barrier layer definition

barrier layer means a continuous horizontal layer of natural or synthetic materials through which the movement of liquid is prevented or greatly restricted;
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Related to barrier layer

  • Barrier means Barrier Level x R (initial).

  • Firefighter means any regular, paid or volunteer, member of a lawfully constituted fire department of a municipal corporation, township, fire district, or village.

  • COVID-19 symptoms means fever of 100.4 degrees Fahrenheit or higher, chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting, or diarrhea, unless a licensed health care professional determines the person’s symptoms were caused by a known condition other than COVID-19.

  • explosive actuated fastening device means a tool that is activated by an explosive charge and that is used for driving bolts, nails and similar objects for the purpose of providing fixing;

  • Hot Weather Alert means the notice provided by PJM to PJM Members, Transmission Owners, resource owners and operators, customers, and regulators to prepare personnel and facilities for extreme hot and/or humid weather conditions which may cause capacity requirements and/or unit unavailability to be substantially higher than forecast are expected to persist for an extended period.