Additional requirements related to piping systems. 11 TBL (Federation of Norwegian Engineering Industries). Piping detail (presently L-CR). Kenneth R. Collier, Systems Engineer, Pittsburgh Corning, Presque Isle Drive, Pitts- burgh .. The generic topics are design documents, design bases, piping layout, stress analysis, .. detailed discussion of class rating of piping systems. PIPING SYSTEMS BY BOB WILSON. DOWNLOAD EBOOK: DETAIL ENGINEERING AND LAYOUT OF PIPING. SYSTEMS BY BOB WILSON PDF.
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The Field Engineer is typically responsible to develop a detailed . [PDF] Design Guidelines for Safety in Piping Networks [PPT] Download Design & Construction of Piping Systems . PROCESS PLANT LAYOUT AND PIPING DESIGN by Hunt and Bausbacher: The best book for a piping layout engineer. Piping Engineering Leadership for Process Plant Projects. Read more Design of Piping Systems CMOS. Circuit Design, Layout, and Simulation. Read more. Each participant will receive a copy of the book, Detail Engineering and.
For an engineer, detail engineering plays an important deciding enabler as it provides the background plan necessary for designing and engineering piping assignments. Detailed engineering is applicable across many industrial and process-engineering areas such as utility, chemical, power, pulp and paper. A piping designer must be familiar with the equipment, instrumentation and related disciplines in addition to the many facets of piping design.
Piping Detailed Engineering: Then and Now Before the advent of 3D and CAD, piping detailed engineering was carried in an ad-hoc manner based on random considerations without any formulae or code reinforcement. However, with the evolution in engineering training and the technology, piping detail engineering has evolved the way piping structures are designed and implemented today. Piping detail engineering is a very complex and time-consuming task and with the technology evolution, today such tasks become simple and more accurate.
Detail piping engineering: What does it involve? Detail piping engineering involves an engineering report for the use of various types of pipes and pumps with pressure drop calculations. It also includes pipes and pumps specifications, equipment selection and size, instrumentation and process control, and other piping components such as valves, fittings, piping hangers and supports.
Detailed engineering: Who it involves? Engineers, designers, draftsman and CAD operators in the piping engineering and design industry often have knowledge about detailed engineering.
Practical engineers have superficial knowledge of detail engineering too. Reference FIG.
The weld metal tested was the minimum as required by Para. The pad was made from excess run pipe. The pad OD selected for this intersection is Mill tol. The weight effects to be considered shall be the greater of operating or hydro- test loads. SP assistance would be in the selection of a clamp material for example in F C service.
Pipe Supporting - Span Pipe Support Span, based on deflection Pipe support span is a decision that faces the designer in most pipe supporting jobs. As a guide to the selection of support spacing, the following equation based on permissible mid span deflection is offered. The permissible mid-span deflection, y, concept is one technique commonly selected for support spacing.
This technique is based on a specified mid- span, y deflection of the supported pipe considering the pipe, contents, and insulation weights. Pipe Supporting - Span Pipe Support Span, based on stress As a guide to the selection of support spacing, the following equation based on permissible stress is offered.
This technique is based on stress of supported pipe material considering the pipe, contents, and insulation weights.
The specifications limit the mid-span deflection to 0. Solution: Determine the uniform load, pounds per foot. Pipe Supporting - Drainage Drainage Piping systems should be installed to drain by gravity, in direction of normal flow.
Each span must be pitched so that the outlet will be lower than the maximum sag of the pipe. The pitch of pipe spans is the ratio between the drop in elevation and the length of span. It is called the average gradient and is expressed in inches per foot or mm per meter run. High temperature, high pressure pipes are critical to a point that early in the basic design phase supports locations and loads have to be decided upon.
Concentrated hanger loads on structures, buildings and their effect on equipment have to be well known from the very beginning of the project. Recognizing that each new piping design presents an abundance of new problems to the engineer, no attempt is made to state fixed rules and limits which would be applicable to every hanger design, only guidance to ideas to solve simple practical support problems.
Expansion joint design shall conform to the requirements of Appendix X, which provides guidelines for the design, fabrication and installation of bellow type expansion joints. Spring supports should be provided with position indicators. The material should be of good quality and all requirements of the Code for welding, preheating and post-weld heat treatment should apply.
Reinforcement by pad and complete encirclement reinforcement shall be used to distribute stresses and reduce heat effect in alloy piping.
