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 padabeberapa 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-LangkahFabrikasi

Fabrication of Pressure VesselDalam topik ini kami akan membahas pressure vessel yang digunakan pada instalasi pengolahan minyakmentah dengan kategori low pressure vessel dengantekanan 60 psi yang berfungsi untuk memisahkanminyak mentah dengan gas beracun (metan, ammonia, sulfida) yang biasa disebut gas boot denganmenggunakan material baja A 516 Grade 70 denganpertimbangan :

� 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 padaperhitungan kekuatan bahan sesuaistandard ASME Sec. VII Div. I yang kemudian didapatkan hasil berupaallowable stress dan dapatmenentukan material apa yang akan digunakan sesuai tabel padastandard ASTM (American Standard of Testing & Material)

Fabrication of Pressure Vessel

Tabel standard material baja

ASTM

GENERAL ARRANGEMENT

General Arrangement

Fabrication of Pressure VesselAda 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

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 - -

Abbreviations:VIS : VisualPT : Penetrant TestRT : Radiography TestUT : Ultrasonic Test

Note1. Spot RT shall be performed in accordance with the requirement of ASME Sec. VIII - Div.12. Long weld for Nozzle neck / MH shall be Performe full RT

NDE METHODNO EXAMINATION AREA

5

4

10

3

7

121

2

8

6

13

11

9

Fabrication of Pressure VesselCuplikan Video pembuatan pressure vessel