ASTM F1138-98(2003)

Standard Specification for Spray Shields for Mechanical Joints

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-2003
• 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 - Standard Specification for Spray Shields for Mechanical Joints
• Effective Date: 01-Dec-2003
• Replaced By: ASTM F1138-98(2007) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation: F 1138 – 98 (Reapproved 2003)
Standard Specification for
Spray Shields for Mechanical Joints
This standard is issued under the fixed designation F 1138; 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 (e) 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 D1388 Test Method for Stiffness of Fabrics
D1424 Test Method for Tearing Strength of Fabrics by
1.1 This specification describes the manufacturing require-
Falling-Pendulum Type (Elmendorf) Apparatus
mentsforsprayshieldstockandthefabricationandinstallation
D1682 Test Methods for Breaking Load and Elongation of
requirements for spray shields made from that stock.
Textile Fabrics
1.1.1 Sections2-14addressthemanufacturingrequirements
D1777 Method for Measuring Thickness of Textile Mate-
for the spray shield stock.AnnexA1 addresses the fabrication
rials
and installation requirements for the spray shields.
D3389 Test Method for Coated Fabrics Abrasion Resis-
1.1.2 Fig.1showsthetypicalconstructionofasprayshield.
tance (Rotary Platform, Double-Head Abrader)
Figs. 2-6 show methods of installation of a spray shield on
D3776 Test Methods for Mass Per Unit Area (Weight) of
various mechanical joints.
Fabric
1.2 The shields are intended for use around mechanical
D3786 Test Method for Hydraulic Bursting Strength of
joints (flanged, bolted unions, and so forth) in liquid piping
Knitted Goods and Nonwoven Fabrics: Diaphragm Burst-
systemstopreventtheimpingementofflammableliquidonhot
ing Strength Tester Method
surfaces or fluids onto electrical switchboards and components
D3951 Practice for Commercial Packaging
resulting from a leak in the mechanical joint.
F501 Test Method for Aerospace Materials Response to
1.3 The values stated in inch-pound units are to be regarded
Flame, With Vertical Test Specimen (For Aerospace Ve-
as the standard. The values given in parentheses are for
hicles Standard Conditions)
information only.
2.2 AmericanAssociationofTextileChemistsandColorists
2. Referenced Documents Standards:
AATCC-22 Water Repellency, Spray Test
2.1 ASTM Standards:
AATCC-35 Water Resistance, Rain Test
A176 Specification for Stainless and Heat-Resisting Chro-
AATCC-127 Water Resistance, Hydrostatic Pressure Test
mium Steel Plate, Sheet, and Strip
2.3 Military Standards:
A276 Specification for Stainless Steel Bars and Shapes
MIL-C-20079 Cloth,Glass,Tape,TextileGlassandThread,
A580 Specification for Stainless Steel Wire
Glass
B134 Specification for Brass Wire
MIL-C-20696 Cloth, Coated, Nylon Waterproof
B164 Specification for Nickel-CopperAlloy Rod, Bar, and
2.4 Federal Standard:
Wire
WW-C-440 Clamps, Hose (Low Pressure)
B 166 Specification for Nickel-Chromium-Iron Alloys
(UNS N06600, N06601, and N06690) and Nickel–Chro-
3. Ordering Information
mium–Cobalt–Molybdenum Alloy (UNS N06617) Rod,
3.1 ASTM designation and year of issue,
Bar, and Wire
3.2 Length and width required (see 7.1), and
3.3 Type of stainless steel (see 4.1).
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.
Current edition approved Dec. 1, 2003. Published January 2004. Originally Withdrawn.
approved in 1988. Last previous edition approved in 1998 as F1138–98. Available from American Association of Textile Chemists and Colorists
For referenced ASTM standards, visit the ASTM website, www.astm.org, or (AATCC), One Davis Dr., P.O. Box 12215, Research Triangle Park, NC 27709-
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 2215.
Available from Superintendent of Documents, U.S. Government Printing
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1138 – 98 (2003)
FIG. 1 Spray Shield Construction (Typical)
FIG. 3 Spray Shield for Pump Inlet Head
FIG. 2 Installation of Butterfly Valve Shield
5. Physical and Mechanical Properties
5.1 The physical and mechanical properties for the alumi-
3.4 Type of lacing hardware required (see 4.1.1).
nizedglasscloth,thread,andprotectiveouterjacketshallbeas
4. Materials and Manufacture
specified in Table 1 and Table 2.
4.1 Lacing hooks, lacing rings, and lacing washers (see Fig.
6. Requirements
7) shall be constructed of stainless steel in accordance with
Specifications A176, A276, or A580. 6.1 If lacing hooks or rings are of the type that fasten by
4.1.1 Lacing rings may be used instead of lacing hooks
stitching, the hooks or rings shall be attached to the backup
where practicable or preferable (see 3.3). washers using a wire stitch machine and wire (Pieces 5 or 8 in
4.1.2 Lacing washers for fastening hooks or rings shall be
Table 1).
two-hole washers. 6.2 Lacing anchor/self-locking washer-type systems shall
4.2 Stitch wire (Piece 5 in Table 1) shall be constructed of
not be used on spray shields.
stainless steel in accordance with Specification A580.
7. Dimensions and Permissible Variations
4.3 The aluminized glass cloth, thread, and the protective
outer jacket shall be constructed of material as specified in 7.1 Thematerialforshieldsshallbestandardizedasgivenin
Table 1 and Table 2. Table 3 tolerances to be + ⁄4 in. (6 mm) and −0 in. for width.
F 1138 – 98 (2003)
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
dissatisfaction with the results of the test, the producer or
supplier may make claim for a rehearing.
13. Product Marking
FIG. 4 Spray Shield for Simplex Strainer
13.1 Indelible stamp denoting the width of the shield shall
be placed at 24-in. (610-mm) intervals on the visible foil side
8. Workmanship, Finish, andAppearance
of the shield so that it will be visible when the shield is rolled
8.1 The seam on both sides of the spray shield shall be
and packaged.
intact.
8.1.1 On drawstring-type shields, there shall be ample
14. Packaging and Package Marking
overlap in the seam to allow wire to be run through the entire
14.1 The packaging, packing, and marking of containers
length of the shield.
shall be in accordance with Practice D3951, with the excep-
8.2 There shall be no tears in the uncovered aluminum
tions noted in 14.1.1 and 14.1.2.
portion of the
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