ASTM F1138-98(2007)

Standard Specification for Spray Shields for Mechanical Joints

ABSTRACT
This specification describes the manufacturing requirements for spray shield stock and the fabrication and installation requirements for spray shields made from that stock. The physical and mechanical properties for the aluminized glass cloth, thread, and protective outer jacket shall be as specified. If lacing hooks or rings are of the type that fastens by stitching, the hooks or rings shall be attached to the backup washers using a wire stitch machine and wire. The methods for testing the aluminized glass cloth, thread, and protective outer jacket shall be as specified.
SCOPE
1.1 This specification describes the manufacturing requirements for spray shield stock and the fabrication and installation requirements for spray shields made from that stock.
1.1.1 Sections 2-14 address the manufacturing requirements for the spray shield stock. Annex A1 addresses the fabrication and installation requirements for the spray shields.  
1.1.2 Fig. 1 shows the typical construction of a spray shield. Figs. 2-6 show methods of installation of a spray shield on various mechanical joints.
1.2 The shields are intended for use around mechanical joints (flanged, bolted unions, and so forth) in liquid piping systems to prevent the impingement of flammable liquid on hot surfaces or fluids onto electrical switchboards and components resulting from a leak in the mechanical joint.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 30-Nov-2007
• ICS: 47.020.05 - Materials and components for shipbuilding
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.07 - General Requirements

