Chemical Engineering January 2017 - 51

quirements of bioprocessing, but
much of its content can be utilized
across the wide-ranging applications
of other high-purity needs. Information
on the standard can be found in Ref. 4.
The International Organization for
Standardization (ISO). This organization
publishes the group of 14644
standards mentioned earlier, along
with many others that can be found
in Ref. 5.
Semiconductor Equipment and
Materials International (SEMI).
This organization has a wide range
of standards and specifications that
cover the high-purity manufacture
of silicon wafers, integrated circuits,
printed circuit boards and flat panel
devices. Such standards can be
found in Ref. 6, but the most relevant
of those standards pertaining to our
discussion here are those identified
in the following:
* Process chemical standards carrying
the prefix C: among other
things, these standards provide
guidance and specifications for
the selection and use of liquid
chemicals used in the semiconductor
industry
* Gas standards carrying the prefix
C: as with process chemicals,
these standards provide guidance
and specifications for the selection
and use of gases used in the
semiconductor industry
* Facility standards carrying the
prefix F: these standards not only
provide guidance for airborne molecular
contaminant levels in clean
environments they also provide
guidance and specifications for
allowable particle specification for
gases, guidance on electrostatic
charge, and many other criteria
for pipe and tubing.
Institute of Environmental Sciences
& Technology (IEST). This
organization has a listing of standards
and recommended practices
focused on high purity that can be
found in Ref. 7.
Final remarks
Manufacturing and fabricating highpurity
components and equipment is
a highly specialized field that requires
technically qualified and disciplined
personnel and procedures at all levels.
It is suggested that when looking
2672 S. La Cienega Blvd, Los Angeles, CA 90034 USA
(800) 336-1942 (310) 839-2828 www. tekleen.com info@tekleen.com
Circle 21 on p. 62 or go to adlinks.chemengonline.com/66424-21
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JANUARY 2017
51
for providers or submitting request
for quotation (RFQ), rather than segregate
and determine providers on
price alone, the decision process
should address the thoroughness of
a company's written quality management
system (QMS) and adherence
to that program. It is also recommended
that the provider's experience
be a factor in the selection process.
The ability and craftsmanship
needed for a manufacturer or fabricator
to perform and control such
high-performance work is not a craft
that is learned overnight.
n
Edited by Gerald Ondrey
References
1. Jonas, Wayne B., " Mosby's Dictionary of Complementary
and Alternative Medicine, " Elsever Health Sciences,
Amsterdam, the Netherlands, 2005.
2. U.S. General Services Administration, Preparing Activity:
GSA-FSS, FSC 3694, Washington, D.C., 2001.
3. The piping material in the photos is GF Piping Systems'
Sygef Standard and Sygef Plus PVDF pipe and fittings,
which are produced using Kynar resins.
4. ASME BPE,
www.asme.org/products/codes-standards/bpe-2014-bioprocessing-equipment.
5.
ISO, www.iso.org/iso/home/store/catalogue_tc/catalogue_tc_browse.htm?commid=54874.
6.
SEMI, www.semi.org/en/store/P001204.
7. IEST, www.iest.org/Standards-RPs/RecommendedPractices.
Author
William
M. (Bill) Huitt has been
involved in industrial piping design,
engineering and construction since
1965. Positions have included design
engineer, piping design instructor,
project engineer, project
supervisor, piping department supervisor,
engineering manager and
president of piping consulting firm
W.M. Huitt Co. (P.O. Box 31154, St.
Louis, MO 63131-0154; Phone: 314-966-8919; Email:
mhuitt@aol.com; URL: www.wmhuittco.com), which he
founded in 1987. His experience covers both the engineering
and construction fields crossing industry lines to
include work on petroleum refining, chemical, petrochemical,
pharmaceutical, pulp & paper, nuclear power,
biofuel and coal gasification. In addition to writing numerous
specifications, guidelines, papers and magazine articles
on the topic of piping design and engineering, he has
also authored " Bioprocessing Piping and Equipment Design
- A companion guide for the ASME BPE Standard, "
which is considered the companion guide on the ASME
Bioprocessing Equipment standard. Huitt is a past member
of ISPE and CSI, and is a current member of ASME. He
is a member of the B31.3 section committee, B31.3 Subgroup
H on High Purity Piping, a member of four ASMEBPE
subcommittees and several Task Groups, ASME
Board on Conformity Assessment for BPE Certification
where he serves as vice chair, a member of the API Task
Group for RP-2611, and he serves on two corporate
specification review boards. Huitt also authored the training
program and provides training to ASME consultants
wishing to audit applicants for ASME BPE Certification.
Why should you
filter your water?
Scale formation reduces
the heat transfer rate
and increases the water
pressure drop through
the heat exchanger and
pipes. In fact, one study
has shown that .002 "
fouling will increase
pumping needs by
20%.
http://www.semi.org/en/store/P001204 http://www.iest.org/Standards-RPs/Recommended http://www.wmhuittco.com http://www.asme.org/products/codes-stan http://www.iso.org/iso/home/store/catalogue_tc/cata http://www.tekleen.com http://adlinks.chemengonline.com/66424-21 http://WWW.CHEMENGONLINE.COM
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