Inspecting Discharge Procedures for Tankers and Barges.
Verify numbers on seals used for split cargo isolations, sea suction valves, and discharge valves before
and after discharge.
Verify that all-levels of samples are taken from each cargo tank.
- Perform a visual check on each sample.
- In the case of split cargo, different products in adjacent compartments will be tested as necessary to
determine if commingling has occurred.
- Verify that samples are composited and required retain samples are maintained IAW AR 715-27.
Give approval for discharge to proceed if the preliminary examination indicates that the cargo is in order.
If the examination indicates that the cargo is not suitable, contact the administrative quality assurance
officer for further instructions.
Verify that gages, and temperature and water soundings have been taken and recorded. These figures
will be used to compare with those obtained at the loading point for indications of quality and quantity
Maintain close surveillance on products being moved from the vessel to shore tanks.
- Check the discharge line.
- Witness opening and closing of shore tank gages.
Verify that quantities received are based on shore tank gages.
Examine each barge cargo tank to determine if any government-owned product is ROB (Reserve on
- If no significant quantity of product remains, sign and retain a copy of the dry tank certification.
- Cargo tanks containing appreciable amounts of product will be gaged and the amount present
determined, if possible.
- Estimates will be made, if it is impossible to obtain accurate figures.
- An appreciable amount of product would normally be any quantity estimated at over 15 barrels on a
tanker and 5 barrels on a barge.
- Verify that all attempts have been made to strip the cargo tanks of product.
- Enter the quantities estimated as ROB, the cargo tank number, reason for incomplete discharge and
other pertinent information on the discharge report, DD Form 250-1. For barge discharges, a
notation of whether barge or shore pumps were used to discharge the cargo will be annotated.
Record shipping and handling losses/gains over 0.5 percent, at discharge destination, on DD Form 250-1
and indicate the cause for the loss/gain to fullest extent possible.
Verify that required inspection documents are available.
- Completed DD Form 250-1.
- Ullage or innage report.
- Other documents that may be required IAW DOD 4140.25M (DOD Management of Bulk Petroleum
Products, Natuaral Gas and Coal Volumes I-IV)..
Distribute inspection documents IAW DESC directives or local instructions.