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BS EN 14382:2019 - TC Tracked Changes. Gas safety shut-off devices for inlet pressure up to 10 MPa (100 bar), 2020
- 30334291_NEW.pdf [Go to Page]
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms and definitions [Go to Page]
- 3.1 General terms and definition of type of gas safety shut-off devices
- 3.2 Terms and definition of components of safety devices
- 3.3 Terms, symbols and definitions related to the functional performance [Go to Page]
- 3.3.1 Terms related to types of pressure
- 3.3.2 Other terms related to pressure
- 3.4 Possible values of all variables
- 3.5 Terms, symbols and definitions related to the set value of the trip pressure
- 3.6 Terms, symbols and definitions related to the flow
- 3.7 Terms, symbols and definitions related to accuracy and some other performances
- 3.8 Terms, symbols and definitions related to the design and tests
- 3.9 Summary of symbols, terms, subclauses and units
- 4 Construction requirements [Go to Page]
- 4.1 Basic requirements [Go to Page]
- 4.1.1 General
- 4.1.2 Types of gas shut-off devices [Go to Page]
- 4.1.2.1 Stand-alone gas shut-off devices
- 4.1.2.2 Gas shut-off devices integrated into a gas pressure regulator
- 4.1.2.3 Gas safety shut-off device with in-line gas pressure regulator
- 4.1.2.4 Safety shut-off device plus a second safety shut-off device
- 4.1.3 End connections
- 4.1.4 Flange ratings
- 4.1.5 Nominal sizes and face-to-face dimensions
- 4.1.6 Sealing of the adjusting device
- 4.1.7 Set range
- 4.1.8 External visual Indication of the position of the closing member
- 4.1.9 Springs
- 4.1.10 Parts transmitting actuating forces
- 4.1.11 Replaceable parts that can be affected by erosion or abrasion
- 4.2 Materials [Go to Page]
- 4.2.1 Requirements for metallic materials [Go to Page]
- 4.2.1.1 Pressure bearing parts and inner metallic partition walls
- 4.2.1.2 Auxiliary devices, integral process and sensing lines, connectors and fasteners
- 4.2.1.3 Other parts
- 4.2.1.4 Material inspection documents of pressure bearing parts and inner metallic partition walls
- 4.2.1.5 Material inspection documents of fasteners and compression fittings
- 4.2.1.6 Manufacturing requirements
- 4.2.1.7 Non-destructive testing (NDT)
- 4.2.2 Requirements for elastomeric materials (vulcanized rubber materials)
- 4.2.3 Requirements for non-metallic materials different from those in 4.2.2
- 4.3 Strength of housings and other parts [Go to Page]
- 4.3.1 Body and its inner metallic partition walls
- 4.3.2 Flanges
- 4.3.3 Other pressure bearing parts
- 4.3.4 Integral strength gas safety shut-off devices
- 4.3.5 Differential strength gas safety shut-off devices
- 4.3.6 Inner metallic partition walls
- 4.3.7 Minimum values of safety factor for pressure bearing parts
- 4.3.8 Welded joint coefficient
- 4.4 Strength of elastomeric diaphragms [Go to Page]
- 4.4.1 Diaphragms of gas safety shut off devices class A
- 4.4.2 Diaphragms of gas safety shut off devices class B
- 5 Functional and characteristic requirements [Go to Page]
- 5.1 General [Go to Page]
- 5.1.1 Shutting-off and opening
- 5.1.2 Mounting position
- 5.1.3 Bypass
- 5.1.4 Ice formation
- 5.1.5 Failure modes [Go to Page]
- 5.1.5.1 General
- 5.1.5.2 SSDs of functional class A
- 5.1.5.3 SSDs of functional class B
- 5.1.6 Pressure drop
- 5.1.7 Shell strength
- 5.1.8 External tightness
- 5.1.9 Internal sealing
- 5.2 Accuracy group
- 5.3 Response time
- 5.4 Relatching difference and unlatching [Go to Page]
- 5.4.1 Relatching difference
- 5.4.2 Unlatching under mechanical impact
- 5.5 Closing force
- 5.6 Endurance and accelerated ageing
- 5.7 Strength of the trip mechanism, valve seat and closing member against the dynamic impact of flowing gas
- 5.8 Antistatic characteristics
- 5.9 Flow coefficient
- 5.10 Final visual inspection [Go to Page]
- 5.10.1 Requirements for final visual inspection after type tests
- 5.10.2 Requirements for final visual inspection after routine tests and production surveillance
- 6 Testing [Go to Page]
- 6.1 General
- 6.2 Tests
- 6.3 Type test
- 6.4 Selection of test samples
- 6.5 Routine tests
- 6.6 Production surveillance
- 7 Test and verification methods [Go to Page]
