PHAN XI

Head Office 72-74 Nguyen Thi Minh Khai St. BIN PHP THI CNG

District 3, HCMC, VietnamH THNG PCCCPhone: +84 8 3822 7260 Fax: +84 8 3822 6001Rev 01

BIN PHP K THUT THI CNG

LP T H THNG PCCC

Mc lc:

I. CC TIU CHUN P DNG THI CNG H THNG PCCC

II. CNG TC CHUN B

III. THI CNG NG NG CHA CHY.

IV. THI CNG BM NC CHA CHY.

V. THI CNG THIT B CHA CHY.VI. CHY TH, NGHIM THU, HON THNH H THNGI. CC TIU CHUN & QUY PHM P DNG TRONG CH TO, LP T V VN HNH H THNG PHNG CHY CHA CHY:

TCVN 5040: 1980: Thit b PCCC

TCVN 5760: 1993: H thng cha chy, yu cu thit k lp t v s dng

TCVN 2622: 1995: PCCC cho nh v cng trnh

TCVN 6160: 19906: PCCC cho nh cao tng

TCXD 46: 1991: Chng st cho cc cng trnh xy dng

AS 2419.1: 1994: H thng chng chy tng qut

AS 1441: 1998: H thng hng cha chy AS 3000: Nguyn tc u dy ca c

AS 3008: Chn dy cp

AS 1136: Bng t in

CIBSE: Chatered Institute of Building Services Engineers

II. CNG TC CHUN B:1.1 Chun b bn v:

c v hiu r cc bn v mang tnh phi hp vi cc hng mc khc nh Cp thot nc, H thng in, vin thng, kt cu, kin trc. Nhm m bo vic thi cng khng nh hng n khng gian lp t v nh hng n kt cu hoc kin trc ca ta nh. c v hiu k bn v xc nh v tr, chiu cao lp v cc im u ni ca cc thit b (Cn thit phi phi hp vi b phn k thut ca ch d n). Thc hin tt c cc chi tit lp t v trnh duyt trc khi lp t.

Trc khi thi cng thc t trn cng trng, nh thu s thc hin vic m phng thi cng trn my tnh bng phn mm BIM - REVIT, tm ra cc gii php thi cng ti u nht cho mi h thng v cho tng th cc h thng.1.2 Chun b nguyn vt liu: Nguyn vt liu v thit b phi c mua mi v vn chuyn an ton n kho cng trng theo ng tin thi cng yu cu (Sm hn t nht 5 ngy trc khi lp t).

B phn k thut s tin hnh kim tra cc vt t, thit b khi em n cng trnh m bo rng ng cc tiu chun k thut, nhn hiu v xut x nh quy nh trong h s mi thu v cc quy nh khc ca n v T vn Gim st ca Ch u t (Cn c theo Bin bn trnh ph duyt mu vt t, vt liu).

B phn qun l thi cng s tin hnh cc th tc kim tra, xc nhn vt t thit vi n v t vn gim st ca Ch u t theo quy nh v Qun l cht lng cc cng trnh xy dng trc khi em lp t.

B sung cc Vn bn kim nh v cht lng vt t, thit b ca cc c quan gim nh cht lng nu c yu cu. Lm bin bn nghim thu cc thit b nhp khu khi hng ha n cng trnh theo quy nh. V sinh vt t thit b sch s trc khi thi cng, dng cc bin php che chn bi, nc, rc. 1.3 Chun b mt bng:

Cn c vo tin thi cng ti cng trnh Nh thu phi hp cht ch vi Ban QLDA, TVGS, vi cc Nh thu lin quan t chc giao nhn mt bng thi cng.1.4 Chun b ngun nhn lc thi cng:

Nhn cng thi cng h thng PCCC: 50 ngi Chia lm 05 i thi cng, mi i 10 ngi.

