Fig: Loading soda ash. Note good condition of the hold paintwork
The following is a typical instruction sent to a ship about to load a cargo of soda ash:
Contamination is a problem when carrying soda ash. The ship should not have carried chrome or chrome products, such as ferrochrome, chrome ore, bagged chrome and chrome manganese within the past six months to a year.
No previous cargo residues or staining on any surfaces of the holds to include tank tops, bulkheads, ladders, side pockets, container sockets of the under sides of hatch covers if applicable. No loose or flaking paint on any surfaces of the hold.
No bubble rust, loose rust or painted rust that maybe chipped or scraped on any surfaces of the hold. Ventilation ports/fan spaces if applicable must be checked for possible loose rust or paint chips that might fall onto the cargo.
Hold may not be chemically washed due to potential contamination and should only be cleaned with fresh water (high pressure).