10,427 research outputs found

    UK Rules For Unfired Pressure Vessels

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    The present code PD 5500, formerly BS 5500 [1] evolved partly from the well-known BS 1500 [2] in the 1950's and BS 1515 [3] first published in 1965; the latter permitted higher level allowable stresses and more advanced rules. In 1969, following a report from the Committee of Enquiry into the Pressure Vessel Industry, the British Standards Institution brought all the pressure vessel interests together under one general committee in order to rationalise the activity. This became PVE/ and presides over a large committee structure. There are a series of functional sub-committees who deal with specific aspects and a large number of technical committees as well as many additional sub committees and working groups. Most of these meet regularly. The technical committee PVE/1, Pressure Vessels, has overall responsibility for BS 5500. The functional committee PVE/1/15 Design Methods has an overall responsibility relating to 'Design' with particular reference to the design section of BS 5500 (Section 3). The first edition of BS 5500 was issued in 1976. The actual issue was delayed for some time because, in the early 1970's, there was an attempt in Europe to produce an international pressure vessel standard. A draft of the international standard appeared as ISO DIS 2694 [4] in 1973 but it was not generally accepted and the attempt was abandoned in the mid 70's. It was decided to use some of the material from 2694 within BS 5500 so that although the Standard was long delayed it benefited to some extent from the international efforts. Initially, committee PVE/l set out the concept of a "master" pressure vessel standard which could readily be applied to any vessel in either ferrous or non-ferrous materials and for highly specialised application with the minimum of supplementary requirements. The layout of BS 5500 is consistent with this concept and although the Standard has perhaps not fulfilled this high ideal, it has certainly been employed widely in many industries including non pressure vessel type applications. When issued it had a number of distinctive features compared with other pressure codes viz; weld joint factors were removed, the present three categories of construction were introduced, there was a new novel external pressure section, it has a loose leaf format and an annual updating was introduced. Further editions of BS 5500 have been issued every three years since 1982

    Consumer Engagement

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    Medicare and P4P

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    Population Health: Where\u27s the Beef?

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    The crossroads and beyond

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    From the Editor: Can Case Management Help?

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    No abstract available

    Medicare\u27s Roadmap

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    Editorial Article

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    FMEA of gasketed and non-gasketed bolted flanged pipe joints

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    Limited work is available in the literature on the Failure Mode and Effects Analysis of bolted flanged pipe joints. From previous comparative reliability studies of both gasketed and non-gasketed bolted flanged pipe joints, generally it is found that both the joints types are of high integrity and perform well in excellent service under appropriate installation and maintenance conditions. However, based on certain factors better functional safety for non-gasketed joints can be achieved. All studies have been performed based on operational information and reported observations. This study reported herein presents a detailed failure mode and effects analysis (FMEA) in the light of industrial surveys, analysis, experimental work and subsequent observations in addition to previous studies. The aim of the study is to increase the reliability knowledge of the gasketed and non-gasketed flanged pipe joints and thereby to increase the basis for finding the optimal pipe connection based on surveys, observation and experimental studies performed
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