A method includes providing a ceramic matrix composite (CMC) seal arc segment that has radially inner and outer sides, attaching an abradable layer on the radially outer side of the CMC seal arc segment, providing a carrier to support the CMC seal arc segment, the carrier including a ridge, and sliding the CMC seal arc segment relative to the carrier such that during the sliding the ridge cuts a groove into the abradable layer, the ridge remaining disposed in the groove to thereby provide a labyrinth seal that partitions the cooling cavity between the carrier and the CMC seal arc segment into sub-cavities.

The present invention features a flood damage prevention apparatus having a modular equilateral triangular prism enclosure with an interlocking system used to interlock and position additional modules of the apparatus during flood damage prevention deployment. The interlock system enables additional modules of the flood damage prevention apparatus to be locked in position. Each module may be protected from flood debris damage by way of a protective covering over each enclosure. The apparatus may be filled with fluid via a seal tight opening located on the surface of the enclosure which in turn may be closed using a seal tight apparatus.

There is provided an apparatus for absorbing or converting energy from a moving body of water. The apparatus comprises an energy capture element (3) which, in use, moves in response to movement of the body of water in which the energy capture element (3) is placed, and an elongate guide element (1) defining a guide path along which the energy capture element (3) can move. The energy capture element (3) is a volume. In use, the energy capture element (3) and the guide element (1) are arranged so that the energy capture element (3) moves along the guide path in a substantially horizontal plane in response to differences in water pressure along a length of the energy capture element (3) parallel to the guide path and in response to movement of the body of water surrounding the energy capture element (3).

The present invention features a flood damage prevention apparatus having a modular equilateral triangular prism enclosure with an interlocking system used to interlock and position additional modules of the apparatus during flood damage prevention deployment. The interlock system enables additional modules of the flood damage prevention apparatus to be locked in position. Each module may be protected from flood debris damage by way of a protective covering over each enclosure. The apparatus may be filled with fluid via a seal tight opening located on the surface of the enclosure which in turn may be closed using a seal tight apparatus.