At moment the SilverKris Lounge is not yet open, other arrangements have been made for passengers travelling on SQ317/SQ305 they are able to use the Plaza Premium and for passengers travelling on SQ319/SQ321 are able to use either the AC or UA lounge.
Passengers travelling in Suites/First Class are able to use the United Global First Lounge for all flights. The UA Global First lounge closes at 1800.
If you have any other questions, I will try and answer.