Last night steam generator 1B suffered a tube rupture.  The generator has been isolated and a tube bundle replacement is underway.    We anticipate 2 – 3 days to have the generator bundle replaced.  While isolating the generator we discovered a leaking packing gland on one of the steam isolation valves.  It is likely we will be able to repack the valve, however if we are unable to this may delay returning the system to operation.  

Fortunately this was a small leak and the HTHW was properly cooled and drained though the quenching system. With no external damage in the mechanical room.    

Currently the steam system is generating about 20 psi of steam.  This will not be enough to operate your autoclaves and will result in low humidity in the vivarium.  

We do have the stand alone autoclave on the third floor right hand side available for such emergencies. With this being the only autoclave in the building over the next few days, I'm requesting that everyone be prompt and attentive while using this autoclave as we have 17 research groups in the building most using an autoclave. I would also request that if you are autoclaving biohazardous waste, that you bring the autoclaved bags back to your research labs home floor for evening disposal.