In May 2000, whilst operating submerged deep in the Mediterranean off the southern coast of Sicily, the Royal Navy nuclear powered submarine HMS Tireless developed a serious fault in the primary circuit of her nuclear reactor, she surfaced, shut down her nuclear propulsion system and made way under emergency diesel power to Gibraltar for investigation and repairs.

L&A were appointed by the Government of Gibraltar to advise on the necessity of Tireless remaining in the Port and on the risk and safety aspects of the repairs.  The work involved negotiating with the Ministry of Defence,  meetings with the Royal Navy's nuclear regulator, agreeing to staged work to hold points and, prior to reactor restart, attending and approving the cold hydro test of the reactor primary circuit.

Client:  Government of Gibraltar      

Duration:  12 Months