egress spacing

huangyhg

egress spacing
i am trying to determine the required maximum spacing for egress points for a utility tunnel.  the tunnel is used for steam, condensate, and some electrical at a u.s. university.  anybody know where a requirement exists?
internationl building code 2000 has the following guidance for what seems to be your application:
section 306: factory industrial group f-1
from table 1004.2.4: exit access travel distance
without sprinklers - 200 feet (i.e. 400 feet between exits in tunnel)
with sprinklers - 250 feet (i.e. 500 feet between exits)
addtionally section 405.8 (exits) requires a minimum of two exits for underground "buildings".
although these requirements are usually intended for human occupancy structures - the requirements sound reasonable considering risk of injury/accident from both elecrical or steam/hot water sources.