1、STDmBSI BS EN 1337-9-ENGL 1998 m lb21ibb7 Ob9bb 07“ m BRITISH STANDARD Structural bearings Part 9. Protection * * rn The European Standard EN 1337-9 : 1997 has the status of a British Standard ICs 91.010.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW 3s EN 1337-9 : 1998 BS
2、 EN 1337-9 : 1998 AmdNo. National fore word Date Text affected This British !iXanda,rd is the English ianguage version of EN 1337-9 : 1997, published by the European Committee for Standardization (CEN). The UK participation in its preparation was entrusted to Technical committee 3,522, Structurai be
3、arings, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the interpretation, or propads for change, and keep the UK interests informed; - monitor related inkrnationaJ and European developments and promulgate the
4、mintheUK The UK voted agajnst this standard at the CEN Formal Vote stage, but the analysis of voting, in accordance with CENKENELEC Internai Regdations Part 2 : Common rmlesfor standards wonk, resulted in a positive vote. In consequence, the document was accepted as a European Standard A list of org
5、anizations represented on this committee can be obtained on request to its secrem. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the secon entitled International Standards C
6、orrespondence Index, or by using the Fnd facility of the BSI Standards Electronic Catalogue. Additionai information Contrary to the advice given in paragraph 4 of the European foreword, this Part will come into effect before Parts 1 and 2. Compliance with a British Standard does not of itself confer
7、 immunity from legai obligations. This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 March 1998 Summary of pages This document comprises a front c
8、over, an inside front cover, the EN titie page, pages 2 to 6, an inside back cover and a back cover. Amendments issued since publication 0 BSI 1998 ISBN O 680 29428 6 STD-BSI BS EN 1337-9-ENGL 1778 Lb24bb7 Ob889b8 742 W EUROPEAN srmm NOFUVE EUROPENNE EUROP- NORM EN 1337-9 November 1997 ICs 91.010.30
9、 Descriptors: Civil engineering, bearing devices, protection, specifications, environments, dust, corrosion prevention, fire protection English version 53xwtudbem- Part9 Protection Appaseils dappui stnicturaux - Partie 9 Protection Lager im Bauwesen - Teil9 Schutz This European Standard was approved
10、 by CEN on 24 October 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipuiate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date iists and bibliographical references concerning such national st
11、andards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibfity of a CEN member into its own language and notified t
12、o the Central Secretariat has the same SWUS as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germanx Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United
13、 Kmgdom. European Committee for Smdardization Comit Europen de Normahation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1997 CEN - All righs of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1337-9 : 199
14、7 E Page 2 EN 1337-9 : 1997 Foreword This European Standard has been prepared by Working Group 5 of Technical Committee CENiTC 167, Structural bearings, the secretariat of which is held by UNI. The European Standard prEN 1337 StmcUml bmrings consists of the following 11 Parts: Part 1: GermTdignrUles
15、 Part 2 Slidingehwnts Part 3 Elast#nericbearings Part 4 RoLkrbearings Part 5 Potbearings Part 6: Roclcerbmrings Part 7: SphericaL and cylind*a PTFE earings Part 8: Guided bearings and restrained bearings Part 9 Protection Part 10: InspecEion and maintenance Part 11: kwrt, storage and installation Th
16、is Part 9 htection includes annex A (informative). Further to CENm 167s decision, Part 1 and Part 2 form a package of sandards and they come into force together, de the other Parts come into force separately after the pubiidon of Part 1 and Part 2. “his European Standard shall be given the status of
17、 a donai standard, either by publication of an identid text or by endorsement, at the latest by May 1998, and the latest by May 1998. According to the CENKENELEC Internai Regulaons, the national standards organhtions of the following countries are bound to implement this European Stan- Austria, Beig
18、ium, Czech Republic, Denmark, Finland, France, Gem, Greece, Iceland, ireland, Ita No blister in excess of Grade 1 of IS0 46282; No rust in excess of Ri 1 of Is0 46283, No breakdown in excess of Class 1 of Is0 46284, 4 General requirements 4.1 Protection against environmental influences 4.1.1 Corrosi
19、on protection This clause specifies the corrosion protection requirements for the metallic components of stnictural bearings that would otherwise suffer environmental damage due to corrosion. It excludes surfaces subject to sliding, rolling, iiiction grip or local pressure. 4.1.1.1 Peomnce The syste
20、m for protection agajnst corrosion qualified in accordance with this standard shall ensure that for a period of ten years after delivery the items meet the requirements detailed below, provided the bearings have been handled, stored and installed in accordance with this standard - No blistering dens
21、ity in excess of Grade 1 of Is0 46282. - No rusting in excess of rust Grade Ri: 1 of Is0 46283. - No breakdown of coating in excess of Class 1 of Is0 4628-4. - No degree of fiaking in excess of Class 1 of Is0 46285. Where the bearing is to be installed in an environment more aggressive than a marine
22、 environment, alternative comsion protection requirements may need to be agreed. 4.1.1.2 Documentation Tb define the corrosion protection system, the foilowing shaii be documented: - Manufacturem procedure for the corrosion protection of bearins - Material suppliem specifications; -Tests. IS0 2808 T
23、he above sha,U include as a minimum the foowing: - Standard of surface preparation (e.g. Sa 2% in accordance with Is0 8501 Sa); - pack epoxy acryM rubber); - For paint systems: of protective com (e.g. sprayed zinc, two - Number Of coats; _ No fiaking Class 1 in exess of IS0 46285. As specified by th
