【正文】 2) the value of the manufacturing proof force(s) applied。 g) the working load limit (WLL). NOTE. The manufacturer named on the certificate can be the fabricator of a welded sling or the assembler of a sling jointed by mechanical devices. Slings of welded construction In addition to the information given in the certificate shall include: a) the value of the manufacturing proof force(s) applied。 e) the nominal size of chain and grade mark 8。 c) the identification number or symbol of the sling。s certificate General Each assembled sling shall be provided with a dated certificate stating conformance to this Part of EN 818 and giving at least the following information: a) the name of the sling manufacturer or supplier including date of issue of the certificate and authentication。 to 60202。 to 60202。s name or symbol: e) the number of legs。 c) the grade of the sling, . 8。 b) the individual identification mark (related to the manufacturer 39。 to the vertical The following information shall be marked: a) the working load limit and the range of angles, . 16 t, 0202。s name or symbol. NOTE. The nominal size may be marked if required as an option. Multileg slings rated for a range of angles from 0202。 c) the grade of sling, . 8。 b) the individual identification mark (related to the manufacturer 39。 2) prEN 16771 to prEN 16774 for ponents of grade 8 for chain slings (see ). 7 Marking General Each sling shall be marked in pliance with this clause. The information specified in and shall be either: a) marked on a substantial metal tag as shown in the example given in annex D, or on a label permanently attached to the master link or to a link immediately adjacent to it。 or b) be examined visually by a petent person to ensure freedom from defects provided that the chain and each ponent have been certified as having been subjected to the manufacturing test as specified in: 1) EN 8181 and EN 8182 for short link chain of grade 8。 b 60202。 b 45202。 b 60202。 b 45202。 up to and including 60202。 up to and including 45202。s instructions, the unintentional disconnection of any ponent part cannot occur. Pearshaped links shall only be used if they have an integral joining device. Assembled mechanical joining devices shall have a working load limit not less than that of the chain(s) to which they are connected in a chain sling. The ponent parts of the chain sling shall ply with the requirements of except in respect of joining and intermediate links. Slings assembled by welding Pearshaped links shall not be used as terminals. Joining links and intermediate links shall have a working load limit not less than that of the chain(s) to which they are connected in a chain sling. The dimensions of joining links and intermediate links shall be such as to ensure adequate articulation with parts of the chain sling which they connect. The ponent parts of the sling shall ply with the requirements of . Endless slings The manufacture of an endless sling shall be either by the use of: a) a mechanical joining device。s certificate. Errors in fitting together of assemblies can also lead to premature failure and this Part of EN 818 contains dimensional requirements to allow correct fit. Those aspects of safe use associated with good practice are given in prEN 8186. Table 1 contains all the hazards which require action to reduce risk, identified by risk assessment as being specific and significant for chain slings grade 8. 5 Safety requirements Components of a chain sling Chain The chain shall ply with prEN 8182. Fed steel ponents Fed steel ponents, including mechanical joining devices, for use with grade 8 chain in the manufacture of chain slings shall conform to prEN 16771. Table 1. Hazards and associated requirements Hazards identified in annex A of prEN 1050 Relevan t clause of annex A of EN 2922 : 1991/A1 : 1995 Relevant clause/s ubclaus e of this Part of EN 818 Mechanical hazard due to inadequacy of strength 5 6 7 8 15 Errors of fitting hazard Page 5 EN 8184 : 1996 Links Master links and intermediate master links shall ply with prEN 16774. Lower terminal links shall ply with prEN 16774 except for those clauses relating to link dimensions. Joining links and intermediate links shall conform with prEN 16774 except for those clauses related to link dimensions. Lower terminal links, joining links and intermediate links shall satisfy the appropriate requirements of . Hooks Fed steel lifting hooks with latch shall ply with prEN 16772. Hooks not covered by these standards shall ply with . NOTE. The details of fed steel selflocking hooks are contained in prEN 16773, which is in the course of preparation. Design and construction Slings assembled with mechanical joining devices The assembly of the sling shall be undertaken in accordance with the chain manufacturer39。 Grade 8 Annex C gives an example of a designation system for chain slings. 2 Normative references EN ISO 9001 : 1994 Quality systems 208。 Grade 8 prEN 16774 Components for slings 208。 Grade 8 prEN 16772 Components for slings 208。 Principles of risk assessment prEN 16771 Components for slings 208。 Safety Part 6: Chain slings 208。 Safety Part 2: Medium tolerance chain for chain slings 208。 b) welding using short link grade 8 medium tolerance lifting chain conforming to EN 8182 together with the appropriate range of ponents of the same grade. NOTE. Instructions for use and maintenance of chain slings are covered by prEN 8186. The hazards covered by this European Standard are identified in clause