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General Experience

Messrs Raupuk and Sharkins of ESI have worked together for more than 21 years, accumulating experience in support of shipboard pollution abatement systems.

We have interacted extensively with the U.S. Navy, U.S. Coast Guard, Military Sealift Command (MSC), several commercial concerns (both domestic and abroad),and foreign government activities.

ESI's talents are well demonstrated by the following illustrations of our capabilities relevant to the proposed technology development:

Developed the performance specification (MIL-PRF-32217) for shipboard soil drain scale prevention products and systems.

The specification covered necessary safety and health, design, test and evaluation, verification, and acceptance criteria requirements. This effort included reviewing and resolving all comments by commercial concerns, naval shipyards, NSWCCD and other government agencies.


Developed a novel procedure and implemented it by chemically cleaning the soil system piping on several ships equipped with collection, holding, and transfer (CHT) gravity soil system piping as well as vacuum CHT (VCHT) soil system piping.

Vessels ranged from small commercial yachts to Navy aircraft carriers. Our chemical cleanings were performed safely, efficiently and with minimal impacts on ships mission and forces. We often worked around ongoing shipboard activities and other contractors' efforts (unlike many others) allowing the cleaning efforts to proceed timely and cost effectively.


Surveyed, described and compared all alternative wastewater vacuum systems and components manufactured both within and outside the U.S. Recommendations were made to NSWCCD to facilitate selection of vacuum generating equipment for future ship designs


Surveyed and identified alternate sanitary fixture flushometers to those currently being used on Navy ships.

This NSWCCD-sponsored task included reviewing commercial and military specifications, conducting a market search and assembling a matrix of available flushometers detailing price, flush volumes, installation requirements, certifications, construction materials, and other salient features.


Developed a Uniform Industrial Process Instruction (UIPI 5281-450) as well as a draft DOD Standard Practice (MIL-STD) for Chemical Cleaning of Soil System Piping on U.S. Navy Surface Ships. Also, reviewed and provided recommendations to update the Navy's Standard Work Template for this chemical cleaning.

These efforts required a thorough knowledge of shipboard soil piping systems ranging from small patrol boats to aircraft carriers. Innovative procedures and associated hardware were identified to achieve efficient and safe soil piping systems' chemical cleanings. Also, this undertaking required reviewing and resolving all comments by naval shipyards, NSWCCD and other government agencies.


Designed and managed the assembly and installation of a neutralization system to treat highly acidic flue gases emitted from the medical waste incinerator installed at Andrews Air Force Base.

This system employed a wastewater-powered eductor and permitted continued use of the incinerator in lieu of costly other alternatives to process the hospital medical wastes.


Updated/prepared Commercial Item Descriptions (CID) for vacuum water closets, vacuum interface valves, liquid level sensors and a vacuum leak detection device.


Updated/prepared numerous technical and ILS documents supporting shipboard environmental protection systems including technical manuals, technical reports, engineering drawings, engineering change proposals, troubleshooting guides, maintenance packages, procurement specifications, operating procedures, parts lists, training guides, and certification checklists.


Designed and assembled wastewater treatment and support equipment including a seawater-powered eductor, sewage aspirator, automatic urinal flushometer, urinal vacuum interface valve, sewage vacuum system training modules, control panels, etc.
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