ASTM F994-86(2006)

Standard Specification for Design and Installation of Overboard Discharge Hull Penetration Connections

ABSTRACT
This specification covers carbon steel overboard discharge hull penetrations for system piping. Penetrations shall be classified as follows: Type I; Type II (Class 1 and Class 2); Type III (Class 1 and Class 2); and Type IV (Classes 1, 2, and 3). Doubler and insert plates shall be of material with physical properties equal to or better than the reinforced shell plate. Overboard discharges shall be combined to the maximum extent practicable to minimize the number of shell penetrations. Overboard discharges shall be located to minimize recirculation into suction seachests. Shell penetrations shall be located outside of cathodic protection areas. Penetration pipe extension past the shell plate shall be equal to the pipe wall thickness.
SCOPE
1.1 This specification covers carbon steel overboard discharge hull penetrations for system piping of NPS 1 through NPS 24 (see Note 1).
Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such TRADITIONAL terms as nominal diameter, size, and nominal size.  
1.2 The minimum pipe schedule and reinforcement dimensions presented in Tables 1-6 are based on specifications in 46 CFR, 56.50-95 and Navy Design Data Sheet 100-1.  
1.3 This specification does not include sea chest penetrations.  
1.4 This specification does not include penetrations in protective plating.

General Information

• Status: Historical
• Publication Date: 31-Jan-2006
• ICS: 47.020.30 - Piping systems
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.11 - Machinery and Piping Systems

Relations

• Replaces: ASTM F994-86(2001) - Standard Specification for Design and Installation of Overboard Discharge Hull Penetration Connections
• Effective Date: 01-Feb-2006
• Replaced By: ASTM F994-86(2011) - Standard Specification for Design and Installation of Overboard Discharge Hull Penetration Connections
• Effective Date: 01-Apr-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: F994 – 86 (Reapproved 2006)
Standard Specification for
Design and Installation of Overboard Discharge Hull
Penetration Connections
ThisstandardisissuedunderthefixeddesignationF994;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
TABLE 1 Pipe Schedule for Type 1 Penetrations, NPS 1 Through
1. Scope
A
NPS 24
1.1 This specification covers carbon steel overboard dis-
Pene-
charge hull penetrations for system piping of NPS 1 through
tration
Shell Plating Thickness (T), in.
NPS 24 (see Note 1).
Pipe Size,
NPS
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
5 3 7 1 3
¼–½ ⁄8 ⁄4 ⁄8 11 ⁄8 1¼ 1 ⁄8 1½
been substituted in this standard for such TRADITIONAL terms as
1 80 80 160 160 160 160 XXS XXS XXS
nominal diameter, size, and nominal size.
1¼ 80 160 160 160 XXS XXS XXS XXS XXS
1.2 The minimum pipe schedule and reinforcement dimen-
1½ 80 160 160 160 160 XXS XXS XXS XXS
2 80 160 160 160 160 160 160 XXS XXS
sions presented in Tables 1-6 are based on specifications in 46
2½ 80 80 160 160 160 160 160 XXS XXS
CFR, 56.50-95 and Navy Design Data Sheet 100-1.
3 80 80 160 160 160 160 160 160 XXS
1.3 This specification does not include sea chest penetra-
4 80 80 120 120 120 120 160 160 160
5 80 80 80 120 120 120 120 160 160
tions.
6 80 80 80 120 120 120 120 120 160
1.4 This specification does not include penetrations in
8 80 80 80 80 100 100 100 120 120
protective plating. 10 60 60 60 80 80 100 100 100 120
12 60 60 60 80 80 80 100 100 100
14 60 60 60 80 80 80 80 100 100
2. Referenced Documents
16 40 60 60 60 80 80 80 80 100
2.1 ASTM Standards: 18 40 40 60 60 60 80 80 80 80
20 40 40 60 60 60 60 80 80 80
A519 Specification for Seamless Carbon and Alloy Steel
22 40 40 60 60 60 60 80 80 80
Mechanical Tubing
24 40 40 60 60 60 60 60 60 80
2.2 ANSI Standard:
A
See Fig. 1.
