NBN EN 12817 : 2010

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Safety
  3.1 Safety precautions
  3.2 Unsafe conditions
  3.3 Leaks
4 Written scheme
5 Tank inspection and requalification
  5.1 Routine inspection
  5.2 Periodic inspection
  5.3 Requalification
6 Inspection of tank and tank fittings
  6.1 Tank
  6.2 Tank fittings and immediate pipework
  6.3 Valve cover
  6.4 Bonding
  6.5 Pressure relief valve
  6.6 Pressure gauge
  6.7 Contents gauges
  6.8 Shut-off valves
  6.9 Studs, bolts, nuts, and washers
7 Site inspection
  7.1 Storage site
  7.2 Piers and foundations
  7.3 Warning notices
8 Competence
  8.1 Routine inspection
  8.2 Periodic inspection
  8.3 Requalification
9 Records
  9.1 Tank data
  9.2 Reports
Annex A (informative) Visual inspection
  A.1 Internal and external visual inspections
  A.2 Inspection techniques
      A.2.1 External inspection
      A.2.2 Internal inspection
  A.3 Records
  A.4 Additional inspection
Annex B (informative) Hydraulic pressure test
Annex C (informative) Acoustic emission testing
  C.1 General
  C.2 Safety precautions
  C.3 Acceptance criteria
Annex D (informative) Ultrasonic thickness test
  D.1 General
  D.2 Apparatus setting
  D.3 Control measurement
  D.4 Shell thickness measurements
  D.5 End thickness
  D.6 Interpretation
  D.7 Rejection criteria
Annex E (informative) Assessment of tanks by sampling
  E.1 General
  E.2 Homogeneous batch
  E.3 Selection of samples
  E.4 Sample selection
  E.5 Inspection period
  E.6 Presentation of results and decisions
  E.7 Pass criteria
  E.8 Example calculation of a sample
Annex F (informative) Example of a report
Annex ZA (informative) A-deviations

Specifies requirements for routine inspection, periodic inspection and requalification of fixed above ground LPG storage tanks of sizes from 150 l up to and including 13 m[3], and associated fittings and to marking tanks and/or keeping records, as appropriate, as a result of routine inspection, periodic inspection and requalification.