Conference Paper - This paper describes the requirements of the standard, additional inspection points, and several uses of the standard in the field where clear specification language was imperative to successful project completion. NACE 5/SSPC-SP 12 standard confined to water jetting - which makes use of ultra-high pressure water that is nonabrasive. Four levels of visible post-cleaning condition and three levels of non-visible condition are defined.
Field observations and laboratory test results for several different fire sprinkler failure investigations conducted in the past several years in a variety of locations across the US. Field experience with assessment data, basis for diagnosis, mitigation and rehabilitation recommendations to prevent recurrence are presented.
In November 2011 a 5 month old baby unfortunately got killed in a Dutch swimming pool because 2 speakers and a speaker frame landed on her head. This paper will describe how this accident could happen and what has been done in the Netherlands since 2001 when the entire ceiling and airchannels came down in another swimming pool (luckily this occured during closing time).
Model building codes and standards have begun adopting new energy efficiency requirements for building envelopes, including more quantifiable assessment of the air permeance characteristics of the materials and assemblies used in the building envelope. This research effort was initiated to understand and quantify the air leakage mechanisms of single wythe concrete masonry construction, which is commonly used in exterior building envelopes.
Research conducted at OakRidge National Laboratories in Oak Ridge, TN, National Research Council Canada, and many other institutions around the world have shown that controlling airflow through the building envelope is more important and effective in reducing heat loss and moisture transport than controlling vapor diffusion.
This document discusses the issues to be taken into consideration with respect to accounting for corrosion on steel piles in non-marine applications. The rate of corrosion, design life and methods of corrosion control are discussed in a manner to provide the reader with guidance as to how to proceed with determining these factors. This standard is applicable to pipe piles, sheet piles, H piles, and other steel piles.
This standard is intended for use by coating or lining specifiers, applicators, inspectors, or others who require the use of pressurized water cleaning technology to achieve a defined level of visual cleanliness of concrete surfaces. This standard contains requirements for Thorough Cleaning. Requirements for Light Cleaning are addressed in a separate standard.
Coating/lining manufacturers and/or facility owners frequently specify cleaning and roughening of the concrete surface prior to product installation. The specifications may reference qualitative methods including visual assessments using comparison coupons or quantitative methods including surface profile depth measurements. However, prior to this Technical Report, there was no known data to inform a conversion between qualitative and quantitative methods. The outcomes of this Technical Report enable coating manufacturers, engineers, specifiers, and contractors to convert well-established qualitative methods to quantitative values based on an interlaboratory experiment. While current quantitative methods can measure up to 6 mm (250 mils), extremely rough concrete surfaces (exceeding ~1.5 mm, or ~50 mils) were not included in the experiment due to the inability to stabilize the instrument probe and obtain accurate data.
This report explains different types of corrosion phenomena and contributing factors of corrosion that can occur in fire protection systems (FPS), such as water corrosivity, MIC, trapped air (wet systems), residual water (dry systems), and pipe weld corrosion. The basis for selection of corrosion mitigation strategies for corrosion mitigation and management of FPS are also discussed.
Corrosion that results in pipe leakage or obstruction is the most significant issue for owners of water-based FPS or fire sprinkler systems, in terms of both cost and system reliability. Corrosion damage/products and mineral deposits can impair the effectiveness of sprinkler systems, leaving facilities vulnerable to uncontrolled fire loss even though they are equipped with fire protection systems. This report describes practices that have been successful in mitigating FPS corrosion.
The City Public Service Board of San Antonio, Texas (CPS Energy) is the largest municipally owned gas and electric utility company in the nation. CPS Energy owns a fleet of power generation plants with a combined output of over 4,500 MW. In 2011, CPS initiated an Asset Corrosion-Protection Program for its power generating facilities to proactively protect its assets from coating degradation and premature corrosion.