B36.10 Welded and Seamless Wrought Steel Pipe
2.3 Military Document:
Department of the Navy, Bureau of Ship Design Data Sheet
MIL-STD-1689 Fabrication, Welding, and Inspection of
100-1
Ships Structure
ABS Rules for Building and Classing Steel Vessels
2.4 Other Documents:
Title 46 Code of Federal Regulations (CFR), Subchapter F,
3. Classification
Marine Engineering
3.1 Type I—Nonreinforced penetrations. Table 1 provides
minimum schedules for the penetration pipe. See Fig. 1 for
details of the penetration.
This specification is under the jurisdiction of ASTM Committee F25 on Ships
3.2 Type II—Doubler plate-reinforced penetrations. Table 2
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
provides minimum dimensions for doubler plates.
Machinery and Piping Systems.
Current edition approved Feb. 1, 2006. Published February 2006. Originally
3.2.1 Class 1—Inboard doubler plates. (Fig. 2)
approved in 1986. Last previous edition approved in 2001 as F994 – 86 (2001).
3.2.2 Class 2—Outboard doubler plates. (Fig. 3)
DOI: 10.1520/F0994-86R06.
3.3 Type III—Insert plate-reinforced penetrations. Table 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM provides minimum dimensions for insert plates.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 5
Available from American National Standards Institute, 25 W. 43rd St., 4th Available from Department of the Navy, Naval Sea Systems Command,
Floor, New York, NY 10036. Washington, DC 20362.
4 6
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Available from American Bureau of Shipping (ABS), ABS Plaza, 16855
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098. Northchase Dr., Houston, TX 77060.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F994 – 86 (2006)
A
TABLE 2 Doubler Plate Dimensions (T 3 D) Type II Penetration, NPS 1 Through NPS 24 (in. 3 in.)
D
Penetrating
Pipe Size, Shell Plating Thickness (T), in.
NPS, SCH
5 3 7 1 3
¼to½ ⁄8 ⁄4 ⁄8 11 ⁄8 1¼ 1 ⁄8 1½
3 5 3 3
1, 80 ¼ 3 5 ⁄8 35½ 3 5 ⁄8 3 5 ⁄4 3 5 ⁄4 351 351 351¼ 3 5
3 5 3 3
1¼, 80 ¼ 3 6 ⁄8 36½ 3 6 ⁄8 3 6 ⁄4 3 6 ⁄4 361 361 361¼ 3 6
3 5 3 3
