DNV DNVGL-CP-0246 PDF

Scope and application

This programme is applicable for the approval of manufacturers of:

Steel 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 DNVGL CP 0346 which shall be applied in combination with this programme.

This programme is applicable for the approval of manufacturers of products indicated in Table 1 as per DNV GL rules and standards.

The product(s) used for approval testing (see Sec.3) will place limitations on the range of approval. The approval will be limited to:

each steel type group or material grade (see App.A)

carbon and carbon-manganese (C and C-Mn) steels

the individual alloy steels

the individual stainless steels

each application area, see Table 1

casting method

maximum casting weight

maximum section/wall thickness

heat treatment/delivery condition.

The approval is limited to the material grade for which approval tests are carried out, but certain grades may also cover other grades in the same steel type group, or the entire steel type group, as explained in App.A.

Where steel 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 DNVGL CP 0352.

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

Where heat treatment is performed by a sub supplier, the sub supplier shall be approved by the Society as "heat treatment workshop" in accordance with DNVGL CP 0351.