Hand injuries due to high-pressure injection devices for painting in shipyards: Circumstances, management, and outcome in twelve patients

2003 ◽  
Vol 43 (5) ◽  
pp. 539-542 ◽  
Author(s):  
Matteo Valentino ◽  
Venerando Rapisarda ◽  
Concettina Fenga
Keyword(s):  
High Pressure ◽  
Hand Injuries ◽  
Pressure Injection ◽  
High Pressure Injection

scholarly journals Management of High-Pressure Injection Hand Injuries: A Multicentric, Retrospective, Observational Study

2019 ◽  
Vol 8 (11) ◽  
pp. 2000
Author(s):  
Ermanno Vitale ◽  
Caterina Ledda ◽  
Roberto Adani ◽  
Mario Lando ◽  
Massimo Bracci ◽  
...  
Keyword(s):  
High Pressure ◽  
Hand Surgery ◽  
High Viscosity ◽  
Hand Injuries ◽  
Medical Emergency ◽  
Early Management ◽  
Iron And Steel ◽  
Occupational Physicians ◽  
Pressure Injection ◽  
High Pressure Injection

Hand injuries after high-pressure injection are a medical emergency. These events occur frequently in workers during industrial cleaning, painting, and lubrication, and may have devastating consequences, leading to eventual amputation and poor functional outcomes. The authors have investigated the evolution, management, and outcome. Medical records of occupational medicine units and hand surgery units were collected in order to spot the high-pressure gear accident cases. Records were analyzed by dividing the subjects into two groups: those treated within 6 h and after 6 h of the trauma. A follow-up was carried out at least 1 year after treatment; the post-treatment outcomes were assessed. Of the 71 (100%) subjects, 26 (37%) were treated ≤6 h and 45 (63%) >6 h. A total of 28% (n = 20) underwent amputation. In 61% of cases, accidents had occurred in the iron and steel sector. High viscosity materials with a delayed treatment beyond 6 h seemed to determine compartmental syndrome and following amputation. A significantly better outcome was reported among subjects treated ≤6 h compared to those treated >6 h, 20% (n = 7) versus 26% (n = 9), respectively. Early management of this type of injury is crucial. The results of this study may contribute to providing guidelines to occupational physicians in order to best manage this type of emergency.

A Numerical Investigation on Mixing Characteristics of Natural Gas Jets With High-Pressure Injection

2021 ◽  
Author(s):  
Long Liu ◽  
Tianyang Dai ◽  
Qian Xiong ◽  
Yuehua Qian ◽  
Bo Liu
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Air Entrainment ◽  
Gas Jet ◽  
Swirl Ratio ◽  
Marine Engine ◽  
Low Speed ◽  
Pressure Injection ◽  
Mixing Characteristics ◽  
High Pressure Injection

Abstract With increasingly stringent emissions limitation of greenhouse gas and atmospheric pollutants for ship, the direct injection of natural gas on the cylinder head with high-pressure injection is an effective method to make a high power output and decrease harmful gas emissions in marine natural gas dual fuel engines. However, the effects on mixing characteristics of high-pressure natural gas underexpanded jet have not been fully understood. Especially, the injection pressure is up to 30 MPa with large injection quantity and critical surrounding gas conditions for the low-speed two-stroke marine engine. Therefore, this research is focused on the flow and mixing process of the natural gas jet with high-pressure injection under the in-cylinder conditions of low-speed two-stroke marine engine. The gas jet penetration, the distribution of velocity and density, the equivalence ratio and air entrainment have been analyzed under different nozzle hole diameters by numerical simulation. The effects of surrounding gas conditions including pressure, temperature and swirl ratio on air entrainment and equivalence ratio distribution were studied in detail. From the numerical simulation, it is found that the mixing characteristics of natural gas jet can be improved under in-cylinder conditions of higher ambient temperature and swirl ratio, which is relevant to the low-speed two-stroke marine engine.

scholarly journals High-Pressure Injection Injuries from Thinners. A Case Report.

1998 ◽  
Vol 47 (3) ◽  
pp. 995-997
Author(s):  
Goichi Okahara ◽  
Hiroshi Hokama ◽  
Kunihiko Uehara ◽  
Fuminori Kanaya
Keyword(s):  
High Pressure ◽  
Case Report ◽  
Pressure Injection ◽  
High Pressure Injection

Understanding High-pressure Injection Primary Breakup by Using Large Eddy Simulation and X-ray Spray Imaging

MTZ worldwide ◽  
2017 ◽  
Vol 78 (5) ◽  
pp. 50-57 ◽  
Author(s):  
Junmei Shi ◽  
Pablo Lopez Aguado ◽  
Noureddine Guerrassi ◽  
Gavin Dober
Keyword(s):  
High Pressure ◽  
Large Eddy Simulation ◽  
X Ray ◽  
Eddy Simulation ◽  
Pressure Injection ◽  
Large Eddy ◽  
Primary Breakup ◽  
High Pressure Injection
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