Piping Checklist for 60% 3D Model Review

60% model review is one of the reviews planned in all the EPC projects execution at different stages- 30%, 60% and 90% of design completion. 60% 3D model review is an intermediate review which take place when the final structural steel, final equipment and the majority of the major piping runs, duct-work, instrument and electrical trays have been MODELLED. The ...

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Piping Checklist for 30% 3D Model Review

In all the EPC project which are been executed on 3D model, it is planned to have 3 formal model reviews at Stages 30%, 60% and 90% of design completion. These stages are linked to the project schedule in respect of the supply of engineering information from upstream disciplines (Process, Mechanical, Instruments etc.) being at a status of Preliminary, Intermediate ...

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Steam Turbines: Force/Moment Calculation

NEMA – SM 23 requires that the forces and moments acting on steam turbines due to the steam inlet, extraction, and exhaust connections should be evaluated by simple set of force/moment calculation similar to centrifugal compressors. These computations shall be done as below. The total resultant force and total resultant moment imposed on the turbine at any connection should not ...

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Dropped Object Hazards In Oil and Gas Industry

During any lifting operation, either from a supply vessel to the installation or from within the installation or plant itself, there is a potential risk when objects are being lifted for a dropped object accident to occur. Some of the cases wherein large objects may be dropped during lifting operations are: Construction, onshore, inshore or offshore, where large objects may ...

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Basic Load Cases used for Piping Stress Analysis

Following steps shall be carried for Piping Stress Analysis of any system, Identify the Critical lines from the P&ID based on the criteria mentioned in the Piping Stress Analysis Design Basis. Prepare a Stress Critical Line list Categorize the lines as Category-1 (Extensive computer analysis required), Category-2 (Visual Analysis or by Nomo graphs, etc.) and Category-3 (Non-critical lines) Segregate the ...

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Flexibility Calculation/Stress Analysis: Softwares Used and Data Required

Softwares available for flexibility calculation/stress analysis Manual analysis has its limitation on the number and type of supports, the variation in temperature to which the system is subjected and the like. Hence solving a real live size problem is difficult or impossible by the manual methods. There are number of softwares available to handle complex problems. The first computer analysis ...

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Flexibility Stresses: Code Equations

Flexibility stresses The piping system experiences different type of stresses when it is installed, tested and in operation. There are different codes according to which the system is designed, each code has different formula for calculating the stress induced in the piping system. Below mentioned are the code equations: 1. ANSI B 31.1 – Power Piping The Power Piping Code ...

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Safety Relief Valve: A Pressure Relieving Device

Table of contents: 1. Relief System 2. API 521 Sizing Criteria 3. Relief System – Pressure Terminology 4. Code Requirements 5. Pressure relieving methods 6. Relief valves 7. General Types of Safety Relief Valve Design 8. Advantages / Disadvantages Conventional Valve 9. Balanced Bellows Spring Loaded Safety Relief Valve 10. Advantages / Disadvantages Balanced Bellows Valve 11. Piston Type Pilot ...

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