Blast resistance and progressive collapse progressive collapse resistant design mitigates disproportionately large failures following the loss of one or more structural elements. Blast resistant buildings and modules mobile modular. Where gas explosions represent a credible risk, platform topsides have to be designed to withstand explosion loading. Structural response of blast wall to gas explosion on semi. The ultimate reference for selecting, operating and maintaining offshore structures, this book provides a road map for designing structures which will stand up even in the harshest environments. Substantial research has been performed to develop a code of practice for design of such structures.
Fabig technical note 8 protection of piping systems against fires and explosions 6. Fabig technical note 4 where gas explosions represent a credible risk, platform topsides have to be designed to withstand explosion loading. Proceedings of the 25th international conference on offshore mechanics and arctic engineering. The main objective of the project was to derive static design pressures for sizing main structures and barriers. It describes the required loading, load combinations, strength and stability checks for structural elements. In the present probabilistic methods of offshore explosion analyses, however, overpressure and durationor impulse are usually not treated as a combined term because of the missing probabilistic relation ignored when design explosion load are determined with given s criteria. This paper presents a comprehensive overview of the effects of explosion on structures. Blast and explosion resistant design of nuclear facilities. With floor space at a premium on an offshore platform, where can you put a huge hvac system. Dnvglosc101 design of offshore steel structures, general. An influence of gas explosions on dynamic responses of a. Douglas faulkner symposium on reliability and ultimate strength of marine structures. The duration of the triangularshaped blast design pressure curve with a completely positive side is usually determined by the absolute area of each measured transient.
A predictive model for damage assessment and deformation in. Structural analysis and design books civil engineering. Calculation of blast loads for application to structural. The fire and blast information group fabig is a notforprofit, membership based organization created in the uk in 1992 in the wake of the piper alpha disaster to continue the sharing and dissemination of expert knowledge on fires and explosions arising from the major research projects carried out in the early 1990s fabig has become an internationally recognized body for the development. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. Blast safety of the building envelope whole building design.
Explosion design accidental load dal blast on offshore platforms 1. Design guide 26, design of blast resistant structures, provides guidance for the design of blast resistant structures and progressive collapse mitigation. Indirect design means use of energy absorption capacity. Design of offshore facilities to resist gas and explosion hazard 5. Design of blast resistance structures linkedin slideshare. Design accidental load for explosion resistant design. New generation of blast walls for offshore t increasing scarcity of fossil he fuels forces oil companies to also exploit unusually difficult offshore sites, requiring new and innovative drilling techniques. Architectural aspect of blast resistant building design. Blast resistant modular buildings ensure protection that your team can count on with our blast resistant buildings ready to be delivered at your plant, refinery, or project site. Pdf new guidance on the design of offshore structures to.
First, the driving force behind corrosion is examined, introducing the basic mechanics that fuel this phenomenon. Oct 19, 2014 where gas explosions represent a credible risk, platform topsides have to be designed to withstand explosion loading. This assures you that our buildings meet or exceed in the protection of your most valuable assets. Blastresistant design of steel buildings part 2 youtube. Structural dynamic response for fe model of blast wall was analyzed. A primer for architects, design professionals, and their clients, november 2001. The design principles and overall requirements are defined in this standard. Here you can explore structural analysis and design books collection from our virtual library. Antiterrorism blast design for building engineers january 2017 doug heinze, pe, leed ap introduction to blast resistant engineering blast resistant facades blast resistant structures strategies for incorporating blast requirements into building design. Civilax on explosion resistant design of offshore structures civilax on modern prestressed concrete. Blastresistant hardening, or the structural strengthening of buildings, is one measure an owner may employ to minimize the risk to people and equipment from the hazards of accidental or intentional explosions. Bp, 2001, the adequacy of the representation of the full range of potential release scenarios on an installation is becoming increasingly important. Blast design requirements for building systems duration. Keep blast design goals in context establish a secure perimeter.
Prevention, control and mitigation of explosions on floating installations. Progressive collapse resistant design is systemfocused, and is often divided into two approaches, direct and indirect. The analysis and design of structures subjected to blast loads require a detailed understanding of blast phenomena and the dynamic response of various structural elements. Nolan, in handbook of fire and explosion protection engineering principles third edition, 2014 16. Preventing fatalities, injuries and financial loss is the aim of this design condition. Nov 26, 2015 explosion risk analysis era is widely used to derive the dimensioning of accidental loads for design purposes. Computational fluid dynamics cfd simulations contribute a key part of an era and predict possible blast consequences in a hazardous area. Department of defense ufc 334002 structures to resist the effects of accidental explosions replacing u. Explosion induced dynamic responses of blast wall on fpso. Performance based design of blast resistant offshore.
To effectively meet these requirements, a proper understanding. Determination of the design load for structural safety. Response spectra for explosion resistant design and assessment. This book examines the fire resistant design of fixed offshore platforms. Rr489 structural strengthening of offshore topsides. Blastresistant design of steel buildings part 2 aisc education. Design of blastresistant buildings in petrochemical.
