本文描述了加拿大和美国的实地研究，评估了住宅中的减压、回拖和泄漏，并吸收了这些研究的结果，以确定其集体影响。试验方法包括（1）评估可能发生回拖/泄漏的可能性的诱导试验和（2）确定是否确实发生持续回拖/泄漏事件的连续试验。尽管诱导试验产生了相当大一部分“阳性”（即，被认为容易发生回拖或泄漏的住宅），但更严格的连续试验表明，具有重大泄漏的回拖事件非常罕见。此外，诱导试验往往无法预测那些通过持续监测显示的回溯情况。作为泄漏指示器的温度传感充满了不确定性。持续监测通风燃烧装置附近的通风压力和燃烧产物是可靠识别泄漏的唯一已知方法- 俯卧住宅。文中给出了连续监测具体参数的建议。单元:干燥:研讨会论文，大西洋城，2002年

This paper describes Canadian and U.S. field studies assessing depressurization, backdrafting, and spillage in residences and assimilates results from these studies to determine their collective implications. Test methods include (1) induced tests to assess the possibility that backdrafting/spillage might occur and (2) continuous tests to determine whether sustained backdrafting/spillage events do occur. Although the induced tests have yielded a substantial fraction of "positives" (i.e., residences thought to be prone to backdrafting or spillage), the more rigorous continuous tests indicate that backdrafting events with significant spillage are quite rare. Moreover, the induced tests often fail to predict those backdrafting cases that are indicated by continuous monitoring. Sensing of tempera-ture as a spillage indicator is fraught with uncertainty. Continuous monitoring of vent pressures and combustion products near vented combustion appliances is the only known method for reliably identifying spillage-prone residences. Recommendations for specific parameters to be monitored continuously are provided in the paper.Units: SI