[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: 49CFR230.39]

[Page 330]
 
                        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. 230.39  Broken staybolts.

    (a) Maximum allowable number of broken staybolts. No boiler shall be 
allowed to remain in service with two broken staybolts located within 24 
inches of each other, as measured inside the firebox or combustion 
chamber on a straight line. No boiler shall be allowed to remain in 
service with more than 4 broken staybolts inside the entire firebox and 
combustion chamber, combined.
    (b) Staybolt replacement. Broken staybolts must be replaced during 
the 31 service day inspection, if detected at that time. Broken 
staybolts detected in between 31 service day inspections must be 
replaced no later than 30 calendar days from the time of detection. When 
staybolts 8 inches or less in length are replaced, they shall be 
replaced with bolts that have telltale holes \3/16\ inch to \7/32\ inch 
in diameter and at least 1\1/4\ inches deep at each end, or that have 
telltale holes \3/16\ inch to \7/32\ inch in diameter their entire 
length. At the time of replacement of broken staybolts, adjacent 
staybolts shall be inspected.
    (c) Assessment of broken staybolts. Telltale holes leaking, plugged, 
or missing shall be counted as broken staybolts.
    (d) Prohibited methods of closing telltale holes. Welding, forging, 
or riveting broken staybolt ends is prohibited as a method of closing 
telltale holes.