DNV DNV-CP-0249 PDF

Scope and application

This programme is applicable for the approval of material manufacturers of:

— Iron castings

as referred in the Society's rules and standards. For a description of general requirements, conditions and procedures related to the approval, please refer to DNV-CP-0346 which shall be applied in combination with this programme.

The product(s) used for approval testing (see Sec.3) will place limitations on the range of approval. The approval will be limited to the cast iron grades and types tested. However, test data supplied for the DNV grades with higher elongation and impact toughness requirements may cover approval of grades with lower elongation and toughness requirements, see App.A.

In the absence of relevant DNV rules, approval may also be given for the manufacture of cast iron types not covered by the rules, i.e. materials specified in recognised national or international standards, e.g. austenitic cast irons.

Approval is given for a maximum casting mass, maximum casting thickness and where relevant, a heat treatment condition.

Where iron castings are repaired by welding, or two or more items are joined by welding to form a composite item, the manufacturer's welding shop shall either be approved for welding in accordance with this programme, or be approved as welding workshop. For welding workshop approval, see DNV-CP-0352.

The manufacturer’s own heat treatment facilities shall be evaluated and approved by the Society either under this approval programme, or as approved "heat-treatment workshop" through the separate approval programme DNV-CP-0351.