1. by Fritz Szoncsó CERN HSE
Cable Controlling
by Fritz Szoncsó CERN HSE
EATM 15. August 2017
EDMS n.c.

2. Cable Controlling
- BA2/TT20/TCC2/TDC2 has revealed a high number of damaged cables
(with varying degree of criticality)
- If approved, BDF (PBC) related Civil Engineering work will require cables passing from TT20 to TDC2 to be re-installed (timeline LS3/LS4), thus a complete re-installation during LS2 is not considered the best option
- Conclusion from inspection:
Several cables are in bad shape and a certain clean-up is required (situation near BA2 is worst, TCC2/TDC2 most critical cables to be confirmed by concerned service and equipment groups)
- final conclusions of remaining life-time of cables are hard to take and the so far established analysis (chemical/mechanical tests) is not conclusive in terms of lifetime prediction.
EATM 15. August 2017
EDMS n.c.

3. Cable Controlling - Conclusions on short-term (TT20/TCC2/TDC2 focus):
2nd inspection together with concerned equipment/service groups during the YETS to identify how many cables need urgent replacement in order to ensure a safe and efficient operation until LS3/LS4
– These cables would have to be installed in addition to existing cables (minimizing the work required during LS2)
– Commitment from service/equipment groups required on short/mid-term:
* Review the situation close to BA2 and evaluate if this could be done (resource-wise) during LS2
* if not, agree on mitigation measures (similar to above) to be put in place in order to ensure operation until LS3
- on mid/long-term:
continue the review and improve of the chemical/mechanical test strategy on old (and new) cables
EATM 15. August 2017
EDMS n.c.