The National Shipbuilding Research Program. 1985 Ship Production Symposium. Volume 1, Paper Number 19: Making the Right Connection - Piping Systems, Past, Present, and Future

The National Shipbuilding Research Program. 1985 Ship Production Symposium. Volume 1, Paper Number 19: Making the Right Connection - Piping Systems, Past, Present, and Future

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Published: 1985

Total Pages: 21

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A fundamental concern of members of the shipbuilding community is the escalating cost of repairing and fabricating piping systems. These shipbuilders are searching for ways to reduce installation costs and to improve the quality and timeliness of shipyard output. The primary cost in attaching segments of a piping system is directly related to installation man-hours for welding or brazing, flushing, hydro-static testing, quality assurance and potential rework. The more labor intensive the piping installation, the greater the need for an alternative method. New technologies have provided more cost effective methods for permanently joining piping. One viable alternative is the Swage Marine Fitting. Swage Marine Fittings (SMF) are mechanically applied connections that significantly reduce installation man-hours by eliminating hot-work and conventional N.D.T. This paper will discuss the history of welding and brazing, the development of mechanically applied pipe connections and the potential impact that this technology will have on the future of piping fabrication and repair.


The National Shipbuilding Research Program. 1997 Ship Production Symposium, Paper Number 11: Design, Fabrication, Installation, and Operation of Titanium Seawater Piping Systems

The National Shipbuilding Research Program. 1997 Ship Production Symposium, Paper Number 11: Design, Fabrication, Installation, and Operation of Titanium Seawater Piping Systems

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Published: 1997

Total Pages: 21

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For many years, the U.S. Navy fleet has experienced severe corrosion and erosion problems in copper nickel seawater piping systems. Since titanium is extremely resistant to corrosion and erosion, it has been viewed as a potential solution to these problems. However, certain concerns regarding shipboard use of titanium needed to be addressed: marine fouling, galvanic action with other metals, welding, system fabrication in a normal shipyard environment, testing, and life cycle costs. Over a three year period, Ingalls Shipbuilding division of Litton Industries and the Naval Surface Warfare Center, White Oak, worked with various commercial equipment suppliers to address these concerns. Partially because of the success of this project, it was decided to retrofit titanium systems aboard TARAWA Class LHAs and to specify same for the new LPD 17 Class ships.


The National Shipbuilding Research Program. Proceedings of the IREAPS Technical Symposium. Paper No. 16: Computervision Interface to Batch Electric Boat Piping Programs

The National Shipbuilding Research Program. Proceedings of the IREAPS Technical Symposium. Paper No. 16: Computervision Interface to Batch Electric Boat Piping Programs

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Published: 1982

Total Pages: 22

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The computerized programs for piping system evolution: 1. provided pipe bending data for length, bend angles, roll engles and distance between bends, 2. added fitting, valve, and hanger locations to both bent and straight pipe by match marking and creating pipe details, 3. combined details into assemblies, 4. generated isometric and orthographic drawings, 5. added welding identification and data, 6. extracted and added material information, 7. expanded to include work authorizations, trade work instructions, feed relationships, test boundaries, and serialization, and 8. generated tapes for data transfer to work authorization files and reports for manufacturing and installation.


The National Shipbuilding Research Program. 1995 Ship Production Symposium. Paper No. 20: The Product Model as a Central Information Source in a Shipbuilding Environment

The National Shipbuilding Research Program. 1995 Ship Production Symposium. Paper No. 20: The Product Model as a Central Information Source in a Shipbuilding Environment

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Published: 1995

Total Pages: 14

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In a shipbuilding CAD/CAM system a product model is successively built up during the design process, with geometric as well as non-geometric information. In parallel with the design process, the model is further extended with work preparation (in some countries called production engineering) information e.g. definition of building strategy and definition of the assembly structure. Information needed for part fabrication can be derived from the model, such as drawings, parts lists and information for numerically controlled (NC) equipment. When work preparation definitions are combined with a product model, the information needed for assembly parts lists, assembly drawings, etc. can be derived from the product model instead of being created manually. Use of the product model concept, systems based upon it and procedures implementing it in an organization will allow a reduction of costs and an increase in productivity and competitiveness.


