ASTM F991M-95
(Specification)Standard Specification for Docking/Drain Plug and Boss Assemblies [Metric] (Withdrawn 2004)
Standard Specification for Docking/Drain Plug and Boss Assemblies [Metric] (Withdrawn 2004)
SCOPE
1.1 This specification provides design, construction, and purchasing criteria for docking/drain plug and boss assemblies.
1.2 Assemblies are intended for installation in shell, rudder, and tank bottom plate from 8 through 38 mm.
1.3 Assemblies shall be installed at the lowest point of a tank or rudder for draining during dry docking.
1.4 The values stated in SI units are to be regarded as the standard.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation: F 991M – 95
METRIC
Standard Specification for
1
Docking/Drain Plug and Boss Assemblies [Metric]
This standard is issued under the fixed designation F 991M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (ε) indicates an editorial change since the last revision or reapproval.
1. Scope 4.1.3 Optional nonstandard materials.
1.1 This specification provides design, construction, and
5. Materials and Manufacture
purchasing criteria for docking/drain plug and boss assemblies.
5.1 Materials:
1.2 Assemblies are intended for installation in shell, rudder,
5.1.1 Boss—ABS Grade A or B, plate or bar.
and tank bottom plate from 8 through 38 mm.
5.1.2 Plug—Specification B 164 rod or bar.
1.3 Assemblies shall be installed at the lowest point of a
5.1.3 Other materials may be substituted to suit hull con-
tank or rudder for draining during dry docking.
struction as approved by regulatory bodies.
1.4 The values stated in SI units are to be regarded as the
5.2 Manufacture:
standard.
5.2.1 Plugs and bosses shall be machined.
2. Referenced Documents 5.2.2 Threads shall be in accordance with ANSI B2.1.
2.1 ASTM Standards:
6. Dimensions and Tolerances
B 164 Specification for Nickel-CopperAlloy Rod, Bar, and
6.1 Dimensions shall be as indicated in Fig. 1 and Fig. 2.
2
Wire
6.2 Tolerance shall be61.5 mm.
2.2 Other Documents:
6.3 Mass shall be as follows:
3
ABS Rules for Building and Classing Steel Vessels
4
ANSI B2.1 Standard Pipe Threads Except Dryseal Type I Type II
3. Classification
Boss 1.6 kg 5.7 kg
Plug .6 kg 1.0 kg
3.1 Docking plugs and bosses shall be classified as follows:
Total 2.2 kg 6.7 kg
3.1.1 TypeI—Docking plug and bosses for plating from 8 to
7. Installation
15 mm (see Fig. 1).
3.1.2 Type II—Docking plug and bosses for plating greater
7.1 All welding shall be to the standards of the Rules for
than 15 to 38 mm (see Fig. 2).
Building and Classing of Steel Vessels (ABS).
7.2 Threads shall be adequately protected during installa-
4. Ordering Information
tion.
4.1 Orders for material under this specification shall include
7.3 Fill plug face with portland cement or other suitable
the following:
compound and finish flush with face of boss.
4.1.1 ASTM designation and year o
...
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