Footnotes:

FOOTNOTES AND TERMS USED IN TABLE 151.05

Group D required as indicated in Subpart 111.60, Subchapter

Terms and symbols:

Segregation-Tank

Line 1-Segregation of cargo from surrounding waters:

1=Skin of vessel (single skin) only required. Cargo tank wall can be vessel's hull.

11 Double skin required. Cargo tank wall cannot be vessel's
hull.

Line 2-Segregation of cargo space from machinery spaces and
other spaces which have or could have a source of ignition:
i=Single bulkhead only required. Tank wall can be sole
separating medium.

Subpart 151.10-Barge Hull
Construction Requirements

§ 151.10-1 Barge hull classifications.

(a) Each barge constructed or con-
verted in conformance with this subpart
shall be assigned a hull type number.

(1) Effective dates for certain require-
ments:

(i) Barges constructed or converted between July 1, 1964, and June 1, 1970, in accordance with the construction requirements of § 32.63 of this chapter and § 98.03 of this chapter are considered to comply with the basic provisions of this subpart and shall retain the hull type classification for the service for which they were originally approved. Changes in product endorsement shall not be considered a change in service, except when a change to a product of higher specific gravity necessitates a reevaluation of the

i=Double bulkhead required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid (if compatible with cargo) is satisfactory.

Specific numbers in this column are changes from the general provisions.

intact and damage stability requirements of §§ 151.10-5 and 151.10-10.

(b) For this purpose the barge hull
types shall be defined as follows:

(1) Type I barge hull. Barge hulls
classed as Type I are those designed to
carry products which require the maxi-
mum preventive measures to preclude
the uncontrolled release of the cargo.
These barges are required to meet stand-
ards of intact stability, § 151.10-5; a
modified two-compartment standard of
stability,
subdivision and damage

§ 151.10-10; and hull structural require-
ments, including an assumed grounding
condition.

(2) Type I-S (special) barge hulls.
Type I-S (special) barge hulls are those
constructed or converted for the carriage
of chlorine in bulk prior to July 1, 1964,
and modified to higher stability stand-

ards prior to July 1, 1968, but not meet-
ing the requirements for full Type I
classification.

(3) Type II barge hull. Barge hulls
classed as Type II are those designed to
carry products which require significant
preventive measures to preclude the un-
controlled release of the cargo. These
barges are required to meet standards of
intact stability, § 151.10-5; a modified
one-compartment standard of subdivi-
sion and damage stability, § 151.10-10;
and hull structural requirements includ-
ing an assumed grounding condition.

(4) Type III barge hull. Barge hulls
classed as Type III are those designed to
carry products of sufficient hazard to
require a moderate degree of control.
These barges are required to meet stand-
ards of intact stability, § 151.10-5; and
hull structural requirements.