ASTM F1271-90(2006)
(Specification)Standard Specification for Spill Valves for Use in Marine Tank Liquid Overpressure Protections Applications
Standard Specification for Spill Valves for Use in Marine Tank Liquid Overpressure Protections Applications
ABSTRACT
This specification provides the minimum requirements for design, construction, performance, and testing of devices to prevent marine tank liquid overpressurization (hereafter called spill valves). Materials of construction shall be suitable for the service intended and resistant to the attack by the liquid carried in the tank being protected. Corrosion test, hydrostatic test, performance test, freeze test, vapor tightness test, seaworthiness test, and production test shall be performed to conform with the specified requirements.
SCOPE
1.1 This specification provides the minimum requirements for design, construction, performance, and testing of devices to prevent marine tank liquid overpressurization (hereafter called spill valves).
1.2 The spill valves provided in accordance with this specification will satisfy Regulation 1I-2/59.1.6 of the 1981 and 1983 Amendments to the International Convention for the Safety of Life at Sea, 1974 (SOLAS), which states: "Provision shall be made to guard against liquid rising in the venting system to a height which would exceed the design head of the cargo tank. This shall be accomplished by high level alarms or overflow control systems or other equivalent means, together with gaging devices and cargo tank filling procedures."
1.3 The spill valves are not intended for the venting of vapors or the relief of vapor overpressurization or underpressurization of marine tanks.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 The following precautionary caveat pertains only to the test methods portion, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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An American National Standard
Designation: F1271 – 90 (Reapproved 2006)
Standard Specification for
Spill Valves for Use in Marine Tank Liquid Overpressure
Protections Applications
This standard is issued under the fixed designation F1271; 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.
1. Scope 2.2 ANSI Standards:
B2.1 Pipe Threads
1.1 This specification provides the minimum requirements
B16.1 Cast Iron Pipe Flanges and Flanged Fittings
fordesign,construction,performance,andtestingofdevicesto
B16.3 Malleable Iron Threaded Fittings
prevent marine tank liquid overpressurization (hereafter called
B16.4 Cast Iron Threaded Fittings
spill valves).
B16.5 Steel Pipe Flanges and Flanged Fittings
1.2 The spill valves provided in accordance with this
B 16.11 Forged Steel Fittings, Socket-Welding and
specification will satisfy Regulation 1I-2/59.1.6 of the 1981
Threaded
and 1983Amendments to the International Convention for the
B16.15 Cast Bronze Threaded Fittings
Safety of Life at Sea, 1974 (SOLAS), which states: “Provision
B16.24 Bronze Pipe Flanges and Flanged Fittings
shall be made to guard against liquid rising in the venting
B31.1 Power Piping
system to a height which would exceed the design head of the
2.3 Other Documents:
cargo tank.This shall be accomplished by high level alarms or
ASME Boiler and Pressure Vessel Code, Section VIII,
overflow control systems or other equivalent means, together
Division 1, Pressure Vessels; Section IX, Welding and
with gaging devices and cargo tank filling procedures.’’
Brazing Qualifications
1.3 The spill valves are not intended for the venting of
Safety for Life at Sea Convention, Regulation II-2/
vapors or the relief of vapor overpressurization or underpres-
59.1.6, Amendments 1981 and 1983
surization of marine tanks.
46 CFR 153 Ships Carrying Bulk Liquid, Liquified Gas, or
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
Compressed Gas Hazardous Materials
as the standard. The values given in parentheses are for
information only.
3. Terminology
1.5 The following precautionary caveat pertains only to the
3.1 Definition:
test methods portion, Section 8, of this specification: This
3.1.1 spill valve—an independent device that automatically
standarddoesnotpurporttoaddressallofthesafetyconcerns,
prevents liquid overpressurization of a tank by relieving liquid
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
at a predetermined pressure set higher than the pressure
of this standard to establish appropriate safety and health
reached in the tank when the tank vapor relieving device
practices and determine the applicability of regulatory limita-
operates at its maximum design venting rate (based on a
tions prior to use.
volumetric vapor volume 1.25 times the maximum design
2. Referenced Documents loading rate).
2.1 ASTM Standards:
4. Ordering Information
B117 Practice for Operating Salt Spray (Fog) Apparatus
4.1 Orders for spill valves in accordance with this specifi-
F722 Specification for Welded Joints for Shipboard Piping
cation shall include the following information, as applicable:
Systems
4.1.1 Nominal pipe size and end connections,
4.1.2 Product(s) in tank being protected by the spill valve,
4.1.3 Inspection and tests other than specified by this
This specification is under the jurisdiction ofASTM Committee F25 on Ships
specification,
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved Feb. 1, 2006. Published February 2006. Originally
approved in 1989. Last previous edition approved in 2001 as F1271–90 (2001). Available from American National Standards Institute, 25 W. 43rd St., 4th
DOI: 10.1520/F1271-90R06. Floor, New York, NY 10036.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Society of Mechanical Engineers (ASME), ASME
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM International Headquarters, Three Park Ave., New York, NY 10016-5990.
