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ASTM F986-86(2008)

(Specification)

Standard Specification for Suction Strainer Boxes

Standard Specification for Suction Strainer Boxes

ABSTRACT
This specification covers the design and material requirements as well as the construction strainer boxes used in ships' bilges and other tank locations requiring trash protection for suction pipes and pumps. Materials covered by this specification are Types 1 and 2 strainer boxes, which shall be manufactured free of defects, burrs, and sharp edges, and with dimensions conforming to the requirements specified. The strainer boxes shall be hot galvanized after fabrication.
SCOPE
1.1 This specification covers the design, materials, and construction of strainer boxes for use in ships' bilges and other such tank locations that require trash protection for suction pipes and pumps.  
1.2 This specification covers pipe sizes from NPS 1½ through NPS 16 (see Note 1).
Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this specification for such traditional terms as “nominal diameter,” “size,” and “nominal size.”  
1.3 The values stated in inch-pound units are to be regarded as the standard.

General Information

Status
Historical
Publication Date
31-Oct-2008
ICS
47.020.30 - Piping systems
Technical Committee
F25 - Ships and Marine Technology
Drafting Committee
F25.11 - Machinery and Piping Systems
Current Stage
Ref Project

Relations

Replaces
ASTM F986-86(2004) - Standard Specification for Suction Strainer Boxes
Effective Date
01-Nov-2008
Replaced By
ASTM F986-86(2014) - Standard Specification for Suction Strainer Boxes
Effective Date
01-Aug-2014

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ASTM F986-86(2008) - Standard Specification for Suction Strainer BoxesASTM F986-86(2008) - Standard Specification for Suction Strainer Boxes
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ASTM F986-86(2008) - Standard Specification for Suction Strainer Boxes
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:F986 −86(Reapproved 2008) An American National Standard
Standard Specification for
1
Suction Strainer Boxes
ThisstandardisissuedunderthefixeddesignationF986;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Ordering Information
1.1 This specification covers the design, materials, and 4.1 Ordering information required is as follows.
constructionofstrainerboxesforuseinships’bilgesandother
4.1.1 ASTM specification and year of issue.
such tank locations that require trash protection for suction
4.1.2 Type.
pipes and pumps.
4.1.3 Size (suction pipe NPS).
1.2 This specification covers pipe sizes from NPS 1½
4.1.4 Dimensions G and H (Type 2 only).
through NPS 16 (see Note 1).
4.1.5 Number of each type and size.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
5. Materials and Manufacture
beensubstitutedinthisspecificationforsuchtraditionaltermsas“nominal
diameter,” “size,” and “nominal size.”
5.1 For information on materials, see Table 1.
1.3 The values stated in inch-pound units are to be regarded
5.2 Welding shall be in accordance with AWS D1.3.
as the standard.
3
5.3 Perforated sheet metal shall have ⁄8-in. diameter holes
2. Referenced Documents
on staggered ½-in. centers, 51% open area.
2
2.1 ASTM Standards:
A36/A36MSpecification for Carbon Structural Steel 6. Dimensions and Tolerances
A123/A123MSpecification for Zinc (Hot-Dip Galvanized)
1
6.1 Tolerance—6 ⁄16 in.
Coatings on Iron and Steel Products
6.2 Strainer Box Dimensions:
F593 Specification for Stainless Steel Bolts, Hex Cap
6.2.1 Type 1—See Table 2.
Screws, and Studs
F594Specification for Stainless Steel Nuts 6.2.2 Type 2—See Table 3.
F708Practice for Design and Installation of Rigid Pipe
Hangers 7. Workmanship, Finish, and Appearance
3
2.2 American Welding Society Standard:
7.1 Strainer boxes shall be hot galvanized in accordance
AWS D1.3Structural Welding Code—Sheet Steel
with Specification A123/A123M after fabrication. The galva-
nizing shall be a minimum of 2 mils thick.
3. Classification
7.2 Strainer boxes shall be free of defects, burrs, and sharp
3.1 This specification covers two types of strainer boxes.
edges.
3.1.1 Type 1—Strainer boxes with pipe clamp centered on
the top of the strainer box (see Fig. 1).
8. Installation
3.1.2 Type 2—Strainer boxes with the pipe clamp off center
in the top of the strainer box (see Fig. 2).
8.1 Strainerboxesarenormallyinstalledonsuctionpipesin
ballast and bilge spaces.
1
This specification is under the jurisdiction ofASTM Committee F25 on Ships
8.2 Minimum suction pipe or tank bottom clearances are
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
indicated in Column “F” in Table 2 and Table 3. Dimension
Machinery and Piping Systems.
callout is based on ½ × the tailpipe nominal pipe size.
Current edition approved Nov. 1, 2008. Published December 2008. Originally
approvedin1986.Lastpreviouseditionapprovedin2004asF986-86(2004).DOI:
8.3 Tank structure and sloping bottom structure may ob-
10.1520/F0986-86R08.
2
scure the above clearance down to the limit of the resulting
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
periphery clear area, being 1.5 × the inside diameter of the
Standards volume information, refer to the standard’s Document Summary page on
tailpipe.Structureoutsidethelimitof½thepipeNPSneednot
the ASTM website.
3
be considered as obstructing flow.
Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
Miami, FL 33126, http://www.aws.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F986−86 (2008)
NOTE 1—Tab location to suit perforated holes.
FIG. 1Type 1—Elevation Strainer Box
2

---------------------- Page: 2 ----------------------
F986−86 (2008)
FIG. 2 Type 2—Elevation Rectangular Strainer
TABLE 1 Parts List
Item Number Description
3
1 Side—Sheet metal, 11 gage, perforated ⁄8-in.
diameter holes staggered on ½-in. centers, carbon
steel, Specification A36/A36M.
3
2 Top—Sheet metal, 11 gage, perforated ⁄8-in. diam-
eter holes staggered on ½-in. centers, carbon steel,
Specification A36/A36M.
3 Tab—Flatbar, ¼ in. thick by 1 in. wide by 2 in. long,
carbon steel, Specification A36/A36M or ABS
Grade A.
1
4 Screw—Tapping, plain hexagon washer head ⁄4
3
nominal size by ⁄4 in. long, Type 316 stainless
steel, Specification F593.
5 Clamp—Split cap, Practice F708 Fig. 1a, without
standoff.
6 Bolt—Hexagon head, stainless steel, Type 316
Specificatio
...

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