A rack rail is suspended into a silo from an opening formed in a ceiling portion of the silo and a lifting body is lowered into the silo along the rack rail from the opening. A work scaffold is built on the lifting body using a part carried into the silo from the opening, a worker connected to the work scaffold with a safety belt pokes and breaks down a granular powder in a state where a discharge port of a silo bottom portion is closed, the poked and broken down granular powder drops to a rat hole (or boring hole), the worker connected to the work scaffold with the safety belt adds a rack rail in a state where the rat hole is blocked with the granular powder, the discharge port is opened to discharge the granular powder stored in the passage, and then the work scaffold is lowered to the added rack rail.

A fall protection system includes a base assembly, a mast assembly, and a locking assembly adapted to lock the mast assembly with the base assembly. The locking assembly includes a first plate and a second plate. The locking assembly also includes a fixed member fixedly coupled to the second plate. The locking assembly further includes a locking pin including an elongate portion at least partially received within the fixed member and a first tab, the locking pin being movable relative to the fixed member between an engaged position and a disengaged position. In the engaged position, the first tab is at least partially received within a first groove such that the locking pin is engaged with the first plate. Further, in the disengaged position, the first tab is at least partially received within a second groove such that the locking pin is spaced apart from the first plate.

A fall protection system includes a base plate defining a first side and a second side defined opposite to the first side. The fall protection system also includes a mast assembly connected to the base plate proximate to the first side of the base plate. The fall protection system further includes a jib inclined with respect to the mast assembly and pivotably connected to the mast assembly. The fall protection system includes a counterweight connectable to the base plate proximate to the second side of the base plate.

A load bar having a straight pipe body disposed between two opposite end sections, wherein the pipe body has a radial cross section; and two end loops, each end loop having a radial cross section and being disposed on a different end section of the load bar, wherein the radial cross sections of the two end loops are parallel with each other and perpendicular to the radial cross section of the pipe body. The load bar may be implemented within the harness adapter connector portion of a harness adapter system in order to prevent the compressive force from an attached load from being exerted on a secured lineman. Utilization of this load bar may increase the safe load limit while securing a lineman from 500 lbs. to 2000 lbs., effectively broadening the application for the harness adapter system. The load bar may also be used with lighter loads to prevent lineman discomfort.

A safety climb attenuation apparatus provides a more robust and visually inspectable apparatus for climbing safety. In an upper bracket, a pivot arm is attached to a base that is disposed upon a structure. The upper bracket includes an attenuation member such as an elastic bushing, mounted on the pivot arm or the base, that resists pivoting of the pivot arm relative to the base when a safety cable attached to the pivot arm causes the pivot arm to pivot. In a lower bracket, a similar attenuation member is attached to a base disposed on the structure, with an anchor bolt connecting the cable to the attenuation member so that the attenuation member resists upward movement of the cable.

The invention relates to a brake plate for a rope grab for rope climbing, comprising: a first section for supporting a rope on the brake plate, said first section being a first arc of a first circle with a first radius, and a second section for supporting the rope on the brake plate, said second section being arranged adjacently to the first section, wherein the brake plate is characterized in that the second section is a second arc of a second circle with a second radius, and the second radius is larger than the first radius. The invention additionally relates to a rope grab for rope climbing, comprising the brake plate, and to a method for retrofitting a rope grab with the brake plate.

A fall protection system includes a mast assembly including a fixed mast section, a movable mast section, and a winch assembly. The fall protection system further includes a locking mechanism adapted to lock the movable mast section relative to the fixed mast section. The locking mechanism includes a locking pawl connected to the winch assembly. The locking pawl is adapted to rotate between an engaged position and a disengaged position. The locking pawl engages with the fixed mast section in the engaged position to prevent relative movement between the fixed mast section and the movable mast section. The locking mechanism also includes at least one spring adapted to bias the locking pawl towards the engaged position. Further, the winch assembly is adapted to retain the locking pawl in the disengaged position against the biasing of the at least one spring based on a tension selectively applied by the winch assembly.

A cable holder and a running element for a cable system of an anti-fall device, wherein the cable holder is reversibly rotatably mounted and the axis of rotation of the cable holder is offset parallel to a cable.

A temporary cable horizontal lifeline (HLL) kit for fall protection includes a wire cable and a ratchet tensioner with adjustable length webbing that includes a first end portion with a first carabiner and a second end portion with a second carabiner. The kit further includes a first energy absorber, a first clamp and a second clamp, a first shackle and a second shackle, and a first end anchorage connector and a second end anchorage connector.

A fall protection cable system configured for installation of a roof on a steel building includes a starting support post, a final support post, and a support cable. The starting support post is configured for attachment to a first side of the steel building and has a bottom starting end configured to attach to the first side of the steel building and a top starting end extending above the roof. The final support post is configured for attachment to a second side of the steel building and has a bottom final end configured to attach to the second side of the steel building and a top final end extending above the roof on the second side. The support cable is configured to be connected at an elevated position above the roof of the steel building between the top starting end and the top final end.