NS EN 12567 : 1ED 2000
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INDUSTRIAL VALVES - ISOLATING VALVES FOR LNG - SPECIFICATION FOR SUITABILITY AND APPROPRIATE VERIFICATION TESTS
01-05-2017
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Tests and design requirements
4.1 Tests
4.2 Consideration of thermal conditions in steady
state
4.3 Consideration of thermal conditions in
transient state
4.4 Protection against thermal expansion of LNG
4.5 Cryogenic neck extension
4.6 Sealing devices for stem or shaft
4.7 Assembly of valve (with the exception of the
connection to the pipework)
4.8 Connections to the pipework
4.9 External protection
4.10 Pressure retaining metal parts
4.11 Electro-chemical effects
5 Functional requirements and tests
5.1 General
5.2 Electrical continuity
5.3 Mechanical strength of the shell
5.4 Endurance
5.5 Fire resistance
5.6 Seat leak tightness
5.7 Operability
5.8 Number of turns
5.9 Attachment of actuator to the valve
5.10 Manually operated valve
5.11 Stems or shafts
5.12 Cryogenic product acceptance
6 Marking
7 Preparation for storage and transportation
8 Information to be provided by the supplier
Annex A (normative) Thermal shock test
Annex B (normative) Endurance tests
Annex C (normative) Range of DN for type tests
Annex D (normative) Range of PN and Class for type tests
Annex E (normative) Low temperature acceptance test
Annex F (normative) Marking for sealing direction
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.