Probability of actuating a seismic shutoff device

2016 ◽  
Vol 45 (12) ◽  
pp. 1997-2010 ◽  
Author(s):  
Praveen K. Malhotra
Keyword(s):  
Shutoff Device

scholarly journals ANALYSIS OF WELL DESIGNS, THEIR SERVICE LIFE UNTIL FIRST REPAIRS FOR CASING STRINGS LEAK TIGHTNESS RESTORATION

2016 ◽  
pp. 56-59
Author(s):  
A. A. Zalyatdinov ◽  
L. B. Huzina
Keyword(s):  
Service Life ◽  
Quality Service ◽  
Leak Tightness ◽  
Conventional Methods ◽  
Shutoff Device

This paper describes the issues of well cementing quality, service life and types of repairs for restoration of failed leak tightness of casing strings and cementing. The analysis run for more than 100 wells in the Fedorovskaya area, the field Romashkinskoye, provided the data comparing the quality of casing strings cementing by conventional methods and cementing of wells where a profile shutoff device was used.

scholarly journals Application of Internet of Things in a Kitchen Fire Prevention System

2019 ◽  
Vol 9 (17) ◽  
pp. 3520 ◽  
Author(s):  
Wei-Ling Hsu ◽  
Ji-Yun Jhuang ◽  
Chien-Shiun Huang ◽  
Chiu-Kuo Liang ◽  
Yan-Chyuan Shiau
Keyword(s):  
High Temperature ◽  
Reporting System ◽  
Fire Prevention ◽  
Loud Sound ◽  
Gas Leak ◽  
Prevention System ◽  
Entrance Door ◽  
Gas Supply ◽  
Main Entrance ◽  
Shutoff Device

When using a gas stove to cook, the food or oil in the pot or pan may catch fire because of an excessively high temperature. In addition, people may be uncertain as to whether they have turned off the gas stove before leaving home and therefore feel compelled to return home to check. To solve these problems, this study has developed a smart kitchen fire prevention system that possesses the following devices and functions. (1) Sensors are installed above the stove top. When they detect flames, high temperature, or a gas leak, they immediately activate the gas shutoff device to turn off the gas supply. (2) The alarm produces a loud sound and flashes to warn the residents. (3) The Line reporting system sends Line messages to notify the residents and the community management center, and the main entrance door is automatically unlocked to allow relevant personnel to enter the house to deal with the accident. (4) An Internet protocol camera is installed in the kitchen to enable the residents to monitor the gas stove on their mobile phones. If they find the gas stove is still turned on, they can activate the gas shutoff device to shut off the gas supply from their phones. The system developed in this study can effectively reduce the loss that results from a kitchen fire.

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