OSI Systems, Inc. said Tuesday that Rapiscan Systems, a subsidiary of the Hawthorne-based company, received $13.2 million in contract orders from the Transportation Security Administration as a follow-up to an initial grant this summer.

The order was for two X-ray systems and peripheral equipment orders. It comes on the heels of an $800,000 grant awarded earlier this summer from the TSA for the development, testing and piloting of software to network security equipment at 450 airports throughout the U.S.

Rapiscan Systems will implement the software throughout its installed base of checkpoint X-ray systems. The project should be complete by the end of the fiscal year.

The system designed to provide more accurate and timely information from metal detectors, X-ray machines and explosive detection systems, allowing users quicker threat assessment and identification, Rapiscan said.

Shares in OSI rose 77 cents to $21.09 in early trading Tuesday.