BIỆN PHÁP THI CÔNG hệ THỐNG PCCC

INSTALLATION GUIDELINES / f O F I f r tINSTALLTION GUIDELINES FOR STEEL PIPE SYSTEM / HUONG DAN LAPDAT HE THONG DUONG ONG THEP Installation method for steel pipe system applies to the en

HƯỚNG DẪN LẮP ĐẶT

HỆ THỐNG PHÒNG CHÁY & CHỮA CHÁY CÔNG TRÌNH BẢO MINH – Q 9 TP.HCM

INSTALLATION GUIDELINES / f O F I f r t

INSTALLTION GUIDELINES FOR STEEL PIPE SYSTEM / HUONG DAN LAPDAT HE

THONG DUONG ONG THEP

Installation method for steel pipe system applies to the entire fire protection system, drybranches, water branchesforautomatic fireprotection ofwall and pumproom

Bien phdp lap dcit lie thong dieting ong thep dp dung cho loan he thong PCCC , ede ong kho , ede ong dannuticchita chdy tie dong , chita chdy vdehticting, Phong bam.

2 Reference standards/ Cdc tieu chudn tham khdo :

- TCVN6160-1996-Fire fighting and protectionfor High-rise Building/

Tieu chudn TCVN 6160-1996-Phong chdy chita chdy nhd cao tang ;

- Standard AS 2118.9 - 1995 Automatic fire sprinkler systems - Piping support andinstallation;

- Standard NFPA 13-1999, pages 13-70;

- Standard BS21,4504,1387

- DocumentPipe Hanger-Design Engineering ciia Anvil International;

- Hanger made by KNACK

3 Materials and equipment prepared for construction/Vat tu thiet hi chudn hi thicons:

3.1 Drawings /Ban ve :

- Shop drawings shall be approved 1 weekbefore construction/

Cdc ban ve thi congphdi dieac duyettrutickhi thi cong 1 tudn .

- Methodofstatementshall beapproved 1 weekbefore construction/

Bien phcip thi cong phdi dieac duyettrutickhi thi cong 1 tudn.

3.2 Materials/Vdttir:

- Equipmentand Material shallbeinspectedbeforeinstallation/

Cdc vat tie thiet hi phdi dieac dieac nghiem thutrutickhi lap ddt.

- After inspection, Material shall begatheredat machiningarea/

Sau khi dieac nghiem thu , cdc vat tie dieac tap ket den bdi gia cong .

- Machinery and specialized equipment shall be fully gathered including: welding machine,

threading machine, drilling machine,.../

May moc vd thiet bi chuyen dung phdi dieac tap ket day dii bao gom : May hdn , may ren , may khoan ,

- The entire fire protection system uses black steel pipes; hence, they shall be cleaned andcoated byanticorrosive paintbefore construction/

Todn bo he thong chita chdy dung ong thep den do do trutic khi thi cong phdi duac ve sink sack se va duacsonchongri

INSTALLATION GUIDELINES / COFICO

- After the installation has completed and the inspection of pressure test has finished,

finishing paintis executed

4.Installation/Lap dat:

4.1.Detail of support for horizontal pipes /Chi tiet gid do ' dug ngang

Detail forhanging

/

single pipe/Chi tiet

treo dug dan

Detail forhangingmulti-pipes(U-Boltabove)/Chi tiet treo nhieu dug ( U-Bolt

DA! OC TAC KS DAN

BANG THONG SOGlATREOONGNGANG

HORIZONTAL PIPE HANGER SCHEDULE TABLE

KHOANGCACH SPACING

KICH THUO ’ C GlA TREO HANGER SIZE

KICH THUO ’ C GlA 00 ’

FLAT BAR BRACKET SIZE KICH THUO

’ C THEP GOC ANGLE BAR SIZE DKDANH NGHlA

INSTALLATION GUIDELINES /

r f

4.2 Detail of support for pipes inRiser/ Chi tiet dir 6m: Riser

Detailof support for pipesir

Riser(side view)/Chi tiet dc

§

ong trong Riser ( mat canh )

