Oracle DUL type of tool for extracting data from corrupt data pump file

I have a customer heard about DUL tool. The database they have is 11.2.0.2 on Windows 64 bit OS (Single instance, file system) and they are trying to recover database. Corruption came from UPS power failure which corrupted file system.

They have a data pump export which appears to be corrupt according to “DataPump Import (IMPDP) Fails With Errors

ORA31694

ORA31644

(Doc ID 1417033.1)”.

Is there any tool (including DUL itself) that can extract some data from corrupt datapump file ?

pls check this doucment:  http://www.parnassusdata.com/en/node/270