BS EN 12308:1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Installations and equipment for LNG. Suitability testing of gaskets designed for flanged joints used on LNG piping
Hardcopy , PDF
06-30-2017
English
12-15-1998
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Foreword
1 Scope
2 Normative references
3 Definitions
3.1 liquefied natural gas (LNG)
3.2 nominal diameter (DN)
3.3 nominal pressure (PN)
3.4 NPS
3.5 Class
3.6 Class of pressure
3.7 Ps (allowable pressure)
3.8 Required bolting load Fa
4 Design specifications of tested gaskets
5 Technical documentation by the gasket manufacturer
6 Check of compatibility between bolting load and
mechanical strength of joint components
6.1 Compatibility with flanges
6.2 Compatibility with bolting
7 Means and equipment required for testing
7.1 Test rig
7.2 Measuring equipment
8 Testing
8.1 Application of bolting load
8.2 Leak testing at ambient temperature
8.3 Leak testing at cold temperature
9 Acceptance criterion
10 Test report
Annex A (informative) Thermo-mechanical behaviour of a
flanged joint with gasket
Annex B (informative) Test rig
Annex C (normative) Method for verifying the bolting load
Annex D (normative) DN equivalence for tests
Annex E (normative) PN equivalence for tests
Defines tests carried out so as to assess the suitability of gaskets designed for flanged joints used on LNG pipes. Applies for gaskets with: Nominal pressure range from PN 16 to PN 100 Nominal diameter range from DN 10 to DN 1000 Class range from Class 150 to 900 Nominal diameter range for Class flanges from NPS 1/4 to NPS 42
| Committee |
GSE/38
|
| DevelopmentNote |
Supersedes 96/701934 DC. (08/2005) Reviewed and confirmed by BSI, February 2012. (01/2012)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| SN EN 12308 : 1999 | Identical |
| UNI EN 12308 : 2001 | Identical |
| DIN EN 12308:1998-10 | Identical |
| NBN EN 12308 : 1998 | Identical |
| EN 12308:1998 | Identical |
| NF EN 12308 : 1998 | Identical |
| NEN EN 12308 : 1998 | Identical |
| I.S. EN 12308:1999 | Identical |
| NS EN 12308 : 1ED 1998 | Identical |
| UNE-EN 12308:1999 | Identical |
| EN 1514-1:1997 | Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts |
| EN ISO 6708:1995 | Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995) |
| EN 1514-2:2014 | Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges |
| EN 764 : 1994 | PRESSURE EQUIPMENT - TERMINOLOGY AND SYMBOLS - PRESSURE, TEMPERATURE, VOLUME |
| EN 1514-4:1997 | Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges |
| EN 1333:2006 | Flanges and their joints - Pipework components - Definition and selection of PN |
| EN 1160:1996 | Installations and equipment for liquefied natural gas - General characteristics of liquefied natural gas |
| PREN 1515-2 : DRAFT 94 | FLANGES AND THEIR JOINTS - BOLTING - PART 2: COMBINATION OF FLANGE AND BOLTING MATERIALS FOR STEEL FLANGES - PN DESIGNATED |
| EN 1514-3:1997 | Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 3: Non-metallic PTFE envelope gaskets |
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