arpadveress 
QUESTION: Are there any requirements for an IECEx Certification Body, ExCB, to be able to include IEC TS 60079-46 within their scope of IECEx acceptance to issue IECEx Certificates of Conformity?
ANSWER: Yes, an ExCB shall comply with the following:1. Have ISO 80079-36 and ISO 80079-37 within their scope prior to being able to issue IECEx Certificates according to IEC TS 60079-46.
2. In accordance with IECEx 02 rules and OD 009, IECEx Certified Equipment Scheme, Procedures for the Issuing of IECEx Certificates of Conformity, IECEx Test Reports and IECEx Quality Assessment Reports ExCBs, ExCBs can only accept IECEx Certificate applications for assemblies where the ExCB has all Ex protection techniques, associated with the Equipment Assembly, within their scope.
3. Certificate information and Marking requirements shall be in accordance with IEC TS 60079-46.
4. The following standards are the only standards to be identified on a Certificate involving IEC TS 60079-46, with supporting ExTRs to also be generated:
a. IEC TS 60079-46 must always be identified.
b. IEC 60079-0 must always be identified (as it is required for both electrical and non-electrical evaluations).
c. ISO 80079-36 would only be identified if the assembly includes non-electrical ignition sources.
For assemblies that do not include any non-electrical ignition sources, the Certificate need not state in so many words that there were no non-electrical ignition sources. The identification of IEC TS 60079-46 on the Certificate, and lack of identification of ISO 80079-36 on the Certificate, is a clear enough statement that there were no non-electrical ignition sources (as IEC TS 60079-46 requires the evaluation of all electrical and non-electrical ignition sources).
Note 1: The performance of an ignition hazard assessment (IHA) according to ISO 80079-36 that results in a determination that there are no non-electrical ignition sources would be detailed under 6.4 of the IEC TS 60079-46 ExTR. There would not be a need for a separate ISO 80079-36 ExTR..
Note 2: In accordance with 5.2.2 of IEC TS 60079-46, “Specific Conditions of Use that are related to items of equipment forming the equipment assembly, that are not satisfied in the equipment assembly, but able to be satisfied in the end-user site installation, shall be included or addressed, on the equipment assembly certificate”.
source: IECEx ExTag
What is an equipment assembly?
pre-manufactured combination of Ex Equipment, together with other parts as necessary, that are electrically or mechanically interconnected that are pre-assembled prior to being placed into service at the end-user site, and that can be disassembled and then re-assembled at the end-user site.
So any pump station, skid and more shall be assembly certified? Yes.
What is an equipment assembly certificate?
document that conveys the assurance of the conformity of an equipment assembly with specified requirements
Note: The equipment assembly shall be verified for suitability against the requirements of this document, IEC 60079-0, IEC 60079-14 and ISO 80079-36 as applicable
Keep up good work!
Arpad
