Government Update Oily Water Separators Dennis L. Bryant, Senior Counsel, Holland & Knight LLP Pogo first uttered the immortal truth: "We have found the enemy and they is us!" The maritime industry is slowly coming to the conclusion that the cause of the numerous illegal discharges of oily bilge water is not a cabal of blackhearted chief engineers, but the very device that was first installed to resolve the problem -- the oily water separator (OWS). Waste liquids naturally accumulate in the bilges of ships. Improved maintenance and closer attention to detail can reduce (but not eliminate) such accumulation. Part of those waste liquids consists of oil. To prevent the waste liquids from overwhelming the cargo spaces and the engine room, the bilge water and mingled liquids were traditionally discharged over the side and into the ocean. As shipping became somewhat more environmentally conscious, the OWS was developed to filter most of the oil out of the bilge water before the bilge water was pumped overboard. The OWS was first mandated for installation on ships by the International Maritime Organization (IMO) in 1974. At the same time, a requirement was established for maintenance of an oil record book (ORB) to keep track of use of the OWS and disposal of the ship's oily waste. The OWS was originally designed to reduce the oil in discharge water to 100 parts per million. Ships could discharge waste water that contained up to that level of oil so long as the ship was underway, at least a certain distance offshore, and not in a particularly sensitive area. The equipment operated reasonably well and the program was largely self-enforced. Life was good. Actually, there are three separate methods for a ship to legally dispose of waste oil: (1) burning on board, (2) transfer to an appropriate facility ashore, and (3) discharge into the ocean through a properly operating OWS. Use of the OWS is clearly the preferred method among shipboard personnel. The oil record book provides for detailed entries of oil accumulated and stored, as well as the time, place, and method of any and all disposals. Totals are supposed to match, but this is difficult as measurements, particularly of liquids in storage tanks on a ship at sea, are rough estimates at best. In 1992, though, the discharge standard was strengthened to 15 parts per million. Problems surfaced immediately. The OWS equipment was not operating properly. Filters regularly clogged and discharges ceased Dennis L. Bryant, Senior Maritime Counsel at the law firm of Holland & Knight, Washington, D.C., is a contributing editor of MR/EN. For additioal information contact Dennis at email@example.com frequently. Meanwhile, waste water levels in the bilges were rising. It turned out that many OWS manufacturers had merely fine-tuned their old 100 ppm devices to achieve the new 15 ppm requirement. This was easily done on a test platform in the factory, but frequently failed on a ship at sea. Life was no longer good, at least for chief engineers, who had to manage this problem while keeping the ship operating. There are other, more basic problems, though. For many years, governments and ship operators only paid lip service to OWS operation and oil record book entries. Waste oil was routinely discharged at sea and few seemed to care. Chief engineers were under constant pressure to keep operating costs down. One method utilized was to ignore maintenance of the OWS. When the OWS wasn't working properly or when the filter needed replacing, the system would be circumvented. This could be done either through use of a bypass pipe to divert the discharge around the sensor unit or by adding non-oily flush water to artificial- Take Command of Your Career ® 14 Your experience may qualify you for a seagoing career with Military Sealift Command. In the next several months, Military Sealift Command will be hiring Civilian Mariners for Federal employment. The following positions are in our Deck, Engine and Medical Departments: 3rd Officer 3rd Assistant Engineer Able Seaman Ordinary Seaman Wiper Refrigeration Engineer Deck Engineer Machinist Pumpman Unlicensed Junior Engineer 1st Radio Electronics Technican 2nd Electrician Medical Services Officer If you are interested in a career that offers on-the-job training, advancement opportunities, steady pay and Federal benefits, visit our Web site at www.sealiftcommand.com/MR or call 1-888-228-5509 to speak with a recruiter. MSC IS AN EQUAL OPPORTUNITY EMPLOYER AND A DRUG-FREE WORKPLACE. Maritime Reporter & Engineering News
You don't have Macromedia Flash Player installed.
This content requires the Macromedia Flash Player.