The theoretical foundations for designing blastresistive structures and blast walls can be found in 2, 3. Corrosion protection systems in offshore structures. Design principles and construction methods civilax on steel structures. Offshore gas platforms may be subjected to severe gas explosion loads. However, no guidelines are provided in en 199117 for the calculation of external blast induced loads. Blastresistant design of steel buildings part 1 duration. Generally four categories of blasts are possible, namely, air blast, surface. The strategy for dealing with the blastinduced threats against a structure requires attention from planning and design stages, as introducing or altering various blast response mitigation strategies becomes either difficult or impossible later on. Although considerable effort has been devoted to develop blast resistant design methods for offshore structures, there remain several issues that require further investigation. Ufc 334002 structures to resist the effects of accidental explosions, with change 2. Fabig technical note 4 details where gas explosions represent a credible risk, platform topsides have to be designed to withstand explosion loading.
Introduction to the analysis and design of offshore. Explosion resistant design of offshore structures ebook. Pre cast flooring is to be avoided in case of blast resistant structures 10. Featured products office space, lunch rooms, lavatories and tool cribs built to 8 psi blasts mean your job site will have all required amenities safely nearby. Explosion pressures can vary based on the model geometry, the explosion intensity, and explosion scenarios. Blast walls are important structures installed in offshore platform topsides to protect personnel and.
Ukooahse fire and explosion guidance 21, or api2fb 2. Handbookfor blastresistant designofbuildings handbook for blastresistant design of buildings edited by donald 0. The demand for blast resistant structures, driven by facilities life safety requirements, has forced plant managers to seek out more timely and cost efficient forms of construction. Improving blast resistance with building cladding solutions. Blast response mitigation strategies can be incorporated in the structural design at concept stage, leading to a welldesigned and constructed structure that can exhibit improved blast resistance and at the same time maintain its architecturally appealing appearance. Aci 370r14 report for the design of concrete structures. A recent fabig technical meeting sci, 2001 has highlighted a number of issues for floating installations which represent a challenge to existing design practices. The event control is to reduce the probability and the consequences of explosions. I am submitting herewith a thesis written by sarah beth janney entitled blast resistant design of steel structures. In the case of an explosion produced by an air or a surface burst, the structure is loaded by means of a compression wave shock wave over some area. Unique single reference supports functional and costefficient designs of blast resistant buildings now theres a single reference to which architects, designers, and engineers can turn for guidance on all the key elements of the design of blast resistant buildings that satisfy the new asce standard for blast protection of buildings as well as other asce, aci, and aisc codes. Offshore oil and gas process plants are exposed to hazardous accidents such as explosion and fire, so that the structural components should resist such. Offshore oil and gas process plants are exposed to hazardous accidents such as explosion and fire, so that the structural components should resist such accidental loads. Blast load overpressure blast load structure impact secondary fragments he wall primary fragments m ost government and military structures in the united states are required to consider blast demands and structural integrity as part of the design process.
They must be prevented from falling off their supports. Design load measures for vapor cloud explosion on complex. Design load measures for vapor cloud explosion on complex systems. The rapid expansion of this gas results in the generation of shock waves.
I have examined the final electronic copy of this thesis for form and content and recommend that it be accepted in partial fulfillment of the requirements for the degree of master of science, with a major in civil engineering. Resistance of structures to explosion effects deliverable d1 resistance of structures to explosion effects. Fire will always be a major threat to the offshore structure as oil and gas always passes through the installation. As the demand for blast resistant buildings continues to grow, readers can turn to the handbook for blast resistant design of buildings, a unique single source of information, to support competent. Blast is a wave of highly compressed air spreading outwards from an explosion. Special attention is given to some principles of topside design. Sep 25, 2017 mortazavi, maryam, heo, yeongae, and li, yue. Offshore structure an overview sciencedirect topics. The current philosophy in the design against explosion is 1 event control, 2 indirect design and 3 direct design. The manual structures to resist the effects of accidental explosions, army tm. Response spectra for explosion resistant design and. Design against explosion loads in offshore structures. Blast loading and blast effects on structures an overview.
Structural analysis and design books welcome to the civilax virtual library, the most comprehensive online civil engineering resource collection in the world. Blast resistant preengineered metal buildings are a good option as they can be more efficient and economic than other blast resistant structures. How cathodic protection influences initiation and progress of cf is an important question, especially in the case of highstrength materials sensitive to hydrogen embrittlement. Explosion resistant design of offshore structures where gas explosions represent a credible risk, platform topsides have to be designed to withstand explosion loading. Examples of such methods include the use of blowout panels and window system designs that provide protection from blast pressure applied to the outside, but that readily fail and vent if exposed. This report provides general guidelines for the structural design of blast resistant petrochemical facilities, updating the 1997 original edition. Blast walls are sacrificial barriers to protect offshore structures when subjected to hydrocarbon explosions.
The world leader in blast resistant design, baker risk, has worked closely with our engineers to exceed the industry standards for blast resistant structures. S department of army, navy and air force technical manual. Pdf presents a passive design procedure, which has been used on the. Blast resistant building seminar report, ppt, pdf for. Offshore structures, ships, chemical plants, underground structures, etc. Topside structures of offshore installations have to support heavy process plant dealing with large volumes of oil and gas under high pressure. Chapter 11 design of blast resistant ancillary openings, p. Some of the most frequently used design guides and criteria include.
