License Verification System (LVS)

*Important Update: Effective June 20, 2023, all existing ISMP system users (NSTS, WBL, or LVS) using One-Time Passwords (OTP) to access the systems will be required to create a new password in place of the current 4-digit PIN for accessing the systems. Access to the ISMP systems will be temporarily suspended until a new password is set up by June 20th. To set up your new password, please follow the step-by-step instructions provided in the email sent to all users. If you haven't received the email or need further assistance, please contact the ISMP Help Desk at ISMPHelp.Resource@nrc.gov or call us at 877-671-6787.

As a key component of the Integrated Source Management Portfolio (ISMP), the License Verification System (LVS) is envisioned as a "national verification system" that will ensure that only authorized licensees obtain radioactive materials in authorized amounts. Deployed in May 2013, LVS is an integrated service designed to provide access to license information maintained by the U.S. Nuclear Regulatory Commission (NRC) and Agreement States. Specifically, this system brokers information stored in the Web-Based Licensing (WBL) System and National Source Tracking System (NSTS). In so doing, LVS enables authorized licensees to verify certain information about licensees authorized to possess, use, or ship radioactive materials. In that way, the system allows licensees to confirm that (1) a license is valid and accurate and (2) a licensee is authorized to acquire quantities and types of radioactive materials being requested. For additional details, see the following pages:

Page Last Reviewed/Updated Friday, May 26, 2023

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