trong khong ngn t 200m n 300m v phi a ngay cp ln ccmc J treo tm trn ct trnh cn tr xe c v ngi qua li.

iu 10: Thi cng cp

10.1 Trc khi ln ct, ngi trc tip thi cng phi kim tra k dng c thi cng v phngtin bo v c nhn.

10.2 Kim tra chn ct, thang leo, cc chng ngi trn ct x l ngay trc khi ln ct.10.3 Kim tra hin tng r in cc ng dy trn ct. Nu khng c hin tng r inmi c tin hnh thi cng cp.

10.4 Khng mang vc vt liu, dng c thi cng nng qu 15 kg khi leo ct.10.5 Phi dng dy chuyn cc vt liu, dng c thi cng ln, xung. Cm tung nm v lm

ri dng c thi cng.10.6 Trc khi ko cp phi kim tra cc ma-soa, bm cng cp, xe ko m bo an ton.10.7 Tuyt i ngn cm ngi qua li hoc cng nhn ng gn trong phm vi hng ko

ca dy ti v hng ko ca bm cng cp.10.8 o th cp tng tuyn. Sau khi thi cng u ni hon chnh phi t chc o th kim tra

cht lng in kh t cc u cui cp v t cp hoc v i trm.

10.9 u tip t: dy treo cp v mng chn t ca cp phi c tip t theo qui nh.10.10 Khi u ni cp gp lc tri ma ging phi cho ngng ngay vic thi cng v ng kn

cc mi ni trnh nc xm nhp v s c do sm st gy ra.



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10.11 Khi o th cp bng ng h Mega-Ohm, ngi thi cng phi phng x in trn cp saumi ln o trnh s c phng in qua ngi o.

10.12 Khng c lm vic lin tc trn ct qu 1 gi.10.13 D thi gian lm vic trn ct ngn cng nht thit phi mang dy an ton buc ngi

t th vng chc.10.14 Khng c lp t cp trong iu kin m t hay tri ma.

PHN II

QUI NH K THUT THI CNG NG DY THU BAO

CHNG I: QUY NH V CP THU BAO ADSL

iu 1 - Dy thu bao ngoi nh

- Phi thi cng chnh xc theo bn v.

-

i dy dn t hp tp im n nh thu bao ch c dng loi dy c km dy treo. Nnlp t loi cp xon i 2 dy tn hiu v c cng loi ng knh trn ton tuyn cp

trnh suy hao, phn x tn hiu (xem iu 10 v Ph lc 2).

- Tuyt i khng c trng hp dy thu bao ngoi tri chy bng ngang qua tp im nhm

thc hin ng qui nh Khch hng phi c ni n tp im gn nht

- Hn ch ti a s mi ni. Do ADSL hot ng tn s cao yu cu cc im u ni phi

ng qui cch, m bo tip xc tt. Mi ni cp khng c t ngay gia ct, phi b tr

cch tr ct khong 40cm to iu kin thun li cho ngi cng nhn thao tc mi ni

khi ng trn ct.

- Khng dng cp tch i (mt si ca i ny v mt si ca i khc) lp t ng dy

ADSL v tnh nng ca i dy xon b mt, d gy nhiu.

- Hn ch ti a vic chp i cp s dng nu cha chng minh c cht lng dch v

tt hn ng thi gim xuyn nhiu gia cc i dy.

- Trong pht trin thu bao phi thc hin nguyn tc: trn cng mt hng tuyn c t 5 i

dy thu bao tr ln th phi thay th bng mt si cp vi dung lng thch hp c d tr

cho nhu cu pht trin thu bao trong khu vc.

- Cc dy thu bao phi c ko thng v c cng ng nht, phn dy d tr hp tp

im phi c lun trong ng dn v b theo hnh mc cu bn di hp tp im, y

vng thp hn y hp tp im khng qu 20cm. ng dn ny c 42mm, di 50cm, y

ng thp hn tp im 10cm.

- Khi a dy thu bao vo trong hp tp im phi b gn theo rnh cp dc theo hai bn ca

phin kt ni ri r vung gc i vo cng kt ni. Tuyt i khng c dy lng

thng hoc che lp cc cng kt ni khc. Np hp tp im phi ng m c d dng.



