DIN 50925:1992-10
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
TESTING THE PERFORMANCE OF CATHODIC CORROSION PROTECTION OF BURIED INSTALLATIONS
Hardcopy , PDF
01-09-2003
English
12-01-2013
1 Scope and field of application
2 Concepts
2.1 Cell current
2.2 Coupon
2.3 Impressed-current electrode
2.3.1 Impressed-current anode
2.3.2 Impressed-current cathode
2.4 Intensive measurement
2.5 Intensive measurement method
2.6 IR*)-free potential
2.7 Structure/electrolyte potential
2.8 Potential gradients
3 Measurement of structure/electrolyte potentials
3.1 Objective of potential measurement
3.2 Sources of error in potential measurement
3.2.1 Protection current
3.2.2 Equalizing current
3.2.3 Cell current
3.2.4 Stray current
3.3 Methods of measuring IR-free structure/soil
potentials
3.3.1 Measurement of instantaneous-off
potentials (instantaneous-off potential
method)
3.3.2 Intensive measurement methodting
currents
3.3.2.1 Symmetrical potential
gradients
3.3.2.2 Asymmetrical potential
gradients
3.3.2.3 Evaluation of intensive
measurement data
3.3.2.4 Intensive measurement
method will stray current
interference
3.3.3 Potential measurement with coupons
4 Action to be taken in the case of inadequate cathodic
protection
5 Advice on monitoring procedures
6 Assessment of corrosion protection in the presence of
strong alternating currents
Standards and other documents referred to
Explanatory notes
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