1½, 80 ¼ 3 6 ⁄8 36½ 3 6 ⁄8 3 6 ⁄4 3 6 ⁄4 361 361 361¼ 3 6
3 5 3 3
2, 80 ¼ 3 7 ⁄8 37½ 3 7 ⁄8 3 7 ⁄4 3 7 ⁄4 371 371 371¼ 3 7
3 5 3 3
2½, 80 ¼ 3 7 ⁄8 37½ 3 7 ⁄8 3 7 ⁄4 3 7 ⁄4 371 371 371¼ 3 7
3 5 3 3
3, 80 ¼ 3 8 ⁄8 38½ 3 8 ⁄8 3 8 ⁄4 3 8 ⁄4 381 381 381¼ 3 8
3 5 3 3
4, 80 ¼ 3 9 ⁄8 39½ 3 9 ⁄8 3 9 ⁄4 3 9 ⁄4 391 391 391¼ 3 9
3 5 3 3
5, 80 ¼ 3 10 ⁄8 3 10 ½ 3 10 ⁄8 3 10 ⁄4 3 10 ⁄4 3 10 1 3 10 1 3 10 1¼ 3 10
3 5 3 3
6, 80 ¼ 3 12 ⁄8 3 12 ½ 3 12 ⁄8 3 12 ⁄4 3 12 ⁄4 3 12 1 3 12 1 3 12 1¼ 3 12
3 5 3 3
8, 80 ¼ 3 14 ⁄8 3 14 ½ 3 14 ⁄8 3 14 ⁄4 3 14 ⁄4 3 14 1 3 14 1 3 14 1¼ 3 14
3 5 3 3
10, 60 ¼ 3 16 ⁄8 3 16 ½ 3 16 ⁄8 3 16 ⁄4 3 16 ⁄4 3 16 1 3 16 1 3 16 1¼ 3 16
3 5 3 3
12, 60 ¼ 3 18 ⁄8 3 18 ½ 3 18 ⁄8 3 18 ⁄4 3 18 ⁄4 3 18 1 3 18 1 3 18 1¼ 3 18
3 5 3 3
14, 60 ¼ 3 20 ⁄8 3 20 ½ 3 20 ⁄8 3 20 ⁄4 3 20 ⁄4 3 20 1 3 20 1 3 20 1¼ 3 20
3 5 3 3
16, 40 ¼ 3 22 ⁄8 3 22 ½ 3 22 ⁄8 3 22 ⁄4 3 22 ⁄4 3 23 1 3 22 1 3 23 1¼ 3 24
3 5 3 3
18, 40 ¼ 3 24 ⁄8 3 24 ½ 3 24 ⁄8 3 24 ⁄4 3 24 ⁄4 3 25 1 3 24 1 3 25 1¼ 3 28
3 5 3 3
20, 40 ¼ 3 26 ⁄8 3 26 ½ 3 26 ⁄8 3 26 ⁄4 3 26 ⁄4 3 27 1 3 26 1 3 27 1¼ 3 30
3 5 3 3
22, 60 ¼ 3 28 ⁄8 3 28 ½ 3 28 ⁄8 3 28 ⁄4 3 28 ⁄4 3 29 1 3 28 1 3 29 1¼ 3 32
3 5 3 3
24, 40 ¼ 3 30 ⁄8 3 30 ½ 3 30 ⁄8 3 30 ⁄4 3 30 ⁄4 3 31 1 3 30 1 3 31 1¼ 3 33
A
See Fig. 2 and Fig. 3.
A
TABLE 3 Insert Plate Dimensions (T 3 D), NPS 1 Through NPS 24 (in. 3 in.)
I
Penetrating
Pipe Size, Shell Plating Thickness (T), in.
NPS, SCH
5 3 7 1 3
¼to½ ⁄8 ⁄4 ⁄8 11 ⁄8 1¼ 1 ⁄8 1½
1 3 3 5 3 7 3
1, 80 1 381 ⁄8 3 8¼ 1¼ 3 8½ 1 ⁄8 3 8 ⁄4 1½ 391 ⁄8 3 9¼ 1 ⁄4 3 9½ 1 ⁄8 3 9 ⁄4 2 3 10
1 3 3 5 3 7
1¼, 80 1 3 8¼ 1 ⁄8 3 8½ 1¼ 3 8 ⁄4 1 ⁄8 391½ 3 9¼ 1 ⁄8 3 9½ 1 ⁄4 3 10 1 ⁄8 3 10¼ 2 3 10½
3 1 3 3 5 3 7 3
1½, 80 1 3 8 ⁄4 1 ⁄8 3 8 ⁄4 1¼ 391 ⁄8 3 9¼ 1½ 3 9½ 1 ⁄8 3 10 1 ⁄4 3 10 1 ⁄8 3 10½ 2 3 10 ⁄4
1 3 3 5 3 7
2, 80 1 391 ⁄8 3 9¼ 1¼ 3 9½ 1 ⁄8 3 9 ⁄4 1½ 3 10 1 ⁄8 3 10¼ 1 ⁄4 3 10½ 1 ⁄8 3 11 2 3 11
1 3 5 3 3 7
2½, 80 1 3 10 1 ⁄8 3 10 1¼ 3 10 1 ⁄8 3 10¼ 1½ 3 10½ 1 ⁄8 3 10 ⁄4 1 ⁄4 3 11 1 ⁄8 3 11¼ 2 3 11½
1 3 3 3 5 3 3 7
3, 80 1 3 10½ 1 ⁄8 3 10 ⁄4 1¼ 3 10 ⁄4 1 ⁄8 3 11 1½ 3 11¼ 1 ⁄8 3 11½ 1 ⁄4 3 11 ⁄4 1 ⁄8 3 12 2 3 12¼
1 3 3 5 3 3 7
