Charlie, et al,
I have worked with manufacturers of semiconductor equipment
and have found that NFPA79 is quite useful. As has been mentioned, Semi-S2
etc. applies to this equipment but this is not a certification standard
accepted by AHJ inspectors in the USA.
For manufacturer's who don't want to go thru all the expense
of getting a custom designed product Listed to 61010-1 (but design the
product to be in compliance with the needed requirements) a Field Labeling
to NFPA79 is a straightforward way to demonstrate compliance to the AHJ
inspector for installation within the US. The inspection and Field Labeling
is usually done by a local contractor (perhaps a NRTL test house) at the
installation. The manufacturer may also ask for a plant inspection and a
NFPA79 Report to assure themselves that the machine complies, as part of the
S2 evaluation.
Further, NFPA79 is harmonized with IEC/EN 60204, electrical
safety of machinery. Being able to show compliance with NFPA79 allows the
manufacturer to claim compliance to 60204 within their technical file as
part of the CE marking requirements. Marking as compliant to NFPA79(/60204)
has been used by manufacturers as part of their CE marking process.
Additionally, within the US, many manufacturers have their
electrical panels assembled in a UL Panel Shop. The electrical panel shop -
sometimes a contractor or sometimes a captive shop - can apply their UL
Panel Shop certification sticker to the unit. This is further proof that
the key electrical installation is in compliance with US NFPA70 rules -
which are followed in harmonizing with NFPA79/60204. This eases the NFPA79
inspection and certification process when the product is assessed and
certified on-site, as required by most jurisdictions.
You would have to work thru all of the logic steps to show
that Euro designed equipment fully complies with American NFPA79
requirements. Common issues include adequate breaking capacity for
fusing/circuit breakers, etc.
Whether or not the scopes are carefully aligned (a legal
question) should not interfere with adopting such a practical scheme by
manufacturers to cover the needed certifications for worldwide acceptance of
this equipment.
:>) br, Pete
Peter E Perkins, PE
Principal Product Safety Engineer
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201 fone/fax
[email protected]
_ _ _ _ _ _
All
I'm trying to determine whether a product falls within scope of NFPA79 for
USA.
EU Machinery Directive determines whether a product is within scope by what
it does, but my reading of NFPA79 is that the latter also considers "what it
does it to".
Looking at the 2015 version, NFPA79, Chapter 3, section 3.3.54 defines
'Industrial Machinery' as:
" A power-driven machine (or group of machines working together in a
coordinated manner), not portable by hand while working, that is used to
process material by cutting; forming; pressure; electrical, thermal, or
optical techniques; lamination; or a combination of these processes.
Machine can include associated equipment used to transfer material or
tooling, including fixtures to assemble/disassemble, to inspect or test, or
to package. [The associated electrical equipment, including the logic
controller(s) and associated software or logic together with the machine
actuators and sensors, are considered as part of the industrial machine.]"
The product in question processes gases (in silicon wafer and flat panel
manufacturing plants) - so I don't think it processes "material".
If that is the case, it would be outside scope of NFPA79, and just within
scope of NFPA70. Comments?
regards
Charlie
Charlie Blackham
Sulis Consultants Ltd
Tel: +44 (0)7946 624317
Web:
<https://outlook.hslive.net/owa/redir.aspx?C=02be3bf3e3a544d1bdf7b6c99fbd12f
5&URL=http%3a%2f%2fwww.sulisconsultants.com%2f> www.sulisconsultants.com
Registered in England and Wales, number 05466247
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