[Code of Federal Regulations]
[Title 46, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR62.25-30]

[Page 303]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 62_VITAL SYSTEM AUTOMATION--Table of Contents
 
   Subpart 62.25_General Requirements for All Automated Vital Systems
 
Sec. 62.25-30  Environmental design standards.

    (a) All automation must be suitable for the marine environment and 
must be designed and constructed to operate indefinitely under the 
following conditions:
    (1) Ship motion and vibration described in section 41.37 of the 
American Bureau of Shipping's ``Rules for Building and Classing Steel 
Vessels.''

    Note: Inclination requirements for fire and flooding safety systems 
are described in Sec. 112.05-5(c) of this chapter.

    (2) Ambient air temperatures described in section 41.29.1 and 
41.29.2 of the American Bureau of Shipping's ``Rules for Building and 
Classing Steel Vessels.''
    (3) Electrical voltage and frequency tolerances described in section 
41.29.3 of the American Bureau of Shipping's ``Rules for Building and 
Classing Steel Vessels.''
    (4) Relative humidity of 0 to 95% at 45 [deg]C.
    (5) Hydraulic and pneumatic pressure variations described in section 
41.39.3e of the American Bureau of Shipping's ``Rules for Building and 
Classing Steel Vessels.''

    Note: Considerations should include normal dynamic conditions that 
might exceed these values, such as switching, valve closure, power 
supply transfer, starting, and shutdown.

    (b) Low voltage electronics must be designed with due consideration 
for static discharge, electromagnetic interference, voltage transients, 
fungal growth, and contact corrosion.