The difficulty about using any rupture disc is that it cannot be fully
tested without destruction, so the quality of a product has to be achieved
by consistency of manufacturing processes. Benoil has established
procedures within its ISO 9001:2000 certification for the making of discs
and makes burst tests on each batch produced. The typical number of
tests is 5, whether the processed batch is 10 or 50, and these results
are provided to customers in the form of a Certificate of Test and
Conformity. This enables the user to assess the results directly.
Even so, many oilfield operations take place at an elevated temperature.
Temperature affects the burst disc rating and Benoil can advise a likely
actual burst value; in critical cases, it may be desirable to have
results from testing at elevated temperatures, which Benoil can
undertake on request.
Disc assemblies are marked for traceability with burst pressure as well
as foil type.