Figure 1 shows the idealised profile of the pressure in relation to time for the case of a free air blast wave, which reaches a point at a certain distance from the detonation. Blastresistant design of steel buildings part 1 youtube. Pdf safety of offshore structures to explosion loads researchgate. Design of blast resistant buildings in petrochemical facilities ref. Our inpac units offer several configuration options allowing them to adapt to each platforms unique needs. Livermore software technology corporation lstclsdyna keyword users manual. The design of concrete structures for blast resistance. The manual was developed for us military organisations for the purposes of. Blast response mitigation strategies can be incorporated in the structural design at concept stage, leading to a welldesigned and constructed structure that can exhibit improved blast resistance. Blast analysis of offshore topside structures tu delft. The design of a corrosion protection system for offshore structures is discussed in order to illustrate how these techniques can be utilized even in the most extreme environments. Introduction the accidental explosion is a design condition which must be considered for offshore oil and gas facilities. A novel offshore platform blast wall design with energy absorption.
Explosion proof design class 1 div 2 ieee 45 marine duty motors h 2 s and combustible gas alarms. When considering mitigation measures for cbr hazards, the hvac systems are of particular concern. Significance of soil compaction on blast resistant behavior of underground structures. A case study demonstrates the application of the method. The target of blast resistant building design philosophy is minimizing the consequences to the structure and its inhabitants in the event of an explosion. Design and analysis of hpfrcc blast resistant structures. The blast wave contains a large part of the energy that was released during detonation and moves faster than the speed of sound.
The main aim of performance based design for blast resistant offshore. Army corps of engineers, tm 50, structures to resist accidental explosions, november 19, 1990. Offshore structure design, construction and maintenance covers all types of offshore structures and platforms employed worldwide. Offshore engineering and technology day1am 3 history and current state of the art of offshore structures definition of offshore structures no fixed access to dry land may be required to stay in position in all weather conditions functions of offshore structures exploratory drilling structures. An introduction on offshore engineering and technology. The philosophy of performance based design of blast resistant offshore systems is an approach by which structural components are allowed to behave in a controlled nonlinear characteristic that satisfies the demand criteria for preventing loss of lives, asset protection and integrity of escape routes. Some design strategies are also recommended aiming to ensure increased robustness in building structures that are to endure localized failure. The importance of the possible existence of socalled freak waves regarding structural design is discussed.
Design of blast resistant structures slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Blast attacks by terrorists, and domestic accidents like lpg gas cylinder bursts have become a concern due to their increased frequency and fatal effect on lives and. Aci 370r14 report for the design of concrete structures for blast effects. Resistant material an overview sciencedirect topics. Blast resistant design guide for reinforced concrete structures, eb090 this guide, which includes a foreword by dr. Brt structures blast resistant structures edmonton, ab. Gene corley, provides structural engineers with a practical treatment of the design of castinplace reinforced concrete structures to resist the effects of blast loads. Distributed by mobile modular, dropbox blast resistant modules brms are our latest product offering, with the approved levels of safety your staff needs in. Design wind speed and pressures the basic wind speed is reduced or enchanced for design of buildings and structures due to following factors. Design guide 26 is available as a pdf download for free to aisc members, or can be purchased as a pdf.
In july 20, aisc released a new design guide for the design of blast resistant structures. Proceedings of the asme 2017 36th international conference on ocean, offshore and arctic engineering. It also explains the design of tubular joints, fatigue analysis, dynamic analysis, and impact analysis, fire resistance, fire, explosion and blast effect analysis. Blastresistant design of structures practice periodical.
An explanation of the nature of explosions and the mechanism of blast waves in free air is given. Explosions and blasts can produce, in a very short time, an overload much greater than the design load of a building. Many architects are finding it necessary to include blastresistant products in new and existing construction. If you continue browsing the site, you agree to the use of cookies on this website. A primary requirement is the prevention of catastrophic failure of the entire structure or large portions of it. Prepared by the task committee on blast resistant design of the petrochemical committee of the energy division of asce. Structural solutions for blast resistant buildings. Blast resistant design of steel structures tennessee research.
Blast and explosion resistant design of nuclear facilities authors. Review report of testing methods report eur 26449 en the research leading to these results has received funding from the european union as part of the european reference network for critical infrastructure protection project. Reference is made to a number of publications in which further detail and extension of treatment can be explored by the interested reader, as needed. Since a portion of the blast energy is coupled into the ground, the structure is also subject to ground motions similar to. This part instructs on structural,buildingenvelope,componentspace,siteperimeter,andbuildingsystem designs. Part 4, blast resistant detailing, addresses the use of concrete, steel, and masonry in new designs as well as retrofitting existing structures. The primary objectives are to establish design procedures and construction techniques whereby propagation of explosion from one structure or part of a structure to another or mass detonation can be prevented and to provide protection.
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