A small addition to Nick's excellent summary of the Routes to Compliance:

The TCF route can also be used when Harmonised Standards exist, but the
manufacturer chooses not to (or can't) use all (or any) of them.

Cheers,

--------------------------------------------------------------------------------------------

   Carlos A J Perkins
   Compliance Manager
   MEI
   Eskdale Rd. Winnersh Triangle
   Wokingham, Berks, RG41 5AQ UK
   Mobile:  07818 456961
   Tel :      +44 (0) 118-944-6461
   Fax :     +44 (0) 118-944-6412
   Email : [email protected]
   www.meiglobal.com

---------------------------------------------------------------------------------------------







Please respond to Nick Williams <[email protected]>


To:     [email protected]
cc:      (bcc: Carlos A. Perkins/WIN/Effem)
From:   Nick Williams <[email protected]> on 02/03/2000 11:58

Subject:  Re: Technical Construction File






There seems to be come confusion on the matter of technical files and
technical construction files, and referring to the text of the CE
mark directives, it's not difficult to see why since there is no
consistency in the way in which the terms are used. My understanding
is as follows.

1.With the exception of the EMC Directive, all CE mark directives
require the Responsible Person to compile a file of documentation
which demonstrates how the manufacturer justifies their claim of
compliance with the requirements of the relevant directive.

2. This collection of documentation is known variously as a Technical
File or a Technical Construction File. Except in the EMC Directive,
these terms seem to be used interchangeably to mean the same thing.

3. There is no provision in any directive to require that the
information relevant to compliance with one directive need be kept
separate from that for any other and therefore in most cases a
combined technical file which covers compliance with all directives
(and lots of other information) makes sense from an organisational
point of view.

4. Under the EMC Directive, a manufacturer has three options for
compliance. These are the Standards route, the Technical Construction
File route and the Type Approval route.

5. Under the Standards route, the manufacturer simply claims
compliance with the requirements of the relevant harmonised
standards, and thus with the requirements of the directives. While he
would, in most cases, be foolish to do this without having some
documentary evidence that tests have been completed and passed, this
is not mandated under the Directive.

6. Under the Type Approval route, the manufacturer gives the product
to a suitably qualified test house who test it and issue a
certificate of compliance. This method of complying with the
directive is primarily intended for communications (transmitting)
apparatus and therefore the new R&TTE Directive will have a major
bearing on much equipment which has formerly followed this route.

7. The Technical Construction File (TCF) route to compliance with the
EMC Directive is intended for use in those situations where the other
two routes do not apply. This will be either because the apparatus is
not transmitting apparatus, or because there are no appropriate
harmonised standards.

8. Under the TCF route, the manufacturer creates a justification for
a claim of compliance with the requirements of the EMC Directive
based on such factors as the location and use of the equipment, the
results of any tests which have been done and the requirements of any
standards which are relevant, if only in part.

9. The key point about the EMC directive's TCF is that for it to be
used as the basis of CE marking a product, the file must be submitted
to a Competent Body (a term defined in the directive and distinct
from a Notified Body) who must examine it and agree to the logic used
to justify the claim of compliance. Thus, the TCF route to complying
with the EMC directive is NOT a self-certification process.

10. To cloud the matter even further, there is a (complicated)
provision within the Machinery Directive which allows for a
manufacturer to involve a notified body in the creation and storage
of the Technical File for certain machinery. This really only has
relevance in the context of annex IV machines which require type
approval (etc.). I don't know of any situation where such a provision
has been applied, and it's a mystery to me and to several other
people I have spoken to about this subject as to quite what the
Commssion was thinking when it drafted this section of the directive.

As I mentioned at the beginning, the EC have done us no favours in
being muddled about the terminology they apply in the different
directives, but it is important to understand that the TCF specified
under the EMC Directive has a quite distinct and different legal
status to the technical documentation requirements of the other
directives.

Hope that helps!

Nick.


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