Abstract: In a penstock internal maintenance system, the penstock includes an inclined portion between upper and lower ends, the upper end arranged in an edifice including a water collecting chamber and a gate bearing structure allowing a gate to close the penstock, the gate bearing structure adjacent the water collecting chamber forming a vertical pit. The system includes a set of units assembled in an assembled configuration and separated in a dismounted configuration, the units including an anchor unit, a launching unit and a penstock inspection platform unit, the units in the dismounted configuration being enter the penstock through the gate bearing structure adjacent the water collecting chamber, the units are assembled when located in the penstock, the anchor unit slidingly received and retained in the gate bearing structure, the anchor unit having two lateral edges being guided and retained in two vertical lateral grooves of the gate bearing structure.

Abstract: A system and method for a scaffold deck with a fall arrest assembly is disclosed. The fall arrest assembly comprises a deck structure (102) and a rail assembly (122) for permitting an individual to tie-off in a manner that permits the individual with a range of motion along the deck structure. The fall arrest assembly further includes an uplift hook mechanism (120) connected to or otherwise installed on the deck structure such that the uplift hook mechanism is employed for both securing the deck structure to and releasing the deck structure from at least one supporting member. A plurality of deck hooks (118) connectable to or otherwise installed on the decking structure for connecting the decking structure to the supporting member is additionally provided. A deck latch assembly located connected to the uplift hook mechanism additionally facilitates connection of the deck structure to a second deck structure.

Abstract: A system and method for a scaffold deck with a fall arrest assembly is disclosed. The fall arrest assembly comprises a deck structure (102) and a rail assembly (122) for permitting an individual to tie-off in a manner that permits the individual with a range of motion along the deck structure. The fall arrest assembly further includes an uplift hook mechanism (120) connected to or otherwise installed on the deck structure such that the uplift hook mechanism is employed for both securing the deck structure to and releasing the deck structure from at least one supporting member. A plurality of deck hooks (118) connectable to or otherwise installed on the decking structure for connecting the decking structure to the supporting member is additionally provided. A deck latch assembly located connected to the uplift hook mechanism additionally facilitates connection of the deck structure to a second deck structure.

Abstract: A portable davit base for removable attachment to a rooftop davit pedestal having a mounting plate includes two opposed side plates and two metal transverse supporting members for mounting on the mounting plate and secured thereto with connector pins that extend underneath edges of the mounting plate on opposite sides of the davit pedestal. The opposed side plates have vertically spaced apertures for inserting davit mast supporting pins for pivotal mounting of a mast on the assembly. A davit arm connected to the mast is rigidly attached to the portable davit mounting assembly for use in suspending scaffolding over the side of a building.

Abstract: A portable davit mounting assembly and method for removable attachment to a rooftop pedestal and mounting plate. The portable davit base adaptor assembly is inserted into a mounting plate of a fixed davit pedestal and is secured with pins. The portable davit base adaptor assembly includes two opposed side plates and two metal transverse supporting members. The opposed side plates have apertures for inserting davit supporting pins and interlocking feet for inserting into mounting plate apertures. The transverse supporting members have holes for inserting pins to secure them to the pedestal mounting plate. The rooftop pedestal and mounting plate can be installed flush to the rooftop. A davit arm is rigidly attached to the portable davit base adaptor assembly for use in suspending scaffolding over the side of a building.