A bottom blow-off pipe when exposed to direct furnace heat shall be protected by fire-brick or other heat resisting material so arranged that the pipe may be inspected.
229 Neb. Admin. Code, ch. 21, § 034
A bottom blow-off pipe when exposed to direct furnace heat shall be protected by fire-brick or other heat resisting material so arranged that the pipe may be inspected.
229 Neb. Admin. Code, ch. 21, § 034