Is a heat shield mandatory on a vertical exhaust stack?
Section § 393.83: Exhaust systems.
Guidance Q&A
Question 1: Is a heat shield mandatory on a vertical exhaust stack?
Guidance: No. However, § 393.83 requires the placement of the exhaust system in such a manner as to prevent the burning, charring, or damaging of the electrical wiring, the fuel supply, or any combustible part of the CMV.
Regulatory Topic:
Heat shield on vertical exhaust stack?
Effective Date: Sunday, May 4, 1997
Issued Date: Friday, April 4, 1997