For vertical pipe weight support, the clamp should be located below a flange or fitting or a welded lug. It should be noted that horizontal movement of the hanger will result in a vertical movement as shown previous slide. The subsequent horizontal forces should be checked.
This load margin should be greater than the weight of the hanger hardware that is supported by the spring, ex. Clamps and hanger rods used to connect the piping to the spring.
The Fundamentals of Piping Design
If the total piping loads plus the load of the supported hanger hardware cannot be accommodated within the spring hangers operating range an alternate spring hanger design should be considered. In such cases a constant load hanger would be selected.
Therefore they are used for the support of critical piping systems.
H-1, page Piping systems, are divided into the three main temperature categories in order to provide a basis for the selection of hangers, anchors, or supports. Hot systems a. The temperature range is from F 50C to F C. Typical examples are low-pressure steam, hot water and certain process piping.
The temperature range is from F C to F C. Typical examples are boiler plant and industrial steam and hot- water piping systems.
The temperature ranges from F C and higher. A typical example is a high-pressure steam power-plant piping system d. In the temperature range F and higher, there is the possibility of metallurgical change if unalloyed carbon steel is used.
It is suggested that hangers, anchors, and supports for piping which operates at above F be of materials at least equal to those of the piping system itself. Selection of Pipe supporting Devices 2. Ambient systems in which the contents of the pipe are not heated or cooled by mechanical means.
Temperatures would range up to F. Plant air and service water would be typical systems 3. Cold systems a.
The temperatures range upward from 32 F. A typical example would be chilled water piping b. The temperature ranges downward from 32 to minus 20F, as in brine systems c. Below minus 20 F, as in cryogenic systems Selection of Pipe supporting Devices. Selection of Pipe supporting Devices Pipe Attachments. Hangers for the various systems described above may be selected from fig. Rollers should be types 41 through 47 with appropriate saddles of Type 39, items 1 and 2.
Supports would be Types 35 through For Type 1b systems, hangers Types 1, 3, 4 and 8 are used. For Type 1c systems, alloy hangers are used as required by the line temperature. Hangers should be of Types 2, 3, or 8 with saddles of Type 39, items 1 or 2, and the rollers of Types 41 through 47 Selection of Pipe supporting Devices For Type 2 systems, hangers can be of Types 1 and 3 through 12 with supports of Types 24, 26, and 35 through 38 For Type 3 systems, the hanger of support must be outside the insulation and the vapor barrier must be left undisturbed.
A Type 40 insulation protection shield must be used to distribute the loading on the insulation. Hangers sized for the outside diameter of the insulation can be of Type 1, 4, 6, 7, 9, 10, or For the Type 3c systems, special consideration must be given to the type and nature of the piping and its layout. Consideration may be given to the use of the welded lug attachments. Where used on Types 1c and 3c, the welded attachment must be of an alloy material which is compatible with the material of the piping system itself.
Such conditions can be avoided by use of commercially available spring supports. Systems that respond to exciting vibrations can be controlled satisfactorily by the use of dampening device.
There are two general types to consider; the coiled spring and the hydraulic vibration dampener. These types should be arranged so that the springs are in the neutral position during normal operating conditions of the system. Resistance to movement increases with the speed of displacement. One distinct advantage of the hydraulic device is that there is a min. Rolled threads to the same standard may be used.
It must be pointed out that the length of a rolled thread cannot be increased by running a die over it, since the basic diameter of the rod is less than the size of the threaded portion. Selection of Pipe supporting Devices.
Detailed Engineering of Piping Systems
Specific examples are the need for properly located anchors in a steam distribution system to prevent overloading of the smaller branches, anchors and guides, to actuate and align expansion joints and loops properly, and restraints of fixed points in the vicinity of compressor equipment or quick-closing control valves.
Long straight runs or sections of piping that are obviously weak in some plane may require additional guiding or bracing to provide lateral structure stability.
For sections where the movement does not permit the use of rigid struts, guides with sufficient clearance to accommodate the normal movement may suffice by limiting the displacement.On this basis, the steam consumption of the tracer line may be taken as a running load being equal to the radiation loss from the product lines.
I Approve. It also involves process and utility equipment management. This product has been shared. Sc and Sh values are found in B The weight of the bucket keeps the valve off its seat.
Check valves are important safety devices in piping. When steam enters the underside of the bucket it gives buoyancy and the trap rises.