Diskusi Crossing Sal Primer Wampu Dengan Jalur Pipa

7/31/2019 Diskusi Crossing Sal Primer Wampu Dengan Jalur Pipa

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Alternatif Solusi


2/22

Sal Primer

Bendung & intake


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6/22

Elevasi tanah eksisting + 9.00

Elavasi pipa + 8,50

Elevasi Muka air rencana + 9.16

Elevasi dasar rencana saluran + 7.80

Elevasi Tanggul rencana saluran + 9.80


7/22

Elevasi dasar di naikkan agar tidak menabrakjalur pipa gas pada elevasi tanah asli (+ 9.00)

Agar Muka air t idak menjadi lebih

tinggi/ mencegah aliran balik yang terlalubesar maka saluran di lebarkan menjadi 20 m

Beresiko terjadi sedimentasi di hulu karenabangunan akan berfungsi sebagai mercu

bendung di dalam saluran primer danmenimbulkan backwater setinggi 15cm dihulu


8/22

90 100 110 120 130 140

8.0

8.5

9.0

9.5

utama Plan: Plan 03 7/27/2012

Main Channel Distance (m)

Elevation(m)

Legend

WS PF 1

Ground

LOB

ROB

utama wampu

Pipa Gas


9/22

Perbandingan prof i l M uka a i r saluran norm al & Saluran dengan M ercu

Reach River St a Pro f ile Plan B Q To t al M in Ch El W .S. Elev Vel Chn l

(m ) (m 3/ s) (m ) (m ) (m / s)w am pu int ake Norm al Plan 02 9.00 11.77 8.10 9.45 0.74

w am pu In t ake M ercu Plan 03 9.00 11.77 8.10 9.60 0.64

w am pu St a 500 Norm al Plan 02 9.00 11.77 8.00 9.35 0.74

w am pu St a 500 M ercu Plan 03 9.00 11.77 8.00 9.54 0.61





w am pu cross aw al Norm al Plan 02 9.00 11.77 7.80 9.16 0.74

w am pu cross aw al M ercu Plan 03 20.00 11.77 9.00 9.37 1.28

w am pu cross akh ir Norm al Plan 02 9.00 11.77 7.80 9.15 0.74w am pu cross akh ir M ercu Plan 03 20.00 11.77 9.00 9.28 1.68






10/22

0 200 400 600 800 1000 1200 1400 1600 18007.5

8.0

8.5

9.0

9.5

10.0

10.5

utama Plan: 1) Plan 02 7/27/2012 2) Plan 03 7/27/2012

Main Channel Distance (m)

Elevation(m)

Legend

WS PF 1 - Plan 02

WS PF 1 - Plan 03

Ground

LOB

ROB

utama wampu


11/22

0.3

0.2 0.1

0.05


Legend

WS PF 1

Ground

Levee

BankSta


12/22

0.3

0.2

0.10.05


Legend

WS PF 1

Ground

Levee

BankSta


13/22

Pipa gas di pindahkan ke elevasi yg lebihrendah / berada di bawah saluran primerdengan batas aman yg di tentukan ( + 2m )

Dilakukan dengan cara hot tapping dan linestopping waktu pelaksaan 4- 7 hari denganeksekusi hot tapping 1- 2 jam

Membutuhkan teknis dan peralatan khusus

untuk pelaksanaanya Membutuhkan alokasi biaya khusus


14/22

W h a t is H o t T a p p in g ? A Hot Tap is defined as using a dr ill ing machine to cut a

hole into an in- service, under- pressure piping system.

This is done without service interrupt ion or productleakage. Typical appl ications of a Hot Tap includemaking a branch connection, init iating a bypass andallowing performance of a Line Stop.

Components required to perform a Hot Tap normallyinclude a f it t ing designed to contain system pressure, avalve used to control the new connection and a dri ll ingor tapping machine.

http :/ / www.easervices.com/ tap.htm


15/22

Available in size ranges 1/ 2 inch through 60 inch diametercut sizes and a boring bar stroke (reach) of over 120 inches.

Available off the shelf for up to 1480 psig/ (102 Bar)

maximum operating pressure and temperatures as high as700F. (370 C )Custom designs and packers offered forhigher system requirements. Power driven with pneumatic orhydraulic dr ives featuring a new level of sophistication anddependability.

Complete dimensional compatibili ty with industry standardsof consumables and equipment. This means that most othermajor brands of cutters, pilot drills, holders, adapters, etc.will also f it onto new generation of equipmen



16/22

Line Stopping is a means of temporari ly

insert ing a plugging device to shut of fthe flow of an in- service piping system.

Line Stopping can be used to isolatesect ions of pipe for repair, maintenance,

or reconfiguration such as adding

valves.

If used with a bypass, work can be

performed without service interruptions.



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http:/ / mccoypiping.com/ index.html


18/22

http:/ / www.psi- tap.com/ hottapping.html


19/22

http:/ / mccoypiping.com/ index.html


20/22

htt p:/ / www.tapmasterinc.com/ LineStop.ht ml


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A l t 1 A l t 2

Perubahan konstruksi saluran Konst ruksi saluran tet ap

Masalah Sedimentasi danbackwater

Tidak ada masalah sedimentasidan backwater

Butuh kegiatan OP Khusus t idak memerlukan OP khusus

Konstruksi pipa tidak di rubah Ada Sub Pekerjaan spesif ik hottapping dan line stopping


22/22

Diskusi Crossing Sal Primer Wampu Dengan Jalur Pipa

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