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Record W3194731736 · doi:10.48336/8tyy-gh89

Managing risks through ALARP in offshore oil and gas operations

2022· dissertation· en· W3194731736 on OpenAlexaffabout
Megan Costello

Bibliographic record

VenueMemorial University Research Repository (Memorial University) · 2022
Typedissertation
Languageen
FieldDecision Sciences
TopicRisk and Safety Analysis
Canadian institutionsMemorial University of Newfoundland
Fundersnot available
KeywordsSubmarine pipelineEngineeringRisk managementOffshore oil and gasEnvironmental planningService (business)BusinessPetroleum industryRisk analysis (engineering)Operations managementGeographyFinanceEnvironmental engineeringMarketing

Abstract

fetched live from OpenAlex

This thesis explores risk management techniques and the various methods that are available to aid in the determination of risk. It highlights both quantitative and qualitative risk management tools and focuses on Newfoundland and Labrador's local oil and gas industry. The concept of maintaining risk levels to As Low As Reasonably Practicable (ALARP) throughout the lifecycle of a facility is a focal point of this thesis. Some of the more significant Major Accident Events (MAE) of the past are highlighted with a focus on the effects those MAEs have had on the local oil and gas industry. In particular, the actions leading up to and during the Piper Alpha disaster are reviewed. Exploration of the aftermath of the Piper Alpha and the effects both it and the Ocean Ranger disaster have on the Canadian and Newfoundland regulatory regime are discussed. The permanent Newfoundland and Labrador offshore oil and gas assets/facilities are highlighted; The unique requirements some of these facilities are currently facing, as the assets age and transition into a period of extension of the original design life, are explored. With age, there are new hazards and differing risks to the overall facility. Aging mechanisms, as they pertain to safety systems, and the determination of service life, are explored. Since the late 1980s, the Canada-Newfoundland Labrador Offshore Petroleum Board (C-NLOPB) regulates local offshore installations through a suite of regulations and guidelines. The current regulatory regime is somewhat prescriptive in that, for the large part, it dictates how an Operator is to achieve regulatory compliance. It is the intention that the regulatory framework is to transition from a prescriptive based regulatory regimen to a hybrid approach where goal-based regulations are preferred through the Frontier and Offshore Regulatory Renewal Initiative (FORRI). FORRI is a federal/provincial government partnership initiative focusing on regulations in all offshore administrative areas in Canada. FORRI intends to modernize the regulatory framework to performance-based requirements, reduce redundancy across multiple regulations, bring standards up to date, and enable a more efficient and effective regulatory regime. FORRI intends to eliminate five existing regulations and integrate them into one new framework regulation. The proposed policy intention for the Framework Regulations is reviewed against the current suite of C-NLOPB regulations. The more substantial differences concerning Technical Safety design are presented as a gap assessment. The assessment is not intended to be an exhaustive listing; however, the aim is to highlight some of the more prudent changes potentially affecting the discipline of Safety and Risk and associated design.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.007
metaresearch head score (Gemma)0.011
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Qualitative · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.017
Threshold uncertainty score0.040

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0070.011
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.002
Science and technology studies0.0030.003
Scholarly communication0.0070.004
Open science0.0010.004
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0020.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.087
GPT teacher head0.364
Teacher spread0.277 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designQualitative
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2022
Admission routes2
Has abstractyes

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