Patent ID: 7992357

Claim:
A safety equipment for protecting a civil engineering work with an external pre-stressing cable guided into an orifice through an element or wall of said civil engineering work, the safety equipment comprising: a hammer part ( 11 ) attached to the cable ( 7 ) and spaced from a mouth of the orifice; and at least one energy absorption device ( 12 ) interposed on the cable ( 7 ) between the hammer part ( 11 ) and the mouth of the orifice and having an absorption capacity configured to enable the absorption device to undergo a deformation upon application of a controllable load exerted by the cable upon an end of the device ( 12 ) via the hammer part ( 11 ), wherein a maximum value of the controllable load is smaller than a fastening load of said hammer part ( 11 ), said fastening load being a load exerted by the cable upon the hammer part ( 11 ) causing the hammer part ( 11 ) to become unfastened from said cable, and wherein said deformation irreversibly and rapidly degrades an energy of the cable released with the application of the controllable load.