1、DEUTSCHE NORM Februarv 1999 Non-destructive testing Penetrant testing I DIN EN IS0 3452-4 Part 4: Equipment (IS0 3452-4 : 1998) English version of DIN EN IS0 3452-4 ICs 19.100 Descriptors: Non-destructive testing, penetrant testing. Zerstrungsfreie Prfung - Eindringprfung - Teil 4: Gerte (IS0 3452-4
2、 : 1998) European Standard EN IS0 3452-4 : 1998 has the status of a DIN Standard. National foreword This standard has been published in accordance with a decision taken by CEN/TC 138 to adopt, without alteration, International Standard IS0 3452-4 as a European Standard. The responsible German body i
3、nvolved in its preparation was the Normenausschu Materialprfung (Mate- rials Testing Standards Committee), Technical Committee Eindringprfung. EN comprises 6 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 3452-4 : 1999-0 Y Deutsches Institut fr
4、Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). _ English price group O7 . Sales No. 1107 07.99 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 3452-4 December 1998 ICs 19.1 O0 Descriptors: Non-destructive testing, p
5、enetrant testing. English version Non-destructive testing Part 4: Equipment Penetrant testing (IS0 3452-4 : 1998) Essais non destructifs - Examen par ressuage - Partie 4: Equipement Zerstrungsfreie Prfung - Eindring- Prfung - Teil 4: Gerte (IS0 3452-4 : 1998) (IS0 3452-4 : 1998) This European Standa
6、rd was approved by CEN on 1998-05-01. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such na
7、tional stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and
8、 notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden,
9、Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1998. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN nati
10、onal members. Ref. No. EN IS0 3452-4 : 1998 E Page 2 EN IS0 3452-4 : 1998 Title Contents Page Foreword . 2 Introduction . 2 1 Scope . 3 2 Normative references 3 5 Equipment for fixed installations . 3 Annex ZA (normative) Normative references to international publications 6 with their relevant Europ
11、ean publications previous number* official number Foreword International Standard IS0 3452-4 : 1998 which was prepared by ISO/TC 135 Non-destructive testing of the International Organization for Standardi- zation, has been adopted by Technical Committee CEN/TC 138 Non-destructive testing, the Secret
12、ariat of which is held by AFNOR, as a European Standard. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of the relevant EU Directives. This European Standard shall be given t
13、he status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by June 1999 at the latest. In accordance with the CENKENELEC Internal Regulations, the national standards organizations of the follow- ing countries are boun
14、d to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Non-destructive testing - Penetrant testing - Part 4: Eq
15、uipment, Part 2: Testing of penetrant rnate- /I riais Endorsement notice The text of the International Standard IS0 3452-4 : 1998 was approved by CEN as a European Standard without any modification. prEN 571 -2 prEN IS0 3452-2 Introduction Part 3: Reference test blocks Part 4: Equipment At the prese
16、nt time, one part of this Standard is published independently on the European and IS0 levels, the others are under the Vienna Agreement and consequently have the IS0 number at the European level. However, the Vienna agreement was applied during the work, so some European Standards have referenced th
17、em under their previous European number. The following table gives the correspondance between these different numbers. prEN 571 -3 EN IS0 3452-3 prEN 956 EN IS0 3452-4 II Part 1 : General principles I I EN 571-1 *number under which this document is referenced in some European Standards Page 3 EN IS0
18、 3452-4 : 1998 1 Scope This European standard specifies the characteristics of equipment used in penetrant testing. The characteristics of equipment required for carrying out penetrant testing depend on the number of tests to be made and on the size of the components to be tested. Two types of equip
19、ment are included in this standard: a) equipment suitable for carrying out in situ penetrant testing techniques; b) fixed installations. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited
20、at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of t
21、he publication referred to applies. EN 571 -1 prEN IS0 3452-2 Non destructive testing - Penetrant testing - Part 1 : General principles for the examination Non-destructive testing - Penetrant testing - Part 2: Testing of penetrant materials (ISOIDIS 3452-211 996) EN IS0 3452-3 prEN IS0 3059 Non-dest
22、ructive testing - Penetrant testing - Part 3: Reference blocks (IS0 3452-3:1998) Non-destructive testing - Penetrant testing and magnetic particle testing - Viewing conditions. 3 General Equipment used in penetrant testing shall be selected and applied considering the following general aspects: - eq
23、uipment should be selected being suitable for the penetrant testing technique; - all relevant health, safety and environmental requirements shall be complied with;. - the application shall be in accordance with the requirements of EN 571 -1. 4 Equipment for in situ inspection The equipment used for
24、in situ inspection shall fullfill the requirements of EN 571-1, prEN IS0 3452-2 and EN IS0 3452-3. Depending on the process being employed the following testing equipment may be used: - portable spray equipment - cloth (lint free) - brushes - personal protective equipment -white light source - UV(A)
25、 source. 5 Equipment for fixed installations 5.1 General requirements All materials of construction used for the manufacture of fixed penetrant inspection installations, e. g. tanks, pipework and ducting, shall be manufactured from materials which are resistant to attack by the products used through
26、out the complete process. In addition, these materials shall not cause any modification to the properties of the penetrant systems used. Page 4 EN IS0 3452-4 : 1998 Penetrant installations shall be located in an area where there is no possibility of contamination of the working solutions from extern
27、al sources, e. g. leaks from overhead steam pipes. In addition penetrant tanks should be fitted with lids which should be kept shut when the plant is not in use. Where plants are fitted with effluent treatment or water recirculating systems, the system shall be designed to ensure that any water disc
28、harged to waste meets local discharge requirements. In addition the recycled water shall be of a quality suitable for rinsing components. Where extraction systems are fitted, e. g. with spray application of penetrant, they shall be designed such that the local health and safety requirements relevant
