▣ Standards Applied in Piping Design Calculations
1) Piping
- Power Piping ANSI/ASME B31.1
- Process Piping ANSI/ASME B31.3
- Flanges ANSI, B16.5
2) Pressure Vessels
- Unfired ASME, Sect. I & VIII, Div.1
- Unfired Steam Boilers ASME, Sect. I
- Fired Steam Boilers ASME, Sect. I
3) Safety Relief Systems
- Safety Valves API RP520 and API RP521
- Header ASME, Sect. I and VIII
4) Pumps
- Centrifugal API 610
- Reciprocating API 674
5) Compressors
- Centrifugal API 617
- Reciprocating API 618
- Air Compressor (Centrifugal) API 672
6) Steam Turbines API Std 611 & 612
7) Exchangers ASME Section VIII & TEMA
8) Flammable and Combustible Liquid Storge NFPA Volume 1
9) Foam Extinguishing Systems NFPA Volume 7
10) Storage Tanks
- Atmospheric Pressure API Std 620, 650, 2000
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▣ ASME B31.1 – 2001 – Power Piping
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Application: Piping for industrial plants and marine applications.
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Requirements: Prescribes minimum requirements for design, materials, fabrication, erection, testing, and inspection of power and auxiliary service piping systems for central and district heating plants, power-generating stations, and other facilities.
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Pressure: Applies to external piping for power boilers generating steam at pressures greater than 15 PSIG and to hot water boilers operating at pressures exceeding 160 PSIG or 250°F.
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▣ ASME B31.2 – 1986 – Fuel Gas Piping
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Status: Replaced by ANSI / NFPA Z223.1 but still valid for use within ASME.
- Use: Considered a reference standard for the design of gas piping systems.
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▣ ASME B31.3 – 2002 – Process Piping
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Application: Applied to process piping in chemical and petroleum refineries.
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Coverage: Codes for processing and refining hydrocarbons, water, steam, chemicals, and other fluids, including rules for materials and components, design, fabrication, assembly, examination, and testing.
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Usage: Used in chemical plants, pharmaceutical plants, textile, paper, semiconductor, cryogenic plants, and related facilities, and generally applicable to petrochemical plants.
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▣ ASME B31.4 – 2002 – Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids
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Application: Applies to the design, materials, fabrication, assembly, erection, examination, inspection, and testing of piping transporting liquids such as crude oil, condensate, gasoline, LNG, LPG, CO2, alcohol, and anhydrous ammonia.
- Facilities: Used in natural gas plants, tank farms, terminals, ammonia plants, and other facilities.
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▣ ASME B31.5 – 2001 – Refrigeration Piping and Heat Transfer Components
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Application: Covers requirements for heat transfer components, refrigerant inspection, and auxiliary (cooling water) piping for cryogenic services.
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Exclusions: Does not apply to water piping or pressure vessels and piping under 15 PSI (105kPa) for non-critical systems.
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▣ ASME B31.8 – 2003 – Gas Transmission and Distribution Piping Systems
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Application: Covers testing of pipeline facilities used for the transportation of gas.
- Coverage: Includes operational and maintenance safety of the system.
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▣ ASME B31.8S – Integrity Management System for Gas Pipelines
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Application: Applies to gas pipelines and related systems transporting gas.
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Approach: Provides principles and processes for implementing an integrated management program for pipeline system integrity using proven practices and processes.
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▣ ASME B31.9 – 1996 – Building Services Piping
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Application: Regulations for piping systems in industrial, commercial, and public buildings that do not require the size, pressure, or temperature criteria of B31.1.
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Coverage: Prescribes requirements for design, materials, fabrication, assembly, erection, inspection, and testing of piping systems.
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▣ ASME B31.11 – 2002 – Slurry Transportation Piping Systems
- Application: Specifies design, construction, inspection, and security requirements for slurry piping systems.
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[ Differences in Calculation Methods by Design Code ]
▣ ASME B31.X Calculation Differences
▣ Power Piping B31.1
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▣ Process Piping B31.3
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▣ Gas Transmission Piping B31.8
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