Hazardous Areas Blog

Conformity Assessment – ATEX Documentation

The requirements for Conformity Assessment are listed in AS/NZS 60079.14:2017 Appendix ZD. The requirements for an ATEX certification are listed in Clause ZD6 North American Documentation. The following documents or items are critical to the successful compilation of a conformity assessment for CSA/UL/FM Certified Equipment. Assessment to these requirements can be time consuming and does not always have the same degree of traceability that ATEX certifications do. A worked example of a CAD for a UL certified motor is used to demonstrate the process, but the requirements are similar for CSA or FM.

Sample of the Equipment or High Resolution Photographs

High resolution photographs of all certification details are required, including:

Note that this motor carries both UL and CSA markings. It is therefore Dual Certified.
Complete Model Number: CEM7054T-I; Frame Size 254TC
Certification marking: Class I, Division 1, Groups C & D; Group IIB & IIA; T3C; IP55
Certificate Class: ELECTRIC MOTOR FOR HAZARDOUS AREAS
Maximum Continuous Ambient Temperature: 40°C

Note that, in this case, a Certificate Number has not been marked. This is not unusual and requires some detective work to determine, with any certainty, what it is. Always contact the original manufacturer to obtain the correct certificate.

For the purposes of this exercise, the certificate number for this motor was eventually confirmed to be:

UL 201141214-E6951 (or simply, E6951 when referred to in the manufacturer’s literature)

ZD6.1 UL DOCUMENTATION

UL Documentation

Quoting from AS/NZS 60079.14:2017 Clause ZD6.1:

“The UL Listing/certification program (see ‘UL Product iQ’) involves all the items for a Certification Scheme type 5 including type test and quality requirements through the compulsory factory surveillance program. This means that the evidence of a listing ( or occasionally a certificate) will enable the Standards used to be determined, allowing a Conformity Assessment Document to be prepared. In all cases the testing will be conducted by UL. As there is no relaxation of the factory surveillance permitted, it is accepted that this is integral and current, for the Listing to remain valid. It is important that variations in installation, inspection, maintenance and repair are identified and highlighted in the Conformity Assessment Document.”

The following link points to the UL IQ Database. https://iq.ulprospector.com/en/.

Motor Model and Frame Size – Traceability to Certification

Using the UL Prospector link to the UL Certificate Database, search by:

KEYWORD using “Motors for Use in Hazardous Areas”, and
COMPANY NAME, initially using “Baldor” and then selecting “Baldor Electric Co”.

The following records become available:

The other entries have catalogue numbers that do not align with the marking label, so choose PTDR.E6951.

BALDOR ELECTRIC CO	E6951
5711 RS BOREHAM JR ST
FORT SMITH, AR 72901-8301 USA

Class I, Group C and D; Class II, Groups E, F and G motors for use with voltage source, current source and pulse width modulated variable frequency inverter drives over the frequency range of 1 to 120 HZ.
Class I, Group D; Class II, Groups E, F, and G motors with Listed brakes. The brakes in these explosion-proof and dust ignition proof assemblies are intended essentially for holding purposes and may be used for stopping light inertia loads.
Class I, Group D; Class II, Groups F and G motors for use with pulse width modulated variable frequency inverter drives over the frequency range of 6 to 90 HZ .
Class I, Group D motors for use with voltage source, current source and pulse width modulated variable frequency inverter drives over the frequency range of 0 to 120 HZ .

From the above, the hazardous areas are the same as those on the marking label. The resulting UL Certificate Number is E6951.

The Certificate of Compliance is the document that was required to start the assessment:

The mechanics of comparing UL674, to which the motor was certified by UL, to AS/NZS 60070.0 &.1 are not part of this instruction regarding the required documents for a UL to AS/NZS CAD, just the required reference documents that shown traceability.

A further importing item of information was gleaned from the Baldor Catalogue, which is provides the CSA certificate number. See the justification from the example CAD on the following page. There are times when information on datasheets can tie two certifications together. Note that the above UL certificate has no temperature classification allocated, but the parallel CSA certificate (next page) does.

ZD6.2 FM documentation

Quoting from AS/NZS 60079.14:2017 Clause ZD6.2:

“The FM Certification program involves all the items for a Certification Scheme type 5 including type test and quality requirements through the compulsory factory surveillance program. This means that the evidence of a Certificate of Approval or Certificate of Compliance will identify the Standards and allow a Conformity Assessment Document to be prepared. In all cases the testing will have been conducted by FM. As there is no relaxation of the factory surveillance permitted, it is accepted that this is integral and current, for the Certificate to remain valid. It is important that variations in installation, inspection, maintenance and repair are identified and highlighted in the Conformity Assessment Document.”

CSA have a certification database, which allows the end user a CSA Certified items, to check its credentials on line, and to confirm in detail whether the item is or is not CSA certified:

https://www.csagroup.org/testing-certification/product-listing/

Proceed as per UL CAD example – similar documents required.

ZD6.3 CSA documentation

Quoting from AS/NZS 60079.14:2017 Clause ZD6.3:

“The CSA Certification program involves all the items for a Certification Scheme type 5, except it may be necessary to verify if CSA has conducted all the testing or can accept the Test Report used under the terms of their accreditation. The North American compulsory factory surveillance program is also applied in Canada. This means that the evidence of a Certificate of Compliance will identify the Standards used and allow a Conformity Assessment Document to be prepared. As there is no relaxation of the factory surveillance permitted, it is accepted that this is integral and current, for the Certificate to remain valid. It is important that variations in installation, inspection, maintenance and repair are identified and highlighted in the Conformity Assessment Document.”

Factory Mutual Approvals have a certification database, which allows the end user of an FM approved item, to check its credentials on line:

https://www.approvalguide.com/CC_host/pages/custom/templates/FM/index.cfm?line=-1

This will require the user to sign up (for free) to this site.

Proceed as per UL CAD example – similar documents required.

This material is produced by HAZ. The information is of a general nature only and should not be relied upon. Each set of circumstances associated with compliance of hazardous areas and Type B compliance is unique and expert advice on your particular circumstances should be sought. HAZ accepts no liability for any reliance on the information published on this website.