4, 80 1 3 11 1 ⁄8 3 11½ 1¼ 3 11 ⁄4 1 ⁄8 3 12 1½ 3 12¼ 1 ⁄8 3 12½ 1 ⁄4 3 12 ⁄4 1 ⁄8 3 13 2 3 13¼
1 3 5 3 3 7 1
5, 80 1 3 12 1 ⁄8 3 12½ 1¼ 3 13 1 ⁄8 3 13 1½ 3 13¼ 1 ⁄8 3 13½ 1 ⁄4 3 13 ⁄4 1 ⁄8 3 14 2 ⁄8 3 15
1 3 5 3 3 7 1
6, 80 1 3 13 1 ⁄8 3 13½ 1¼ 3 14 1 ⁄8 3 14 1½ 3 14¼ 1 ⁄8 3 14½ 1 ⁄4 3 14 ⁄4 1 ⁄8 3 15 2 ⁄8 3 16¼
1 3 5 3
8, 80 1 3 14 1 ⁄8 3 14½ 1¼ 3 15 1 ⁄8 3 16 1½ 3 16¼ 1 ⁄8 3 16½ 1 ⁄4 3 17 2 3 18 2½ 3 19¼
1 3 5 3 3 3 3
10, 60 1 3 16 1 ⁄8 3 17 1¼ 3 18 1 ⁄8 3 18¼ 1½ 3 18½ 1 ⁄8 3 18 ⁄4 2 3 20 ⁄4 2 ⁄8 3 22 ⁄4 2¼ 3 23
1 3 5 3 3 3 3
12, 60 1 3 18 1 ⁄8 3 18½ 1¼ 3 19 1 ⁄8 3 20 1½ 3 20½ 1 ⁄8 3 20 ⁄4 2 3 22 ⁄4 2 ⁄8 3 24 ⁄4 2½ 3 25
1 3 3 5 3 5 3
14, 60 1 3 21 1 ⁄8 3 21 1¼ 3 21 1 ⁄8 3 21½ 1½ 3 21 ⁄4 1 ⁄8 3 22 2 3 24 2 ⁄8 3 26 2 ⁄8 3 25 ⁄4
1 3 3 1 3 5 3 7
16, 40 1 3 23 1 ⁄8 3 23 1¼ 3 23¼ 1 ⁄8 3 24¼ 1 ⁄4 3 26½ 2 ⁄8 3 27½ 2 ⁄8 3 28½ 2 ⁄8 3 29 ⁄4 2 ⁄8 3 31
1 3 3 1 3 5 3 7
18, 40 1 3 25 1 ⁄8 3 25 1¼ 3 25¼ 1 ⁄8 3 25½ 1 ⁄4 3 27½ 2 ⁄8 3 29½ 2 ⁄8 3 30½ 2 ⁄8 3 31 ⁄4 2 ⁄8 3 33
1 3 7 1 3 5 3 7
20, 40 1 3 27 1 ⁄8 3 27¼ 1¼ 3 27¼ 1 ⁄8 3 28¼ 1 ⁄8 3 30½ 2 ⁄8 3 31½ 2 ⁄8 3 32½ 2 ⁄8 3 33 ⁄4 2 ⁄8 3 35
1 3 7 1 3 5 7
22, 60 1 3 29 1 ⁄8 3 29 1¼ 3 29 1 ⁄8 3 30 1 ⁄8 3 30 2 ⁄8 3 30 2 ⁄8 3 33½ 2 ⁄8 3 34½ 2 ⁄8 3 36
1 3 7 1 3 5 7
24, 40 1 3 31 1 ⁄8 3 31 1¼ 3 31¼ 1 ⁄8 3 31½ 1 ⁄8 3 34½ 2 ⁄8 3 35½ 2 ⁄8 3 36½ 2 ⁄8 3 38 2 ⁄8 3 39
A
See Fig. 4 and Fig. 5.
3.3.1 Class 1—Single-bevel insert plates. (Fig. 4) 4.2 Doubler and insert plates shall be of material with
3.3.2 Class 2—Double-bevel insert plates. (Fig. 5) physical properties equal to or better than the reinforced shell
3.4 Type IV—Sleeve-reinforced penetrations. Fig. 6 details
plate.
sleeve-reinforced penetrations.
4.3 Reinforcing sleeve material shall depend on the penetra-
3.4.1 Class 1—Sleeves of nonmachined steel tube. Table 4
tion pipe size:
provides minimum dimensions for nonmachined sleeves.
Penetration Pipe Size Sleeve Material
3.4.2 Class 2—Sleeves of machined steel tube or pipe.
NPS 1 through NPS 10 Seamless Steel Tubing, Specification
Table 5 provides minimum dimensions for machined sleeves.
A5
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