Ref. Ares(2018)4258098 - 16/08/2018 EUROPEAN COMMISSION  DIRECTORATE-GENERAL FOR ENERGY  Directorate E- Euratom Safeguards  The Director Luxembourg,  DG ENER E.1 SV/bk Ares(2018)  Dear Sir/Madam,  The European Commission, Directorate General for Energy, (referred to below as  the  contracting authority ) is planning to award the contract(s) resulting from the above  procurement procedure. The procurement documents consist of the contract notice, this  invitation letter, the draft contract(s) and tender specifications with their respective annexes.  All documents are available at the following TED e-Tendering website$^{1}$: https://etendering.ted.europa.eu/cft/cft-display.html?cftId=3988  Economic operators interested in this contract are invited to submit a tender in one of the  official languages of the European Union. Tenders must be submitted exclusively via the electronic submission system (e-Submission)  available from the above website$^{2}$. Tenders submitted in any other way (e.g. e-mail or by  letter) will be disregarded.  In order to submit a tender using e-Submission, tenderers (each member of the group in the  case of a joint tender) will need to register in the European Commission's Participant Register - an online register of organisations participating in EU calls for tenders or proposals. On  registering each organisation obtains a Participant Identification Code (PIC, 9-digit number)  which acts as its unique identifier in the above register. Instructions on how to create a PIC  can be found in the PIC-management Quick Guide for Economic Operators. Tenderers  already registered in the Participant Register shall reuse their existing PICs when preparing  tenders in e-Submission. 1 Subscription to the call for tender at the above link allows interested economic operators to receive e-mail  notifications when new information or documents are published. Subscription is free of charge and does not  involve any commitment to submit a tender. $^{2}$ For detailed instructions on how to submit a tender please consult the e-Submission Quick Guide available at:  https://webgate.ec.europa.eu/esubmission/assets/documents/manual/quickGuide_en.pdf. In case of technical  problems, please contact the e-Submission Helpdesk (see contact details in the Quick Guide) as soon as possible.  1. Submission of tenders.  Subject:  Invitation to tender ENER/E1/2018/11-01  Title:  Supply contract regarding the manufacturing, assembling, delivering and  support of a Passive Gamma Emission Tomography System (hereinafter  referred to as “PGET”) to be used for verification of spent fuel assemblies  from Light-Water Reactors 