This document provides a user's design specification for a knock out drum (V-002) to be installed offshore in Indonesia. It specifies the design will follow ASME Section VIII Division 2 and includes key details such as: - The drum will be vertically installed to separate oil, water and gas at pressures up to 5,000 kPa and 225°C. - Materials will include SA516M steel for the shell/heads and SA105M steel for other components. - Fatigue analysis is not required based on experience with similar existing equipment. - The user will be responsible for designing, supplying and installing the required pressure relief valve. - Inspection and testing will follow ASME Section VIII Division 2

1. USER’S DESIGN SPECIFICATION
KNOCK OUT DRUM , V–002
FOR
PT. ABC OFFSHORE LIMITED
Document Number: NSB/DEMO/D2/UDS/001
(No. of Pages : 5)
0 20-1-2011 Issued For Construction AMD C. Blanca GeorgeClivan
REV DATE DESCRIPTION PREPARED CHECKED APPROVED
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2. Contents
1. Scope 3
2. Reference 3
3. Design 3 - 4
4. Material 4
5. Summary of Design Specifications and Design Conditions 4 - 5
Attachment:
Mechanical Data Sheet Number: W100-V-S-016D Rev 2 (sht 1 & 2)
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3. 1. Scope
This specification describes the requirement for the design, fabrication, inspection, testing and supply
of Knock-Out Drum, Tag No V-002 as in accordance with ASME Code Section VIII Division 2, 2013
Edition.
2. Reference
a) ASME Code Section VIII Division 2, 2013 Edition
Rules for Construction of Pressure Vessel - Alternative Rules.
3. Design Specifications
3.1 Design shall be made in accordance with ASME Code Section VIII Division 2, 2013 Edition and
the attached Pressure Vessel Data Sheet.
The design method shall comply with the requirements of Part 4 – Design-By-Rules Method of
the Code.
3.2 The vessel shall be installed on board an offshore production platform located in Indonesian
Water.
Based on experience with comparable equipment operating under similar conditions, fatigue
analysis of Knock-Out Drum Tag No V-002 is not required, as in accordance with Part 5 Para
5.5.2.2 of the Code.
3.3 Vessel shall be for Non-lethal service
3.4 Contents: Oil, Water and Gas. Density of Contents - 920 kg/m3
3.5 Lowest one day minimum one day mean temperature at installed location + 22 deg C.
Minimum Design Metal Temperature – 0 deg C
3.6 Pilot Operated Pressure Relief Valve shall be provided for this vessel. The User shall be
responsible for the design, supply, construction and installation of the required Pressure Relief
Valve.
3.7 The following type of loading shall be considered in the design of the vessel :
Type of Loading Requirements
1 Internal Pressure Yes
2 External Pressure No
3 Static Head Yes
4 Dead Weight of the vessel Yes
5 Weight of the normal contents ( operating condition ) Yes
6 Weight of the test condition Yes
7 Superimposed static reactions from weight of attached equipment No
8 Reaction of support (saddles, skirt, legs, lugs, etc. ) Yes
9 Reaction of internals, lifting lugs No
10 Wind loading No
11 Snow loading No
12 Earthquake loading No
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4. 13 Impact reactions ( such as due to rapidly fluctuating pressure) No
14 Temperature gradients N/A
15 Differential thermal expansion N/A
16 Fatigue analysis Not required
based on
similar existing
equipment,
refer to para 5.
(F) for further
details
17 Nozzle loads No
18 Others No
Design Load Combination shall be determined in accordance with Part 4 Table 4.1.2 of the Code.
4. Material
Manufacturer shall use the following material for the Construction of Knock-Out Drum Tag No
V-002.
