[Code of Federal Regulations]
[Title 49, Volume 3]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR193.2615]

[Page 137]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                       TRANSPORTATION (CONTINUED)
 
PART 193_LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS--
Table of Contents
 
                          Subpart G_Maintenance
 
Sec. 193.2615  Isolating and purging.

    (a) Before personnel begin maintenance activities on components 
handling flammable fluids which are isolated for maintenance, the 
component must be purged in accordance with a procedure which meets the 
requirements of AGA ``Purging Principles and Practices,'' unless the 
maintenance procedures under Sec. 193.2605 provide that the activity 
can be safely performed without purging.
    (b) If the component or maintenance activity provides an ignition 
source, a technique in addition to isolation valves (such as removing 
spool pieces or valves and blank flanging the piping, or double block 
and bleed valving) must be used to ensure that the work area is free of 
flammable fluids.