[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR230.38]

[Page 476]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 230_STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS--Table of 
 
                   Subpart B_Boilers and Appurtenances
 
Sec.  230.38  Telltale holes.

    (a) Staybolts less than 8 inches long. All staybolts shorter than 8 
inches, except flexible bolts, shall have telltale holes 3/16 inch to 7/
32 inch diameter and at least 1\1/4\ inches deep in the outer end.
    (b) Reduced body staybolts. On reduced body staybolts, the telltale 
hole shall extend beyond the fillet and into the reduced section of the 
staybolt. Staybolts may have through telltale holes.
    (c) Telltale holes kept open. All telltale holes, except as provided 
for in Sec.  230.41, must be kept open at all times.