scholarly journals Long-term immunity alterations in the employees of the high hydrogen sulfide content gas condensate processing facility

2021 ◽  
Author(s):  
OV Boiko ◽  
YuI Dotsenko
Keyword(s):  
Hydrogen Sulfide ◽  
Immune System ◽  
Immune Status ◽  
Phagocytic Index ◽  
High Hydrogen ◽  
Gas Processing ◽  
Processing Facility ◽  
Condensate Processing ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content

The current measures for protection of the gas processing plant employees cannot fully prevent the impact of pollutants. Evaluation of the immune system is one of the methods for monitoring of the employees' health, and testing the system of measures used to improve the working conditions. The study was aimed to identify alterations in the immune status of the employees at the gas processing and high hydrogen sulfide content condensate processing facility depending on their working experience. The working environment and the employees' immune system were evaluated by standard methods. Pollutants were detected with the Bruel & Kjaer 1302 Multi-Gas Monitor, and the Tsvet-550 gas chromatographer. A total of 160 employees and 81 controls (blood donors of the regional blood transfusion station) were surveyed. The immune system was evaluated using the System 9000 Plus hematological analyser, Cyto FLEX LX flow cytometer, UNICO 2100UV specrophotometer, and KFK-3-03-ZОМЗ photometer. It was concluded that the existing complex of occupational and industrial hazards affects the immune status of the main production unit employees, which is reflected in the decreased CD20 levels and increased CD8 levels along with the constant levels of CD4. Correlations were revealed between the immuniglobuline level alterations, decrease in the phagocytic index and phagocytic number, as well in lysozyme activity, and the working experience. Pollutant exposure results in altered immunity of the employees, which could be considered the adaptation mechanism.

Effective technology of producing wire for operation in media with high hydrogen sulfide content

1989 ◽  
Vol 25 (3) ◽  
pp. 338-340
Author(s):  
I. I. Dikii ◽  
A. N. Semavina ◽  
I. M. Protsiv ◽  
V. Sh. Pavlyutenkova
Keyword(s):  
Hydrogen Sulfide ◽  
High Hydrogen ◽  
Effective Technology ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content

Safety and Environment Requirements and Systems for Offshore Installations Operating in Arctic Environments

2002 ◽  
Author(s):  
Sava Medonos ◽  
Robert W. Brewerton ◽  
Valentin I. Jouravel
Keyword(s):  
Hydrogen Sulfide ◽  
Environmental Protection ◽  
Material Selection ◽  
Operating Conditions ◽  
The Arctic ◽  
Temperate Climate ◽  
High Hydrogen ◽  
Sulfide Content ◽  
Accidental Releases ◽  
Hydrogen Sulfide Content

Recent offshore developments in the Arctic in Russia, the US, Canada and other locations have brought additional requirements on critical systems for safety and environmental protection. The design of the systems broadly follows the design principles for temperate climate. However, a substantial number of key additional requirements exist that are paramount for operations of the systems at down to −45 °C and in ice and snow. Equipment reliability reduces with reducing sub-zero temperature. Production, emergency and ancillary equipment have to be heated to prevent the equipment malfunctioning and to prevent the development of upset conditions into hazardous situations. This is valid for both preventative and mitigating measures. The heating has to have a high reliability, should it be HVAC systems or trace heating. A specific focus should be given to material selection, and this not only for operating conditions, but also for transportation and storage where equipment may be exposed to low temperature extremes, which may permanently change the material crystalline structure and its properties. The extent to which optimum solutions to these problems can be found is often dependent upon the nature of the overall platform layout, especially where designing against major hazards is concerned. Whole-year protected tunnels are preferred as means of escape, with heating for winter conditions to prevent blockage by ice and snow and ensure high availability whatever weather. They have to be ventilated by highly reliable ventilation systems. A number of fields in the Arctic have a very high hydrogen sulfide content, which together with sea and ice conditions sets requirements for special amphibious evacuation craft. Evacuation by means of icebreakers is often not possible for all conditions as icebreaker engines cannot be operated in air with hydrogen sulfide content. A possible solution may be an amphibious survival craft ARKTOS that have been used to date on some installations. A greater emphasis has in recent years been put on the protection of the environment against operational emissions and discharges, and accidental releases and spills. Whilst the incipient causes of accidental releases and spills are similar to those leading to fire and explosion hazards, recovery from a hydrocarbon spill situation requires specialised equipment with satisfactory performance specific for the Arctic. Based on the authors’ experience from several recent projects, the Paper presents additional requirements for safety and environmental protection systems for Arctic conditions, addresses incipient causes of equipment and structural failures and it outlines technical solutions for risk reduction, many of which have been used in practice.

Hydrogen sulfide content in pregnant women with preeclampsia in late gestation and their newborns

2021 ◽  
Vol 66 (7) ◽  
pp. 396-400
Author(s):  
Irina Gennadievna Popova ◽  
O. G. Sitnikova ◽  
S. B. Nazarov ◽  
R. I. Sadov ◽  
I. A. Panova ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Late Gestation ◽  
Control Group ◽  
Uncomplicated Pregnancy ◽  
Hypertensive Disorders ◽  
Sulfide Content ◽  
Postnatal Adaptation ◽  
Group 2 ◽  
Hydrogen Sulfide Content ◽  
Group 1

We examined 70 women who were 22-40 weeks pregnant and their newborns. Of these, 15 women with moderate PE made up group 1, 22 women with severe PE-group 2, and 55 women with uncomplicated pregnancy without hypertensive disorders - the control group. Blood was collected from women when they were admitted to the clinic, and blood was taken from newborns for 3-5 days of life. The concentration of hydrogen sulfide was determined by the method of K. Qu et al [17]. There was a decrease in the level of hydrogen sulfide in the blood serum of women whose pregnancy was complicated by severe preeclampsia. In newborns born to mothers with preeclampsia, an increase in the concentration of hydrogen sulfide was detected in the blood, which is probably a compensatory reaction aimed at restoring vascular homeostasis during early postnatal adaptation.

The Research on Influence Factors and Control of Hydrogen Sulfide during Steam Drive

2014 ◽  
Vol 962-965 ◽  
pp. 736-740
Author(s):  
Feng Yan
Keyword(s):  
Hydrogen Sulfide ◽  
Experimental Studies ◽  
Influence Factors ◽  
Chemical Agent ◽  
Content Increase ◽  
Prevention Measures ◽  
Steam Drive ◽  
Rate Of Increase ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content

This project carries out the research on influence factors of wells producing hydrogen sulfide in connection with the actual situation of producing hydrogen sulfide in Qi-40 steam drive process. Experimental studies have shown that: A. temperature is the main external factors of produce hydrogen sulfide, It will produce hydrogen sulfide when temperature is above 100°C, hydrogen sulfide content increase about 300ppm in average when the temperature increase per 20°C; hydrogen sulfide content will be in the greatest increase when temperature at the range of 160°C~180°C; the rate of increase in the levels of hydrogen sulfide will significantly reduce when temperature above 180 °C.B. Adding Chemical agent with surface activity can inhibit the release of hydrogen sulfide. C. Adding acid chemical agent will make the content of hydrogen sulfide increase. The experimental study also investigated hydrogen sulfide prevention measures.

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