Passive System

Term · Environment · MLC-T-ENV-020362

1. Short for passive sub-slab depressurization system. Features to reduce radon levels by utilizing barriers to radon entry and stack effect reduction techniques and the installation of a PVC pipe running from beneath the slab to the roof. Works by using natural pressure differentials between the air in the pipe, and the rest of the home and the outside air.

2. A system sensing only radiation emitted by the object being viewed or reflected by the object from a source other than the system.

Table 1. Record
Identifier	MLC-T-ENV-020362
Field	Environment
Subject	Air
References	RRNC Glossary of Terms; NASA Earth Observatory Glossary

Record as JSON

{
  "id": "MLC-T-ENV-020362",
  "term": "Passive System",
  "field": "Environment",
  "definition": "1. Short for passive sub-slab depressurization system. Features to reduce radon levels by utilizing barriers to radon entry and stack effect reduction techniques and the installation of a PVC pipe running from beneath the slab to the roof. Works by using natural pressure differentials between the air in the pipe, and the rest of the home and the outside air.\n\n2. A system sensing only radiation emitted by the object being viewed or reflected by the object from a source other than the system.",
  "subject": "Air",
  "references": [
    "RRNC Glossary of Terms",
    "NASA Earth Observatory Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/passive-system/"
}

Record 20,362 of 30,736 in Environment terminology (MLC-0121). Request the full dataset.