[Code of Federal Regulations] [Title 9, Volume 1] [Revised as of January 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 9CFR91.22] [Page 361] TITLE 9--ANIMALS AND ANIMAL PRODUCTS CHAPTER I--ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE PART 91_INSPECTION AND HANDLING OF LIVESTOCK FOR EXPORTATION--Table of Contents Subpart D_Inspection of Vessels and Accommodations Sec. 91.22 Protection from heat of boilers and engines. No animals shall be stowed along the alleyways leading to the engine or boiler rooms unless the sides of said engine or boiler rooms are covered by a tongue and groove tight sheathing producing a 3-inch-wide air space except that on ships powered with internal combustion engines this sheathing may not be required at the discretion of the inspector. [42 FR 28990, June 7, 1977. Redesignated at 45 FR 86413, Dec. 31, 1980]