Plan Elevation and Section Drawings Dwg

System Drawings Sections and Elevations

Arrangement DRAWINGS

The organisation drawing is the most significant drawing adult by a piping designer. This plan view drawing is a major source of information used in the fabrication and erection of the piping facility. Information on the organisation drawing aids in the development of the piping model and isometric drawings.

The pipe organisation cartoon evolves from the foundation location and equipment location drawings. Information technology shows all mechanical equipment and vessels in the unit and the pipes connecting them, including manholes, ladders, platforms, and davits. It identifies all structural supports such as pipage racks, equipment structures, columns, braces and any fireproofing they may accept. Once locations for foundations and equipment have been established, piping configurations are added to the drawing with the help of symbols that represent fittings, flanges, and valves.

Written information placed on the arrangement cartoon includes equipment coordinates, identification numbers, height callouts, line numbers, flow arrows, and dimensions establishing pipage locations. Instrumentation symbols are included to indicate type, position, and orientation for accessibility past plant personnel. Ladders and platforms are also shown on equipment and structures that accept them. A nozzle schedule is included that contains detailed information about all pipage and musical instrument connections for every piece of equipment. Information such as nozzle number, size and pound rating, orientation, elevation, and projection is also included. With and so much required information on a drawing, it is easy to sympathise why the piping organization drawing must be neat, accurate, and legible.

RESPONSIBILITIES OF THE Piping DESIGNER

Only after many years of experience does the drafter become a piping designer. The time invested in learning company specifications, layout procedures, and equipment requirements makes the designer a valuable employee.

As the arrangement cartoon is being developed, a piping designer should consider the following:

How can the cartoon be simplified? How will construction, repairs, and routine maintenance be performed in this unit of measurement? Has enough room been provided for access between equipment? Foremost on a designer's mind should be the safety and protection of plant operators and maintenance personnel.

Information SOURCES FOR PIPING Organization DRAWINGS

A piping designer must gather the diverse reference drawings and documents needed to lay out the piping arrangement cartoon. These may include:

• mechanical flow diagram

• foundation or equipment location program

• pipe index drawing

• equipment (vendor) drawings and foundation drawings

• piping specifications

• listing of special requirements, if any, for the project

LAYOUT PROCEDURES

To develop a pipe arrangement cartoon, the designer must be familiar with visitor and client chore specifications and requirements of the current project. Many different layout and blueprint techniques can exist used depending on client requirements, company policy, upkeep limitations, manpower, and available calculator software.

Pipe organisation drawings are quite circuitous and congested. Therefore a systematic layout procedure is recommended to ensure all necessary items are included. The following are the recommended procedures for layout of piping system drawings.

i. Define proposed area outline or cartoon lucifer lines.

2. Fill in cartoon number and title cake data.

3. Place a northward arrow in upper right-hand corner of the drawing.

4. Locate foundations for buildings, pipe rack columns, and mechanical equipment from the coordinates used to develop the foundation location drawing and dimensions provided on the equipment foundation drawing.

five. Describe equipment foundations.

six. Lay out equipment.

• Show only enough particular on equipment outlines to provide a generalized description.

• Represent equipment centerlines, outlines, and foundations with thin night lines.

• Show all piping and instrumentation connections (nozzles, couplings, etc.) on equipment.

7. Prepare a written report drawing of each individual pipage configuration in the facility. This procedure will allow the designer to explore all requirements necessary for pattern, performance, and maintenance prior to the final layout.

8. Lay out the piping system as shown on the report cartoon. Include instrumentation connections on the pipe configuration. Note that every piping facility has different process, mechanical, and instrumentation requirements. It would be extremely difficult to establish gear up rules and procedures for methods of piping development. Each line on the layout is, in itself, a special pattern problem and must be dealt with accordingly.

9. Add platforms, ladders and cages, pipe guides, anchors, supports, and hangers as required.

x. Include line numbers, codes, specs, specialty detail numbers, and callouts.

11. Identify locating dimensions for piping.

12. Label coordinates for equipment, pipage supports, etc., if required for job.

13. Add together instrument balloons and callouts.

14. Include nozzle schedules and notes every bit required.

fifteen. Complete drawing. Add together match line, area limit, and battery limit callouts, reference details, and section or elevation cutting aeroplane symbols.

16. Impress/plot the completed drawing and check your work.

17. Correct any mistakes you find before releasing the drawing to your instructor or supervisor.

PIPING System Drawing LAYOUT

This section provides a detailed caption of the procedures to lay out the pipage arrangement cartoon shown in Figure 10-ane. These procedures volition simulate those undertaken on any design project past an bodily engineering science company. To simplify the layout procedures and consolidate the reference drawings and related data, a copy of the mechanical flow diagram, foundation drawing, equipment foundation drawings, equipment vendor drawings, and the piping specification tables is provided in this chapter.

The post-obit procedures present both manual and AutoCAD methods for developing piping organization drawings. Note that transmission drawings should be drawn to 3/eight" = 50'-0" scale and CAD drawings are drawn full size and plotted to y8" = l'-0" (.03125") scale.

