Galvanic-Corrosion Failure of a Malleable Iron Latch in a Valve for an Automatic Sprinkler System

2019 ◽  
Keyword(s):  
Galvanic Corrosion ◽  
Sprinkler System ◽  
Corrosion Failure ◽  
Malleable Iron ◽  
Automatic Sprinkler

Guidance of Equipment Risk Management With RBI Techniques

2010 ◽  
Author(s):  
Yu Qu ◽  
Xiangmin Hao ◽  
Anhe Jiang ◽  
Mingchao Gao
Keyword(s):  
Risk Management ◽  
Management System ◽  
Sprinkler System ◽  
Oil Refinery ◽  
Release Time ◽  
Positive Role ◽  
Corrosion Failure ◽  
Continuous Release ◽  
The Difference ◽  
Major Factors

The West Pacific Petrochemical Company Limited, Dalian is the first enterprise that adopts risk-based inspection (RBI) technology in the oil refinery plants in China, the application of RBI technology plays a positive role in guaranteeing long-cycle operation of the plant. With the continuous deepening of degree of understanding of API 581 standard and continuous enriching of experience with use of RBI software, by tracing the risks, there are three major factors that affect the risk of equipment or component, i.e. risk consequence, failure likelihood and management system, which are taken as the direction of efforts for guiding the implementation of equipment risk management measures. If there are litigation measures in the release consequence (sprinkler system or passive litigation technology) that can reduce continuous release rate and release time, then the release consequence of equipment can be reduced; if inspection techniques are adopted with respect to corrosion failure mechanisms or the proportion of inspection is increased in the failure likelihood, then the failure likelihood can be reduced effectively; and other measures such as analyzing the problems listed in each item of management system assessment and taking measures to improve management level and thus increase scores of management system by comparing the difference between the management of the enterprise itself and those listed in the standard. By implementing above measures, the ability of equipment risk management is improved and thus the intrinsic safety of equipment management is effectively guaranteed.

scholarly journals The efficiency assessment of an automatic sprinkler system

2021 ◽  
Vol 30 (1) ◽  
pp. 42-53
Author(s):  
L. T. Tanklevskiy ◽  
A. A. Tarantsev ◽  
O. A. Zybina ◽  
I. A. Babikov
Keyword(s):  
Heating Time ◽  
Sprinkler System ◽  
Differential Heat ◽  
Critical Height ◽  
Limit Value ◽  
Heat Detector ◽  
Fire Scenarios ◽  
Ceiling Height ◽  
Automatic Sprinkler ◽  
The One

Introduction. Сases of ineffective activation of automatic sprinkler fire-fighting systems (AFFS), designed pursuant to current standards, have made it necessary to address the following three issues: a) identification of reasons for ineffective activation; b) examination of AFFS systems to ensure their successful activation in case of fire; c) making a list of recommendations for AFFS designers. These issues can be resolved with reference to Appendix B to new SP (Construction Regulations) 485.13130.2020.Maximal critical height of sprinkler placement. Models of fire development were used to design the roof height limit and the AFFS bulb heating time. If the ceiling height exceeds the limit value, sprinklers cannot be activated in a timely manner. This leads to delays in the AFFS activation, and, as a result, the fire area exceeds the one safeguarded by the sprinkler.Acceptable sprinkler height. The analysis of fire scenarios and bulb heating models allows to more accurately project the feasibility of timely AFFS activation. This, in turn, allows to solve the three above listed problems.Using a differential heat detector to activate sprinklers. If it is established that the use of the AFFS, activating sprinklers by means of thermal destruction of a bulb, is ineffective in a given room, the feasibility of forced AFFS activation using a differential heat detector responding to the temperature rise in a room may be considered. The ratios, thus obtained, are applied to identify the acceptable height of premises protected by the AFFS equipped with such detectors. Problem solutions, including the identification of the reason for the ineffective operation of the AFFS, examination of the AFFS in operation, and provision of recommendations to designers, are demonstrated using the exhibition hall as an example.Conclusions. The above-mentioned problems are resolvable with the help of Appendix B to new Construction Regulations 485.13130.2020 and the above models.

Subway Station Fire Prevention System Safety Analysis

2013 ◽  
Vol 405-408 ◽  
pp. 1861-1864
Author(s):  
Ruo Jun Wang ◽  
Bin Jiang ◽  
Yan Ying Xu
Keyword(s):  
Control System ◽  
Sprinkler System ◽  
Simulation Software ◽  
Subway Station ◽  
Fire Prevention ◽  
Smoke Control ◽  
System Safety ◽  
Prevention System ◽  
Automatic Sprinkler ◽  
Smoke Control System

Fire prevention system of subway station plays an important role in ensuring passenger safety. The Shenyang Youth Street subway station fire prevention system safety was studied, applying performance-based fire protection design analysis method, using of FDS simulation software on the station fire prevention safety system for the calculation and analysis. Three working conditions were set when subway fire happens. Fire smoke flow characteristics and the distribution of temperature, CO concentration and visibility were analyzed and compared. The results show that the automatic sprinkler system and smoke control system have great effect on the preventing spread of fire. In the automatic sprinkler system and smoke control system conditions, fire hazards have not reached the standards of passengers tolerance.

scholarly journals Study on Feasibility of Automatic Sprinkler System Applied in Underground Tunnel

2013 ◽  
Vol 52 ◽  
pp. 79-87 ◽  
Author(s):  
Yan-li Deng ◽  
Xiao Mi ◽  
Shu-min Zhu
Keyword(s):  
Sprinkler System ◽  
Underground Tunnel ◽  
Automatic Sprinkler
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