PIPING CODE

PRESENTED BY : MUHAMMAD NASIRJuly 30, 2009

Definitions:

piping: assemblies of piping components used for fluid flows. Piping also includes piping supporting element, but does not include support structures…or equipment..

piping components: mechanical element suitable for joining or assembly into pressure–tight fluid–containing piping systems…pipe, tubing, fittings, flanges, gasket, bolting, valves and devices such as expansion joints, traps, strainers etc.

piping system: interconnected piping subject to the same design conditions

Code: set forth minimum requirements for design, material, fabrication, erection, testing, and inspection.

• Provide a set of requirements for obtaining a safe, reliable and economical installation.

• For example: ASME B31- Code for Pressure Piping

Definitions:

Piping Development Process

1. Establish applicable system Code2. Establish design conditions3. Make piping material decisions

• Material of construction• Determine wall thickness• Valves

4. Establish preliminary piping system layout and support configuration

5. Perform flexibility analysis6. Finalize layout and bill of material7. Fabricate and install8. Examine and test

PRESSURE PIPING CODES

ASME B 31 (earlier known as ANSI B 31) B31 Code for pressure piping, developed by ASME

B31.1 Power Piping Electric power generating stations, geothermal heating

system, and central and direct heating and cooling system

B31.3 Process Piping Petroleum refineries, chemical, pharmaceutical, textile,

paper, and cryogenic plants; and related processing plants

PRESSURE PIPING CODES (Cont’d)

B31.4 Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids

B31.5 Refrigeration Piping and Heat Transfer Components

Refrigerants and secondary coolants

PRESSURE PIPING CODES (Cont’d)

B31.8 Gas Transmission and Distribution Piping Systems

Gas between sources and terminals, including compressor, regulating and metering stations, gas gathering pipelines

B31.9 Building Services Piping

Industrial, institutional, commercial, and public buildings, and in multi-unit residencies, which does not require the range of sizes, pressures, and temperature covered in B31.1

PRESSURE PIPING CODES (Cont’d)

B31.11 Slurry Transportation Piping Systems

Aqueous slurries between plants, and terminals and within terminals, pumping and regulating stations

ANSI Z223.1 National fuel gas code (earlier known as B31.2)

Fuel gas from the point of delivery to the connection of each fuel utilization device

ASME B31.3 Scope

Rules for the Process Piping Code Section B31.3 have been developed considering piping typically found in petroleum refineries; chemical, pharmaceutical, textile, paper, and cryogenic plants; and related processing plants and terminals.

ASME B31.3 Scope

This Code prescribes requirements for:• Materials and components• Design• Fabrication• Assembly• Erection• Examination• Inspection• Testing

of piping

ASME B31.3 Scope

This Code applies for all fluids, including:• Raw, intermediate, and finished chemicals• Petroleum products• Gas, steam, air, water• Refrigerants; and

• Cryogenic fluids

Exclusions

- Piping system designed for • internal gauge pressure > 0 and < 15psi• nonflammable, • non toxic, • not damaging to human tissue• design temperature -290C through 1860C

Boilers and piping required to conform to B31.1 Tubes and manifolds of fired heaters Pressure equipment such as pressure vessels and

pumps, including internal piping

ASME B31.3 Scope

SCOPE OF B31.3 PIPING

DESIGN

DESIGN (Cont’d)

DESIGN (Cont’d)

DESIGN (Cont’d)

Straight pipe under internal pressureFor t<D/6

DESIGN (Cont’d)

Straight pipe under internal pressureFor t<D/6

DESIGN (Cont’d)

FFC PIPING SYSTEM

Based on Snamprogetti’s piping specification

Separate specification for Plant-I & Plant-II

Comprises of three letters XYZ, for e.g. 11A, 13B, 33A, 88D etc.

53A

DECODING OF SP’s PIPING SPECS.

X Y Z

X -- Numerical, piping material

1,2 = Carbon Steel 3 = Stainless Steel 5 = Killed Carbon Steel, Low Alloy 7 = Carbon Steel, Low Alloy 9 = Special alloys, steel

DECODING OF SP’s PIPING SPECS. (Cont’d)

Y -- Numerical, rating 1 = 150 LB 3 = 300 LB 4 = 400 LB 5 = 600 LB 6 = 900 LB 7 = 1500 LB 8 = 2500 LB 9 = Special

DECODING OF SP’s PIPING SPECS. (Cont’d)

Z -- Alphabetic Depends on service condition and fluids handled

Example: 11A means

1 -- Carbon Steel

1 -- 150 LB rating

Service -- Raw water, clarified water,

Utility air, CO2 Compressor suction

INFORMATION AVAILABLE

Pipe material & manufacture • API 5 L Gr B seamless/ ERW / SAW, ASTM A-333

Gr. 1, ASTM A- 312 TP 304L, etc.

Valves types and specification according to line size

• VS 215 A01 SW, VD 311 A01 RF, etc.

Piping fitting & components with their material• Elbow 3000# SW 0380.00 ASTM A-105

INFORMATION AVAILABLE (Cont’d)

Pipe size and thickness• 10” 6.35 mm

INFORMATION AVAILABLE (Cont’d) Pressure-Temperature rating

• 1000C 18 kg/cm2

INFORMATION AVAILABLE (Cont’d)

Corrosion allowance

Welding specification • W310

Piping class• 1, 2, 3 or 4

INFORMATION AVAILABLE (Cont’d)

Special note• Heat treatment,