Procedure 1-3: Drawing setup. Locating area and unit boundaries, championship block, and n pointer

References Drawing: Foundation location programme and company cartoon standards

^Manual. On a "C" size (eighteen" ten 24") sail of tracing vellum, lightly lay out drawing borders measuring 6' inward from the edges of the vellum,

Figure x-1. Piping arrangement cartoon—single line.

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Effigy ten-1. Pipe organisation cartoon—single line.

MATCH UNE Hi 40-CT

MATCH UNE Hullo 40-CT

Figure 10-2. Piping arrangement drawing—double line.

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Figure 10-2. Piping arrangement drawing—double line.

Piping Arrangement Drawings, Sections, and Elevations 147

including tide block if required. Detect the center of the cartoon area past drawing diagonal lines from the opposite corners of the borders. The intersection of the 2 diagonal lines will form the eye of the drawing area. Determine the width and depth of the unit's boundaries by subtracting the smaller friction match line coordinates from the larger match line coordinates for both the north/southward and e/west match lines respectively. Divide the width and depth measurements every bit on each side of the drawing's centerpoint. Lightly layout the unit's lucifer lines with construction lines using the 3/g" = l'-0" scale. These lines volition be widened and darkened at the completion of the project.

AutoCAD. Prepare the UNITS command to Architectural and the 'smallest fraction' setting

_to 'sixteenths'. Fix LIMITS every bit follows: lower left (-5'-0", -v'-0") and upper right (60'-0", 50'-0"). ZOOM, ALL. Set Filigree to l'-O" and SNAP to half-dozen". Resize these valuable cartoon aids as needed throughout the project. Fix the LTSCALE command to 32.

Create the post-obit layers with corresponding colors and line types.

Layer name	Color	Line type
Border	Blue	Continuous
Matchline	White	Phantom
Centerlines	Yellow	Center
Foundations	Cyan	Continuous
Steel	Cyan	Continuous
Equipment	Green	Continuous
Pipe	Yellowish	Continuous
Instruments	Red	Continuous
Text	Light-green	Continuous
Dimensions	Magenta	Continuous

Make 'Matchline' the electric current working layer. Set COLOR and LINETYPE to 'Bylayer'. Figure ten-3 volition be used as a reference to lay out the unit boundary matchlines from the O'-O", O'-O" origin. Using the PLINE command with a line width of 1", depict the unit matchlines.

Process 4: Lay out centerlines for pipe rack and equipment foundations

Reference cartoon: Equipment location programme

Manual. Lay out the pipe rack and equipment foundation centerlines by measuring from the N. O'-O" and W. O'-O" (lower left) corner. Do not measure from the sides of the cartoon borders. If your border is incorrect, your centerlines will be located in the

wrong place. Use a .5mm atomic number 82. This will go on the centerlines thin and night.

AutoCAD. Make 'Centerline' the current working layer. Employ the OFFSET command to describe lines parallel to the northward and west match lines to represent the intersecting coordinates of the pipe rack and equipment centerlines. EXPLODE each new line. Use CHPROP to modify these lines to the 'Centerlines' layer. TRIM or BREAK these lines to create short intersections representing the equipment centerlines.

In one case the equipment centerlines are located your drawing should appear as shown in Figure 10-4.

Process 5: Drawing piping rack and equipment foundations

Reference drawing: Equipment location foundation drawing (see Figure x-5) and foundation drawing for private pieces of equipment (see Figures 10-6 through 10-11).

Manual. Apply the coordinates shown on the equipment foundation drawing and the dimensions provided on the foundation drawing for each private piece of equipment to locate the equipment foundations. Foundations located below mechanical equipment should be drawn with hidden lines. Add together pipe rack and miscellaneous piping back up foundations using dimensions.

AutoCAD. Make 'Foundations' the current working layer. Use the LINE command to draw equipment, pipe rack, and pipe back up foundations from coordinates and dimensions shown on the equipment foundation drawings. Use CHPROP to change the linetype of the foundations located below the mechanical equipment from 'continuous' lines to 'subconscious' lines.

Your drawing should appear as shown in Figure x-5 when Procedure 5 is completed.

Procedure vi: Equipment layout

Reference drawings: Equipment vendor drawings

Utilise dimensions provided on the equipment vendor drawings to lay out the equipment every bit represented in Figure 10-12. The equipment vendor drawings are shown in Figures x-13 through 10-eighteen.

Manual. All mechanical equipment is drawn with nighttime, thin lines. Use a .5mm atomic number 82. Size and location dimensions for ladder and platform details are supplied with vendor drawings V-101 and Five-102.

AutoCAD. Make 'Equipment' the current working layer. Represent all mechanical equipment with the LINE control. Ladder and

Friction match UNE Westward. Jff-CT

HATCH UNE IK O'-CT

MATCH UNE W. Westward-CT

(E-101 DEPR0PAN/2ER KXr-6" REBO/LER

1 V-101 DEPROPANIZER

H.P. FINISHED PAVING Peak lOO'-O"

OVERHEAD

W.xviii--ar CONDENSER

REFLUX ACCUMULATOR

Effigy ten-v. Equipment foundation location drawing.

Continue reading here: Depropanizer Reboiler E101 Foundation

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