scholarly journals The Possibilities of Simultaneous Operation (SIMOPs) and Practicality of Positive Pressure Habitat in a Hazardous Industry: Where Process Safety Meets Occupational Hygiene

Author(s):  
Kennedy A. Osakwe

High risk industrial facilities require operational shutdowns to undertake maintenance activities when the interaction between maintenance activities and facility processes are potentially explosive. This study presents a model that circumvents this interaction thereby enabling simultaneous operations flammable hydrocarbon facility while hot work progresses. A mixed study in which qualitative data on Simultaneous Operation (SIMOPs) of a hydrocarbon facility, hot work and deployment of Positive Pressure Habitat were generated through a walk-through survey. Quantitative data on the exposures within and around the hot work activities were generated using air quality monitor to measure the concentration of welding particulates, portable ozone meter used to measure the ozone level, sound level meter to measure ambient noise level, personal noise dosimeter to measure personal noise level, Multi-gas Meter. While concentrations of chemical parameter, temperature, relative humidity, habitat pressure were not in exceedance of exposure limits; the average noise level and particulate matter (PM) 2.5 within the habitat were 87 – dB(A) and 65 µg/m3 respectively. The exceedances in noise and PM2.5 level was mitigated using hearing protection, respirator and local exhaust ventilation (LEV). A simultaneous operation involving live hydrocarbon facility and hot works was achieved using the Positive Pressure Habitat (PPH) as a buffer between flammable work environment and thermal energy emitted from hot work activities. Chemical pollutants were introduced by maintenance activities within the habitat but was however mitigated through occupational hygiene measures. This study validates the possibility of simultaneous operation in the event of two mutually explosive scenarios with the aid of process safety equipment’s and occupational hygiene measurements and control measures. Globally, downtimes in high risk industries occasioned by maintenance activities could be prevented by deploying process safety and occupational hygiene control strategies concurrently.

2020 ◽  
Author(s):  
Gobi Hariyanayagam ◽  
Sera Selvanthan Sundram Gunasekaran ◽  
Shargunan Selvanthan Gunasekaran ◽  
Nur Syafina Insyirah Zaimi ◽  
Nor Amirah Abdul Halim

BACKGROUND In late December 2019, an outbreak of a novel coronavirus disease (COVID-19; previously known as 2019-nCoV) was epidemiologically linked to seafood and wet animal market in Wuhan, Hubei, China. This event has instigated negative stigma among the general population to view the wet market as a high-risk location for potential transmission of coronavirus. OBJECTIVE This study investigated the prevalence of facemask use among general population visiting the wet market as well as factors contributing to unacceptable facemask practice. Setting The visitors to a district wet market selling range of live or freshly slaughtered animals during COVID-19 pandemic outbreak was observed for facemask practice. METHODS All Individuals visiting the market were observed for the type, category and practice of wearing facemas. Subjects were categorized into two groups of acceptable and unacceptable facemask practice. The Pearson chi-square was used to test for differences in investigated variables in the univariate setting and Binary Logistic regression model was used in the multivariate setting. Main outcome measure Prevalence, acceptance practice and odds ratio of unacceptance of facemask use. RESULTS Among 1697 individuals included in the final analysis, 1687 (99.7%) was observed wearing facemask with 1338 (78.8%) using medical-grade facemask. Among them, 1615 (95.7%) individuals facemask practice was acceptable while the reaming 72 (4.3%) individuals were observed with unacceptable facemask practice. Individuals using medical-grade facemask and high-risk age group are 6.4 times (OR=6.40; 95% CI, 2.00-20.43; p=.002) and 2.06 times practice (OR=2.06; 95% CI, 1.08-3.94; p=.028) more likely to have unacceptable facemask practice respectively. CONCLUSIONS High saturation of facemask among the general population is an adequate indicator of public hygiene measures strategy which can help to mitigate the COVID-19 epidemic impact. Alarmingly, the unacceptable facemask practice among high-risk population raises the need for a targeted approach by healthcare authorities to ensure satisfactory facemask use.


2011 ◽  
Vol 140 (6) ◽  
pp. 1102-1110 ◽  
Author(s):  
N. ARINAMINPATHY ◽  
N. RAPHAELY ◽  
L. SALDANA ◽  
C. HODGEKISS ◽  
J. DANDRIDGE ◽  
...  

