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Risk reduction methods applied in the process industry

A risky, industrial technology, applied in the direction of electrical testing/monitoring, etc., to achieve good technical effects

Active Publication Date: 2016-10-19
CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The main problem to be solved by the present invention is that in the prior art, there is no quantitative risk assessment of safety instrumented systems through inspection and testing methods for petrochemical equipment, and the problem of determining the SIL level of safety integrity

Method used

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  • Risk reduction methods applied in the process industry
  • Risk reduction methods applied in the process industry
  • Risk reduction methods applied in the process industry

Examples

Experimental program
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Embodiment 1

[0036] The ethylene plant is a large-scale chemical plant that is flammable, explosive, and highly toxic. The production process has the characteristics of complex process flow, high technical requirements, and high risk. Once there is negligence in management and operation, accidents will occur. With the extension of the operating life of the device, the expansion of the production scale, the increase of the complexity of the process, and the existence of objective factors such as the aging of equipment and instruments, the safe production of the device becomes more important.

[0037]The ethylene plant adopts a two-head and one-tail process, that is, two sets of cracking furnaces, a quenching system, a cracking gas compression system, and a separation system. The raw naphtha is cracked in the cracking furnace, and the cracked high-temperature cracked gas enters the compression unit for cooling, and then passes through the separation unit for component separation. In this pap...

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Abstract

The invention relates to a risk reduction method applied in the process industry, which mainly solves the problem in the prior art that there is no quantitative risk assessment of the safety instrument system and the determination of the safety integrity SIL level for petrochemical equipment through inspection and testing methods. The present invention adopts a risk reduction method applied in the process industry, and determines the optimal inspection test according to the average dangerous failure rate Fd of the safety instrumented system SIS and the required frequency d of safety instrument functions required to perform safety functions during start-up. period T, and then determine the average safety ineffectiveness SU=1 / 2×Fd×T, and finally determine the SIL level of safety instrumented functional safety integrity; it is characterized in that the technical scheme of T<2 / (d+Fd) effectively solves the This problem can be used in risk reduction analysis in the process industry.

Description

technical field [0001] The present invention relates to a risk reduction method applied in the process industry. Background technique [0002] In each of our social activities, there are certain risks. It is impossible for us to completely eliminate these risks, but we use some methods to reduce the frequency of risks and the severity of risks, so as to reduce the risks to our acceptable level. Level. One way to reduce risk in the process industry is through verification testing of safety instrumented systems. Simply put, all industrial processes have inherent risks which, sooner or later, will lead to accidents. The acceptable level of risk is defined by the frequency of accidents and the severity of consequences, and the analysis industry process is established by the acceptable level of risk. When the severity level of accident consequences is not acceptable, the frequency of accidents needs to be reduced. The degree of risk reduction required is defined through caref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 曹德舜
Owner CHINA PETROLEUM & CHEM CORP QINGDAO RES INST OF SAFETY ENG