What type of Personnel Security Investigation (PSI) is required for Chemical PRP?

The correct choice for the type of Personnel Security Investigation (PSI) required for Chemical Personnel Reliability Program (PRP) is Access National Agency Check with Inquiries (ANACI).

The ANACI is specifically designed to determine an individual's eligibility for access to classified information or to occupy positions involved with sensitive national security duties. In the context of the Chemical PRP, it focuses on evaluating an individual's background to ensure that they are reliable, trustworthy, and have the necessary integrity to handle chemical materials that could have significant implications for national security.

While the other types of investigations, such as the Single Scope Background Investigation (SSBI) or Background Investigation (BI), serve important functions for different levels of access, the specific requirements for Chemical PRP align with the ANACI because it provides an adequate level of scrutiny for individuals in these roles, ensuring that they meet the necessary standards for personnel reliability in handling potentially hazardous materials. The Tier 1 Investigation, while also relevant, is less specific than the ANACI regarding the evaluation of personnel for Chemical PRP roles.