Detailof support for pipes in Riser(Plan

view)/Chi tiet da dug trong Riser ( mat being )

U-Bolt Standards/Quyeach U-Bolt

Steel pipe /

Ong thep

THEP HlNH U100x46x5.0mm TAC KE THEP M12 X 70

Detailof anti-vibrationsupport

(Plan view) /Chi tiet giaetachong

rung ( mat dimg )

Specificationfor anti-vibrationsupport/Quy

each gia da chong rung

MaxDistancebetweensupports/

Khoang each Max

SAN BE TONG

SAN BE TONG

SteelPipe/

INSTALLATION GUIDELINES / rrtFITrt

HU'O'NG DAN LAP DAT

4.4 Notices during pipe installation/Nhims hru v khi lap dat duans 6 ns

Fittings’hanging spacing/ Khoang

each treo ngay phu kien Notice/ Limy

The maximum hanging spacing upon the pipe's alignmentchange is 200mmfor the pipe < DN25

Khoang each treo Ion nhat khi ong chuyen huong la 200 mm cho ong < DN 25.

The maximum hanging spacing upon the pipe's alignmentchange is 500mm for the pipe>DN32

Khoang each treo Ion nhat khi ong chuyen huong la 500mm cho ong > DN32 .

Fittings' hanging spacing/ Khoang

each treo ngay phu kien

Fittings' hanging spacing/ Khoang

ccich treo ngay ph u kien

INSTALLATION GUIDELINES / TOFITO

Pipe installation avoiding other

systems/ Lapdat dug tranh ne he

khac

Notice/ Licuy

Pipe installationas illustrated in the left figure will lead to thepipe changing its alignment up to the air-available area andunder the system operation,this location will impact the insidewater’s mobility and shakethe pipe

Ong lap dat nhu hinh hen phai se lam cho doan dug doi huong len tren co khong khi vd khi he thong hocit dong vi trinay se lam anh huong den qua trinh Imi dong cua moi chat ben trong dong thoi lam rung tuyen ong.

Ong lap dat nhu hinh ben phai se lam cho doan ong chuyen huong xuong du & i bj dong can can lam gidm tiet dien ong ,

tang ton that dp . Do do lam gidm lieu luemg moi chat qua doan ong nay .

Thicknessof steel pipe/

Ong thep chieu day

INSTALLATION GUIDELINES / COFICO

HU'O'NG DAN LAP DAT

Pipe to pipe welding/

Cdch han ong v&i ong Notice/ Limy

The bond spacing in the right figure is larger than theregulated one.Hence, theweldingbond willflow backwardsthe pipe and the pipe’s cross area willbe reduced/

Khoang cdch moi ghep & hinh hen phai Ion han quy dink .

Do do lam moi ban chdy vao trong ong lam glam tiet dien ong.

Pipe to pipewelding/

r \ A r A

Cdch ban ong v & i ong Notice/ Lua y

r

Khoang each moi ghep 6hinh ben phai nho han quy dinh

Dodo moi han khong dam bao do ben

The bond spacing in the right figure is smaller than the regulated one. Hence, the bond ' s durability is not secured.

Flange bonddimensions/ Quy cdch moi han mat bich

Flange to pipe welding/

Cdch han Mat bich v & i

INSTALLATION GUIDELINES / T O F I T O

Hl / ONG DAN LAP PAT

Flange bond dimensions/Quy each nidi ban mat bich

Flange to pipe welding/ Cach

ban Mat bich vcri dug

Opening welding/ Han mb '

Branch pipe and main pipe’sdimension should beasfollows:

r r X F \ X F

Kick thuac ong nhanh vd ong chinh nhirsau:

Where the ratioof main pipe’sdiameter over its thickness issmaller than 100 times, the branch pipe’s diameter isconstantly smaller than that of the mainpipe

Khi ty so giira dircrng kinh ong chinh va chieu day cua no nho hem 100 Ian thi duemg kinh ong nhanh luon nho horn dircrng kinh ong chinh.

