AS 5236.1:2021 pdf free download – Cranes-Limiting and indicating devicesPart 1: General

AS 5236.1:2021 pdf free download – Cranes-Limiting and indicating devicesPart 1: General.
This part of ISO 10245 specifies general requirements for limiting and indicating devices for cranes that are applicable to loads and motions, performance and environment. These devices restrict operation and/or provide the operator or other persons with operational information.
The specific requirements for the various types of crane are given in the other parts of ISO 10245.
It is emphasised that the safe and reliable operation of limiters and indicators depends upon regular
inspection and maintenance.
2 Normative references
The following referenced documents are indispensable for the application of this document, For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4306-1, Cranes — Vocabulary — Part 1: General
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4306-1 and the following apply.
3.1
anti-collision device
device used to prevent cranes or parts of cranes from colliding with a fixed load-lifting attachment when they are manoeuvred simultaneously In the same space
Note I to entry: A working space hmiter may perform the function of an anti-collision device In certain applications.
3.2
configuration
combination and position of structural members, counterweights. support or outrigger position, hook block reeving and similar items assembled, positioned and erected in accordance with manufacturers’ instructions and ready for operation
3.3
continuous warning
warning visually by means of either a flashing or uninterrupted light, or audibly by either a pulsing or uninterrupted sound, that persists throughout the time during which the condition being indicated exists
3.4
control station position limiter
device used on cranes having a control station that can be moved by powered movement to different positions, to prevent movement of the control station beyond specified limits
3.5
derricking limiter
device used to prevent the raising or lowering of a jib, boom, fly jib, A-frame or mast beyond specified limits
4.3.2.1 When the load on the crane exceeds the rated capacity, the rating capacity limiter shall override the controls of the crane to prevent any condition that will increase the overload.
For particular crane types, reference should be made to ISO 10245-2, ISO 10245-3. ISO 10245-4 or ISO 10245.5 for details of motions that will increase the overload.
4.3.2.2 The rated capacity limiter shall not prevent the crane operator from returning the controls to the “stop position nor from initiating actions that will move the crane to a reduced-loading or unloaded condition.
4.3.2.3 The rated capacity limiter, once triggered, shall continuously override the controls concerned until the overload has been removed and the relevant control lever has been returned to the neutral position.
4.4 Rated capacity indicators
4.4.1 Operating requiremenis
4.4.1.1 The rated capacity indicator shall give visual or audible warnings, or both, for all motions of the crane that induce a load In excess of the rated capacity as shown in the information supplied by the manufacturer for the particular crane.
4.4.1.2 The rated capacity indicator shall
a) for those cranes where the rated capacity varies with the position of the load, warn the crane operator when the rated capacity is approached.
b) warn the crane operator and persons in the danger zone when the rated capacity limiter Is activated.
c) for those cranes where a limiter override is provided, warn the crane operator and persons in the danger zone whenever the rated limiter has been overridden.
4.4.1.3 When the rated capacity is approached, the rated capacity indicator shall give a warning at a value which gives the crane operator time to react to the warning and prevent the crane from being overloaded.
For particular crane types, reference should be made to ISO 10245-2, ISO 10245-3. ISO 10245-4 or ISO 10245-5 for details of motions that will increase the overload.