ASTM F1271-90(2001)
(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
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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 1271 – 90 (Reapproved 2001)
Standard Specification for
Spill Valves for Use in Marine Tank Liquid Overpressure
Protections Applications
This standard is issued under the fixed designation F 1271; 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.
1. Scope B2.1 Pipe Threads
B16.1 Cast Iron Pipe Flanges and Flanged Fittings
1.1 This specification provides the minimum requirements
B16.3 Malleable Iron Threaded Fittings
fordesign,construction,performance,andtestingofdevicesto
B16.4 Cast Iron Threaded Fittings
prevent marine tank liquid overpressurization (hereafter called
B16.5 Steel Pipe Flanges and Flanged Fittings
spill valves).
B 16.11 Forged Steel Fittings, Socket-Welding and
1.2 The spill valves provided in accordance with this
Threaded
specification will satisfy Regulation 1I-2/59.1.6 of the 1981
B16.15 Cast Bronze Threaded Fittings
and 1983Amendments to the International Convention for the
B16.24 Bronze Pipe Flanges and Flanged Fittings
Safety of Life at Sea, 1974 (SOLAS), which states: “Provision
B31.1 Power Piping
shall be made to guard against liquid rising in the venting
2.3 Other Documents:
system to a height which would exceed the design head of the
ASME Boiler and Pressure Vessel Code, Section VIII,
cargo tank.This shall be accomplished by high level alarms or
Division 1, Pressure Vessels; Section IX, Welding and
overflow control systems or other equivalent means, together
Brazing Qualifications
with gaging devices and cargo tank filling procedures.’’
Safety for Life at Sea Convention, Regulation II-2/
1.3 The spill valves are not intended for the venting of
59.1.6, Amendments 1981 and 1983
vapors or the relief of vapor overpressurization or underpres-
46 CFR 153 Ships Carrying Bulk Liquid, Liquified Gas, or
surization of marine tanks.
Compressed Gas Hazardous Materials
1.4 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
3. Terminology
information only.
3.1 Definition:
1.5 The following precautionary caveat pertains only to the
3.1.1 spill valve—an independent device that automatically
test methods portion, Section 8, of this specification: This
prevents liquid overpressurization of a tank by relieving liquid
standarddoesnotpurporttoaddressallofthesafetyconcerns,
at a predetermined pressure set higher than the pressure
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
reached in the tank when the tank vapor relieving device
of this standard to establish appropriate safety and health
operates at its maximum design venting rate (based on a
practices and determine the applicability of regulatory limita-
volumetric vapor volume 1.25 times the maximum design
tions prior to use.
loading rate).
2. Referenced Documents
4. Ordering Information
2.1 ASTM Standards:
2 4.1 Orders for spill valves in accordance with this specifi-
B117 Practice for Operating Salt Spray (Fog) Apparatus
cation shall include the following information, as applicable:
F722 Specification for Welded Joints for Shipboard Piping
3 4.1.1 Nominal pipe size and end connections,
Systems
4.1.2 Product(s) in tank being protected by the spill valve,
2.2 ANSI Standards:
4.1.3 Inspection and tests other than specified by this
specification,
4.1.4 Required relieving pressure at maximum tank loading
This specification is under the jurisdiction ofASTM Committee F25 on Ships
flow rate,
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved Nov. 30, 1990. Published August 1991. Originally
published as F1271–89. Last previous edition F1271–89.
2 5
Annual Book of ASTM Standards, Vol 03.02. Available from American Society of Mechanical Engineers (ASME), ASME
Annual Book of ASTM Standards, Vol 01.07. International Headquarters, Three Park Ave., New York, NY 10016-5990.
4 6
Available from American National Standards Institute, 25 W. 43rd St., 4th Available from Superintendent of Documents, U.S. Government Printing
Floor, New York, NY 10036. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1271 – 90 (2001)
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 1
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). Table I of 46 CFR 153
6.10 Fastenings essential to the operation of the spill valve
specifies materials that may not be used in components that
shall be protected against loosening.
contact liquid or vapor of each hazardous liquid cargo.
6.11 Spill valves shall be designed and constructed to
5.2 Housings of spill valves, and all other parts or bolting,
minimize the effect of fouling under normal conditions.
or both, used for pressure retention, shall be constructed of
6.12 The spill valve shall not be provided with a means of
materialshavingasolidusmeltingpointofgreaterthan1700°F
positive closure. In installations where cargo sloshing is
(927°C)andbelistedinANSIB31.1orSectionVIII,Division
expected, the spill valve installation must be designed to
1 of the ASME Boiler and Pressure Vessel Code, except as
precludeprematureopeningofthevalveduetocargosloshing.
noted in 5.5.
Also, the installation shall be designed so that it complies with
5.3 Corrosion-resistant materials shall be used for the fol-
applicable loadline and subdivision requirements.
lowing:
6.13 Spill valves shall be capable of operating in freezing
5.3.1 Housings, disks, spindles, and seats of valves.
conditions.
5.3.2 Springs that actuate disks of valves. Springs plated
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
6.16.1 Valve disks shall be guided by a ribbed cage or other
4.1.2).
suitable means to prevent binding and ensure proper seating.
Wherevalvestemsareguidedbybushingssuitablydesignedto
6. Other Requirements
prevent binding and to ensure proper seating, the valves need
6.1 Pressure-retaining housings shall be designed to with-
not be fitted with ribbed cages.
2 2
standahydrostaticpressureofatleast125lb/in. (8.78kg/cm )
6.16.2 Valve disks shall close tight against the valve seat by
without rupturing or showing permanent distortion.
metal to metal contact; however, resilient seating seals may be
6.2 Housing shall have suitable pipe connections for the
provided if the design is such that the disk closes tight against
removal, maintenance, and testing of the spill valve.
the seat in case the seals are destroyed or in case they carry
6.2.1 Threaded or flanged pipe end connections shall com-
away.
ply with the applicable B16ANSI standards listed in 2.2 or as
6.16.3 Valve disks may be solid or hollow. The pressure at
agreed upon by the manufacturer and the purchaser (see
which the valve disks open fully at maximum flow rating shall
4.1.12). Welded joints shall comply with Specification F722.
not exceed 120% of the set (opening) pressure.
6.3
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.