Relations

• Replaces: ASTM F1138-98(2003) - Standard Specification for Spray Shields for Mechanical Joints
• Effective Date: 01-Dec-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F1138 −98(Reapproved 2007) An American National Standard
Standard Specification for
Spray Shields for Mechanical Joints
This standard is issued under the fixed designation F1138; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope Chromium-TungstenAlloy (UNS N06674) Rod, Bar, and
Wire
1.1 This specification describes the manufacturing require-
D1308Test Method for Effect of Household Chemicals on
mentsforsprayshieldstockandthefabricationandinstallation
Clear and Pigmented Organic Finishes
requirements for spray shields made from that stock.
D1424Test Method for Tearing Strength of Fabrics by
1.1.1 Sections2-14addressthemanufacturingrequirements
Falling-Pendulum (Elmendorf-Type) Apparatus
for the spray shield stock. AnnexA1 addresses the fabrication
D1682Test Method for Breaking Load and Elongation of
and installation requirements for the spray shields.
Textile Fabric (Withdrawn 1992)
1.1.2 Fig.1showsthetypicalconstructionofasprayshield.
D1777Test Method for Thickness of Textile Materials
Figs. 2-6 show methods of installation of a spray shield on
D3389Test Method for Coated FabricsAbrasion Resistance
various mechanical joints.
(Rotary Platform Abrader)
1.2 The shields are intended for use around mechanical
D3776Test Methods for Mass Per Unit Area (Weight) of
joints (flanged, bolted unions, and so forth) in liquid piping
Fabric
systemstopreventtheimpingementofflammableliquidonhot
D3786 Test Method for Bursting Strength of Textile
surfaces or fluids onto electrical switchboards and components
Fabrics—Diaphragm Bursting Strength Tester Method
resulting from a leak in the mechanical joint.
D3951Practice for Commercial Packaging
1.3 The values stated in inch-pound units are to be regarded F501Test Method for Aerospace Materials Response to
Flame, with Vertical Test Specimen (for Aerospace Ve-
as the standard. The values given in parentheses are for
information only. hicles Standard Conditions) (Withdrawn 1998)
2.2 American Association of Textile Chemists and Colorists
2. Referenced Documents
Standards:
AATCC-22Water Repellency, Spray Test
2.1 ASTM Standards:
AATCC-35Water Resistance, Rain Test
A176Specification for Stainless and Heat-Resisting Chro-
AATCC-127Water Resistance, Hydrostatic Pressure Test
mium Steel Plate, Sheet, and Strip
A276Specification for Stainless Steel Bars and Shapes 2.3 Military Standards:
A580/A580MSpecification for Stainless Steel Wire MIL-C-20079 Cloth,Glass,Tape,TextileGlassandThread,
B134/B134MSpecification for Brass Wire Glass
B164Specification for Nickel-Copper Alloy Rod, Bar, and MIL-C-20696Cloth, Coated, Nylon Waterproof
Wire
2.4 Federal Standard:
B166Specification for Nickel-Chromium-IronAlloys (UNS
WW-C-440 Clamps, Hose (Low Pressure)
N06600, N06601, N06603, N06690, N06693, N06025,
3. Ordering Information
N06045, and N06696), Nickel-Chromium-Cobalt-
Molybdenum Alloy (UNS N06617), and Nickel-Iron-
3.1 ASTM designation and year of issue,
3.2 Length and width required (see 7.1), and
This specification is under the jurisdiction ofASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.07 on
General Requirements. The last approved version of this historical standard is referenced on
Current edition approved Dec. 1, 2007. Published January 2008. Originally www.astm.org.
approved in 1988. Last previous edition approved in 2003 as F1138–98(2003). Available from American Association of Textile Chemists and Colorists
DOI: 10.1520/F1138-98R07. (AATCC), P.O. Box 12215, Research Triangle Park, NC 27709, http://
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.aatcc.org.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1138−98 (2007)
FIG. 1 Spray Shield Construction (Typical)
FIG. 3 Spray Shield for Pump Inlet Head
FIG. 2 Installation of Butterfly Valve Shield
4.3 The aluminized glass cloth, thread, and the protective
3.3 Type of stainless steel (see 4.1).
outer jacket shall be constructed of material as specified in
Table 1 and Table 2.
3.4 Type of lacing hardware required (see 4.1.1).
4. Materials and Manufacture 5. Physical and Mechanical Properties
4.1 Lacing hooks, lacing rings, and lacing washers (see Fig.
5.1 The physical and mechanical properties for the alumi-
7) shall be constructed of stainless steel in accordance with nizedglasscloth,thread,andprotectiveouterjacketshallbeas
Specifications A176, A276,or A580/A580M.
specified in Table 1 and Table 2.
4.1.1 Lacing rings may be used instead of lacing hooks
where practicable or preferable (see 3.3). 6. Requirements
4.1.2 Lacing washers for fastening hooks or rings shall be
6.1 If lacing hooks or rings are of the type that fasten by
two-hole washers.
stitching, the hooks or rings shall be attached to the backup
4.2 Stitch wire (Piece 5 in Table 1) shall be constructed of washers using a wire stitch machine and wire (Pieces 5 or 8 in
stainless steel in accordance with Specification A580/A580M. Table 1).
F1138−98 (2007)
9. Sampling, Selection, and Number of Specimens
9.1 Unless otherwise specified, the sampling of, selection
of, and number of specimens for the aluminized glass cloth,
thread, and protective outer jacket shall be as specified in the
applicable test methods listed in Table 1 and Table 2.
10. Test Methods
10.1 The methods for testing the aluminized glass cloth,
thread,andprotectiveouterjacketshallbeasspecifiedinTable
1 and Table 2.
11. Inspection
11.1 Unless otherwise specified in the contract or purchase
order, the contractor is responsible for performing inspections
to determine conformance to the requirements specified in
Section 8 of this specification.
12. Rejection and Rehearing
12.1 Material that fails to conform to the requirements of
thisspecificationmayberejected.Rejectionshouldbereported
to the producer or supplier promptly and in writing. In case of
FIG. 4 Spray Shield for Simplex Strainer
dissatisfaction with the results of the test, the producer or
supplier may make claim for a rehearing.
6.2 Lacing anchor/self-locking washer-type systems shall
13. Product Marking
not be used on spray shields.
13.1 Indelible stamp denoting the width of the shield shall
7. Dimensions and Permissible Variations
be placed at 24-in. (610-mm) intervals on the visible foil side
7.1 Thematerialforshieldsshallbestandardizedasgivenin
of the shield so that it will be visible when the shield is rolled
Table 3 tolerances to be + ⁄4 in. (6 mm) and −0 in. for width.
and packaged.
8. Workmanship, Finish, and Appearance
14. Packaging and Package Marking
8.1 The seam on both sides of the spray shield shall be
14.1 The packaging, packing, and marking of containers
intact.
shall be in accordance with Practice D3951, with the
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