API 7NRV : 2006

1 SCOPE
2 NORMATIVE REFERENCES
3 TERMS AND DEFINITIONS
4 REQUIREMENTS
  4.1 General
  4.2 Design requirements
  4.3 Functional considerations
  4.4 Design considerations
  4.5 Verification test
5 MATERIALS
  5.1 General
  5.2 Metals
  5.3 Non-metals
  5.4 Traceability
6 QUALITY CONTROL REQUIREMENTS
  6.1 General
  6.2 Documentation retention
  6.3 Personnel qualifications
  6.4 Calibration systems
  6.5 Inspection of elastomeric materials
  6.6 Dimensional inspection
  6.7 Thread inspection
  6.8 Welding and brazing
  6.9 Qualification of heat treatment equipment
  6.10 Coatings, overlays, and surface treatments
  6.11 Mechanical and physical properties (where required by this
       Standard)
  6.12 NDE requirements
7 TESTING
  7.1 General
  7.2 Verification testing
  7.3 General requirements for an NRV verification test facility
  7.4 NRV verification test procedure
  7.5 NRV Nitrogen Pressure Test
  7.6 NRV Hydro Pressure Test
  7.7 NRV Cycle Test
  7.8 NRV Erosion Test
  7.9 RV Float Sub and NRV Landing Nipple testing
  7.10 NRV Equalizing Head testing
  7.11 Verification test for seal materials
  7.12 Production Testing
8 IDENTIFICATION, DOCUMENTATION AND PREPARATION FOR
  TRANSPORT
  8.1 Identification
  8.2 Documentation
  8.3 Preparation for transport
APPENDIX A MINIMUM TEST DATA
APPENDIX B API MONOGRAM

Provides the minimum acceptable requirements for Drill String Non-return Valve (NRV) equipment.