Foreword
Introduction
1 Scope
1.1 Purpose
1.2 Applicability
1.3 Service conditions
1.4 Product specification levels (PSL)
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Design and performance - General requirements
4.1 Performance requirements - General
4.2 Service conditions
4.3 Design methods
4.4 Miscellaneous design information
4.5 Design documentation
4.6 Design review
4.7 Design verification
5 Materials - General requirements
5.1 General
5.2 Written specifications
5.3 Mandrel tubing and casing hangers
5.4 Bodies, bonnets, end and outlet connections
5.5 Ring gaskets
5.6 Test coupons (TC)
5.7 Qualification test coupons (QTC)
5.8 Heat-treating equipment qualification
5.9 Material qualification
5.10 Bullplugs and valve-removal plugs
5.11 Back-pressure valves
5.12 Pressure-boundary penetrations
5.13 Wear bushings
5.14 Hub-end connectors
6 Welding - General requirements
6.1 General
6.2 Non-pressure-containing weldments other than weld
overlays (PSL 1 to PSL 3)
6.3 Pressure-containing fabrication weldments for bodies,
bonnets, end and outlet connections, bullplugs,
valve-removal plugs and back-pressure valves
6.4 Pressure-containing repair weldments for bodies,
bonnets, end and outlet connections, bullplugs,
valve-removal plugs and back-pressure valves
6.5 Weld overlay for corrosion resistance and/or hard
facing and other material surface property controls
7 Quality control
7.1 General
7.2 Measuring and testing equipment
7.3 Quality control personnel qualifications
7.4 Quality control requirements
7.5 Quality control records requirements
8 Equipment marking
8.1 Marking requirements
8.2 Wellhead equipment
8.3 Connectors and fittings
8.4 Casing and tubing hangers
8.5 Valves and chokes
8.6 Loose connectors [flanged, threaded, other end
connectors (OEC) and welded]
8.7 Other equipment
8.8 Studs and nuts
8.9 Christmas trees
8.10 Valve-removal plugs
8.11 Bullplugs
8.12 Back-pressure valves
9 Storing and shipping
9.1 Draining after testing
9.2 Rust prevention
9.3 Sealing surface protection
9.4 Assembly and maintenance instructions
9.5 Ring gaskets
9.6 Age control of non-metallic materials
10 Equipment-specific requirements
10.1 Flanged end and outlet connections
10.2 Threaded end and outlet connections
10.3 Studs and nuts
10.4 Ring gaskets
10.5 Valves
10.6 Casing and tubing heads
10.7 Casing and tubing hangers
10.8 Tubing-head adapters
10.9 Chokes
10.10 Tees and crosses
10.11 Test and gauge connections for 103,5 MPa and 138,0
MPa (15 000 psi and 20 000 psi) equipment
10.12 Fluid sampling devices
10.13 Christmas trees
10.14 Cross-over connectors
10.15 Adapter and spacer spools
10.16 Actuators
10.17 Lock screws, alignment pins and retainer screw
packing mechanisms
10.18 Other end connectors (OECs)
10.19 Top connectors
10.20 Surface and underwater safety valves and actuators
10.21 Bullplugs
10.22 Valve-removal plugs
10.23 Other pressure-boundary penetrations
10.24 Back-pressure valves
11 Repair and remanufacture
Annex A (informative) Purchasing guidelines
Annex B (informative) US customary unit tables and data for
this International Standard
Annex C (informative) Method of calculating stud bolt lengths
for type 6B and 6BX flanges
Annex D (informative) Recommended flange bolt torque
Annex E (informative) Recommended weld groove design dimensions
Annex F (informative) Performance verification procedures
Annex G (informative) Design and rating of equipment for use
at elevated temperatures
Annex H (normative) Design and manufacture of surface
wellhead running, retrieving and testing
tools, clean-out tools and wear bushings
Annex I (normative) Performance verification procedures for
surface safety valves and underwater
safety valves
Annex J (normative) Repair and remanufacture requirements
Annex K (informative) Recommended specifications for top
connectors for christmas trees
Annex L (normative) Specifications for valve-removal
preparations and valve-removal plugs
Annex M (informative) List of tables and figures
Bibliography