[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: 49CFR232.107]

[Page 437-438]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 232--BRAKE SYSTEM SAFETY STANDARDS for FREIGHT and OTHER NON-PASSENGER TRAINS and EQUIPMENT; END-of-TRAIN DEVICES--Table of Contents
 
                     Subpart B--General Requirements
 
Sec. 232.107  Air source requirements and cold weather operations.

    (a) Monitoring plans for yard air sources. (1)A railroad shall adopt 
and comply with a written plan to monitor all yard air sources, other 
than locomotives, to determine that they operate as intended and do not 
introduce contaminants into the brake system of freight equipment.
    (2) This plan shall require the railroad to:
    (i) Inspect each yard air source at least two times per calendar 
year, no less than five months apart, to determine it operates as 
intended and does not introduce contaminants into the brake system of 
the equipment it services.
    (ii) Identify yard air sources found not to be operating as intended 
or found introducing contaminants into the brake system of the equipment 
it services.
    (iii) Repair or take other remedial action regarding any yard air 
source identified under paragraph (a)(2)(ii) of this section.
    (3) A railroad shall maintain records of the information and actions 
required by paragraph (a)(2). These records shall be maintained for a 
period of at least one year from the date of creation and may be 
maintained either electronically or in writing.
    (b) Condensation and other contaminants shall be blown from the pipe 
or hose from which compressed air is taken prior to connecting the yard 
air line or motive power to the train.
    (c) No chemicals which are known to degrade or harm brake system 
components shall be placed in the train air brake system.
    (d) Yard air reservoirs shall either be equipped with an operable 
automatic drain system or be manually drained at

[[Page 438]]

least once each day that the devices are used or more often if moisture 
is detected in the system.
    (e) A railroad shall adopt and comply with detailed written 
operating procedures tailored to the equipment and territory of that 
railroad to cover safe train operations during cold weather. For 
purposes of this provision, ``cold weather'' means when the ambient 
temperature drops below 10 degrees Fahrenheit (F) (minus 12.2 degrees 
Celsius).