ASME HRT-1:2016 pdf free download

ASME HRT-1:2016 pdf free download Rules for Hoisting, Rigging, and Transporting Equipment for Nuclear Facilities
4 DESIGN REQUIREMENTS4.1 General
This section describes design criteria that are appro-priate for most applications covered by this Standardand thatare recommended for general use.lf these criteriaare not appropriate for a specific application, the engineerresponsible shall select and document the justification forappropriate criteria.Load-handling equipment shallcomply with all applicable standards.If other applicablestandards are more stringent than this Standard, the morestringent shall govern.
Hoisting. rigging, and transporting equipment that is tobe used exclusively during the facility construction phaseshall be designed in accordance with paras.4.2 through4.4or, alternatively, in accordance with accepted industry orconsensus standards applicable to the type of handlingequipment used.
The organization responsible for the design shall estab-lish a program for ensuring that the handling equipmentconforms to the design requirements of the applicableportions of this Standard.
4.2 Standard Manufactured Components
The standard manufactured components selected shallbe structurally, mechanically, and electrically capable ofsafely performing the intended operations.They shall bedesigned to conform to accepted industry standards.
4.3 commercial Standard Handling EquipmentThe commercial standard handling equipment selectedshall be structurally,mechanically, and electricallycapable of safely performing the intended operations.The design shall conform to accepted industry standardsand appropriate consensus standards.
4.4 Special Designed Equipment
Special designed equipment shall be structurally,mechanically,and electrically designed to safelyperform the intended operations.Standard manufacturedcomponents or commercial standard handling equipment,or elements thereof,incorporated into the final systemshall meet the requirements of paras. 4.2 and 4.3.
4.4.1 Structural Design of Equipment. structuraldesign of the equipment,except as noted in (aJthrough 0). shall be in accordance, as applicable, withthe latest accepted editions of ACI 318.AISC 325,andthe AITC Timber Construction Manual.
a] Equipment components shall be designed for theappropriate combination of vertical and horizontal loads.(b) The effects of seismic activity need not be includedin combination with lifting or transporting operationsduring construction.For handling operations at an oper-ating nuclear facility,seismic activity shall be considered ifspecified by the owner.
(cy winds in excess of 50 mph(80.5 km/h) normallyneed not be considered in combination with lifting ortransporting operations as these operations are normallysuspended before winds exceed 5o mph[R0.5 km/h]. ifhistorical wind data indicate the likelihood of operationsoccurring during winds greater than 50 mph [80.5 km/h).such data shall be used as the basis of design.ASCE/SEI 7shall be used to determine appropriate wind loads.Iftheseforces have not been considered in design,lifting andtransporting activities shall be suspended before windsreach 50 mph(80.5 km/h).
dy Special designed equipment normally is designedfor a limited number of operations. Fatigue factorsshall be included where applicable.
(e] vertical impact shall be considered in the design.and selection of loads shall be supported by analysis.In no case shall vertical impact load be less than 10%of maximum handled load,excluding test load.
Longitudinal and transverse horizontal forces shallbe determined by the maximum acceleration or decelera-tion that can be delivered by the complete hoisting ortransporting system, the maximum grades or slideslopes encountered, maximum out-of-plumb lift, wind,and similar loads. In no case shall longitudinal or trans-verse horizontal forces be less than 2% of maximumhandled load.
lg] For the entire system considered as a whole, theratio of failure stress to calculated stress shall be noless than 1.67 for ductile steels and similar materialsthat demonstrate a distinct yield point, but never lessthan 2.5 when compared with the ultimate stress.Thisminimum ratio shall exist after considering suchfactors as unequal load distribution, stability, slendernessratios, and joint efficiencies.
h] Calculated stress developed by handling the combi-nation of dynamic test load and vertical impact, plus long-itudinal or transverse horizontal loads, if applicable, shallnot exceed 133% of allowable stress.
(a] Nondestructive examinations to be performedduring manufacture and the acceptance criteria forthese examinations shall be specified by the responsibledesign organization.Particular attention shall be given tolamellar tearinghighly restrained connections,and weldsjoining load-carrying members.