Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_22001 ( "Name (year commissioned)" text, "Owner/operator" text, "Length" text, "Maximum diameter" text, "From/to" text, "Licence number" text )

### Question ###
What is Esperance pipeline co total diameter?

### Accurate SQL ###

SELECT "Maximum diameter" FROM table_22001 WHERE "Owner/operator" = 'Esperance Pipeline Co'