Spanish to English Tech/Engineering oil pipelines

Same document from Spain referring to the deepening of an oil pipeline that has been buried too shallowly, according to a report prepared. There is very little context. Their "Plan de actuaciones" is shown on a table with the following 3 main headings : Actuaciones Previstas, Precios Medios and Inversion 2003. Under Actuaciones Previstas are 2 sub-headings of Bajada (75) and Proteccion (357). Under Precios Medios are the same sub-headings of Bajada (22.01) and Proteccion (3.78). Under Inversion 2003, Bajada (1,650.00) and Proteccion (1,350.00). Proteccion refers to the recovering of the pipeline?