PRESSURE VESSEL [Proses Pembuatan Pressure Vessel]

Fabricating of Pressure Vessel Kelompok 10: 1.Luthfie Ahmaddani (0706198663) 2.Rohman Hidayah (0706198814) 3.I Gede Wahyu Widiatmika Ariasa (0706198594) 4.Budi Susanto (0706198404)

Fabrication of Pressure Vessel


Design Standard : 

ASME Section VIII Div. 1

Fabrication of Pressure Vessel


Jenis Umum Material Pressure Vessel:  

Baja Stainless steel

Fabrication of Pressure Vessel


Pemilihan material didasarkan pada beberapa hal yaitu :     

Fungsi pressure vessel Tekanan fluida Allowable stress Kemudahan fabrikasi Biaya

Fabrication of Pressure Vessel Engineering Chart:
Desain Vessel yang Sesuai
Proses Gambar Teknik yang meliputi Gambar Fabrikasi
Kalkulasi Take-Off Material yang di Butuhkan
Melakukan Perkiraan Langkah-Langkah Fabrikasi

Fabrication of Pressure Vessel Dalam topik ini kami akan membahas pressure vessel yang digunakan pada instalasi pengolahan minyak mentah dengan kategori low pressure vessel dengan tekanan 60 psi yang berfungsi untuk memisahkan minyak mentah dengan gas beracun (metan, ammonia, sulfida) yang biasa disebut gas boot dengan menggunakan material baja A 516 Grade 70 dengan pertimbangan :  Fungsi  Tekanan & kekuatan (low pressure vessel)  Biaya  Kemudahan fabrikasi

Fabrication of Pressure Vessel Aliran perencanaan pemilihan material Fluida

Tekanan

Allowable stress

Material & Thickness

Pemilihan material didasarkan pada perhitungan kekuatan bahan sesuai standard ASME Sec. VII Div. I yang kemudian didapatkan hasil berupa allowable stress dan dapat menentukan material apa yang akan digunakan sesuai tabel pada standard ASTM (American Standard of Testing & Material)

Fabrication of Pressure Vessel

Tabel standard material baja ASTM

General Arrangement

GENERAL ARRANGEMENT

Fabrication of Pressure Vessel Ada 5 langkah penting dalam proses fabrikasi gas boot
Fabrikasi  Marking  Cutting  Rolling (Untuk shell & skirt)  Machining (Jika diperlukan)  Welding  Finishing ( Flush Grinding)
Assembly
NDE
Finishing  Sand blasting  Painting
Trasportation & Installation

Fabrication of Pressure Vessel Bagian – bagian utama gas boot :
Head
Shell
Nozzle
Skirt & Accessories (Ladder, lifting lug, dll)

Fabrication of Pressure Vessel


Proses Fabrikasi Head   

Marking Cutting Forging

Fabrication of Pressure Vessel


Head

Fabrication of Pressure Vessel

Head Before Forming

Head After Forming

Fabrication of Pressure Vessel


Proses Fabrikasi Shell     

Marking Cutting Rolling Beveling Welding

Fabrication of Pressure Vessel


Shell

Fabrication of Pressure Vessel

Rolling

Beveling

Welding

Welding shell to shell

Fabrication of Pressure Vessel


Proses Fabrikasi Nozzle    

Marking Cutting Machining (jika diperlukan) Welding

Fabrication of Pressure Vessel


Nozzle

Fabrication of Pressure Vessel

Fabrication of Pressure Vessel


Proses fabrikasi Skirt & Accessories (Ladder, lifting lug, dll)  Marking  Cutting  Machining (jika diperlukan)  Rolling (Untuk Skirt)  Welding

Fabrication of Pressure Vessel


Skirt & Accessories

Fabrication of Pressure Vessel

Base Ring

Lifting Lug

Clip Support

Chimney

Fabrication of Pressure Vessel

Clip Support

Riser

Sleeve

Fabrication of Pressure Vessel


Proses Assembly :  

Welding Flush Grinding

Fabrication Sequence Diagram

Fabrication of Pressure Vessel

Fabrication of Pressure Vessel


NDE (Non Decstructive Examination) meliputi :  Radiography  Penetrant test  Ultrasonic test

5 11 4

NO

EXAMINATION AREA

NDE METHOD VIS PT RT UT

1

Bottom Head to Shell

-

-

2

Long seam

-

-

3

Shell to Shell

-

-

4

Top Head to Shell

-

-

5

Neck Nozzle to Head

-

6

Neck Nozzle to Shell

-

-

7

Neck Nozzle to Shell

-

-

8

Baffle Plate to Inner Shell

-

-

9

Pad Channel to Inner Shell and Pipe

-

-

10 Stiff Ring to Shell

-

-

11 Lifting Lug

-

-

12 Skirt to Bottom Head

-

-

13 Base Plate to Skirt / Tailing Lug

-

-

8

10

9

2

Abbreviations: VIS : Visual PT : Penetrant Test RT : Radiography Test UT : Ultrasonic Test

3 6 7

12 1

Note 1. Spot RT shall be performed in accordance with the requirement of ASME Sec. VIII - Div.1 2. Long weld for Nozzle neck / MH shall be Performe full RT

13

Fabrication of Pressure Vessel Cuplikan Video pembuatan pressure vessel