scholarly journals Fatigue and Psychological Distress: A Case Study Among Shift Workers of an Iranian Petrochemical Plant, During 2013, in Bushehr

2015 ◽  
Vol 17 (10) ◽  
Author(s):  
Yahya Rasoulzadeh ◽  
Ahmad Bazazan ◽  
Abdolrasoul Safaiyan ◽  
Iman Dianat
Keyword(s):  
Psychological Distress ◽  
Petrochemical Plant ◽  
Shift Workers

scholarly journals Dynamic Simulation of Petrochemical Wastewater Treatment Using Wastewater Plant Simulation Software

2018 ◽  
Vol 203 ◽  
pp. 03005
Author(s):  
Idzham Fauzi Mohd Ariff ◽  
Mardhiyah Bakir
Keyword(s):  
Simulation Model ◽  
Dynamic Simulation ◽  
Stable Condition ◽  
Oxygen Demand ◽  
Simulation Software ◽  
Petrochemical Plant ◽  
Dynamic Simulation Model ◽  
Plant Monitoring ◽  
Plant Simulation

A dynamic simulation model was developed, calibrated and validated for a petrochemical plant in Terengganu, Malaysia. Calibration and validation of the model was conducted based on plant monitoring data spanning 3 years resulting in a model accuracy (RMSD) for effluent chemical oxygen demand (COD), ammoniacal nitrogen (NH3-N) and total suspended solids (TSS) of ±11.7 mg/L, ±0.52 mg/L and ± 3.27 mg/L respectively. The simulation model has since been used for troubleshooting during plant upsets, planning of plant turnarounds and developing upgrade options. A case study is presented where the simulation model was used to assist in troubleshooting and rectification of a plant upset where ingress of a surfactant compound resulted in high effluent TSS and COD. The model was successfully used in the incident troubleshooting activities and provided critical insights that assisted the plant operators to quickly respond and bring back the system to normal, stable condition.

Performance optimization of organizations considering economic resilience factors under uncertainty: A case study of a petrochemical plant

2019 ◽  
Vol 231 ◽  
pp. 1526-1541 ◽  
Author(s):  
Shima Pashapour ◽  
Ali Bozorgi-Amiri ◽  
Ali Azadeh ◽  
Seyed Farid Ghaderi ◽  
Abbas Keramati
Keyword(s):  
Performance Optimization ◽  
Petrochemical Plant ◽  
Economic Resilience ◽  
Resilience Factors

scholarly journals Treating prolonged post-concussion symptoms in a pediatric patient with the simultaneous application of cognitive behavioral therapy and subthreshold exercise: A case study

Neurology ◽  
2018 ◽  
Vol 91 (23 Supplement 1) ◽  
pp. S16.1-S16
Author(s):  
Sonal Singh ◽  
Douglas R. Polster ◽  
Meeryo Choe ◽  
Christopher Giza ◽  
Talin Babikian
Keyword(s):  
Psychological Distress ◽  
Cognitive Behavioral Therapy ◽  
Behavioral Therapy ◽  
Physical Exertion ◽  
Rating Of Perceived Exertion ◽  
Self Report ◽  
Cognitive Behavioral ◽  
Simultaneous Application ◽  
Patient Reported

ObjectiveUse a novel, simultaneously applied cognitive behavioral therapy (CBT) and subthreshold exercise treatment (STE) for a 14-year old patient with persistent post-concussion symptoms (PPCS) to facilitate a return to function in school/sport.BackgroundPatient sustained a mild TBI while playing basketball on October 29, 2016. Neurologic exam on July 7, 2017 was negative, but the patient reported PPCS, with a graded symptom checklist (GSC) score of 26. Primary symptoms were headache and anxiety in relation to cognitive and/or physical exertion. The patient attributed anxiety to anticipating the onset of symptoms after exercise.Design/methodsThe 6-week combined CBT/STE intervention included psychoeducation, cognitive restructuring, and relaxation training combined with the STE protocol. Supervised physical exertion exposure began with aerobic exercise on a stationary bike and progressed to sport-specific activity while the patient simultaneously engaged in CBT. Pre- and post-intervention data included physiologic measures (heart rate [HR] and power output [PO] on exercise bike), a subjective measure of exertion (Borg's Rating of Perceived Exertion [RPE]), and psychological self-report questionnaires.ResultsAfter 6 sessions, patient was able to engage in strenuous exercise with reduced symptom exacerbation as demonstrated by his ability to reach 175 bpm HR with 350 watts of PO with decreased reported symptoms, a significant improvement from the first session. The patient reported a decrease in anxiety and psychological distress as well as an increase in emotional and school functioning. Parent report indicated an increase in the patient's overall health, social, and emotional functioning.ConclusionsEngaging in a six-week combined CBT/STE protocol resulted in improvements in ability to tolerate physical exertion, decreases in psychological distress, and a return to function. This case study demonstrated the feasibility & positive impact of simultaneous, dual treatment model for PPCS in adolescents. It also highlighted the need to address the psychological distress that occurs in patients with PPCS.

scholarly journals Improving the Energy Efficiency of Petrochemical Plant Operations: A Measurement and Verification Case Study Using a Balanced Wave Optimizer

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4136 ◽  
Author(s):  
Man Hin Eve Chan ◽  
Kar-Kit Chu ◽  
Hin-Fung Chow ◽  
Chi-Wing Tsang ◽  
Chi Kuen Danny Ho ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Raw Materials ◽  
New Technology ◽  
Electrical Energy ◽  
Circulation System ◽  
Petrochemical Plant ◽  
Actual Performance ◽  
Measurement And Verification ◽  
Water Pumps

The Chinese petrochemical industry is facing pressure to meet strict targets of energy consumption and carbon emission reductions. Water pumps are the primary equipment used in most chemical and agrochemical industries sectors since water is commonly used for cooling and heating purposes, but these pumps also consume a large amount of energy. Other uses of water pumps in these industries include producing steam for heating, preparing reaction media or absorptive reagents, rinsing products, and distilling. As for the electrical components of the water pump systems, current technologies of variable frequency drives and superconducting transmission lines are unable to increase the energy efficiency of these systems with a fixed load. However, the Balanced Wave Technology (BWT) is offered as a solution to overcome these limitations. In this report, a case study using a BWT optimizer is conducted on a closed loop water circulation system. Two BWTs are added to the individual motor-controlled section of each pump that is being used on the switchboard. For the first time, a detailed example was provided on how to implement option B of the International Performance Measurement and Verification Protocol (IPMVP) in China by evaluating the performance of BWT as an energy conservation measure. The evaluated periods included those of the baseline, post-installation, and actual performance of the optimizers. An average saving of energy of about 10.46% is recorded in a 5-week reporting period. On this basis, that annual electricity saved is estimated to be 66,447.18 kWh, which is equivalent to the emission of 68.94 metric tons of CO2e. This case study demonstrates in detail how option B of IPMVP can be implemented for BWTs applied on pumping systems. In addition to petrochemical production plants, other industries like textile and clothing sections, which are heavy users of water and electrical energy with fixed loads in the production processes of raw materials, fiber, yarn, and fabric, as well as textile-dyeing and final treatment, could benefit from applying this new technology.

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