[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR230.61]

[Page 333-334]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 230--STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS--Table of Contents
 
                  Subpart B--Boilers and Appurtenances
 
Sec. 230.61  Arch tubes, water bar tubes, circulators and thermic siphons.

    (a) Frequency of cleaning. Each time the boiler is washed, arch 
tubes and water bar tubes shall thoroughly be cleaned mechanically, 
washed, and inspected. Circulators and thermic siphons shall thoroughly 
be cleaned, washed and inspected.
    (b) Defects. Arch tubes and water bar tubes found blistered, bulged, 
or otherwise defective shall be renewed. Circulators and thermic siphons 
found blistered, bulged or otherwise defective shall be either repaired 
or renewed.
    (c) Method of examination. Arch tubes, water bar tubes and 
circulators shall be examined using an appropriate NDE method that 
accurately measures wall thickness at each annual inspection. All arch 
brick shall be removed for this inspection. If any are found with wall 
thickness reduced below that required to render them safe and suitable 
for the service intended at the MAWP specified on the boiler 
specification FRA Form No. 4, they must be replaced

[[Page 334]]

or repaired. (See appendix B of this part.)

                               Steam Pipes