BS EN ISO 28721-1:2019
$142.49
Vitreous and porcelain enamels. Glass-lined apparatus for process plants – Quality requirements for apparatus, components, appliances and accessories
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 26 |
This document specifies the quality requirements for apparatus, components, appliances and accessories of glass-lined steel (including semi-crystallized enamel coatings) and glass-lined steel castings used for process plants. It specifies the quality requirements and the tests to be carried out by the manufacturer as well as the actions to be taken to repair defects.
It is also applicable to glass-lined pumps, pump components and fittings.
It does not apply to glass-lined flanged steel pipes or glass-lined flanged steel fittings.
Provisions for glass-lined flanged steel pipes and glass-lined flanged steel fittings are given in ISOÂ 28721-4 .
The test methods specified cover checking the enamel, the dimensional accuracy and the performance of apparatus and components.
This document is applicable to new apparatus and components as well as used items that have been re-enamelled.
It does not contain requirements regarding the chemical or physical properties of vitreous and porcelain enamels.
Examples of test reports are given in Annex A.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | European foreword Endorsement notice |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references |
| 8 | 3 Terms and definitions 4 Requirements 4.1 General 4.2 Design and quality of enamel finish 4.3 Surface 4.4 Defects 4.4.1 General 4.4.2 Defects unacceptable in the finished product |
| 9 | 4.4.3 Repairable defects |
| 10 | 4.4.4 Vessels and columns 4.4.5 Accessories 4.4.6 Fittings and pump components 4.5 Coating thickness 4.6 General tolerances 4.7 Finish |
| 11 | 5 Testing 5.1 General 5.2 Visual examination 5.3 High-voltage test 5.4 Testing for cracks 5.5 Coating thickness measurement |
| 12 | 5.6 Measurement of dimensions 5.7 Determination of the concentricity of agitators and pump rotors 5.7.1 General 5.7.2 Agitators 5.7.3 Pump rotors 5.8 Performance testing |
| 13 | 5.9 Completeness check 6 Manufacturing stages and inspections 7 Repairing defects 7.1 Repairing with plugs |
| 15 | 7.2 Removing impurities 8 Test report |
| 16 | 9 Packaging and transportation 10 Inspection at delivery |
| 17 | Annex A (informative) Examples of test reports |
| 24 | Bibliography |
