Analiza postupaka razgradnje nepomičnih pučinskih proizvodnih platformi

master's thesis

• Title (english): Analyisi of decomissioning of fixed offshore platforms
• Author: Ivan Fatović
• Mentor: Neven Hadžić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Shipbuilding; Construction and Maintenance Technology for Floating and Maritime Structures

Abstract

Razgradnja (dekomisija) pučinskih proizvodnih platformi završni je dio životnog ciklusa jedne složene industrijske strukture. Iako relativno nova grana industrije, u posljednjem desetljeću doživljava snažan rast sa značajnim udjelom troškova u životnom vijeku proizvodne platforme. Razgradnja je u suštini obrnuti proces od izgradnje i kao takav obavezan je nakon završetka eksploatacije platforme. Suvremeni međunarodni standardi i državni zakoni obvezuju operatera polja na potpuno uklanjanje strukture i dovođenje prostora iznad bušotine u prvobitno stanje. Problemi koji se javljaju u ovom procesu su tehničke, tehnološke i financijske prirode. S tehničke i tehnološke strane potrebno je pronaći moguća rješenja za razgradnju i izabrati najpovoljnije koje će biti dovoljno sigurno za radnike, strukturu i okoliš. U financijskom smislu potrebno je prije puštanja platforme u pogon napraviti analizu troškova razgradnje te računati na znatne troškove koji će uslijediti nakon prestanka proizvodnje i zarađivanja na eksploatacijskom polju. U ovom radu obuhvaćen je pregled međunarodnih i nacionalnih propisa i preporuka koji obvezuju operatera na razgradnju, opisane su suvremene metode razgradnje te je navedena metoda razgradnje koja bi se mogla primijeniti prilikom razgradnje plinskih proizvodnih platformi na Jadranu, uz pregled mogućih plovila koji bi se upotrebljavali za podizanje strukture. Napravljena je okvirna analiza troškova za neke karakteristične plinske platforme u Jadranu.

Abstract (english)

Offshore decommissioning is a final step in life cycle of such complex industrial structure. Although a relatively new industry, it has been growing steadily in the last decade, accounting for a large share of production costs towards the end of offshore platform life cycle. Essentially, decommissioning is often a reverse installation and it is mandatory after the end of production. Modern international standards and national laws commit field operator to full removal of offshore structure in order to return the production site to its original state. Field operators face serious technological and economic issues during the decommissioning phase. As for the technological part, it is necessary to find rational and safe solutions and methods for workers, structure itself and the environment. As for the financial part, a cost analysis has to be done before the start of production in order to ensure enough funds for decommissioning after the end of production. Both international and national recommendations and regulations, necessary for decommissioning, are reviewed, some modern methods potentially to be used for decommissioning in the Adriatic Sea, are outlined, along with some heavy lifting vessels. Financial analysis for typical offshore platform in Adriatic Sea is given, as well.

• Keywords: razgradnja; dekomisija; zakonodavni okvir; plinske platforme
• Keywords (english): decommissioning; rules and regulations; offshsore lifts; gas offshore platforms
• Language: croatian
• URN:NBN: urn:nbn:hr:235:108076
• Study programme: Title: Naval Architecture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka brodogradnje (magistar/magistra inženjer/inženjerka brodogradnje)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 17:12:40