结果表明：乙烯装置连续运行6年，其安全风险属于可容许风险。
The result shows that safety risk of 6 years' running is acceptable.
评价风险大小以及确定风险是否可容许的全过程。
Oerall process of estimating the magnitude of risk and deciding whether or not the risk is tolerable.
按风险极小化原则，计算可容许的评定标准，并对其灵敏度给以计算分析。
The permissible evaluation criterion will be calculated according to the risk-minimization principle. The sensitivity of the criterion will also be taken into analysis by calculation.
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