03/105149 DC : DRAFT MAR 2003
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
PREN 14620-2 - DESIGN AND MANUFACTURE OF SITE BUILT, VERTICAL, CYLINDRICAL, FLAT-BOTTOMED STEEL TANKS FOR THE STORAGE OF REFRIGERATED, LIQUEFIED GASES WITH OPERATING TEMPERATURES BETWEEN -5 DEGREES C AND -165 DEGREES C - PART 2: METALLIC COMPONENTS
29-12-2006
23-11-2012
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 General
4.2 Temperatures
4.3 Primary and secondary liquid container
4.4 Vapour container/outer tank
4.5 Other components
5 Design
5.1 Design theory
5.2 Primary and secondary liquid container
5.3 Vapour container (outer tank)
5.4 Suspended roof
5.5 Nozzles
5.6 Primary and secondary containment, bottom connections
5.7 Connections between containers
5.8 Other details
6 Fabrication
6.1 Handling of materials
6.2 Plate preparation and tolerances
6.3 Tolerances
6.4 Roof
6.5 Temporary attachments
7 Welding procedures
7.1 General
7.2 WPAR requirements
7.3 Impact testing
7.4 9% Nickel steel
7.5 Welders and welding operators
7.6 Production test plates
8 Welding
8.1 Tack and temporary welds
8.2 Atmospheric conditions
8.3 Preheating
8.4 Post-weld heat treatment
9 Inspection
9.1 Qualification of NDE personnel
9.2 Inspection procedures
9.3 Type of inspections
9.4 Visual inspection
9.5 Dye penetrant examination
9.6 Magnetic particle examination
9.7 Vacuum box examination
9.8 Ammonia tightness test
9.9 Soap bubble examination
9.10 Radiographic examination
9.11 Ultrasonic examination
9.12 Acceptance criteria
9.13 Unacceptable defects in horizontal welds
9.14 Acceptable thinning after grinding
Annex A (informative) Actions for membrane
Annex B (informative) Determination of the load and fatigue
curves for membrane
Bibliography
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.