ISO 22291-2022 pdf free download – Safety requirements for wetlaid- nonwoven machinery.
5 General safety requirements and/or protective/risk reduction measures
5.1General
This subclause contains safety requirements and/or protective/risk reduction measures to be takenin relation to significant hazards related to wetlaid-nonwoven machinery.Machinery shall complywith the general and specific safety requirements and/or protective/risk reduction measures of thisdocument.
Where the means of reducing the risk is by the arrangement of the installed machine or a safe systemof working the machine, the manufacturer shall give a detailed description of this in the instructionshandbook.
Machinery shall comply with the safety requirements and/or protective/risk reduction measures ofthis clause. In addition, the machine shall be designed according to the principles of lS0 12100:2010 forrelevant but not significant hazards which are not dealt with by this document.
5.2Safety requirements for the different “phases of life” of wetlaid-nonwovenmachines
The safety requirements given in Clauses 5 and 6 apply to the use and maintenance of the machine/machine sections. For other phases in the life of a machine, see Clause 8.
5.3Safety requirements for design/risk minimization
A design concept for the machine and/or its mechanisms which does not inherently create a hazard bywetlaid-nonwoven machines shall, as far as possible, be adopted.
The technical guidelines on inherently safe design in accordance with IS0 12100:2010,6.2, shall apply.For risk minimization on wetlaid-nonwoven machines, the “strategy for risk assessment and riskreduction” cited in ISo 12100:2010,Clause 4, shall apply.
The target of risk reduction can be achieved by an elimination of hazards or by separate or simultaneousreduction of each of the two elements determining the risk involved:
– probability of occurrence of harm;
– the severity of that harm.
The “three-step procedure” described in ISo 12100:2010,6.1, shall always be observed:- Step 1: Inherently safe design measures;
— Step 2: Safeguarding and/or complementary protective measures;
— Step 3: Information for use.
Guards and safety devices used to reduce risks from wetlaid-nonwoven machines shall conform to the requirements of the standards given in Tables 2 and 3.
5.4Safety requirements for fitting of parts
Measures shall be provided to prevent a part from being fitted incorrectly (e.g. using shape orconfiguration to physically prevent incorrect installation). When this is technically not possible, theparts shall be clearly marked.
5.5 Workplaces, means of access, walkways, passageways/access to elevated operatingpositions and servicing points
5.5.1 For operating, make-ready, troubleshooting as well as maintenance operations, work platformsincluding their access stairs and passageways shall be provided, if necessary. Work platforms shallhave adequate slip resistance and stability, protection against persons falling off as well as protectionagainst mechanical and chemical effects including hazards from corrosion in the wet section.Platformsshall be designed for a surface load of at least 5 0o0 N/m2.
5.5.2 Access to stationary work platforms shall beselected and designed accordingto the specificationgiven in ‘Table 4.The normal type of access to be provided is type 1.Type 1 access has pitch angles ofbetween 30° and 45°.
Where type 1 access cannot be used for production reasons, type 2 access shall be used or, wheretype 2 is also not possible for technical reasons, type 3 access can be selected. Technical reasons can,for example, exist where:
a) access stairs would unduly restrict the passage;
b)a connection is required between two adjacent workplaces of different heights;
c)stairs would impede access to the machine for trouble shooting.
For safe threading on any kind of access facility, steps are required to have a uniform height and depth,including the first and the last step.
The maximum height of type 1 and type 2 access stairs shall be 4,00 m.Higher stairs shall be providedwith an intermediate platform.ISO 22291 pdf download.