Where the ratioof main pipe’sdiameter over its thickness islarger than100 times,the branch pipe’s diameter./

Khi ty so giira dirang kinh ong chinh va chieu day cua no Ian hon 100 Ian thi dirang kinh ong nhanh nho ban mot nira

F

dircrng kinh ong chinh.

In case the main pipe's diameteris 4 times larger than that ofbranch pipe and branch pipe’s diameter is smaller than40mm,driller is requestedfor the opening of branch pipe./

Truong hap dirang kinh ong chinh lan gap 4 Ian dirang kinh ong nhanh va dirang kinh ong nhanh nlio ban 40mm thi viec mcr lo ong nhcinh phdi su dung khoan .

Vertical opening welding/

\ s * X F

Han md lo ong dung

Ren từ 6-8 vòng

HU'O'NG DAN LAP DAT CONG TY CO PHAN XAY DONG SO 1

E Z L A N D

Opening welding executed as shown in the right figure willreduce the pipe’s cross section; prevent the flow leading topressure loss increment and reduction of water flow

Han md Id nhu hinh ben phai se lam gidm tiet dien ong , can trd dong chay lam tang ton that dp , gidm lint hr ong nude qua ong .

V 777 >

/ / / / / // / / / / / // /// / / ,

The opening diameter shall be equal to the branch pipe'sinternal diameter; branch pipe should be processed inconformity with the opening'sprofile.

Duong kink 16 mo phai bang dudng Idnh trong cua ong nhdnh , ong nhdnh phai duoc gia cong theo bien dang cua Id

mo

pinionsphdp ren

- Threads which are considered as unqualified are those

featuring uneven thread spacing, broken threads,

defective threads thatcannotconnect tothe fitting./

Ren khong dqt yeu cdu khi bude ren khong deu, ren bi

be , loi khong ket noi duoc vdi phu kien.

- Threadsare consideredasqualified if the thread spacing

is even and plain which is in conformity with the

fittings'thread spacing

Ren dqt yeu cdu khi bude ren deu , tron dung vdi bude

ren cua phu kien .

- Use the standard fittings with correspondent dimensions

for checking whether the pipe thread making process is

qualifiedor not.

Su dung phu kien chudin vdi kich thude tuong ung de

kiem tra cong tdc tao ren ong co dqt hay khong.

Steps of assembling the pipe to fittings/ Cdc bude lap

ong vdi phu kien Description/ Dien gidi

INSTALLATION GUIDELINES / r r t F l f O

Hl / ONG DAN LAP DAT ~

Step1/ Birac1:The qualified threaded pipe's threadswill be coated by a paint layer whichaims to create a connective layerbetween the pipe and the next primingmaterial Besides, it also acts as asealing substance The paint layer shallsufficient to drench the sack (jute) orwool layer.

Ong duac tao ren da dat yeu can sc duac phu mot lop son tren cac ren.Muc dich la de tao lop lien ket giua ong vd lop vat lieu lot ke tiep . Ngodi ra no co tdc dung lam kin. Lap son vica dii de thdm ir & t lop bo ( day ) hoac len.

The material type is sack(jute):allthreads will be evenly wrappedfor

1lap

The material type is wool: allthreadswill be evenly wrapped for

3lapsUpon wrapping completion, use a hand

toslide the sack or jute layerinclockwise directiontolet itmixwiththe paint layer executed in step1

Ong sail khi duac san phu tren be mat ren se dicac quan lop bo ( day ) hoac len,

chieu quan theo chieu kim dong ho. Tiiy thuoc veto locii vat lieu ma so vong quan

la khac nhau, theo kinh nghiem thi: Vat lieu Id bo ( day ) se quan deu het cdic ren 01 vong .

Vat lieu Id len se quan deu het cac ren 03 vong.

