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INOVISION

To: Document Control Desk, U.S. Nuclear Regulatory Commission
From: Inovision Radiation Measurements

Date: July 11, 2001

Re: 10 CFR Part 21 Report (Follow-up to Interim Report submitted May 11, 2001)

Component containing defect: Firmware in Type IIA 960 Systems with a Real Time Clock (RTC) integrated circuit, programmed for use in pulse counting applications, and equipped with the following controller modules:

• Model 960CD-220 (P/N 960CD-220-10)
• Model 960CD-221 (P/N 960CD-221-10)
• Model 960CD-223 (P/N 960CD-223-10)

Monitors utilizing ionization chamber detectors are not affected.

The above controllers were equipped with Real Timer Clock and additional firmware to control the RTC.

Formerly Victoreen and Keithley Radiation Measurements

Attachment