- 7.1 Dimensional check and visual inspection
- 7.2 Materials check
- 7.3 Verification of the strength of parts under pressure [Go to Page]
- 7.3.1 Metallic pressure bearing parts and inner metallic partition walls
- 7.3.2 Elastomeric pressure containing parts
- 7.4 Verification of the strength of parts transmitting actuating forces
- 7.5 Shell and inner metallic partition walls strength test
- 7.6 Alternative shell and inner metallic partition walls strength test
- 7.7 External tightness test [Go to Page]
- 7.7.1 External tightness test of metallic housing
- 7.7.2 External tightness test of chambers bounded on at least one side by a diaphragm
- 7.8 Internal sealing test
- 7.9 Test method and acceptance criteria to verify the antistatic characteristics
- 7.10 Accuracy group [Go to Page]
- 7.10.1 General conditions
- 7.10.2 Accuracy Group test at ambient temperature
- 7.10.3 Accuracy Group test at the limit temperatures –20 °C or –10 °C and 60 °C
- 7.10.4 Verification of the upper limit of the highest set range for overpressure monitoring
- 7.10.5 Determination of flow coefficient
- 7.11 Response time
- 7.12 Relatching difference and unlatching [Go to Page]
- 7.12.1 Trip pressure for over-pressure monitoring
- 7.12.2 Lower trip pressure
- 7.13 Verification of closing force
- 7.14 Endurance and accelerated ageing
- 7.15 Resistance to gas of non-metallic parts
- 7.16 Verification of the strength of the trip mechanism, valve seat and closing member against dynamic impact of flowing gas
- 7.17 Final visual inspection [Go to Page]
- 7.17.1 Final visual inspection after type test
- 7.17.2 Final visual inspection after routine tests and production surveillance
- 8 Field surveillance
- 9 Documentation [Go to Page]
- 9.1 Documentation related to type test [Go to Page]
- 9.1.1 Documentation required prior to type test
- 9.1.2 Test report
- 9.2 Documentation related to the routine tests
- 9.3 Documentation related to production surveillance in accordance with 6.6 [Go to Page]
- 9.3.1 Documentation to be available for production surveillance
- 9.3.2 Production surveillance report
- 9.4 Operating instructions
- 9.5 Information on sizing
- 10 Marking [Go to Page]
- 10.1 General requirements
- 10.2 Basic requirements
- 10.3 Other additional requirements
- 10.4 Markings for the various connections
- 10.5 Identification of auxiliary devices
- 11 Packaging and transportation of finished product
- Annex A (informative)Ice formation [Go to Page]
- A.1 General
- A.2 Requirements
- A.3 Tests
- Annex B (informative)Compliance evaluation) [Go to Page]
- B.1 General
- B.2 Introduction
- B.3 Procedure
- B.4 Manufacturer’s compliance evaluation
- B.5 Issue of the certificate of compliance
- Annex C (informative)Pressure drop and flow coefficient [Go to Page]
- C.1 Calculation method for pressure drop throughout the SSD
- C.2 Test method for the determination of the flow coefficients
- Annex D (normative)Alternative test method for verification of the strength of the trip mechanism, valve seat and closing member [Go to Page]
- D.1 Test method
- D.2 Test method for the determination of the dynamic factor Cr
- D.3 Test method for a series of SSDs
- Annex E (informative)Sizing equation
- Annex F (informative)Inspection certificate
- Annex G (informative)Order specification [Go to Page]
- G.1 General
- G.2 Minimum specifications [Go to Page]
- G.2.1 Details of construction
- G.2.2 Dimensions
- G.2.3 Performance
- G.3 Optional specifications
- Annex H (informative)Acceptance test
- Annex I (informative)Suitability of safety shut-off device for damp operating conditions - Test procedure, requirement and acceptance criteria
- Annex J (normative)Vent limiter [Go to Page]
- J.1 General
- J.2 Scope
- J.3 Terms, symbols and definitions
- J.4 Requirements [Go to Page]
- J.4.1 General requirements
- J.4.2 Materials
- J.4.3 Strength
- J.4.4 Functional requirements
- J.5 Testing and acceptance criteria [Go to Page]
- J.5.1 General
- J.5.2 Type test method
- J.6 Documentation
- J.7 Specific marking on vent limiter
- Annex K (informative)Glossary
- Annex L (informative)Environmental Provisions
- Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered [Go to Page]
