PCIVPittsburgh Council for International Visitors
PCIVPrimary Containment Isolation Valve
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PCIV then relates changes in concentration peak to volume of release.
The opposite effect was seen at UpClassN where PCIV was 136 ppb/L for Release 1 and 74 ppb/L for Release 2.
However the increase in PCIV of 99% corresponded to an increase in exposure of 212%.