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- Khng c dy cp nm trn cc cy ti hay mc st trn ct. Khng c dng dy tn

hiu neo trc tip vo ct. Phi m bo dy tn hiu trnh c ti a cc nguy c b dp

t, try rch v nha

- ng dy thu bao cch ng dy in h th t nht 1,2m. ng i dy phi m bo an

ton v m quan, trnh va vng, trnh b ct ni trm, xa cy ci, khng che tm nhn cas. cao ca ng dy so vi mt t: ni khng c ngi qua li trn 3m; ni ct ngang

ng giao thng, phi theo qui nh ca ngnh giao thng (xem Ph lc 1).

- Dy treo ni u cui phi c c nh vo g hm dy hoc cht thp bt vo nh hoc vo

ct st nh.

- i dy dn c kt cui bng hp u dy thu bao c chng stlp ti bn ngoi nh

thu bao tin kim tra bo dng.

-

Yu cu in tr tip t 30.- Tuyt i khng ko ng dy ph (chy song song) vi khong cch di hoc ko thm

dy r nhnh. Khi thay dy mi cho thu bao phi thu hi ng dy c. Khi ko mi dy

nhy ti dn MDF cng phi thu hi li dy nhy c.

- i vi nhng cng trnh kin trc ln, nhng ngi nh bit lp i hi m quan, cp c

b tr i ngm trong ng ng nha men theo tng, ni kn o vo nh thu bao;

Trong trng hp ny dy thu bao c ni thng vo hi tp im, khng cn hp u dy

thu bao. ng ngm phi c su ln hn 30cm, c bin php thot nc v c bin bo.- Khi ra cp tuyt i khng c lm xon hoc cc cp. Khng ko l cp trn mt ng,

trnh ko cp qua cc vt sc, bn nhn d lm try thng cp. Phi c gii php an ton,

ngn xe c giao thng cn qua cp.

iu 2 - Dy thu bao trong nh: (p dng cho vic trin khai cc dch v GTGT)

- Dy i trong nh c ni vi hp u dy qua ng cch in xuyn tng nh, ng phi

chch xung pha ngoi chng nc ma vo nh. Khi lp phi tham kho kin khch

hng. Khng lun dy qua khe ca s, qua l thng hi.

- Khong cch gia l lun dy vo nh n cht kt cui ca dy ngoi nh cng ngn cng

tt.

- B tr ng dy trong nh cn c s ng ca ch nh.

- Dy trong nh phi i trong mng hoc trong ng, ni kn khut, sch s, kh ro, g lp

chc chn. ng dy phi ngay thng, m quan.Trong trng hp khng trnh khi chy

ngang sn nh, phi i trong mng cng, dt trnh va vng v trnh h hi dy, ng

thi phi kn trnh m t khi lau ra sn.

- Dy trong nh thuc s hu ca thu bao ( c lp t), phi m bo cht lng in kh

khng nh hng n s hot ng bnh thng ca ton mng.



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- cm ni ca ng dy ADSL cn c vt cht vo tng, t ni kh ro, kn khut,

nhng d kim tra. Khng c t do trn bn hoc sn nh.

- Ch khong cch gia dy ADSL v ng in cc vt dng in khc trong nh khi lp

t. Khong cch qu ngn c th gy xuyn nhiu ln nhau gia cc vt dng vi thit b

u cui ADSL. Khong cch ti thiu l 1,8m i vi dy in trn, cc dn nng my lnh,m-t in, 15cm i vi cc dy khc (dy anten, dy chung ca, cc dy t b bin th

n neon)

- Cp thu bao trong nh cng nn dng cp xon i nht l khi di hn 2m. Hn ch s dng

dy thng v kh nng chng nhiu km.

CHNG II:

TIU CHUN K THUT THIT B NG DY THU BAO

iu 3 - Dy thu bao ngoi nh

3.1 Ch c s dng loi dy km dy treo c ch tiu sau:

Dy dn :

Kim loi ng: 99,95%

ng knh dy : 0,5; 0,6; 0,65 0,05mm

Dy treo :Kim loi thp

ng knh dy: 1,20 0,05mm

Lp cch in: Vt liu PE dy 1 0,1mm, mu en.

