Pipa PE mempunyai keuntungan terutama masalah korosi jika dibandingkan dengan pipa baja karena tidak perlu cathodic proteksi , external protection dan corrosion inhibitor tetapi juga mempunyai kelemahan yaitu temperatur operasi rendah dan tekanan operasi rendah .

Tanya – Ical Murtalak

dear All,

mohon informasinya untuk subject di atas.
terima kasih.

Tanggapan 1 – naila mubarok

Pipa PE mempunyai keuntungan terutama masalah corrosi jika dibandingkan dengan pipa baja karena tidak perlu cathodic proteksi , external protection dan corrotion inhibitor tetapi juga mempunai kelemahan yaitu temperaur operasi rendah dan tekanan operasi rendah .

Sekarang sudah ada jenis pipa PE yang disebut RTP (reinforced thermoplastic pipe) yang katanya berdasakan spesifikasi mampu dilakukan hydrostatik pada tekanan 100 bar (MOP: 52 bar untuk minyak, MOP :72 bar untuk air) max temp Op :65 oC, untuk gas dihidrostatik 84 bar MOP 25 bar MOT ambient. sedangkan untuk water injection jenis RTP heavy FAT pada 195 bar MOP 150 bar MOT 65 oC. Burst Pres >303 bar. RTP baru dapat diproduksi OD max 6 inci.

Keunggulan lainnya satu joint (coil) 400 m sehingga kecepatan menggelar katanya 10 km per hari dan dapat di recoil. Pemasangannya dapat ditanam atau di gelar di atas tanah.
untuk informasi lebih lanjut dapat di acses melalui www.solluforce.com

terima kasih.

Tanggapan 2 – ahidayat@tycoeurapipe

Dear Pak Murtalak and Milisters

Dalam hal procedure Pemasangan HDPE into flowline oil and gas, yang perlu kami ketahui adalah :

1. Diameter pipa yang akan bapak pasang

2. Kategori lokasi pemasangan

3. velocity dan space mesin butt welding.

Mudah-mudahan kami bisa Bantu Bapak, karena kami kebetulan memdalami pipa HDPE di Indonesia sejak tahun 1996.
Dengan memberikan advisor tehnical kepada bapak, mudah-mudah bermanfaat.

Tanggapan 3 – Andreas Halim

Kebetulan saya baru terlibat di proyek HDPE pipelines.

Menurut saya, akan lebih baik kalau procedure pemasangan HDPE ini disiapkan oleh subkon, karena pekerjaan ini specialty work.

Ini website subkontraktor yg kami pakai, PIHA.

http://www.piha.com.au/

Mungkin yg lain dapat menambahkan…

Tanggapan 4 – Wahyu

Pak Murtalak,

garis besar procedure pemasangan HDPE (foam filling) yang pernah kami lakukan untuk offshore area. mungkin bisa juga untuk area lain. Semoga membantu.

Seperti dibawah ini :

PU Foam Dispensing Equipment:

The polyurethane foam dispensing equipment consists of two individual storage tanks, controlled ratio pumps and flushing valves. The two component materials are pumped from the tanks via the fixed ratio pumps down separate insulated lines to the mixing head where it is mixed through static mixers. The mixing head is further fitted with controls to operate material mixing and air flushing operations.

Mixing ratio between the 2 foam components should be measured and checked

Expendable Moulds

The disposable polyurethane foam infill mould consists of an expendable metallic sheet that is rolled circumferentially around the pipe. The mould ends are further lined with a fiber sheet to prevent possible leakage from the injected polyurethane foam. An infill port is fabricated at the 12 O’Clock position of the mould to allow the mould to be filled. Securing of the mould is carried out by the use of banding straps.

Procedure

1. Prior to fitting the mould check the field joint area to ensure that it is uncontaminated, substantially dry and is in a suitable condition for foam infill

2. Where necessary a gas torch may be used to remove excessive surface moisture on the concrete interface.

3. Fit the mould and fibre liner to the field joint ensuring an equal overlap on either side of the field joint. Check the injection port is at the central 12 o’clock position relative to the field joint. Fix firmly in position using suitable banding straps.

4. Ensure mould ends are sealed to prevent significant spillage.

5. Place the foam injection equipment in a suitable position.

6. Check that the inter-space is unobstructed.

7. The correct volume of mixed PU foam compound will then be injected into the injection port. Once the expanding foam has risen to the top of the mould, it will be closed using a hand held former and curing allowed to complete.

8. Flush the mixing chamber using water into a suitable closed bin.

9. Any excess foam will be trimmed from the ports.