ASTM F1348/F1348M-91(2002)
(Specification)Standard Specification for Pneumatic Rotary Descaling Machines
Standard Specification for Pneumatic Rotary Descaling Machines
SCOPE
1.1 This specification covers requirements for pneumatic rotary descaling machines for removal of paint, rust, scale, nonskid deck covering, and other coatings from steel and aluminum structures. These portable machines are intended for use in a marine environment, subject to salt air and spray during use and high humidity during storage.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.3 The following precautionary statement pertains to the test method portion only, Section 12, 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. Specific precautionary statements are given in 17.2.1.
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An American National Standard
Designation: F 1348/F 1348M – 91 (Reapproved 2002)
Standard Specification for
Pneumatic Rotary Descaling Machines
This standard is issued under the fixed designation F 1348/F 1348M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope PPP-B-601 Boxes, Wood, Cleated-Plywood
PPP-B-621 Boxes, Wood, Nailed and Lock-Corner
1.1 This specification covers requirements for pneumatic
PPP-B-636 Boxes, Shipping, Fiberboard
rotary descaling machines for removal of paint, rust, scale,
PPP-B-640 Boxes, Fiberboard, Corrugated, Triple Wall
nonskid deck covering, and other coatings from steel and
PPP-B-676 Boxes, Setup
aluminum structures.These portable machines are intended for
2.4 Military Standards:
use in a marine environment, subject to salt air and spray
MIL-STD-129 Marking for Shipment and Storage
during use and high humidity during storage.
MIL-STD-147 Palletized Unit Loads
1.2 The values stated in either inch-pound units or SI units
2.5 Military Specifications:
are to be regarded separately as standard. The values stated in
MIL-B-117 Bags, Sleeves and Tubing
each system are not exact equivalents; therefore, each system
MIL-H-775 Hose, HoseAssemblies; Rubber, Plastic, Fabric
shall be used independently of the other. Combining values
or Metal (Including Tubing); and Associated Hardware:
from the two systems may result in nonconformance with the
Packaging of
specification.
MIL-L-17331 Lubricating Oil, Steam Turbine, Noncorro-
1.3 The following precautionary statement pertains to the
sive
test method portion only, Section 12, of this specification: This
DOD-G-24508 Grease, High Performance, Ball Roller
standard does not purport to address all of the safety concerns,
Bearing, Continuous Run to 300°F
if any, associated with its use. It is the responsibility of the user
2.6 ABS Publication:
of this standard to establish appropriate safety and health
ABS Rules for Building and Classing Steel Vessels
practices and determine the applicability of regulatory limita-
tions prior to use. Specific precautionary statements are given
3. Classification
in 17.2.1.
3.1 Descaling machines are available in two types and two
2. Referenced Documents classes, as follows:
3.1.1 Type 1, Hand-Held:
2.1 ASTM Standards:
3.1.1.1 Class A—Inch-pound design, and
B 209 Specification for Aluminum and Aluminum-Alloy
2 3.1.1.2 Class B—SI metric design.
Sheet and Plate
3.1.2 Type 2, Deck-Supported:
D 4417 Test Methods for Field Measurement of Surface
3 3.1.2.1 Class A—Inch-pound design, and
Profile of Blast Cleaned Steel
3.1.2.2 Class B—SI metric design.
F 1166 Practice for Human Engineering Design for Marine
4 3.2 Hubs for use with descaling machines are available in
Systems, Equipment, and Facilities
four classes, as follows:
2.2 Federal Standard:
5 3.2.1 Class A—Nonmetallic, nonwoven, noncontaminating,
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3.2.2 Class B—Peening hub for aluminum surfaces,
2.3 Federal Specifications:
5 3.2.3 Class C—Metallichammertypeforsteelsurfaces,and
PPP-B-566 Boxes, Folding, Paperboard
3.2.4 Class D—Metallic cutter type for steel surfaces.
4. Ordering Information
This specification is under the jurisdiction of ASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.07 on
4.1 Orders for material under this specification shall include
General Requirements.
the following:
Current edition approved July 15, 1991. Published September 1991. Originally
approved in 1991. Last previous edition approved in 1991 as F 1348/F 1348M – 91
(1997).
