[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: 49CFR193.2619]

[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. 193.2619  Control systems.

    (a) Each control system must be properly adjusted to operate within 
design limits.
    (b) If a control system is out of service for 30 days or more, it 
must be inspected and tested for operational capability before returning 
it to service.
    (c) Control systems in service, but not normally in operation, such 
as relief valves and automatic shutdown devices, and control systems for 
internal shutoff valves for bottom penetration tanks must be inspected 
and tested once each calender year, not exceeding 15 months, with the 
following exceptions:
    (1) Control systems used seasonally, such as for liquefaction or 
vaporization, must be inspected and tested before use each season.
    (2) Control systems that are intended for fire protection must be 
inspected and tested at regular intervals not to exceed 6 months.
    (d) Control systems that are normally in operation, such as required 
by a base load system, must be inspected and tested once each calendar 
year but with intervals not exceeding 15 months.
    (e) Relief valves must be inspected and tested for verification of 
the valve seat lifting pressure and reseating.

[Amdt. 193-2, 45 FR 70407, Oct. 23, 1980, as amended by Amdt. 193-17, 65 
FR 10960, Mar. 1, 2000]