ASME B30.1-2020 pdf download
ASME B30.1-2020 pdf download.Jacks, Industrial Rollers, Air Casters, and Hydraulic Gantries.
load point: the primary point of load application estab- lished by the jack manufacturer. longitudinal:the horizontal directionparallel to the length of the gantry system track. low-liftaircaster: a fabricated module thatcontains a load support plate, a landing pad, and an air bladder that provides approximately half the effective lift height of a high-lift air caster and requires contact with the oper- ating surface for inflation. mechanicaljack:ajackusinganymeans otherthanfluid to move the load. module structure (air caster): the load support platform that interfaces between the load and the air bladder. normal service: service that involves handling of loads within the rated load. overload: any load greater than the rated load. overtravel: movement beyond maximum travel (mechan- ical jack) or stroke (hydraulic jack) for which the jackwas designed. ply separation: a delamination of at least two layers of rubber and/or reinforcement material. qualified person: a person who, by possession of a recog- nized degree in an applicable field or certificate ofprofes- sional standing, or who, byextensive knowledge, training, and experience, has successfully demonstrated the ability to solve orresolve problems relatingto the subjectmatter and work.screw extension: a device that increases the hydraulic jack’s length. self-contained jack: a hydraulic jack whose hydraulic reservoir and pump are contained within the jack’s housing. severe service: service that involves normal service coupled with abnormal rigging or operating conditions. shall: a word indicating a requirement. should: a word indicating a recommendation. side shift: lateral movementofa suspended load along the header beams of a telescopic hydraulic gantry system.
single-acting hydraulic jack: a jack that is extended using hydraulic pressure and retracted by release of the hydraulic pressure. special service: service that involves operation other than normal or severe that is identified by a qualified person. strand jack: hydraulic cylinder(s) configured to sequen- tially grip and release single or multiple strands to move a load. strand jack system: one or more strand jacks, strands, anchors, a hydraulic power unit, control console, hoses, rigging, and accessories required to guide and manage the strands to move a load. stroke: linear extending or retracting movement of the hydraulic jack (Chapter 1-2) or gantry leg (Chapter 1-6). telescopic hydraulic gantry leg: a structural base that is supported on wheels or a frame and that has one or more vertical lift cylinders or boom. telescopichydraulicgantrysystem: two or more telescopic hydraulic gantry legs, a hydraulic power unit, control console, hoses, and one or more header beams that span between the legs. travel: linear extending or retracting movement of the mechanical jack (Chapter 1-1); horizontal movement of the telescopic hydraulic gantry system along the track (Chapter 1-6). tube guide: component of a strand jack that reduces the unsupported length of strand inside the jack to decrease the occurrence of birdcaging inside the jack.The Site Supervisor’s responsibilities shall include the following: (a) ensuring that the LHE meets the requirements of the appropriate chapter prior to initial site usage (b) determining if additional regulations or require- ments are applicable to LHE operations (c) ensuringthataqualifiedpersonis designatedas the LHE Director (d) ensuring thatLHE operations are coordinated with otherjobsiteactivities thatwill be affectedbyorwill affect LHE operations (e) ensuring that the area for the LHE is adequately prepared. The preparation includes, but is not limited to, the following: (1) access for the LHE and associated equipment (2) sufficientroom to assemble and disassemble the LHEhe LHE Operatorshall be responsible forthe following listeditems. TheLHE Operatorshall notbe responsible for hazards orconditions thatare notunderhis directcontrol and that adversely affect the LHE operations. Whenever the LHE Operator has doubtas to the safetyofLHE opera- tions, the LHE Operator shall stop the LHE’s functions in a controlled manner. LHE operations shall resume only after safety concerns have been addressed and the conti- nuation of the operation is directed by the LHE Director.