The National Shipbuilding Research Program. 1989 Ship Production Symposium, Paper No. AP: Design Through Manufacture: A Computer Aided Advisor for the Manufacture of Submarine Hulls

The National Shipbuilding Research Program. 1989 Ship Production Symposium, Paper No. AP: Design Through Manufacture: A Computer Aided Advisor for the Manufacture of Submarine Hulls

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Published: 1989

Total Pages: 14

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A computer graphics based advisory system has been developed to aid in the design and manufacture of submarine hulls. The design and manufacture advisor incorporates models of the materials (steel) and processes (bump forming roll bending. welding and fixturing) used for the manufacture of the hulls and allows the user to explore the effect of different material qualities (described in terms of variances of thickness and yield strength) and different manufacturing parameters (punch penetration punch spacing and number of fixtures for example) on the resulting quality (circuliuity) of the hull section. By Designing through Manufacture in this way the resulting design of the submarine hull section is not just a geometric representation of the desired shape of the hull but incorporates explicit information about the materials and processes used to create the shape and of the quality that results from the designer!5 choice of materials and processes.


The National Shipbuilding Research Program. Proceedings of the REAPS Technical Symposium. Paper No. 22: Design for Production (The National Shipbuilding Research Program).

The National Shipbuilding Research Program. Proceedings of the REAPS Technical Symposium. Paper No. 22: Design for Production (The National Shipbuilding Research Program).

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Published: 1979

Total Pages: 27

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Proceedings of the REAPS Technical Symposium. Paper No. 22: Design for Production. The traditional role of the Ship Designer is the preparation of an overall design of vessel which will have a performance satisfying the owner's Statement of Requirements. The concept of Design for Production, however, requires that, in satisfying the Statement of Requirement, the Ship Designer should also give attention to ease of production. This suggests, therefore, two aspects of the overall design, namely: design for performance design for production and there are others, not considered here, such as design for repair and maintenance, and ergonomic design. Clearly, there will be areas of inter-action and the role of the Ship Designer could be seen in this context as one of arbiter, having the ultimate responsibility of deciding whether performance or production considerations should take precedence in any particular case or the nature of the compromise to be reached. Many of the procedures necessary involve consideration of every feature of the ship from the overall viewpoint. Any tendency to divide design into the traditional elements of steelwork, outfit, engineering and piping would provide a totally inadequate basis upon which to base effective Design for Production.


The National Shipbuilding Research Program, 1992 Ship Production Symposium Proceedings, Paper No. 2B-2: The Effective Use of CAD in Shipyards

The National Shipbuilding Research Program, 1992 Ship Production Symposium Proceedings, Paper No. 2B-2: The Effective Use of CAD in Shipyards

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Published: 1992

Total Pages: 15

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In the current severely competitive climate that is challenging shipbuilders everywhere, how information is managed is taking on extraordinary importance. Existing computer aided design (CAD) systems have not been focused on the most critical information needs, for example, information to serve marketing. This limitation is the result of concentrating primarily on aspects of design and manufacturing without regard for impact on an overall manufacturing system. In this paper the need to extend CAD systems is identified so that they would more fully provide critical-data to everyone who has to have understanding of a manufacturing system's capability and availability.


The National Shipbuilding Research Program. Proceedings of the REAPS Technical Symposium. Paper No. 2: The AUTOFIT CAD/CAM System for Piping Engineering: Operational Experience and Development Status

The National Shipbuilding Research Program. Proceedings of the REAPS Technical Symposium. Paper No. 2: The AUTOFIT CAD/CAM System for Piping Engineering: Operational Experience and Development Status

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Published: 1981

Total Pages: 15

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AUTOFIT is built up around a main database that includes all information necessary for piping design and detail engineering. The system is also prepared to interface other tasks and functions as: analyses, planning, shop automation ion and including other engineering disc disciplines (steel structuring material control purchasing, quality control). AUTOFIT meets the modern needs for communication through a flexible command processor. Here the user can choose his own user interface such as language, screen configuration, several ways of giving input, or degree of interaction.


Ship Production

Ship Production

Author: Richard Lee Storch

Publisher: Cornell Maritime Press/Tidewater Publishers

Published: 1995

Total Pages: 0

ISBN-13: 9780870334610

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Revised and updated (1st ed., 1988) to reflect current information and practice in the shipbuilding industry, this text/reference describes the principles and practice of ship production employing group technology. The system described is a mix of old and new techniques, aimed at optimizing producti