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Simex VSE 40 in Siberia - application: bedding

Автор: Simex Engineering Srl

Загружено: 2017-04-24

Просмотров: 5395

Описание:

---ENG
A Simex VSE 40 screening bucket is delivering successful results in Siberia on the “Power of Siberia” gas pipeline, which will transport Russian gas into China. “Power of Siberia” is the natural gas pipeline constructed and managed by Gazprom.

One of the most delicate phases of operations for Power of Siberia's construction is the welding and the laying of the pipe (1420 mm diameter), which cannot be set directly on the bottom of the trench, but instead on a 30-cm bed of screened material containing aggregates no bigger than 0-28 mm. This “soft” layer, called “bedding” in the petroleum industry, must guarantee that the pipe be perfectly level and prevent that the sections of pipe are not damaged by aggregates having a pointed shape or extreme size.

The bedding has a fundamental role in the preservation of the pipeline over the long-term, which in the case of the Power of Siberia must have a 20-year operating cycle before undergoing extraordinary maintenance.

The screening bucket, the first of its kind bought by Stroigasmontage, is having excellent results both for the quality of the material and the production volumes, with the bedding process progressing smoothly since it is mounted on an excavator. The attachment has also proven extremely reliable despite the fact that work carries on continuously and that weather conditions are harsh: last January and February average temperatures were -30°C (-22°F), even hitting -47°C (-52°F), and in any case never rising above -25°C (-13°F).


---ITA
Una benna vagliatrice Simex VSE 40 sta operando con successo in un cantiere di “Power of Siberia”, il metanodotto realizzato e gestito da Gazprom che porterà il gas russo in Cina.

Una delle fasi più delicate delle varie operazioni necessarie per la costruzione del metanodotto è senz'altro rappresentata dalla saldatura e dalla posa del tubo (diametro di 1420 mm), che non può essere appoggiato direttamente sul fondo della trincea, ma su uno strato con spessore di 30 cm di materiale vagliato realizzato con inerti di pezzatura non superiore a 0-28mm.

Il letto di posa (chiamato “bedding” nell'industria petrolifera) svolge dunque un ruolo fondamentale per la buona conservazione della condotta nel tempo.

La benna vagliatrice Simex VSE 40 sta dando ottimi risultati, sia in termini di qualità del materiale, che di volumi produzione, consentendo di seguire agilmente la progressione della posa, in quanto appunto montata su escavatore. L'attrezzatura si è inoltre rivelata molto affidabile, nonostante il lavoro continuo e le condizioni climatiche, che negli scorsi mesi di gennaio e febbraio hanno implicato temperature medie di -30 gradi (con punte di -47 gradi), e comunque non sono mai salite al di sopra dei -25 gradi.

Simex VSE 40 in Siberia - application: bedding

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