§648.51. Gear and crew restrictions.
50 C.F.R. § 648.51
(1) The cutting bar must be located in front of the depressor plate.
(2) The acute angle between the plane of the bale and the strut must be less than or equal to 45 degrees.
(3) All bale bars must be removed, except the outer bale (single or double) bars and the center support beam, leaving an otherwise unobstructed space between the cutting bar and forward bale wheels, if present. The center support beam must be less than 6 inches (15.24 cm) wide. For the purpose of flaring and safe handling of the dredge, a minor appendage not to exceed 12 inches (30.5 cm) in length may be attached to each of the outer bale bars. If the flaring bar is attached in a u-shape, none of the three sides of the flaring bar shall exceed 12 inches (30.5 cm) in length. The appendage shall at no point be closer than 12 inches (30.5 cm) to the cutting bar.
(4) Struts must be spaced 12 inches (30.5 cm) apart or less from each other, along the entire length of the frame.
(5) Unless exempted, as specified in paragraph (b)(5)(ii)(B) of this section, the TDD must include a straight extension (“bump out”) connecting the outer bale bars to the dredge frame. This “bump out” must exceed 12 inches (30.5 cm) in length, as measured along the inside of the bale bar from the front of the cutting bar to the first bend in the bale bar.
(2) The depressor plate, also known as the pressure plate, is the angled piece of steel welded along the length of the top of the dredge frame.
(3) The struts are the metal bars connecting the cutting bar and the depressor plate.
Notes, amendments, and revision history
Amendments
[69 FR 35215, June 23, 2004]
Source
Source: 69 FR 35215, June 23, 2004, unless otherwise noted.
Authority
Authority: 16 U.S.C. 1801 et seq.
Source
Source: 61 FR 34968, July 3, 1996, unless otherwise noted.
Amendments
[69 FR 35215, June 23, 2004]