EN 14879-4:2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General
  4.1 Materials
      4.1.1 Metallic substrates and semi-finished products
      4.1.2 Linings
  4.2 Selection criteria
      4.2.1 General
      4.2.2 Aggressive substances
      4.2.3 Type and frequency of fluid loading
      4.2.4 Thermal loading
      4.2.5 Changes in temperature
      4.2.6 Mechanical loading
      4.2.7 Climatic influences
      4.2.8 Additional requirements
  4.3 Load profile
  4.4 Design of component
  4.5 Manufacture of the lining
      4.5.1 Environmental conditions
      4.5.2 Surface condition and preparation of the substrate
      4.5.3 Preparation and application of pre-cut parts of the
            semi-finished products
      4.5.4 Lining joints
      4.5.5 Thermal post
  4.6 Lined component
5 Repair of defects
6 Designations
7 Packaging, transport, storage and installation
  7.1 General
  7.2 Packaging and transport
  7.3 Storage
  7.4 Installation
8 External finish of surfaces not to be lined
9 Testing
  9.1 General
  9.2 Basic requirements
      9.2.1 Resistance to the service fluid
      9.2.2 Cleaning and neutralizing processes
      9.2.3 Adhesive strength
      9.2.4 Capability of dissipating electrostatic charges
      9.2.5 Additional requirements
  9.3 Testing of suitability
      9.3.1 General
      9.3.2 Testing of resistance and tightness to the service fluid
      9.3.3 Testing of adhesive strength
      9.3.4 Testing of capability to dissipate electrostatic charges
  9.4 Acceptance inspection
      9.4.1 General
      9.4.2 Visual inspection
      9.4.3 Measurement of lining thickness
      9.4.4 Testing of Hardness
      9.4.5 Testing of Adhesion
      9.4.6 High-voltage testing for tightness
      9.4.7 Testing of capability to dissipate electrostatic
            charges (special test)
      9.4.8 Destructive testing of weld seams (special test)
      9.4.9 Test report
Annex A (informative)
Annex B (normative) Material combinations to which the media
        lists for rubber linings are applicable
 B.1 Hard rubber linings (media list I)
 B.2 Soft rubber lining
     B.2.1 Butyl rubber, halogenated butyl rubber (media list II)
     B.2.2 Chloroprene rubber (media list III)
 B.3 Test media for the media lists
     B.3.1 General
     B.3.2 Media lists
Annex C (normative) Test fluid groups for verification of
        suitability for material/media combinations
Annex D (normative) Testing the dissipating capability
 D.1 Principle
     D.1.1 Dissipation resistance
     D.1.2 Dissipation resistance to earth
 D.2 Testing of dissipation resistance of test samples
     D.2.1 Test equipment
     D.2.2 Test procedure
     D.2.3 Test report
 D.3 Measurement of dissipation resistance to earth on the
     completely applied lining
     D.3.1 Test equipment
     D.3.2 Preparation of the lining
     D.3.3 Procedure
     D.3.4 Test report
Annex E (informative) Sample form for acceptance inspection report
Annex F (informative) A-deviations
Bibliography

This document describes the requirements for and methods of testing of organic linings which are applied to metallic process engineering equipment that will come in contact with chemical substances. The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners )).The standard applies to linings which serve one or more of the following purposes:to protect the component from adverse effects of aggressive substances;to protect waters (e.g. ground water) from harmful substances;to protect the charge from becoming contaminated by components released from the substrate material;to achieve a particular surface quality.This standard applies to vessels, apparatus, piping parts and other components for process plants made of metallic substrate materials which are in contact with media and are provided with a surface protection made ofa)prefabricated, natural or synthetic rubber based sheeting (subsequently named rubber lining), to be applied in the workshop or on site;b)prefabricated, phenol formaldehyde or epoxy resin based sheeting (subsequently named duroplastic lining), to be applied in the workshop only;c)prefabricated, thermoplastic products (e.g. foils, sheeting, plates, pipes) (subsequently named thermoplastic lining), to be applied in the workshop or on site.The standard specifies the requirements, acceptance inspection, packaging, transport, storage and installation of organic linings for metallic materials.The tests described in this standard are intended for verification of the suitability of sheeting used for linings and for acceptance inspection to be carried out on the products during or after application of the lining or as part of routine inspections to determine any changes effected in the lining during service.