3.2 Ch tiu v in 20 C.

in tr vng trong 1 km: 0,5 : 188

0,6 : 136

0,65 : 113

in tr khng cn bng: 2%

in trong cch in trong 1 km:

Dy-dy, dy-dy treo: 10.000 M

in dung cng tc trong 1 km: 54 nF

Suy hao truyn dn trong 1 km tn s 1000 Hz cho php ln nht:

0,5 : 1,43 dB

0,6 : 1,19 dB

0,65 : 1,12 dB



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chu in p cao trong 1 pht: 1,5 kV DC

iu 4 - Dy thu bao trong nh

4.1 C th dng loi mt i hoc dy bng dt nhiu i

4.2 Dy dn: dy n, kim lai ng hm lng 99.95%ng knh dy: 0,4;0,5; 0,6 0,05 mm

4.3 V cch in: PVC

Mu: Chn trong 2 mu: xm hoc trng

C mm do.

4.4 Ch tiu v in 20 C

in tr vng trong 1 km 0,4: 290 0,5: 188 0,6: 136

in tr cch in trong 1 km: Dy-dy 10.000 M

in dung cng tc trong 1 km: 58 nF

chu in p cao trong 1 pht: 1,5 kV DC

PH LC 1

CC QUI NH AN TON CHO CP THNG TIN

Trong trng hp cn thit, cp c dy treo cp bng kim loi (thp) c lp t trong vng gnvi cc ng dy in lc cn c ni t bng cc t ring.Khi lp t cp treo phi ch cao ti thiu ca cp tnh t mt t khng cn tr cc

phng tin giao thng, sau y l thng s c th:

Loi ng cao ti thiu tnh t mt tCao tc 6.5m

Ph 5.5mNh 4.5mi b 3.5m

Trng hp ct thng tin i gn ng ct in lc: Khong cch gn nht gia hai ng dykhng c nh hn chiu cao ca ct cao nht nhm trnh dy b t do ct ng phi. Nua hnh khng cho php th p dng khang cch di y sao cho khi dy in lc ri khi scch in cng khng c kh nng chm vo dy thng tin:

in p ca in lc Khong cch ti thiuDi 1kV 1mDi 20kV 2mDi 35kV 3mDi 110kV 4m



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Di 220kV 6mTrn 330kV 10m

Trng hp ct thng tin giao cho vi ng ct in lc: Dy thng tin phi i di dy inlc, khong cch thng ng gia hai dy phi ln hn qui nh sau:

in p ca dy in lc Khong cch ti thiuDi 1kV 0.6mDi 10kV 2mDi 110kV 3mTrn 220kV 4m

Cho php cp thng tin treo chung ct vi ng dy in lc h th (c in p nh hn1000V) vi cc iu kin sau:

Dy in lc phi i trn dy cp thng tin. Dy treo cp thng tin phi tip t c 250m mt ln vi in tr t khng qu 25.

PH LC 2

NH HNG CA SNG V TUYN AM LN TRUYN DN DSL VBIN PHP KHC PHC

Sng v tuyn ca i pht thanh AM nh hng mnh ln truyn dn DSL v trng khong tns s dng: tn s sng v tuyn AM m cc i pht thanh pht ra nm trong khong 540 KHz

1.7MHz, trong khi khong tn s s dng ca truyn dn DSL t 25KHz 1.1MHz tc hn

50% bng thng s dng ca DSL hon ton c kh nng b cc i pht thanh gy nhiu!

cc khu th, ni c cc i pht thanh, d bo s nh hng nhiu n cht lng cc dchv xDSL ca cc thu bao nm trong khu vc ny nu khng c nhng bin php phng chnghu hiu.

c im pht sng ca cc i pht thanh l:- Pht sng cc khong tn s ri rc.- Pht theo gi.

c im ca truyn dn xDSL l:- Bng thng s dng s thay i theo yu cu v tc dch v ng k: nu thu bao

ng k dch v ADSL G.dmt 8MHZ th mi chim ht khong tn s 25KHz 1,1MHz,cn nu thu bao ng k dch v ADSL c tc thp hn 8MHz hoc dch v ADSLG.Lite th khong tn s s dng s nh hn v do kh nng b gy nhiu s t hn.

Kh nng t iu chnh tc gip loi tr nhiu tt: bng thng ca ADSL c chia thnh256 khong tn s nh, mi khong c b rng 4KHz (gi l tone hay bin), mi mt tonec iu ch mang mt s bit thng tin. Nu i pht thanh pht sng AM trng vokhong tn s no ch c mt vi tone b nh hng, cc tone ny hoc mang t thng tini (gim s bit iu ch) hoc tt hn ty thuc vo t s tn hiu/nhiu (S/N) vo lc .

