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

What is Esperance pipeline co total diameter?
SELECT "Maximum diameter" FROM table_22001 WHERE "Owner/operator" = 'Esperance Pipeline Co'
SELECT "Maximum diameter" FROM "table_22001" WHERE "Owner/operator" = 'Esperance Pipeline Co'