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Existing US Navy Coefficient of Friction (CoF) meters are insensitive and cannot differentiate surfaces which have obvious differences in nonskid CoF. A new CoF meter, the m-Deck, was evaluated to determine CoF measurement effectiveness and temperature sensitivity. Both laboratory and field testing were performed over various nonskid systems at numerous temperatures. The results indicate that the m-Deck has significant temperature dependence, but also a high degree of accuracy. The collected data is used to establish acceptance criteria for newly installed nonskid.
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Structural, ballistic, and mobility requirements have led to the selection of aluminum alloy 2519 as the primary structural material for the Advanced Amphibious Assault Vehicle (AAAV). Two-year seawater alternate immersion exposures of welded AI 2519 panels with and without protective coatings were conducted to simulate the expected AAAV service environment.
Service life of any weapon system depends upon factors that impart long-term durability and robustness to its structure and subsystems, while sustaining its functional properties. The paper describes basic principles and guidelines on corrosion control and rules that could be easily followed to ascertain some specified service life and reduce total ownership costs.
Corrosion prevention and control for equipment is a costly and decreasingly effective activity for the Air Force, especially under scenarios to austere locations. One concept for remedy is a modular shelter, powered with mobile generators using integrated energy sources to reduce operational costs.
In the mid-1990s, the US Navy’s technical community, led by Naval Sea Systems Command (NAVSEA), recognized existing coatings used to protect the inside of ships’ tanks were failing on average 5-8 years after application. The high cost to blast and recoat over 11,000 tanks every 5-8 years, not counting submarines and aircraft carriers, was prohibitive. To address this issue, the Navy conducted a study to analyze the problem and decided to replace these legacy coatings with high solid epoxy coatings.1
The Hanford site contains approximately 55 million gallons of radioactive and chemically hazardous wastes arising from weapons production. This paper will present a Bayesian framework to model the probability of tank failures at Hanford and illustrate its use for tanks that are already known to have failed and leaked waste.
An effort was executed, to leverage the inherent benefits of polysiloxane coatings, to investigate, to assess or develop, and to implement an effective corrosion stain remover in the Navy with the focus of reducing both maintenance costs and time.
A device measuring solution resistance across a gold interdigitated electrode, surface temperature and relative humidity, dynamically monitors environmental parameters on board a naval ship over the period of 9 months. Rigorous statistical analysis is used to analyze solution resistance data.
Qualified U.S. Navy nonskid coatings are two-component (2K) epoxy-based systems that contain various sizes of aggregate. Once mixed, these highly viscous coatings are applied using a napless roller to generate a “peak and valley” profile that provides skid/slip-resistance when cured. The roll-application process is slow and inconsistent, and appearance is often determined by experience of the applicator.
This standard describes a method for evaluating the general qualifications of firms seeking accreditation under standards for contractor accreditation (hereafter “Qualification Program [QP] standards”).
This is not a standalone standard, as it is intended to be used in conjunction with other standards that incorporate it by reference. The purpose of this standard is to determine whether a contractor:
Keywords: coating contractor qualification procedure, accreditation of coating contractors, QP, field coating work, qualification procedure base, QP Base.
This standard provides guidelines for establishing minimum requirements for the protective coatings of ships exterior topsides and related structures exposed to the marine atmosphere. It covers coating materials, coating test protocol and acceptance criteria, surface preparation, coating application, quality assurance and control, and repair method.
This document is intended to guide shipowners/operators in the planning and execution of hull preservation of their vessels while in dry-dock. The standard is not exhaustive as there are so many variables, including type of vessel, condition, expected trading pattern, location of dry-dock, and shipyard capability. This standard is not designed to be a job specification for hull preservation, but rather as an adjunct to a shipowner’s specification.