Nh vy vi kh nng ny, tc ca ADSL gim nhiu hay t s ty thuc vo cng nhiu v khong tn s m nhiu tc ng: cng nhiu cng ln, khong tn s tc ngcng rng, tc ADSL cng gim xung thp.



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Nh vy bin php khc phc nh hng ca sng v tuyn AM ln truyn dn DSL c thl . khng lm g c! Tuy nhin nu yu cu v tc dch v ca khch hng ln hn khnng truyn dn ti a ca ng dy DSL th c th xem xt thm cc bin php sau:- S dng cp c mn chn t bng kim loi, mn chn t ni t ng qui cch- S dng cp c xon i k c on ni t tp im n nh thu bao v dy trong

nh.

- i dy ngn nht.- Hng dy cng c th lm gim cng sng v tuyn nh hng ln ng dy.

PH LC 3

CC QUY NH V AN TON IN KHI THI CNG

I. GII THIU CHUNG V MNG LI IN

Li in nc ta hin nay c cc cp in p sau:

o Li in h th: 0.4 kV

o Li in trung th: 6kV ,10kV, 22kV, 35kV

o Li in cao th:110kV, 220kV

o Li in siu cao th: 500kV

Cch phn bit cc mng li in trn theo bt s:

o Li in h th: khng s dng bt s

o Li in trung th:c t 1-3 bt s

o Li in cao th: 110kV c 9 bt s; 220kV co16-18 bt so Li in siu cao th: 500kV c 28-32 bt s

II. CC TAI NN V IN C TH XY RA:

1. in git: khi c th con ngi ng thi chm vo 2 im c in th khc s cdng in i qua ngi gy ra tai nn in git.

2. t chy do h quang in: khi ngi, vt n gn in p cao tuy cha chm phinhng do in p cao sinh ra h quang v dng in sinh ra do h quang qu ln dnn nn nhn b chn thng hoc cht do h quang phng chy.

3. N, ho hon: thng xy ra mi trng d chy n. Khi c s c in gy thit hi

c v con ngi ln c s vt cht.III. BIN PHP K THUT AN TON LAO NG V AN TON IN :

1. Khi lm vic trn cao, qun o phi gn gng, tay o phi bung v ci cc, i m,i dy an ton, eo dy an ton.

2. Lm vic trn cao t 3m tr ln bt buc phi eo dy an ton, d thi gian lm vicrt ngn, dy eo an ton khng c mc vo nhng b phn di ng nh thang ding hoc nhng vt khng chc chn, d gy, d tut, phi mc vo nhng vt cnh chc chn.

3. Khi c gi ti cp 6 (60-70 km/gi) hay tri ma th cm khng c tro ln ct .

4. Nhng ct ang dng d hoc dng xong cha t 24 gi th khng c tro ln

treo cp.5. Khng c mang vc dng c, vt liu nng trn 15 kg ln cao cng vi ngi. Ch

c php mang theo ngi nhng dng c nh nh km, tuc-n-vt, c-l, m-lt



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nhng phi gi chc chn. Cm t cc dng c vo ti qun o phng rixung u ngi khc.

6. Cm a dng c, vt liu ln cao hoc t trn cao xung bng cch tung, nm.

7. Phi gi khong cch an ton khi thi cng gn mng li in, khng c ro che chnphi m bo khong cch sau:

Li in h p khng nh hn:0.3m Li in p t 6kV,10kv,15kv khng nh hn: 0.7m

Li in p t 22kV,35kV khng nh hn : 1.0m

Li in p 110kV khng nh hn :1.5m

Li in ap 220kV khng nh hn: 2.5m

Li in p 500kV khng nh hn: 4.5m

8. Cm lm vic khi c in p pha sau hoc c 2 bn ngi, mc d m bo tiuchun khong cch an ton nh trn.

9. Cm lm vic v tr khom lng (khi n thng ngi ra th khng m bo khongcch an ton theo qui nh trn.

Ngi duyt Ngi kim tra Ngi lp

Nguyn Vn Lc Bi Hng Yn inh Quang Tun


3.8qdmvt10-tieu chuan ky thuat va an toan thi cong cong trinh cap treo va cap thue bao

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