Layer of Protection analysis (LOPA) is a simplified quantitative tool for analyzing and assessing risk. LOPA was developed by user organizations during the 1990s as a streamlined risk assessment tool, using conservative rules and order of magnitude estimates of frequency probability and consequence severity. This Database is a benefit for employees of CCPS member comapnies. Full access requires login.


PERD: Process Equipment Reliability Database 

The PERD ERP tool allows a company to identify problems such as equipment failures leading to the greatest financial and safety consequences. PERD ERP is designed to allow efficient analysis by probing deeper into the reasons for failure, and allows the user to make decisions that can improve the performance. This can be finding and fixing outliers that are not performing well versus the mean or to help promote reliability growth.


Process Safety Incident Database

The Center for Chemical Process Safety (CCPS) developed the Process Safety Incident Database to collect, track and share important process safety incidents and experiences among project participants.


Process Safety Metrics

To continuously improve upon process safety performance, it is essential that companies in the chemical and petroleum industries implement effective leading and lagging process safety metrics. CCPS has filled this need through a diverse, international effort leading to the publication of recommended process safety metrics. View all of the recommended metrics and other important information in one place. 

Recommended Process Safety Metrics 

Process Safety Moments

The purpose of these presentations is to use past incidents to raise the hazard awareness of the broader chemical industry, to bring more detail than the Process Safety Beacon alone can provide and to allow discussion of the potential hazards, controls and safeguards at your facility.

Process Safety Moments

RBPS Resources Web Tool

This project aims to create a easily accessible web-based tool for each of the 20 Risk Based Process Safety elements. A central “hub” of free information of Process Safety information, tools, and resources. 

RBPS Web tool 

Chemical Reactivity Worksheet

The Chemical Reactivity Worksheet (CRW) is a free software program you can use to find out about the chemical reactivity of thousands of common hazardous chemicals, compatibility of absorbents, and suitability of materials of construction in chemical processes.

Chemical Reactivity Worksheet 

Reactivity Management Tool

The AIChE/CCPS no longer supports this software. We recommend you install the Chemical Reactivity Worksheet (CRW) instead.

Incidents involving uncontrolled chemical reactions continue to result in injuries, fatalities, economic loss and harms in industry. The chemical reactivity evaluation Tool (RMT) and the Help Guide that accompanies it can be used as an aid in identifying and evaluating chemical reactivity hazards so that they may be effectively avoided or controlled.

Reactivity Management Tool

Risk Analysis Screening Tool (RAST) and Chemical Hazard Engineering Fundamentals (CHEF) 

The RAST software and its associated CHEF documentation were developed through the collaborative efforts of volunteers from member companies of the Center for Chemical Process Safety (CCPS) and the European Process Safety Centre (EPSC). Special appreciation is extended to The Dow Chemical Company for donating RAST/CHEF for global use and for providing the resources to help modify the software and documentation such that companies can tailor the RAST software to meet their company-specific risk tolerance levels. It is sincerely hoped that companies using RAST and CHEF during their hazards evaluations and risks assessments will be able to improve their process safety performance.

Risk Analysis Screening Tool (RAST) 

Safe Work Practices (SWP)

Work place fatalities and injuries continue to occur with hot work incidents, nitrogen asphyxiations, confined space, line opening and other activities because of unsafe work practices. We need to make them more “human failure” resistant’.  This effort will likely save lives somewhere.This tool is designed to reach, and provide value to, a very broad audience including operations, maintenance and engineering personnel in the process industries (Chemical, petrochemical, electronics, natural gas and others). In addition to appealing to larger, more established member companies, this information has been tailored to also reach both large and small, domestic and international.

Safe Work Practices Tool