Shell / Heads : SA 516M 485 N
Flanges : SA 105M N
Forged Nozzle necks : SA 105M N
Pipes : SA106 Gr. B
Bolts, Stud / Nuts : SA 193M Gr. B7 / SA 194M Gr. 2H
Skirt / Base Plate / Gusset, etc : SA 36M
Deflector : SA 36M
SA105M N material shall have max. C Content of 0.25% and shall be UT tested to SA388
All materials shall be selected and to be acceptable in accordance with Part 3 of the Code
5. Summary of Design Specifications and Design Conditions
(A) Installation Site
1) Location Suluwasi, Indonesia
2) Jurisdictional Authority No
3) Environmental Conditions
i) Wind Design Load No
ii) Earthquake Design Load No
iii) Snow Load No
iv) Lowest One Day Mean
Temperature
22°C
(B) Vessel Identification
1) Vessel Tag No. V-002
2) Service Knock-Out Drum
(C) Vessel Configuration and
Controlling Dimensions
1) Outline Drawing Yes, Refer to W100-S-S-016D Rev 2 sht2/2
2) Vertical or Horizontal Vertical
3) Openings, Connections, etc Refer to attached drawing
4) Gross Volumn of Vessel 2.49 m³
5) Support Method Skirt with Base Ring
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5. (D) Design Conditions
1) Design Pressure 5,000 Kpa (internal)
2) Design Temperature 225°C
3) MDMT 0°C
4) Dead Load, Live Load and Other
Loads
Refer to para 3.7 above
(E) Operating Conditions
1) Operating Pressure 4,500 Kpa
2) Operating Temperature 225°C
3) Fluid Properties Mixture of Oil, Gas and Water, S.G. – 0.92
(F) Design Fatigue Life
1) Cyclic Operating Conditions Not required based on existing similar units.
The following are predicted operating pressure
cycles during its life span.
Full Pressure Cycles - N<30
Pressure Fluctuation<10% – N<1000
Pressure Fluctuation -10% to 15% – N<120
Pressure Fluctuation – 15% to 20% – N<60
Pressure Fluctuation>20% - N<50
Temperature Gradient – N/A
Differential Expansion – N/A
2) Design Life Span 25 years
3) Equipment Experience Yes, based on existing similar units
(G) Material of Construction
1) Material Specifications Refer to attached data sheet and para 4 above
2) Generic Material Type Refer to attached data sheet and para 4 above
3) Corrosion Allowance 3.0 mm
4) Damage Mechanism associated
with fluid
Not Applicable
5) Additional toughness required Not Applicable
(H) Load and Load Cases
1) User to specify loads Refer to para 3.7 above
2) Loading Data
i) By Calculations Yes
ii) By Experimental Methods No
iii) By Actual Experience No
iv) By Computer Analysis No
v) By Published Data No
(I) Overpressure Protection
1) User shall be responsible for the
design, construction and installation
of overpressure protection system.
Specified and Designed by User
2) Type of Overpressure Protection
Intended
Pilot Operated Relief Valve
3) System Design By User
4) Jurisdictional Acceptance Not Required
(J) Additional Requirements
1) NDE Yes, as per Div 2 Code Table 7.2
2) Type of Weld Joints As per Div 2 Code Table 4.2.2
3) Mandatory/Non-Mandatory
Requirements
Not Applicable
4) Any Special Requirements Not Applicable
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6. 5) Requirements for Seals Not Applicable
6) Erection Loadings Not Applicable
7) Operational and Maintenance
Control
By User
8) Specific Requirements for
Hydrotest
i) Test Fluid Portable Water
ii) Test Position of Vessel Vertical
iii) Test Location Manufacturer’s Premises
iv) Cleaning and Drying after test Yes
v) Pressure Test Method Hydrostatic
vi) Application of Paint, Coating,
Lining
Paint system shall be applied only after
hydrotest. Refer to attached data sheet, W100-
S-S-016D Rev 2 Sht 1/1 for paint system
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7. 5) Requirements for Seals Not Applicable
6) Erection Loadings Not Applicable
7) Operational and Maintenance
Control
By User
8) Specific Requirements for
Hydrotest
i) Test Fluid Portable Water
ii) Test Position of Vessel Vertical
iii) Test Location Manufacturer’s Premises
iv) Cleaning and Drying after test Yes
v) Pressure Test Method Hydrostatic
vi) Application of Paint, Coating,
Lining
Paint system shall be applied only after
hydrotest. Refer to attached data sheet, W100-
S-S-016D Rev 2 Sht 1/1 for paint system
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