SUMMARYA pandemic influenza A(H1N1) 2009 outbreak in a summer school affected 117/276 (42%) students. Residential social contact was associated with risk of infection, and there was no evidence for transmission associated with the classroom setting. Although the summer school had new admissions each week, which provided susceptible students the outbreak was controlled using routine infection control measures (isolation of cases, basic hygiene measures and avoidance of particularly high-risk social events) and prompt treatment of cases. This was in the absence of chemoprophylaxis or vaccination and without altering the basic educational activities of the school. Modelling of the outbreak allowed estimation of the impact of interventions on transmission. These models and follow-up surveillance supported the effectiveness of routine infection control measures to stop the spread of influenza even in this high-risk setting for transmission.


Author(s):  
Jason P. Williams ◽  
Farzan Sasangohar ◽  
S. Camille Peres ◽  
Alec Smith ◽  
M. Sam Mannan

Socio-technical systems, such as those in oil and gas, or the petrochemical and energy industries, are escalating in complexity, a consequence of increasingly advanced technologies, organizational constructs, and business functions that interact and depend on one another. These dynamic social and technological elements, coupled with the high risk inherent in these systems, have generated conditions that can bring about catastrophic failure and the tragic loss of human life, such as the disaster in Bhopal, India (1984) or the explosion in the Houston Ship Channel near Pasadena, Texas (1989). Historically, the perception of such complexities and the struggle to minimize catastrophic failures observed within the petrochemical industry have been attributed to the inherent variability in people. Therefore, process safety regulations associated with the Clean Air Act Amendments of 1990 and the Occupational Safety and Health Administration (OSHA) require employers to develop written process safety information or “procedures” which aim for consistency in plant operations and to help workers at the “sharp-end” of the system cope with unexpected events (OSHA, 2000). However, investigation reports since, such as the BP Texas City incident of 2005, suggest “outdated and ineffective procedures” as significant contributing factors to failure. Evidence from other studies suggest that procedures in complex environments are sometimes misunderstood, outdated, or simply not used (Bullemer & Hajdukiewicz, 2004). While there have been studies on procedural deviations and safety violations (Alper & Karsh, 2009; Jamison & Miller, 2000), employers continue to report a high rate of procedural breakdown as root causes for incidents (Bates & Holroyd, 2012). This warrants a contemporary, systems-oriented inquiry into process safety and behavior surrounding the use of the documents at different individual (e.g. cognitive), task, cultural, organizational, and environmental levels. This perspective appreciates the interdependent nature of these interrelated socio-technical elements and should provide insight into the effectiveness of current procedure systems, thereby informing future work in creating and empirically testing mitigation methods to address potential barriers. This research documents one part of a three part, large-scale project that investigates the issues with procedure forms, usage, adoption, and challenges in a wide range of high-risk industries. As such, the method was framed around first understanding the extent to which these challenges could be generalized between various locations. A grounded theory approach in qualitative data analysis, influenced by the Strauss & Corbin and Charmaz approaches (Bryman 2015) and facilitated by the analysis software MAXQDA-12 was used to examine 72 semi-structured interviews with operators of varying roles and experiences across 6 countries and an offshore drilling vessel. Findings reaffirm previous research, suggesting that the effectiveness of written procedures is limited by an abundance of outdated procedures plagued by information overload. New findings suggest that frequency of the task and the experience level of the worker would impact workers’ procedure use, with participants commenting that the perceived importance of these documents decreases significantly after initial training periods. Other unintended consequences associated with written procedural systems range from complications in using the documents around personal protective equipment (PPE) requirements and harsh weather, reactive organizational behavior surrounding changing procedures, and a general disconnect between the users and the writers of these documents. This is only exacerbated as management imposes pressure to use procedures on personnel despite the issues encountered with the documents, inhibiting valuable feedback within their organizations as personnel withhold information for fear of job security and potential punishment (in the form of 20-day suspension programs or termination). Moving forward, research is in-progress to identify the interdependencies between environmental, cultural, organizational, task, and personal factors unique to each location. This will provide insight regarding the extent to which procedures may not be generalized, after which a holistic view of procedure use in the industry will be offered. The resulting insight will point to recommendations for the future redesign of procedures’ role in promoting safe operations within petrochemical systems. Finally, the third part of this research project will demonstrate the efficacy of using visualizations as tools and methods in qualitative research for modeling complexity in socio- technical systems.


1998 ◽  
Vol 29 (2) ◽  
pp. 127-131 ◽  
Author(s):  
Alain Garrigou ◽  
Gabriel Carballeda ◽  
François Daniellou

2017 ◽  
pp. 93-97
Author(s):  
V.L. Dronova ◽  
◽  
O.I. Dronov ◽  
O.V. Lutsenko ◽  
R.S. Teslyuk ◽  
...  

