8.1 All systems that are not an epoxy based system
applied according to Table 1 of this Standard are defined as an alternative
system.
8.2 This Standard is based on recognized and commonly
used coating systems. It is not meant to exclude other, alternative,
systems with proven equivalent performance, for example non epoxy
based systems.
8.3 Acceptance of alternative systems will be
subject to documented evidence that they ensure a corrosion prevention
performance at least equivalent to that indicated in this Standard.
8.4 As a minimum, the documented evidence shall
consist of satisfactory performance corresponding to that of a coating
system which conforms to the Coating Standard described in section
4, a target useful life of 15 years in either actual field exposure
for 5 years with final coating condition not less than “GOOD”
or laboratory testing. Laboratory test shall be conducted in accordance
with the test procedure given in annex 1 of this Standard.