Sau khi quan xong , dung tav vuot lap bo hoac day theo chieu kim dong ho de no ben vdo lop san a birac /

Step2/ Birac 2

FIRE PROTECTION

INSTALLATION GUIDELINES / T O F I T O

Hl / ONG DAN LAP PAT ^ ^

Step3/ Buac 3 :

The next layer is Teflon, wrappingdirection is clockwise. Depending on thematerial type of step 2, the number ofTeflon laps will vary According toexperiences:

-The material type in step 2 is sack

(jute): all threads will be evenlywrapped by Teflon for 15 to 20laps

-The material type in step 2 is wool:all threads will be evenlywrapped for 25 to 30 laps

Lop ke tiep la Teflon, chieu qu&n theo chieu kim dong ho , tuy loai vcit lieu d

buac 2 ma so vong quan cua Teflon se khcic nhau , theo kinh nghiem thi:

Vat lieu a budc 2 la bo ( day ) thi Teflon se quan deu het ccic ren 15 den 20 vong .

Vat lieu a buac 2 la len se quan deu het cdc ren 25 den 30 vong.

Step3/ Buac 3

Step4/ Buac 4 \

Paint one more layer over Teflon layer

to create asealing layer attachingtothefittings'surface

San phu 1 lop len lop Teflon de tao lop lam kin bam vao be mat cua phu kien .

Step 4/ Buac 4

INSTALLATION GUIDELINES /

Step5/ Buac 5 :

After completing the above 4 steps,execute the pipe to fittingsconnection as shown in the besidesfigure

Sau khi hodn thien 4 buac tren thi tien hanh ket noi dug vai phu kien nhu hinh ben.

Besides the above method ofconnection, there is also the method

of using A+B glue which requiresonly the panning of glue on gasketsurface and connecting it to thefittings

Step 5/ Buac 5

- Phuang phdp ket noi ong bong keo

A + B , Phuang phdp nay chi can lam sach

2 dau ren , phu kien ren vd quet keo ten

be mat rang r di ' ket noi vai phu kien dung kim rang de xiet chat vira tay , dam bao sao khi xiet ren cua ong va phu kien

vita khit Phuang phdp nay nhanh, dan

gian va dam bao cac khe noi chiu duac

dp luc cao de dang thi cong

5.3.tSteel pipe installation by flange connection/Lap ddt 6nsthey bans noi mat bich

Detailof steel pipe installation by flange connection/ Chi

tiet lap dat ong thep being noi mat bich Notice/Lieu y

VAN

BULONG

symmetrically tightened and each pairshall be evenly tightened, thesequence of tightened nuts in the leftfigure is described as follows:

Bulong duac xiet tirng cap doi xung

vd xiet deu tirng cap , a hinh ben qua

+ Step 1: nuts shall be tightened at

thepositions1 and 4;

Buac 1 : xiet bulong tqi vitri1 vd 4 ;

INSTALLATION GUIDELINES / rrtFITrt

HU'O'NG DAN LAP DAT

+ Step 2: nuts shall be tightened atthe positions2and5;

Budc 2 : xiet bulong tai vitri2 va 5;

+ Step 3: nuts shall be tightened at

the positions 3 and 6

Budc 3: xiet bulong tai vi tri 3 va 6.

+ Repeat the above steps until allthe nuts are firmly tightened/

Lap lai trinh tu d tren cho den khi

cac bulong duoc xiet cimg.

5.4 Sequence of pressure test/Ouv trinh thii dp

5.4 1 Pressure test for branch pipe / Tlur dp dug nluinh

Step 1: Check whether the pipe was installed properly with the drawings or not, the pipe must

be straight,notbent

Budc I : Kiem tra dudng ong da lap dat dung v&i ban ve , ong phcii thdng , khong bi non cong.

Step 2:Check and seal all outlet plugs.

Bw & c 2 : Kiem tra va bit tat cci cac dan cho nut bit.

Step3: Install valve,meterat the easily observable position

Biroc 3: Lap van , dong ho d vi tri de quan sat .

Step 4:Install an air drain valveatthe endof the pipe.

