Chamber Min. Manning
3- Chamber Sup, Outside Tender, Inside Tender
Chamber Optimum Manning
4- Chamber Sup, Driver, Logs, Inside Tender
Min O2 % in Chamber, Max O2 % in Chamber
19-25% O2
Max CO2 in Chamber
1.5 SEV
Under 85*F - max tolerance / can use TT
unlimited / All TT’s
85-94*F - max tolerance / can use TT
6 hours / TT5, 6, 6A, 1A, & 9
95-104*F - max tolerance / can use TT
2 hours / TT5 & 9
> 104*F - max tolerance / can use TT
Intolerable / no TT’s
When doing TT__, TT__, or TT__, a double lock is mandatory
TT4, 7 or 8