Phn cng mi i thc hin mt chc nng c th: thi cng ng trc ng, thi cng ng mt bng

1.5 Chun b dng c, thit b thi cng.TTM tn vS lngGhi ch

1My ren ngci02

2Qu dici01

3My khoan tayci05

4My bn laserci01

5My ct kim loici02

6Thang nhmci2

7Dn gio thi cngci06

8Km, t vt, k lb6

9My hnci03

10My nn khci02

11Bab8

12Ti kob3

13Dng c khclcp Theo tin thi cng

14Vt t ph phc v thi cnglcp Theo tin thi cng

III. CNG TC THI CNG NG NG CHA CHY:

1) Xc nh v tr thi cng:

S dng my Laser v thc mt xc nh v tr lp t ng. Cn c vo tng, vch, tr xc nh ta cc v tr thi cng lm c s xc nh v tr, cao lp t ng. nh du v tr lp t ng.

Tt c cc ng s dng lp t h thng cha chy phi c ch to bng thp m km (BS 1387). Dng khoan tay khoan cc v tr lp t gi . T chc tt kho bi ng

Kim tra cht lng ng khi cp n cng trng.

Bo qun ng, ni kh ro, kho phi c mi che chn.

Kt ni ng vi fitting, ng vi ng: Vic kt ni ng tu thuc vo mi chng loi ng2) Tin hnh lp t:

S dng ti hoc cng nhn a ng n v tr nh du. Phng php ghp ni ng ch yu s dng phng php hn i vi cc ng c ng knh ln hn hoc bng 65mm, s dng ni ren vi cc ng c ng knh nh hn. Ti nhng ni khng th s dng cc phng php trn c th ghp ni bng mt bch nhng phi c cc bin php m bo kn khi lm vic vi p sut cao v ming m lm kn khng b ph hy di tc dng ca nhit cao.

Trc khi c lp t, ng v cc ph kin ghp ni t, ct phi c lm sch bn trong v bn ngoi ng.

Cc ng ng i bn trong cc hp thng tng k thut, cc ng nhnh v cc ng nm ngang khc i pha trn trn gi (tr cc khu vc khng th).

ng nm ngang phi c treo hoc ln trn hoc xung sn s dng cc ph kin treo ng ph hp vi thit k v tiu chun hin hnh.

i vi cc ng c ng knh khng ln hn 65mm, khong cch gia hai ph kin treo ng khng qu 1500mm. Nu ng c ni gia 2 ph kin treo ng th khong cc ny khng qu 1000m. Nu mt u ng ct hoc l on ng ng th khong cch t u ti ph kin treo ng gn nht khng qu 1000mm.

ng dn ra tr tip nc cho xe cha chy t h thng c th i ngm di nhng phi c cc bin php bo v trnh b n mn ha hc bng cch sn hc n. ng ng chnh cp nc cho h thng phng chy cha chy s c lp t m trong nn b tng t nh t my bm vo ta nh. Vic i ng m nn b tng c nhiu u im nh: ng ng i thng, s tit kim c cc vt t nh ng, co, te, mang tnh thm m cao v c bit khng lm nh hng n kt cu xy dng nh phi ct, c tng, ct b tng.

Cng tc ny s c phi hp vi tin ca Nh thu xy dng, khi cng tc t ng ngm trong mt khu vc hon thin K thut thi cng s gi yu cu n n v t vn gim st, cng tin hnh kim tra theo bn v thi cng c duyt v hon thin cc cng vic cha t yu cu. Khi cc cng vic hon thin s lm bin bn bn giao li mt bng cho Nh thu xy dng trin khai b tng.

Cc k thut c bn trong cng tc i ng m nn:

+ Cc u ni ng phi c hn vi mt bch, mi hn phi thng, nhuyn, khng b r. Cc ng ni lin kt vi nhau bng bulong ai c thng qua mt bch v c lt ron cao su.

+ V tr ng, hp cu ha phi chnh xc theo ng bn v thi cng (Shop Drawing), trnh vic b thiu hoc phi ct c.