Standards volume information, refer to the standard’s Document Summary page on Available from Superintendent of Documents, U.S. Government Printing
the ASTM website. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F1271 – 90 (2006)
4.1.4 Required relieving pressure at maximum tank loading Specification F722. Welders and weld procedures shall be
flow rate, qualified in accordance with Section IX of the ASME Code.
4.1.5 Set (opening) pressure,
6.6 The spill valve shall be fully operable at static inclina-
4.1.6 Maximum tank design loading flow rate,
tions up to 2 ⁄2 ° unless otherwise specified by the ordering
4.1.7 Inlet pressure drop resulting from the maximum tank
information in Section 4.
design loading flow rate,
6.7 Spillvalvesshallallowforefficientdrainageofmoisture
4.1.8 Back pressure of the spill valve discharge lines result-
without impairing their proper operation.
ing from maximum tank design loading flow rate,
6.7.1 Where the design does not permit complete drainage
4.1.9 Purchaser’s inspection requirements (see 9.1),
of condensate through its connection to the tank, the housing
4.1.10 Installation inclinations in excess of 2 ⁄2 ° (see 6.6),
shall be fitted with a plugged drain opening on the side of the
4.1.11 Purchaser’s specifications for preventing the valve
atmospheric outlet of not less than nominal pipe size ⁄2 in. (12
from leaking due to cargo sloshing, and
mm).
4.1.12 Additional requirements or testing as contracted by
6.8 Housing, elements, and seal gasket materials shall be
the manufacturer and the purchaser.
capable of withstanding the highest pressure and temperature
to which the spill valve may be exposed under normal
5. Materials
conditions.
5.1 Materialsofconstructionshallbesuitablefortheservice
6.9 Spill valves shall be vapor tight at pressures below the
intended and resistant to the attack by the liquid carried in the
rated liquid relieving pressure.
tank being protected (see 4.1.2). TableI of 46 CFR 153
specifies materials that may not be used in components that 6.10 Fastenings essential to the operation of the spill valve
contact liquid or vapor of each hazardous liquid cargo. shall be protected against loosening.
5.2 Housings of spill valves, and all other parts or bolting,
6.11 Spill valves shall be designed and constructed to
or both, used for pressure retention, shall be constructed of
minimize the effect of fouling under normal conditions.
materialshavingasolidusmeltingpointofgreaterthan1700°F
6.12 The spill valve shall not be provided with a means of
(927°C)andbelistedinANSIB31.1orSectionVIII,Division
positive closure. In installations where cargo sloshing is
1 of the ASME Boiler and Pressure Vessel Code, except as
expected, the spill valve installation must be designed to
noted in 5.5.
precludeprematureopeningofthevalveduetocargosloshing.
5.3 Corrosion-resistant materials shall be used for the fol-
Also, the installation shall be designed so that it complies with
lowing:
applicable loadline and subdivision requirements.
5.3.1 Housings, disks, spindles, and seats of valves.
6.13 Spill valves shall be capable of operating in freezing
5.3.2 Springs that actuate disks of valves. Springs plated
conditions.
with corrosion-resistant material are not acceptable.
6.14 Each of the free areas through the valve seat and
5.4 Nonmetallic materials shall not be permitted except for
through the valve discharge at maximum lift shall not be less
gaskets, seals, bushings in way of moving parts, and valve
than the cross-sectional area of the valve inlet connection.
diaphragms.
6.15 Means shall be provided to check that any valve opens
5.5 Boltingmaterialsshallbeatleastequaltothoselistedin
freely and does not remain lodged in the open position.
Table1ofANSIB16.5.Bolts,screws,andfastenersincontact
6.16 Valve Disks:
with interior liquid shall be compatible with the liquid (see
4.1.2).
6.16.1 Valve disks shall be guided by a ribbed cage or other
suitable means to prevent binding and ensure proper seating.
6. Other Requirements
Wherevalvestemsareguidedbybushingssuitablydesignedto
6.1 Pressure-retaining housings shall be designed to with-
prevent binding and to ensure proper seating, the valves need
2 2
standahydrostaticpressureofatleast125lb/in. (8.78kg/cm )
not be fitted with ribbed cages.
without rupturing or showing permanent distortion.
6.16.2 Valve disks shall close tight against the valve seat by
6.2 Housing shall have suitable pipe connections for the
metal to metal contact; however, resilient seating seals may be
removal, maintenance, and testing of the spill valve.
provided if the design is such that the disk closes tight against
6.2.1 Threaded or flanged pipe end connections shall com-
the seat in case the seals are destroyed or in case they carry
ply with the applicable B16ANSI standards listed in 2.2 or as
away.
agreed upon by the manufacturer and the purchaser (see
6.16.3 Valve disks m
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