5. Take off manhole and handhole plates as soon as possible after
steam is out of boiler, that boiler may cool inside sufficiently for
examination; also _keep all doors shut_ about boilers and settings,
_except the furnace and ash-pit doors_. Keep _dampers_ open in _pipes_
and _chimneys_.
6. Have all ashes removed from under boilers, and fire surfaces of
shell and heads swept clean.
7. Have spare packing ready for use on manhole and handhole plates, if
the old packing is made useless in taking off or is burned. The boiler
attendant is to take off and replace these plates.
8. Keep all windows and doors to boiler room open, after fires are
hauled, so that boilers and settings may cool as quickly as possible.
9. Particular attention is called to Rule 5, respecting doors—which
should be open and which closed—also arrangement of damper. The
importance of cooling the inside of the boiler by removal of manhole
and handhole plates at the same time the outside is cooling, is in
equalizing the process of contraction.