24、e paint manufacturer - Item number and colow, - Brand name and manufacturers reference number, - Datasheet number; - Where applied; - How applied, - Minimum dry film thickness; - Procedures for treaiment of local damage to protective coatings; - M - Results of the tests according with table 1. These
25、 tests shail be repeated every five years or whenever a change to the corrosion protection system is made. 4.2 Electrolytic corrosion Where dissimilar metah are used, me shall be taken to avoid electrolytic corrosion. IS02409 IS0 6272 5 Conformity evaluation 6.1 General The tests and inspections spe
26、cified in this clause shali be carried out to demonstrate the products conformity with this European Standard The tests and inspection are required under a production control scheme. if and when in adition to production control, third party control is required, the type tests shall be perormed prior
27、 to commencing the third party control. Resuits of previous type tests are only valid if no changes in production have occurred which influence conformity to this European Standard When during third party audit testing, a noneonformance is detected, the audit test specified in this clause shall be r
28、epeated on a further sample. if a further nonconformance is deteded, the causes of the noneonformity shall be tiaced and rectified. Documentary evidence that the noncompliance has been rectified shall be included in the manufacturers records. Oorl No visible damage with 1 kg ball and fall of 10 cm “
29、hble 1. . Test Neutral salt spray Minimum dry nIm thickness Crosscut Falling-weight Standard I AcceDtruice criteria 1 O BSI 1998 STD-BSI BS EN L337-9-ENGL 1998 lbZqbb9 Ub88972 373 Page 5 EN 1337-9 : 1997 6.2 Control of raw and constituent materials and components The bearing manufacturer shall verif
30、y that the incoming raw and constituent materials and components have been subjected to a production control scheme (sampling tests, frequencies, etc.) and, if when required, to a third party control. The result of the verification shall be noted in the manufacturers records. The bearing manufacture
31、r shall ensure that incoming raw and constituent materials and components are not used and processed (except in circumstances described below) until they have been verified as Where incoming raw and constituent materiais and components are released for urgent production purposes, they shall be posit
32、ively identified and recorded in order to permit immediate recall and replacement in the event of nonconformance to specified requirements. 6.3 Control of finished product The system for corrosion protection shaii be subjected to test in accordance with table 1. These tests shail be repeated every f
33、ive years or whenever a change to the corrosion protection system is made. confonning. O BSI 1998 - STD-BSI BS EN L337-9-ENGL 1998 Lb24bb9 Ob88973 20T Page 6 EN 1337-9 : 1997 Annex A (informative) Recommendations Structurai bearings, properly designed and fabricated in accordance with the other Part
34、s of this European Standard, can be expected to last for at least several decades and, in many cases, as long as the structure which they support. Their life can however be shortened considerably if they are not protected from the aggressive elements of the environment in which the structure they ar
35、e supporting is situatea When the environment is more aggresive than a marine environment, it is essential that the purchaser gives full details of the environment in which the bearing will be instailed, describing any localized factors which may modify the general area affected. Corrosion protectio
36、n measures take either the form of choosing a material for exposed parts of the bearing to which the environment is not aggresive, or of provi- exposed parts of the bearings with a protective coating, or some other device, such as an oil bath, to isolate them nom the environment Manufachmm can norma
37、lly be expected to have one or more protective systems with which they are familiar and which they are fully equipped to apply It wi normally be prudent for a purchaser to accept such a system provided that the manufacturer can supply suniCient evidence to support his claimed life in the relevant en
38、vironment (see 4.1.1.2). The purchaser should also be satisfied that the protective system offered can be maintained in situ and that, if the bearhgs an? supporting a steel stsucture, they can be re-coa.edwith same system that will be usedto recoat the structure. Certain locations may also require s
39、pecial protedive measures. One example of this is where blown sand is likely to inltrate moving parts and cause excessive weax Another is where roosting or nesting birds are likely to interfere with the proper functioning of the bearings. in such cases protective shields may be attached to the beari
40、ng or to the ascent structure. Care must also be Wen to ensure that such measures do not cause hamful condensation on bearing surfaces. Fire is not normaliy a hazard to which structural bearings are subjected. If however, they are installed in a building with a specified re resistance they will clea
41、rly be required to have the same fie resistance. In such circumstan ces they will be required to undergo the relevant re test with any appied protective measures in place. Subclause 4.1 of part 1 of this European Standard requii.es bearings and structures to be designed so that the bearhgs can be ma
42、intained. In this context it should be noted that, if bearings have special protective measures, then they should be readiiy removable or flexible enough to allow inspection of and proper access to the bearing. I O ES1 1998 BS EN 1337-9 : 1998 BSI 389 Chiswick High Road London w4 4AL BSI - British S
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