The article presents data of economic efficiency of simultaneous operations in women with combined surgical and extra-gynecological pathology, allowing rational use of material and technical base of medical institutions, and conducted simultaneous operations leading to significant financial savings, both in hospital and at the outpatient . The objective: to determine the clinical and economic effectiveness of simultaneous operations in women with combined extra-gynecological and surgical pathology operated in the department of operative gynecology control IPOG (Institute of Pediatrics, Obstetrics and Gynecology) NAMS of Ukraine for 2015 and modified using special formulas. Patients and methods. The study laid out a retrospective analysis of the immediate results of surgical treatment of 40 patients department of operative gynecology control IPOG NAMS Ukraine. The calculation was performed on the following parameters: value of preoperative examination, providing perioperative medical support, operational support, anesthesia and postoperative laboratory monitoring. Results. Analysis of the research shows that simultaneous operation in two to three times shortens the patient’s stay in hospital and the duration of temporary disability, three times increases the cost-effectiveness of treatment and improve the quality of life of patients. To increase the profitability of the surgical departments recommended minimum break-even calculate the intensity of operations, which is the base for operational planning department. Conclusion. Conducting simultaneous operations in women with combined extra-gynecological and surgical pathology can effectively reduce the cost of surgical treatment of patients with no significant prolongation of the transaction period and the postoperative period. Simultaneous operations may be performed in specialized hospitals with modern equipment available and a multidisciplinary team of surgeons in identifying women with two or more diseases requiring surgical correction. Key words: simultaneous operation, economic efficiency, combined surgical and gynecological extragenital pathology in women.


Author(s):  
M. J. Stephens ◽  
M. A. Nessim

The integrity of aging pipeline systems is a major concern for operating companies. Because maintenance budgets are limited by economic constraints, operators must decide on how to best allocate the available maintenance resources. Optimal resource allocation involves the identification of high risk segments, and the determination of integrity maintenance activities for those segments that will lead to the highest reduction in overall operating risk. To identify high risk segments it is necessary to quantify the probability of line failure and to evaluate the consequences associated with different types of failure. To identify optimal maintenance activities for high risk segments it is also necessary to quantify the reductions in failure probabilities associated with various candidate integrity maintenance activities. Under the sponsorship of a number of pipeline companies and Government Agencies, C-FER has initiated a Joint Industry Program (JIP), to develop quantitative risk-based models and software tools for estimating the current level of operating risk and the risk reduction potential associated with distinct segments of pipe within a pipeline system. The key steps in the methodology are system prioritization and maintenance optimization. At the prioritization stage, segment-specific attributes are processed to provide an estimate of the failure rate for individual segments, and an estimate of the potential consequences of line failure. The failure rates are then combined with the loss potential into a measure of risk, and used to rank segments according to the calculated level of operating risk. At the maintenance optimization stage, a formal decision analysis approach is employed to identify the best maintenance strategy for high risk segments based on a comparison of the costs and risk reductions associated with each available option.


CJEM ◽  
2015 ◽  
Vol 17 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Nayer Youssef ◽  
Karen E. Raymer

AbstractAlthough penetrating neck injuries (PNIs) represent a small subset of patients presenting to the emergency department (ED), they can result in significant morbidity and mortality. The approach to airway management in PNI varies widely according to clinical presentation and local practice, such that global management statements are lacking. Although rapid sequence intubation (RSI) may be safe in most patients with PNI, the high-risk subset (10%) of patients with laryngotracheal injury require particularly judicious airway management. It is not known if RSI is safe in such patients, nor has there been reported use of videolaryngoscopy in patients with open PNI. Established principles of airway management in patients with an open airway injury include the avoidance of both positive pressure bag-mask ventilation and blind tube passage and the early consideration of a surgical airway. Because this high-risk subset may not be clinically apparent on initial presentation in the ED, such guiding principles apply to all patients with PNI until the nature of the injury is more accurately defined. In this report, we present the case of a patient who presented to the ED with a zone II open PNI, which occurred as a result of a stab wound.


CHEST Journal ◽  
1996 ◽  
Vol 110 (3) ◽  
pp. 724-728 ◽  
Author(s):  
Massimo Antonelli ◽  
Giorgio Conti ◽  
Luigi Riccioni ◽  
Gianfranco Umberto Meduri

2018 ◽  
Vol 113 ◽  
pp. 30-39 ◽  
Author(s):  
Farzan Sasangohar ◽  
S. Camille Peres ◽  
Jason P. Williams ◽  
Alec Smith ◽  
M. Sam Mannan

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