解决关键止回阀的谜团

介绍

In the author’s experience conducting more than sixty American Petroleum Institute (API) Process Safety Site Assessment Program (PSSAP) assessments, critical check valve (CCV) inspection programs are one of the lowest scoring of all of the fixed-equipment mechanical integrity (MI) categories that are assessed. In fact, where a score of 75% meets expectations, CCV inspection programs score 42% on average. In an effort to help the industry improve CCV programs, this article discusses important aspects of a CCV MI program. Specifically, this article will discuss the what, why, where, how, when and who of CCVs, such as:

• 什么标准指定止回阀至关重要？
• 为什么CCV检查计划如此重要？
• 在过程单位中发现的CCV在哪里？
• 应该如何检查CCV？
• 应该检查CCV什么时候？
• 谁应该检查CCV？

这些问题和其他问题的答案应该对参与设施固定设备MI计划的人员的重视。下面列出了最常见的原因，最常见的原因在下面列出了CCV程序。

1. “我们将要解决它，但是我们还有很多其他的事情，我们只是没有时间实施CCV计划。”
2. “我们正在等待流程安全管理部门为我们提供CCV的名单。”
3. “We don’t have any CCVs because we are not allowed to take credit for them as a safeguard in a process hazard analysis (PHA) or as an independent protection layer (IPL) in a layer of protective analysis (LOPA), so therefore we have been told that we are not allowed to have CCVs.”
4. “API 570中的CCV检查是'应该'或'应该''？”
5. “我认为其他人对CCV计划负责。”

你熟悉这些声音吗？