Global Nuclear Safety
National Research Nuclear University "MEPhI"
online version: ISSN 2499-9733
print version: ISSN 2305-414Х
2014-4(13)
Design, manufacturing and commissioning of nuclear industry equipment
| Article Name | Analysis of the Reasons of Jamming and Rods Breaking of Pipeline Motorized Fittings |
|---|---|
| Authors | I.S. Podrezova, L.V. Shutova, Yu.E. Ulyanova, O.Yu. Pugacheva, Yu.N. Elzhov |
| Address | Volgodonsk Engineering Technical Institute the Branch of National Research Nuclear University «MEPhI», |
| Abstract | The analysis of the reasons of jamming and rods breaking of pipeline motorized fittings, which can lead to valves refusals operated as a part of responsible technological systems of the nuclear branch enterprises is presented in article. The clutch failure to function of the torque restriction and fatigue cracks in the valve attachment is the additional factor promoting collapse of a rod. Planning of actions for an exception of breaking and rods jamming assumes prevention of thermopressure testing, the organization of bypass, clutches control of torque restriction, the organization of works on control of a drive gear of fittings by means of the specialized stand of lock fastening. During fittings operation of the fittings it is expedient to collect statistical information about the failures and defects of the fittings for determining of its reliability, maintainability and restorability to develop and justify priorities in the planning and carrying out actions to improve the reliability of the fittings. |
| Keywords | main fitting refusal, rod jamming, rod breaking, thermopressure, fatigue cracks, repair valves, installation of the bypass line (bypass), unloading, setting a torque limiting clutch, function check |
| Language | Russian |
| References | [1] Kakuzin V.B., Filippov N.G. Problemy nastrojki jelektroprivodov zadvizhek [Problems of electric drives of latch setup]. AS [AS]. 2008, №4(55). Available at: http://www.valve-industry.ru/pdf_site/55/55_vopr_opit_problems_kakusin.pdf (in Russian) [2] MT1.2.3.02.999.0085-2010 «Diagnostirovanie truboprovodnoj jelektroprovodnoj armatury. Metodika» [MT1.2.3.02.999.0085-2010 "Diagnosing of pipeline electrowire fittings. Technique"]. 2010. (in Russian) [3] RD JeO 1.1.2.01.769-2008. Organizacija remonta oborudovanija atomnyh stancij po tehnicheskomu sostojaniju. Osnovnye polozhenija [RD EO 1.1.2.01.769-2008. Organization of repair the of nuclear power plant equipment for technical condition. Basic provisions]. 2008. (in Russian) [4] JeMTD 66-069-2014. Metodicheskie rekomendacii «Opredelenie i obespechenie rabotosposobnogo tehnicheskogo sostojanija jelektroprivodnoj armatury. Tehnicheskie predlozhenija po modernizacii i zamene ustarevshih jelektroprivodov [EMTD 66-069-2014. Methodical recommendations "Definition and providing operating technical condition of electrodriving fittings. Technical offers on modernization and replacement of outdated electric drives]. 2014. (in Russian) |
| Papers | 32 - 37 |
| URL Article | URL Article |
| Open Article |