DNV DNV CLASSIFICATION NOTES 31.13 PDF

Scope of documentation

Structure-related documents required for approval of independent tank types C are given in the DNV Rules. Typical documentation includes the following:

— detailed drawings of cargo tanks including information on non-destructive testing of welds and strength and

tightness testing of tank

— specification of materials in cargo tank and cargo piping systems

— detailed drawings of supports

— specification of welding procedures for cargo tanks

— specification of stress relieving procedures (thermal and mechanical)

— complete stress analysis submitted for review.

The submitted documentation should among others specify the following descriptions:

— maximum allowable relief valve setting (MARVS)

— maximum vacuum pressure

— maximum gas pressure

— maximum external pressure

— list of products carried

— product density

— tank(s) location.