安全生命周期管理

The safety structure of complex process control systems is designed in multiple layers in order to ensure an equipment “event” is caught way before it starts.

This multi-tiered set up is based on Safety Instrumented Systems (SIS), which are the hardware and software controls on critical process systems. The SIS contains Safety Instrumented Functions (SIF), a specific control function used to achieve a Safety Integrity Level (SIL)—each of which is operating as a prevention method that is independent of any other method, otherwise know as Independent Protection Layers (IPL).

这些保护层的可用性对于工厂的运营至关重要，并且由行业法规规定。失败的结果是因为没有警报，例如，可能会导致关键的安全事件，可能会花费很多或造成伤害。结果，公司花费大量时间和精力来测量和检查SIF的响应时间。

The problem to date has been that IPLs are often managed using manual processes like spreadsheets, written procedures, process drawings, homegrown applications and even handwritten notes. This management process is not interoperable, not traceable and limited in functionality, which makes it problematic.

So problematic, as a matter of fact, that three ofPAS Inc.’sclients in the oil and gas and energy industry asked the Houston-based company to solve the problem. And it did.

This week, the company introduced PAS IPL Assurance, software that provides real-time predictive analytics on the health and availability of SIS, alarm management systems and other IPLs. In addition to managing operational risk, IPL Assurance reduces compliance costs by automatically reporting on the SIS performance during a demand on the safety system.

“We had an opportunity to help clients automate safety instrumented system tests on one hand, and we can [also] capture information and report it automatically, which makes audits and reports easier,” said PAS CEO Eddie Habibi.

IPL Assurance pulls data from a variety of sources and brings in events to report on the functionality of IPL, making sure the system is available and is working with high integrity. It delivers analytics in a dashboard to identify when a function fails or exposing when a bypass could be a security risk, for example.

IPL保证是入站的扩展，汇总可视化和验证操作界限（例如过程警报，安全仪器行程点，机械设计限制，正常操作Zonesetc。）作为PAS的一部分PlantState suite—which is designed to improve overall operator situational awareness.

For its part, IPL Assurance provides the following analytics, alert, and visualization features:

•SIF性能管理

• Testing and maintenance management

•对安全系统费率跟踪的需求

• Status of safety related alarms

• Safety system bypass management

• Safety and operational risk dashboard

Collectively, these features ensure the safety systems that manufacturers rely upon are available and the integrity of each system is reported. As a result, plant personnel can mitigate abnormal situations before they impact plant safety, reliability, and profitability.