[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR182.510]

[Page 282-283]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 182_MACHINERY INSTALLATION--Table of Contents
 
                   Subpart E_Bilge and Ballast Systems
 
Sec. 182.510  Bilge piping system.

    (a) A vessel of at least 7.9 meters (26 feet) in length must be 
provided with individual bilge lines and bilge suctions for each 
watertight compartment, except that the space forward of the collision 
bulkhead need not be fitted with a bilge suction line when the 
arrangement of the vessel is such that ordinary leakage may be removed 
from this compartment by the use of a hand portable bilge pump or other

[[Page 283]]

equipment, and such equipment is provided.
    (b) A bilge pipe in a vessel of not more than 19.8 meters (65 feet) 
in length must be not less than 25 millimeters (1 inch) nominal pipe 
size. A bilge pipe in a vessel of more than 19.8 meters (65 feet) in 
length must be not less than 40 millimeters (1.5 inches) nominal pipe 
size. A bilge suction must be fitted with a suitable strainer having an 
open area not less than three times the area of the bilge pipe.
    (c) Except when individual pumps are provided for separate spaces, 
individual bilge suction lines must be led to a central control point or 
manifold and provided with a stop valve at the control point or manifold 
and a check valve at some accessible point in the bilge line. A stop-
check valve located at a control point or manifold will meet the 
requirements for both a stop valve and a check valve.
    (d) A bilge pipe piercing the collision bulkhead must be fitted with 
a screw-down valve located on the forward side of the collision bulkhead 
and operable from the weather deck, or, if it is readily accessible 
under service conditions, a screw-down valve without a reach rod may be 
fitted to the bilge line on the after side of the collision bulkhead.