Reader response

Band control The solution submitted in the December issue titled "Band Control" is a good idea. US Patent # 4,746,011 was issued to me on May 24, 1988, for this safety problem solution. I'd like to point out that the idea that was submitted had been tried during development, but we found the results were still too chancy and it was difficult to use.

02/15/2003


Band control

The solution submitted in the December issue titled "Band Control" is a good idea. US Patent # 4,746,011 was issued to me on May 24, 1988, for this safety problem solution. I'd like to point out that the idea that was submitted had been tried during development, but we found the results were still too chancy and it was difficult to use. I'd hate to see someone get hurt using something they think will protect them.

The patent covered a variety of designs, but what we finally settled on was a piece of moderate weight canvas drop cloth large enough to drape over all four edges of the package. We sewed a piece of light chain into a hem in the perimeter of the cloth. The chain made it easy to throw over a load (like casting a bait net) but still light and not too stiff to handle. The chain kept the cloth from slipping and was very effective at stopping the strap dead. It was considered a safety device and as such was kept stowed always conveniently close to where packages were opened. — Sam McNair

Data mining

I was very surprised at your December article about data mining as it applies to maintenance. The cost of implementing such a program would far outweigh the cost saving. Such a system is only as good as the data collected and then only as good as the person collecting the data. It's not a good idea to have valuable maintenance men going around collecting all day. It's hard enough making sure the work orders are being done and not being copied from last week's PM's. Besides, any good maintenance manager knows cost, when, and where his downtime is coming from. — Joseph J. Veverka

Pump reliability references

PLANT ENGINEERING neglected to include the following references with the December article on "Improving Pump Reliability."

1. Bloch, H.P. and Geitner, F.K., An Introduction to Machinery Reliability Assessment , 2nd ed., Gulf Publishing Co., Houston, TX (1994).

2. R. Barry Erickson, Eugene P. Sabini, Anthony Stavale, ITT Industries%%MDASSML%%Goulds Pumps, Hydraulic Selection to Minimize the Unscheduled Maintenance Portion of Life Cycle Cost , 1998

3. Dr. Lev Nelik, ITT Industries %%MDASSML%% Goulds Pumps, Bearing Life Extension and Reliability Features of Modern ANSI Pumps , The 2nd International Conference on Improving Reliability in Petroleum Refineries and Chemical and Natural Gas Plants, 1993.





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Salary and career survey: Benchmarks and advice; Designing controls; Remote data collection, historians; Control valve advances; Hannover Messe; Control Engineering International
System integration: Best practices and technologies to help; Virtualization virtues; Cyber security advice; Motor system efficiency, savings; Product exclusives; Road to Hannover
Collaborative robotics: How to improve safety, return on investment; Industrial Internet of Things, Industrie 4.0: World views; High-performance HMI, Information Integration: OPC and OMG
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
PLCs, robots, and the quest for a single controller; how OEE is key to automation solutions.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Getting to the bottom of subsea repairs: Older pipelines need more attention, and operators need a repair strategy; OTC preview; Offshore production difficult - and crucial
Digital oilfields: Integrated HMI/SCADA systems enable smarter data acquisition; Real-world impact of simulation; Electric actuator technology prospers in production fields
Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors
click me