[Consequence calculation of a leak for liquid ammonia storage tank]

[Consequence calculation of a leak for liquid ammonia storage tank] Research Abstract Details 

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[Consequence calculation of a leak for liquid ammonia storage tank] Abstract Text:

Shulan Zhao,Linmin Feng,

OBJECTIVE: To calculate the consequence of acute ammonia poisoning accident which was caused by the leak of liquefied ammonia storage tank, so as to provide theoretical basis for working out the counterplan of accidents. METHOD: The amount of liquefied ammonia to be reserved, the pressure and temperature inside the tank were inputted; based on the physical chemistry principle, the evaporating amount was calculated; and using the proper diffusion model, the size of ammonia cloud, percentages of death and depth range of the poisonous gas etc was calculated. RESULTS: Assuming the leaky tank had liquefied ammonia 50 t, the pressure and the temperature were 2.5 MPa and 30 degrees C respectively, the evaporating amount and the size of ammonia cloud were calculated. The radiuses, of the ammonia released cloud of severe, moderate and mild hazard were 108 m, 216 m, 370 m respectively; if the exposured time was 30 min, the percentage of death would be 50%; if the exposured time was 5 min, the percentage would be 10%; if the exposured time was 2 min, the percentage would be 2.5%. When the stable degree of circumstance was C, the wind speed was 2.3 m/s and the outside concentration of the cloud was 4000 mg/m3, dimension of cloud in X axis was 782 m and in Y axis was 88 m. CONCLUSION: The leaky consequence of liquefied ammonia was very serious. It is necessary to take preventive measures during production, storage, transportation and using of liquefied ammonia.

[Consequence calculation of a leak for liquid ammonia storage tank] Publishing Authors By Initials

S Zhao,L Feng,

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[Consequence calculation of a leak for liquid ammonia storage tank] Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Zhonghua lao dong wei sheng zhi ye bing za zhi = Z

VOLUME: 20

Page Numbers: 203-5

Journal Abbreviation: Zhonghua Lao Dong Wei Sheng Zh

ISSN: 1001-9391

DAY: 25

MONTH: Jun

YEAR: 2002

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LANGUAGE: chi

NlmUniqueID: 8410840

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Grant and Affiliation Information for [Consequence calculation of a leak for liquid ammonia storage tank]

AFFILIATION: Section of Occupational Hygiene, Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China.

Country: China

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MEDLINETA: Zhonghua Lao Dong Wei Sheng Zh

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