G 501 Instruction Bulletin 05/2012

Airborne remote gas detection ++ PDF file ++

62,03 €*
  • DVGW
  • 18 pages
  • available as PDF only
  • 1st edition 2012
  • 1
  • 1
  • 509034
The Instruction Bulletin G 501 defines the requirements and test criteria applying to remote gas detection integrated aboard aircraft (helicopters or airplanes) and designed to aerially monitor both buried natural gas transmission pipelines as well as above ground natural gas transmission pipelines that are suited for airborne remote gas detection, both inside and outside built‑up areas.

Portable hand‑held measuring instruments or methods combined with motor vehicles shall not be dealt with in this paper, as due to their flat observation angle to the surface compared to detection from the air they are subject to modified requirement criteria.

1 Scope

2 Normative references

3 Terms, Symbols, Units and Abbreviations

4 Requirements

4.1 Measuring range

4.2 Detection threshold and sensitivity

4.3 Measuring errors

4.3.1 Function checks

4.3.2 Indications

4.3.3 Data logging

4.3.4 Limitations of use

4.3.5 Cross sensitivities

4.4 Aeronautical approval

4.5 Eye safety

4.6 Operating instructions

4.7 Operator training

4.8 Geo-information with respect to pipeline routes

5 Test

5.1 Object of the test and documents

5.2 Verification of general requirements

5.2.1 Verifying the measuring range

5.2.2 Verifying the detection threshold and detection sensitivity

5.2.3 Verifying the function checks

5.2.4 Indications

5.2.5 Data logging

5.2.6 Cross sensitivities

5.2.7 Aviation permission

5.2.8 Eye safety

5.2.9 Operating instructions

6 Quality assurance

7 Performance

Annex (informative)

A.1 Detection threshold

A.2 Test set-up and execution to verify the in-flight detection sensitivity

A.3 Determination of the maximum permissible deviation of the gas pipeline geo-information