Biroc 4 : Lap 1 van xa khi d diem cuoiciiadudng ong .

Step5: Preparea bucket of clean water and pump water from this bucket into the pipe(Volume

of water prepared to pump into the pipe depends on the total internal volume of pipe for theleaking test).

Birdc 5: Chuan hi xo nude sqch de bom vao ben trong dudng ong ( tiiy theo tong the rich ben trong cua dudng ong can thirxi bao nhieu ma chuan bi the rich nude de bom vao cho tuong ling ).

Step6: Connect the suction head of the pump into the bucket of water above,and connect thepumphead into the outlet mentioned in step 3

Biroc 6: Ket noi dudng ong hutciiamay bom vao xo nude , dudng ong day vao ddu cho neu d bude 3 .

Step7: Startthe pump to pump water into the pipe

Budc 7: Khdi dong bom de bom nude vao ben trong dudng ong .

INSTALLATION GUIDELINES / rrtFITrt

HU'O'NG DAN LAP DAT CONG TY CO PHAN XAY DUNG SO 1

E Z L A N D

valve

Budc 9: Khi co nude chdy thanh dong ra d van xa khi thi khoa van nay lai.

Step10: Increase water pressure up to 10 bar Subscribe this pressure in about 30 minutes butthispressuremust notfall down over 0,6 bar.

Buac 10 : Nen dp lire nude len den 10 bar . Theo doi dp sudt nay trong khoang th&i gian 30 phut

vd dp sudt nay khong duac sut giam qua 0 , 6 bar.

Step 11: Checkall joints between pipes and fittings, and outlet plugs

Budc 11 : Kiem tra tat cd ede nidi noi giira ong vd phu kien, ede dan bit

Step 12: Increase the presure upto 12 bar and soak for 4 hours if there is no leakage after 30minute checking visually

Budc 12: Sau 30 phut kiem tra bang mat thudng neukhong thay xi thi nen dp dung bang 12 bar vd ngdm trong 4 gid.

Step 13: If thepressure drop is less than or equal to 0.2 bar after 4 hourchecking,the systemistight (no leakage)

Budc 13 : Sau 4 gid neu dp sudt sut dp nho hern hoac bang 0 , 2 bar thi he thong Id kin ( khong bi

xi)

Step 14: Discharge waterand pressure inside the pipe and finish the leaking test

Budc 14: Xd dp xudt vd nude ben trong dudng ong , ket thuc qua trinh thirxi .

F

5.4 2 Pressure test for main pipe / Thiir ap on <zchinh

Step 1: Check whether the installed pipes is straight and supports are fully installated or not

Budc 1: Kiem fra duovg ong true da lap plidi thang vd duac lap day dii gid do.

Step2: Lock all of branch valves

Budc 2 : Khoa tat ca ede van thong vdo tang

Step 3: Install pressure meter at the lowest position of the axis at which leaking test is beingchecked

Budc 3: Lap dqt dong ho dp sudt d vitrithdp nhat ciia true dang thirxi .

Step 4: Add water into the pipe by pouring water into the top end of the vertical pipe or

pumpingwaterfrom the bottom end of the vertical pipe, discharge air inside the pipe

Budc 4: Cho nude vdo day trong true bang each do nude vdo dau tren cua ong true dung hoac bam vdo tuphla dudi ciia true dung , duoi liet kill trong dudng ong ra ngodi.

Step 5:Lock valve at the top endof the pipe or seal the top end of the pipe by welding

Budc 5: Khoa van d dan tren cung cua true hoac hdn bit dau tren cung cua dudng ong lai .

Step6: Increase water pressure up to 12 bar. Subscribe this pressure in about 30 minutes butthis pressure must not fall down over 0,6 bar.

Budc 6: Nen dp lire nude len den 12 bar. Theo doi dp sudt nay trong khoang thdi gian 30 phut

vd dp sudt nay khong duac sut giam qua 0 , 6 bar.

Page |13FIRE PROTECTION