Regulations and Code Requirements
What this domain tests
This domain examines the regulatory chain behind a piping installation: IMO instruments such as SOLAS and MARPOL, flag-State requirements, classification-society rules, and the approved drawing and test package. Questions often ask which document governs a detail rather than simply recalling a rule number.
Core rules
- SOLAS Chapter II-1 addresses machinery installations, including piping for essential services; Chapter II-2 addresses fire mains and fire protection.
- MARPOL Annex I controls oil piping and discharge; bilge and fuel systems must not create an illegal overboard path.
- Classification rules set material, wall thickness, joining, testing, and survey requirements. The approved drawing and specification are the working acceptance documents.
- Any change to an approved system requires re-approval. Field changes are not automatically accepted because they look equivalent.
- Welders and welding procedures must be qualified to a recognized standard, and records must be traceable.
Worked example
A new ballast line is proposed in a cargo area. First confirm design pressure and material against the approved piping specification. Check the class rule for ballast-system material and test pressure. Confirm the WPS and welder qualification cover the joint. Submit the isometric and test package for review. During installation, the surveyor witnesses fit-up and the hydrostatic test. Reasoning: the regulation sets the minimum, but the approved drawing and specification define the actual acceptance criteria for this line.
Traps
- Quoting SOLAS for a detail that is actually a class rule or flag-State requirement.
- Assuming a lower test pressure is acceptable because the line is “low pressure.”
- Missing an approved equivalent or exemption.
- Installing an unapproved material substitution and expecting the surveyor to accept it.