1. A set of rules or recommendations established to protect and maintain the condition of something, such as historical sites, documents, or natural resources
The museum follows strict preservation guidelines to protect ancient artifacts.
O museu segue diretrizes rigorosas de preservação para proteger artefatos antigos.
2. Official standards or procedures designed to ensure the longevity and integrity of cultural or environmental assets
Preservation guidelines for the historic building include regular inspections and careful restoration work.
As diretrizes de preservação para o edifício histórico incluem inspeções regulares e trabalho de restauração cuidadoso.