ISO 21912-2021 pdf free download – Solid recovered fuels — Safe handling and storage of solid recovered fuels.
This document provides principles and requirements for safe handling, treatment and storage of solidrecovered fuels (SRF), prepared from non-hazardous waste, to be used for energy purposes. Thisdocument covers process stages from point of acceptance of material to point of delivery of SRF.
This document excludes fuels that are included in the scope of lSO/TC 238 Solid biofuels and ISO/TC 28Petroleum products and related products of synthetic or biological origin.
lt uses a risk-based approach to determine what safety measures are to be considered.
Although unloading and loading of e.g.vessels, trains or trucks are included, the safety issues followingthe loading and transport itself are not.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document(including any amendments) applies.
ISo 12100,Safety of machinery —General principles for design —Risk assessment and risk reductionISO 21637:2020, Solid recovered fuels — Terminology, definitions and descriptions
3Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 21637:2020 and thefollowing apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:-ISO online browsing platform: available at https://www.iso.org/obp
一IEC Electropedia: available at http://www.electropedia.org/
3.1Parts of the SRF process
3.1.1
baling
process of producing a compressed material bundle or package secured by wires, hoops, cords or similar3.1.2
belt conveyor
conveyor with an endless belt acting as a carrying and traction element
Note 1 to entry: There are several belt conveyor types, such as; troughed belt conveyor, deep troughed beltconveyor, pipe belt conveyor, walled belt conveyor, flat belt conveyor and radial conveyor.
3.1.3
belt feeder
shortened form of belt conveyor (3.1.2), normally running at slow speed, designed to extract or controlthe rate of flow of bulk materials from hoppers
[SOURCE:EN 620:2002+A1:2010,3.2.4]
3.1.4
box
storage with two or three walls3.1.5
bucket elevator
elevator for loose bulk materials with buckets as the carrying medium attached to a belt or chains asthe driving medium
Note 1 to entry: T’he bucket elevator consists of a strap forming belt, stretched vertically between a driving headpulley and a pulley of foot. Buckets are attached to the strap and the whole is enclosed in a metal frame.
Note 2 to entry:The foot of the elevator is equipped with a chute in which the buckets are filled by shovelling anda head shape suitable for evacuating grain by projection centrifugal.
[SOURCE:EN 618:2002+A1:2010,3.1.3 – modified: notes to entry were added]3.1.6
bunker
storage which is closed on four sides and reachable from the top3.1.7
chain conveyor
conveyor for loose bulk materials with a chain as the driving medium having attached flights or scraperflights moving the material “en masse” in an enclosing trough
3.1.8
chain reclaimer
machine for loose bulk materials with a chain as driving medium having attached flights or scraperflights moving the material in an open drop-in pit or drive over pit
3.1.9
conveyor system
number of linked conveyors with their ancillary equipment and control system[SOURCE:EN 620:2002+A1:2010,3.1 – modified: “control system” was added]3.1.10
crushing
mechanical reduction of particle size (3.3.4 ) by exerting mainly blunt deforming forces to a material[SOURCE: ISO 21637:2020,3.15]ISO 21912 pdf download.