Portable Small Article Monitor QA 2.pdf
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- Attached to
- Portable Small Article Monitor for Shipboard Use
- Solicitation number
- FMP-NNL-0043
- Issued by
-
Department of Energy
About this file
This is a Questions and Answers document for the Portable Small Article Monitor Solicitation that clarifies technical requirements and expectations for detecting radiological contamination.
Design Requirement 9 establishes a detection threshold of 450 picocuries (pCi) or 1000 disintegrations per minute (dpm) of Cobalt-60 within 120 seconds, based on NAVSEA/NNPP free release criteria for uncontrolled areas. Design Requirement 11 requires isotopic analysis capability to identify whether detected contamination is Co-60 or another radionuclide. The government clarifies that providing a general energy range is sufficient rather than requiring full radionuclide identification. The isotopic analysis need not be completed within the initial 120-second measurement window; additional time may be used automatically in the background following contamination detection, with a simple "Please Wait. Analyzing" screen display being acceptable. The user interface must clearly indicate results within 120 seconds (green for clear, red for contamination detected). For contamination location identification, the government accepts identification of which detector(s) recorded the maximum count rate (top, bottom, front, back, or side), presented in a simple 3D diagram format when possible, similar to a Personnel Contamination Monitor display. This information is necessary for Radiological Controls assessment.
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Portable Small Article Monitor Solicitation Q&A 2
Q: For Design Requirement 9, the specification requires the ability to detect 450 pCi (1000 dpm) of Co-60 in less than 120 seconds. What is the 450 pCi limit based upon? Is this free release criteria?
A: Correct, this is free release criteria based on the NAVSEA /NNPP radiological limit for uncontrolled areas.
Q: Design Requirement 11. This spec requests “isotopic analysis” of the contamination. Please clarify your expectations. Is providing a general energy range of the contamination sufficient or are you looking for a radionuclide identification?
A: That is sufficient. We are trying to confirm with a certain degree of confidence whether the contamination is Co-60, or something else.
Q: Is this isotopic analysis required to be reported within the 120 second count time or will additional time be allowed for the analysis?
A: After the 120 second measurement is complete the user must know whether there is contamination present (i.e. green=clear, or red=contamination). Extra time may be used for the isotopic analysis if contamination is found. This should be done automatically and in the background for future Radiological Controls assessment. A simple “Please Wait. Analyzing.” screen (or similar) is sufficient.
Q: Design Requirement 11 requests the approximate location of the contamination. Is identification of the detector(s) detecting the maximum count rate (i.e., top, bottom, front, back, side) sufficient?
A: That is sufficient. Akin to a Personnel Contamination Monitor, on the Small Article Monitor the detector that caused the alarm, and the alarm level should be available for Radiological Controls assessment. This should be given, if possible, in a simple 3D diagram.
File details come from the government source that posted it. Updated .