+ Khi cng tc lp t ng cp nc phng chy cha chy m nn b tng hon tt. S tin hnh cng tc kim tra p lc ng ng trc khi b tng nn bng cch: bt kn hai u ng ng cp nc, mt u gn ng h p lc, u cn li dng bm p lc bm nc vo ng ng. n khi ng h p lc ch n nh mc th dng li v ng van gi p lc ng ng. Theo di p lc ng ng trong 24 gi, nu p lc gim nhiu th phi tin hnh kim tra li cc v tr ni ca ng ng x l. Nu p lc ng ng gim khng ng k th tin hnh hon thin mt bng (lp ct, t, dm nn) b tng nn. Cp nht v lp bn v hon cng h thng ng ngm.Cc phng php ni ng:

Phng php hn:

+ Kim tra dng c thi cng (my hn v my ct, ngun in cung cp, thit b cha chy (bnh CO2)

+ Kim tra dng c bo h lao ng

+ V sinh ng

+ Kim tra bn v thi cng, v tr lp t ng

+ Vn chuyn ng ra v tr thi cng v t ng ln gi hoc mt mt phng.

+ Ct gt v mi nhn ng trnh mvn lt vo ng.

+ nh v ng cn ni trn mt mt phng

+ Sau khi kim tra an ton th bt u ni ng.

+ Bt 2 u ng bng nt bt, Test p lc (mi t vn kim tra)

+ Kim tra cao ng (theo bn v thi cng ) chnh thng ng (mi t vn kim tra)

+ Kim tra p lc theo yu cu k thut (mi t vn kim tra)

+ Chun b h s nghim thu (mi t vn kim tra).

+ Bt u ng k bng nylon hoc bng keo .

+ Xit chc cong kp ng

+ Sn ng v sn chng r mi hn

Phng php ni bng ren.

+ Kim tra my ren v dao ren

+ Ct gt v mi nhn ng

+ Qun dy hoc bng keo hi ln phn ren trc khi ni

+ Ni ng

+ Cc bc khc tun t nh ng ni bng phng php hn

i vi ng i m di t

+ Bi keo hoc son ln phn ng tip xc vi fitting v fitting

+ Cc bc cn li thc hin nh phng php ni ng GI

Phng n ni ng vi thit b

+ Kim tra v tr lp t (bn v thi cng)

+ Kim tra gi thit b.

+ Kim tra thit b, t thitb vo v tr cn lp

+ C nh thit b v cn chnh thit b ln gi hoc ln sn, ln tng.

+ Kim tra ng v v sinh ng.

+ Tin hnh ni ng vi thit b

+ Test p lc hteo yu cu k thut ( mi t vn kim tra )

+ Dng nylon che chn bo v thit b.

+ Chun b h s testing (mi t vn kim tra)

+ Tin hnh training

+ Chun b h s nghim thu v bn giao ( mi t vn kim tra)

Ni ng vi mt bt, van, khp ni mm vi y lc, bm, ng h p lc.

IV. LP T BM NC CHA CHY:1) Xc nh v tr thi cng:

S dng my Laser v thc mt xc nh v tr lp t bm. Cn c vo tng, vch, tr xc nh ta cc v tr thi cng lm c s xc nh v tr lp t bm. nh du v tr lp t bm.

Tt c cc bm nc phi lp t ng theo catalogues hng dn ca nh sn xut.

Dng khoan tay khoan cc v tr lp t gi .

Kim tra ti trng bm

Ch to b qun tnh.

Chn l xo gim chn (tnh theo ti trng bm v b qun tnh)

t bm ln v c nh trn b qun tnh.

Kim tra, mi t vn kim tra.

2) Tin hnh lp t:

My bm cha chy, c lp t trn cc nn b tng c dy khng nh hn 150mm.

Cc on ng mm c lp t ngay sau cn thu lch tm gim chn ng khi khi ng bm v khi bm hot ng. Cn chnh ng trc ca bm. Cc van ng m phi c lp t ti cc v tr v cao ph hp thun tin trong vic vn hnh. Mi van ng m chnh phi c treo mt bin nh ch hng nc chuyn ng v ghi r v tr ca van l thng ng hay m.

