Failure Mode and Effect Analysis of Subsea Multiphase Pump Equipment

Oluwatoyin, Shobowale Kafayat; Hashim, Fakhruldin Mohd; Hussin, Hilmi

doi:10.1051/matecconf/20141305001

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…The components were classified into mechanical, electrical, and auxiliaries. The failure modes for mechanical components are as follows: for the submersible pump, the study of Oluwatoyin et al [31] about the failure modes of the submersible pump was utilized while for the aeration blowers, due to the lack of available literature, the actual equipment manual [32] was reviewed to determine the failure modes of relevant components. The failure modes of compact mechanical components were generalized to failure like the chlorinator pump failure.…”

Section: Identification Of Failure Modesmentioning

confidence: 99%

Sewage Treatment Facility Maintenance: A Risk-based Approach for High-rise Residential Property

Lantaca

2024

E3S Web of Conf.

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Although fuzzy-failure modes and effects analysis (Fuzzy-FMEA) is one of the risk-based maintenance approaches that has been used to devise or to improve an existing preventive maintenance program in various industries and settings, applying the technique in the context of sewage treatment facility (STF) is lacking. The proponent investigated the cause of failing effluent parameters of a high-rise residential property through the combination of the Ishikawa Diagram and 5-Whys, then the technique was applied and improved using the data gathered from qualified respondents with different exposure, and backgrounds, among others who answered 10-fuzzy scales regarding the severity, occurrence, and detectability of each failure modes, and ranked the importance of each chamber of an SBR-type STF. Results revealed that the Refined FRPN values emphasized the failure modes with relevance to each other by obtaining values within their functional counterpart resulting in a more apt categorization and prioritization than the FRPN. The paper shows that Fuzzy-FMEA is successful in devising a risk-based approach for SBR-type STF for high-rise residential property with an effective means of addressing the aggravating effluent parameters in the maintenance aspect to comply with the Philippine Department of Environment and Natural Resources (DENR) Department Administrative Order (DAO) 2016-08.

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Section: Identification Of Failure Modesmentioning

confidence: 99%

Sewage Treatment Facility Maintenance: A Risk-based Approach for High-rise Residential Property

Lantaca

2024

E3S Web of Conf.

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Application of System-Theoretic Process Analysis to the Isolation of Subsea Wells: Opportunities and Challenges of Applying STPA to Subsea Operations

Kim

Lundteigen

Hafver

et al. 2018

Day 4 Thu, May 03, 2018

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Systems-Theoretic Process Analysis (STPA) is a recently developed hazard identification technique that is based on control and systems theory. Previous studies on STPA emphasize two major strengths of the method: (1) STPA provides a systematic top-down approach that enables early identification of system flaws, and (2) STPA covers a wider scope of hazards compared to traditional methods. Despite these advantages, there are only a limited number of studies that have applied the method to subsea systems. It is therefore of interest to investigate how STPA can be used to formulate new or verify existing requirements to safety-critical systems for subsea facilities. One example is the isolation of subsea wells initiated by the platform emergency shutdown (ESD) system. The purpose of this paper is to apply STPA to this function, and to discuss opportunities, challenges and possible implications of the results obtained from the analysis. The paper starts with a thorough literature study and includes an analysis of the insights and recommendations made from other industry sectors and application areas. This review is followed by the STPA analysis of the proposed system, with focus on the identification of the unsafe control actions and safety constraints for subsea well isolation. It is investigated how STPA is able to address specific design philosophies and subsea operating conditions, like fail-safe function of subsea ESD valves, long distance between top-side control system and subsea valves, and dynamic behavior of the control structure. The paper concludes with discussions and suggestions on how the STPA procedure may be improved for application to subsea systems.

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Unmanned Full Processing Platforms; Using Subsea Technology as Enabler

Frostad¹,

Singer²,

Fløttum³

et al. 2020

Day 3 Wed, May 06, 2020

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Offshore full-processing platforms are permanently manned due to the large number of operational and maintenance tasks. Having these platforms unmanned and remotely operated would improve the field economy, reduce the personnel risk and minimize the environmental footprint. The use of subsea mindset and technology in the platform design can enable such a shift in the manning and operations regime. Unmanned platforms have been in operation for decades in the form of simple platforms without complex process functions. The frequency of visits has however, turned out to be quite high. Further, maintaining facilities as unmanned has proved challenging when processing functions are added. To enable full-processing platforms to operate as unmanned installations, a new approach to design can be adopted. This new approach is characterized by use of design principles for complex subsea processing facilities and benefitting from the digital revolution. A main difference when comparing subsea and topside processing facilities is the significant number of utilities, support and safety functions on a platform. For the new platform concept proposed, several of these functions are simplified or eliminated, which reduces complexity, the need for maintenance and cost. The platform concept is among others proposed without accommodation and helideck. Access by personnel and evacuation is via bridge to Service Operation Vessel. By examining the Mean Time Between Failure for topside vs subsea equipment, it is evident that the subsea equipment has higher availability and requires less maintenance. For the topside equipment which as of today is maintenance intensive, e.g. compressors and pumps, the concept includes using subsea derived equipment. Seal-less subsea derived compressors are already proven for topside application. The maintenance need is determined based on surveillance by sensors and predictive analytics, i.e. predictive maintenance. On a staffed facility there are cranes and trolleys for material handling and personnel are carrying out in-situ inspection and repairs, representing a significant number of offshore man-hours. For Subsea installations, the principle is plug & play replacement by use of intervention vessels. The layout of the new platform concept is arranged in a subsea derived manner adopting the replacement principle by use of vessels. Also, the platform is proposed with robotics tailored for intervention of minor items. New technologies as drones and crawlers are developing rapidly and are used for inspection tasks replacing personnel, in addition to sensors and cameras and in combination with a digital twin. These technologies are comparable to using ROV for inspection of subsea equipment. This paper will present the conceptual idea for the subsea derived full-processing unmanned platform in more detail, and discuss benefits compared to a conventional staffed full-processing platform.

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Failure Mode and Effect Analysis of Subsea Multiphase Pump Equipment

Cited by 3 publications

References 8 publications

Sewage Treatment Facility Maintenance: A Risk-based Approach for High-rise Residential Property

Sewage Treatment Facility Maintenance: A Risk-based Approach for High-rise Residential Property

Application of System-Theoretic Process Analysis to the Isolation of Subsea Wells: Opportunities and Challenges of Applying STPA to Subsea Operations

Unmanned Full Processing Platforms; Using Subsea Technology as Enabler

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