29、 to operational safety and local air emission laws are fully met. All chemicals used in penetrant testing shall be stored in closed containers and storage shall meet relevant health and safety requirements. 5.2 Preparation and precleaning area Suitable equipment shall be used to carry out the prepar
30、ation and precleaning requirements described in EN 571-1. Degreasing areas shall be equipped to ensure degreasing of the components in accordance with preparation and precleaning requirements described in EN 571-1 and if necessary shall include an area for cooling the components prior to the applica
31、tion of penetrant. The degreasing and cooling facilities shall be of adequate size to handle the flow of components. Vapour degreasers using halogenated hydrocarbons shall meet relevant air pollution require- ments. 5.3 Penetrant application area Penetrant application areas shall have the facilities
32、 for applying penetrant by air assisted, airless andior electrostatic spraying, spray cans, brushing, flow-on techniques or immersion in a tank of penetrant liquid. The tanks used for all processed chemicals shall be installed with a proper retaining tray. Where fluorescent penetrants are applied by
33、 manual spraying equipment, a source of UV-A should be provided for checking the surface to be tested for penetrant coverage. Where spray application is employed, suitable extraction facilities shall be provided. 5.4 Penetrant drain area Penetrant drain stations shall consist of a tray having a slop
34、ing base, arranged so that the penetrant is collected in a separate container of the tank containing the penetrant. 5.5 Excess penetrant removal area 5.5.1 Immersion wash tank Immersion tanks shall comprise means for agitating the water or moving the components to be tested. The tank may be equipped
35、 with a tank for the overflow of a part of the contaminated water. The tank shall be equipped with means for controlling the water temperature. 5.5.2 Spray-wash areas Spray-wash stations shall comprise either manual or automatic spraying equipment. Manual spraying equipment shall be equipped with a
36、water or aidwater spray gun capable of delivering a suitable spray at a pressure as low as possible and at a temperature not exceeding 50 “C. The pressure shall be measured as near as practicably possible to the spray nozzle without a valve between the meter and the nozzle. Where manual spraying equ
37、ipment is employed, a suitable source of illumination shall be provided to control the excess penetrant removal either white light for colour contrast penetrant or UV-A for fluorescent penetrant. Automatic spraying equipment shall meet the requirements for manual equipment. In addition the number, d
38、esign and location of the nozzles shall be such that all test surfaces of the components are evenly rinsed. A suitable Page 5 EN IS0 3452-4 : 1998 drain shall be provided where automatic spraying equipment is employed. Water retained in recesses shall be removed by suitable means. 5.5.3 Emulsifier a
39、rea Emulsifier stations shall comprise the equipment given in (a) and (b), as appropriate to the process used. a) Where a hydrophilic emulsifier is to be applied by an immersion technique the station shall comprise a tank suitable to allow components to be immersed completely in the solution for a c
40、ontrolled time. Hydrophilic emulsifier may also be applied using suitable equipment by foam or flow-on technique. b) A lipophilic emulsifier shall be applied by immersion only. The station shall comprise a tank which will allow complete immersion of components in a solution for a controlled time. Th
41、is shall be followed by drainage. 5.6 Drying area If entrapped water is to be removed, appropriate equipment shall be used such as a suction system or means of rotating parts. To remove surface water appropriate equipment such as a warm air (maximum 80 OC) recirculating oven shall be used. To avoid
42、condensation or oxidation of metals and to ensure that components are properly dried, a forced air oven shall be used to ensure that there is a uniform controlled temperature distribution together with a high air flow. 5.7 Developer application area Developer stations shall comprise the equipment gi
43、ven in 5.7a) to d) as appropriate to the developer used. a) Powder developer. The station shall comprise equipment for applying the developer by one of the following: 1) dust storm cabinet 2) electrostatic spray gun 3) flock gun 4) tumbler 5) insufflator 6) fluidized bed. The equipment shall be cons
44、tructed such that an even thin coating of the developer powder is applied to all surfaces. Where a cabinet is used, it shall be of sufficient size to accommodate all the work pieces examined, either as single components or as multiples placed in wire baskets. It shall have a sealed, hinged lid and b
45、e fitted with heaters to prevent contamination of the powder by moisture. Where an electrostatic spray or a flock gun is used, suitable means of extraction shall be provided. b) Water suspension developer. The station shall comprise a tank which shall be fitted with a lid and shall be of such a size
46、 that total immersion of components can be achieved. It shall have facilities for continuous agitation of the developer either by clean air or by mechanical means, and shall be capable of maintaining the developer at the temperature recommended by the manufacturer and include a system for permitting
47、 excess developer to drain back freely into the tank. c) Solvent-based developer. The station shall comprise equipment for spray application of the developer within a cabinet. This developer may be applied by air assisted, airless and/or electrostatic spraying. The equipment shall be fitted with sui
48、table mechanical agitation to maintain the developer in suspension. Where applicable the spray gun shall be actuated by dry, clean filtered air. This developer may be spray applied from an aerosol container or spray cans. The cabinet shall be constructed so that unrestricted spraying of the componen
49、t can take place. d) Water soluble developer. Page 6 EN IS0 3452-4 : 1998 Title The station shall comprise a tank which shall be fitted with a lid and shall be of such a size that total immersion of components can be achieved. It shall be capable of maintaining the developer at the temperature recom- mended by its manufacturer and include a system for permitting excess developer to drain back freely into the tank. CEN number IS0 number 5.8 Inspection area Part 1 : General principle Part 2: Testing of penetrant mate- rials Part 3: Reference test blocks Inspection