V. CNG TC LP T THIT B PHNG CHY CHA CHY1) Xc nh v tr thi cng:

Lp bng lit k thit b cho tngkhu vc (Hoc tng tng) trong th hin c tt c cc thng s nh chng loi, thng s k thut, v tr lp t, s lng v c Ph trch thi cng ph duyt.

Trc khi lp t, phi lm v sinh ton b cc u ng (Bng tay hoc dng my nn kh). Cc u phun cha chy phi c v sinh sch s bng kh nn v lp ng v tr theo bn v kin trc.2) Tin hnh lp t:

Khi lp t phi tun th cc hng dn lp t ca Nh sn xut.

Lu chiu ca cnh cha t sau khi lp t, trnh trng hp b ngc hoc khng ngay ngn. Dn nhn bng Plastic, th hin r s th t/ hng nc cp trn ng ng cp nc chnh theo ng bn v, cp nht bn v hon cng mt bng b tr v s nguyn l, lu h s.

H thng bm nc c kim tra cht lng bng cch vn hnh bm nc th p lc, vn hnh ch bng tay v t ng.

Tham chiu catalogues k thut ca nh sn xut thit b cha chy lp t cm van bo ng (alarm valve), tr cha chy (pillar hydrant), van trn ngp (deluge valve).

Cc u phun c lp ng yu cu T vn & khuyn co ca nh sn xut. Xc nh v tr lp t hp cu ha theo bn v phi hp vi cc h thng khc nh: iu ha khng kh, thng gi, t in, bo ng chy, m thanh v.v

Ghi bin bn kt qu kim tra h thng, trnh T vn Gim st v lu h s. Ti cnh ca ca hp ghi r Hp cu ha.

Cc hp hng ch cu ha ti cc cu thang thot nn c lp t theo kiu gn chm, ngoi ca ghi r Hng ch cu ha.

Cc bnh cha chy xch tay c gn ni trn tng, ti cc v tr thit k vi cao thun tin cho vic s dng hoc thay th bnh cha chy.

VI. CNG TC CHY TH, TH NGHIM HON THNH H THNG:

1) Cng tc chy th, hiu chnh h thng:

Chun b cc mu bin bn chy th v hiu chnh h thng. Trong th hin c cc thng s tiu chun ca thit b theo Catalogue, v cc thng s hot ng khi chy th, - So snh cc thng s ny v c s hiu chnh h thng hot ng t cc tiu chun chn.

Cho h thng bm hot ng, kim tra p lc, tnh trng hot ng ca my bm. Lp van, vi, lng phun v m van x nc. Kim tra chiu cao, phun xa v p lc duy tr trong ng ng. Bt 2 u ng bng nt bt, Test p lc (mi t vn kim tra)

Kim tra cao ng (theo bn v thi cng ) chnh thng ng (mi t vn kim tra)

Kim tra p lc theo yu cu k thut (mi t vn kim tra) Xit chc cong kp ng

Sn ng v sn chng r mi hn.

Ct gt v mi nhn ng

2) Nghim thu, hon thnh h thng: Lp h s kim tra, o thng s theo cc mu bin bn test c ph duyt bi n v t vn gim st.

trnh danh mc cc thit b dng th nghim, cc thit b o th c kim tra bi C quan o lng c chc nng (Trung tm III, Q-Test).

Lp v trnh duyt k hoch th nghim o c h thng cho Ch u t ph duyt.

trnh ni dung v bin php th nghim thit b cho T vn gim st ph duyt.

T th nghim ca nh thu l nhng K s, cng nhn lnh ngh c kinh nghim trong lnh vc Testing & Commissioning khng tham gia thi cng lp t.

Sau khi hon tt cng vic, t th nghim s bo co kt qu o c cho Ph trch thi cng bng cc Bin bn th nghim, ng thi bo co v ngh n v thi cng sa cha v khc phc cc khim khuyt hoc cc li k thut.

Lp h s lu, h s ny s l mt phn bt buc ca h s hon cng cng trnh.------o0o------Searefico Ti liu ni b -

Khng c sao chp tr khi c s ng bng vn bn ca QMR. Page 17 of 17