Wednesday, December 23, 2009

New American National Standard published: "Quantities and Procedures for Description and Measurement of Underwater Sound from Ships- Part 1: General

The Acoustical Society of America (ASA) announced the publication of a new, voluntary consensus standard for the measurement of underwater noise from ships. The new standard is known as ANSI/ASA S12.64-2009/Part 1, “American National Standard Quantities and Procedures for Description and Measurement of Underwater Sound from Ships- Part 1: General Requirements”.

It is the first ASC S12 noise standard concerned with underwater sound and it is the first known civilian standard in the world for measuring the underwater sound from ships. The standard details requirements for instrumentation, measurement procedure, and data post-processing necessary to quantify a ship’s underwater radiated noise level referenced to a normalized distance of 1 meter.

S12/Working Group 47 is chaired by Michael Bahtiarian of Noise Control Engineering, Inc., and its membership includes professionals from government, academia and industry from the US, Canada, the United Kingdom, Netherlands and Australia.

Tuesday, December 22, 2009

Coeliac Disease and Standards for Determination of Gluten Content

Proteins in wheat, barley and rye cause an autoimmune response in people with Coeliac Disease.

A. K. Akobeng & A. G. Thomas Department of Paediatric Gastroenterology, Booth Hall Children's Hospital, Central Manchester and Manchester Children's University Hospitals, Manchester, UK published a study of how much gluten a person with Coeliac Disease can tolerate. The report concluded "The amount of tolerable gluten varies among people with coeliac disease. Although there is no evidence to suggest a single definitive threshold, a daily gluten intake of less than 10 mg is unlikely to cause significant histological abnormalities."

In 1982, the Codex Alimentarius Committee on Nutrition and Food for Special Dietary Uses (CCNFSDU) established labeling standards in its Standard for Gluten-Free Foods. These references provide some additional context in the labeling of foods in the US: Proposed Rule: Gluten-Free Labeling of Foods January 23, 2007 Questions and Answers on the Gluten-Free Labeling Proposed Rule January 23, 2007.

Dozens of international standards for the determination of gluten in wheat and wheat flour are available. The International Standards Organization, ISO Technical Committee 34 is responsible for standardization in the field of human and animal foodstuffs. ISO/TC 34 Food Products Subcommittee SC4 is concerned with Cereals and Pulses.

100 Q&A About Celiac Disease and Sprue: A Lahey Clinic Guide (100 Questions & Answers About) paperback available from Amazon.

Long Island Press Gluten Free: Millions Have Celiac, Few Diagnosed The disease that has many sick Americans going against the grain By Jaclyn Gallucci on Apr 15th, 2010s

Thursday, December 17, 2009

ANSI/NEMA MW 1000-2008, Revision 1-2009 Magnet Wire

ANSI/NEMA MW 1000-2008, Revision 1-2009 Magnet Wire. MW 1000, is available from ANSI. NEMA MW 1000 provides general requirements, product specifications, and test procedures for magnet wire. This revision updates MW 1000-2008, which was published in March 2009. According to NEMA the revised publication features significant updates, including:
  • Substantive changes to several test procedures in order to better define the equipment, materials, or test conditions that these procedures specify.
  • Amended tests include the bond strength test procedure, the transformer oil resistance and hydrolytic stability test, and the high voltage continuity test
  • New Appendix E, “General Rules for Rectangular Wire Dimensions”
  • New definitions
  • Reorganized table of requirements for bare rectangular wire
  • Updated requirements and specifications
Feeds of new NEMA standards are an easy way to stay up to date with changes to standards that you rely on.

Demonstrating the Value of Standards

There were two articles in the news recently that illustrate the value of standards. Being standards people and consumers we understand the issue of compatability when our wall chargers are for 110 volt outlets and we are traveling outside the US or when we have a closet full of phone chargers and power supplies with different output voltages and a bewildering assortment of plugs and connectors.

One article shows how important standards are in assuring consumer satisfaction and the other shows that a proprietary standard led to a costly retrofit and a cybersecurity breach. One other point raised by the first article is that without standards, and voluntary compliance, the government can and does step in and occasionally makes laws when an industry doesn't govern its own behavior.

So for your reading enjoyment: US Moves to Ban Excessively Noisy TV Advertisements; and a matter of far more than inconvenience, Insurgents Hack US Drones pointing out that encrypting the video feeds was more difficult because [the drones'] "communications technology is proprietary, so widely used encryption systems aren't readily compatible, said people familiar with the matter."