[Code of Federal Regulations]

[Title 49, Volume 4]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR230.39]



[Page 427]

 

                        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.