Definitions for "HLW"
High level waste
High level (radioactive) wastes; classified in Cm 2919 as wastes in which the temperature may rise significantly as a result of their radioactivity, so that this factor has to be taken into account in designing storage or disposal facilities
Keywords:  tidal, moon, declination, highest, sun
higher low water. The highest of the low waters of any specified tidal day due to the declination Al effects of the Moon and Sun.