ASME NOG-1 – 2010 pdf download.Rules for Construction of Overhead and Gantry Cranes (Top Running Bridge, Multiple Girder).
1144 Humidity (a) The purchase specification shall specify the humidity conditions in the area where the crane operates. (b) The crane shall be designed to withstand the effects of the specified humidity, or the limitations of the crane’s design concerning the humidity condition shall be specified by the manufacturer. 1145 Chemical (a) Spray Systems (1) Ifthe crane may be subjectto any spray systems, then the chemistry of the spray shall be specified in the purchase specification. Any restrictions on the use of materials due to the effects of the spray shall also be specified. Specifically, where a corrosive spray is present the possibility of H 2 generation exists and, therefore, the use ofexposed aluminum, magnesium, galvanized steel, and zinc is to be minimized. (2) The crane shall be designed to withstand the effects of the specified spray and shall not use the speci- fied restricted materials. Any limitations of the crane’s design concerning the spray condition and the use of any restricted materials shall be specified by the manu- facturer prior to the manufacture of the crane. (b) Pools (1) If the crane’s load block and wire rope are to be immersed, then the chemistry of the pool shall be specified in the purchase specification. Requirements for the materials and lubricants of the load block and wire rope shall also be specified to insure compatibility with the pool chemistry. In reactor and fuel pools, the lubri- cants shall basically be non-water-soluble and shall be free of halogenated compounds, halogens, mercury, and other deleterious materials. (2) Load blocks and wire ropes that are to be immersed shall be lubricated with a lubricant that meets the specified lubrication requirements. Any limitations of the crane design concerning the pool chemistry and lubrication requirements shall be specified by the manu- facturer.
1150 Definitions acceptance criteria: specified limits placed on characteris- tics of an item, process, or service defined in codes, standards, or other required documents. alligatoring: see checking. appointed: assigned specific responsibilities by the employer or the employer’s representative. approval: an act of endorsing or authorizing, or both. appurtenance: a part that is attached to a component that has been completed. as-built data: documentation describing a complete item. audit: a planned and documented activity performed to determine by investigation, examination, or evaluation of objective evidence the adequacy of and compliance withestablishedprocedures,instructions,drawings,and other applicable documents, and the effectiveness of implementation. An audit should not be confused with surveillance or inspection activities performed for the sole purpose of process control or product acceptance. audit, external: an audit ofthose portions ofanother orga- nization’s quality assurance program not under the direct control or within the organizational structure of the auditing organization. audit, internal: an audit of those portions of an organiza- tion’s quality assurance program retained under its direct control and within its organizational structure. authorized: appointed by a duly constituted administra- tive or regulatory authority. auxiliary hoist: see hoist, auxiliary. barrier: a flexible material designed to withstand the penetration of water, water vapor, grease, or harmful gases. blisters: bubble-like protrusions formed in a cured, or nearly cured, coating film; see ASTM D 714-56 for photo- graphic examples. boom, gantry crane: an extension of the trolley runway, which may be raised or retracted to obtain clearance for gantry travel.
brake, emergency: a brake for bridge and trolley that is released during normal operation and arranged to apply a retarding force when initiated by the operator during an emergency, or to automatically apply a retarding force upon loss of power. brake, mechanical load: an automatic type of friction brake used for controlling loads in a lowering direction; this unidirectional device requires torque from the motor to lower a load but does not impose any additional load on the motor when hoisting a load. brake, parking: a brake for the bridge and trolley that may be automatically or manually applied in an attempt to prevent horizontal motion by restraining wheel rotation. brake, service: a brake for bridge or trolley used by the operator, during normal operation, to apply a retarding force. bridge: that part of a crane consisting of two or more girders, trucks, end ties, footwalks, and drive mecha- nism, which carries the trolley or trolleys. bridge travel: the crane movement in a direction parallel to the crane runway. bubbles: gas pockets that rise through the wet coating film to the surface. An example of a bubble can be observed on runs shown in Fig. 10-8 of the ASTM Man- ual of Coating Work. bumper (also known as buffer): a device for reducing impact when a moving crane or trolley reaches the end of its permitted travel, or when two moving cranes or trolleys come into contact. This device may be attached to the crane, trolley, or runway stop. cab: the operator’s compartment on a crane. cab-operated crane: see crane, cab-operated.