Annual Book of ASTM Standards, Vol 02.02.
3 6
Annual Book of ASTM Standards, Vol 06.02. Available from American Bureau of Shipping, ABS Plaza, 16855 Northchase
Annual Book of ASTM Standards, Vol 01.07. Dr., Houston, TX 77060.
5 7
Available from Standardization Documents Order Desk, Bldg 4 Section D, 700 Available from Uniform Classification Committee Agent, Tariff Publication
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. Officer, Room 1106, 222 S. Riverside Plaza, Chicago, IL 60606.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1348/F 1348M – 91 (2002)
4.1.1 Title, number, and date of this specification, except where such requirements conflict with the requirements
4.1.2 Quantity, of this specification. The machines shall incorporate the
4.1.3 Type and class required (see Section 3), maintainability requirements of Practice F 1166 and shall
4.1.4 Test and inspection certification requirements, if ap- permit safe and efficient performance of operation and main-
plicable (see Section 15), tenance by the fifth percentile female to the ninety-fifth
4.1.5 Test report requirements (see Section 15), percentile male, as defined in Practice F 1166. Clearance shall
4.1.6 Technical manual requirements (see Section 16), be provided around each component, part or control so that an
4.1.7 Special marking required (see 18.3), individual with aforementioned percentile body dimensions
4.1.8 Level of preservation, packaging, packing, and mark- and physical capabilities can safely operate, maintain, remove,
ing required (see Section 17 and Supplementary Require- or replace any item using normally available tools and test
ments), and equipment. The controls required for operation and mainte-
4.1.9 Lubrication requirements of Supplementary Require- nance shall be in accordance with Practice F 1166 and shall not
ments, if applicable (see Section S3). require operator forces to exceed the strength limitations listed
therein.
5. Materials and Manufacture
6.3 Interchangeability—Component parts and assemblies
5.1 Asbestos and Cadmium: peculiar to each type and class of machine from any one
5.1.1 Material used in the machines, or in any components,
manufacturer shall be fully interchangeable. Such interchange-
accessories, repair parts, tools, and packing and packaging ability shall not require any alterations or modifications.
shall be free of asbestos and cadmium.
6.4 Dimensions and Weight—The machines, fully as-
5.2 Metal Parts—Metal parts shall be corrosion resistant or sembled with guards; debris collector attachment (less hoses
treated to resist corrosion.
and collection container); and with operating handles (Type 2)
lockedinitsoperatingposition;fullylubricatedandreadyinall
6. Mechanical Properties
aspects for operation (less air hose and filter, evaporator and
6.1 The machines shall be powered by an air motor and
lubricator attachments) shall not exceed the maximum dimen-
shall accept each of the rotary hubs (see 6.9).
sions and weight shown in Table 1.
6.1.1 Type 1—TheType 1 machine shall be a hand-held unit
6.5 Air Motor—The machines shall be driven by air motors
having a minimum of two handles, one of which shall house
that operate on the minimum air supplies as shown in Table 2.
the trigger mechanism. The trigger mechanism shall be of the
6.6 Guards—Machines of both Type 1 and Type 2 shall be
spring-loaded “dead man” type and shall immediately shut off
provided with guards that protect the operator from inadvertent
air flow to the motor when released. The arrangement of the
contact with moving parts and prevent uncontrolled scattering
handles and trigger mechanism shall permit right- or left-
of chips or scale removed by the machine. These guards shall
handed operation with equal ease. The direction of rotation of
not interfere with the performance of the machine throughout
the hubs shall tend to propel the machine in the forward
the machine’s useful life, unduly decrease any of the hub’s
direction, away from the operator. The Type 1 machine shall
physical dimensions or wear, or interfere with changing of the
remove coatings to within ⁄4 in. [6 mm] of bulkheads,
hubs. The guards/rotary hub containment shall be constructed
coamings, decks, and other immovable objects.
to accommodate a debris collection system.
6.1.2 Type 2—The Type 2 machine shall be a deck sup-
6.7 Air Connections—Air connections for both Type 1 and
ported unit with a T-shaped operating handle. The operating
Type 2 machines shall be of the quick disconnect type. The
handle shall be adjustable for height, rigid and strong enough
locations of the air connection shall be such that the hose does
to operate the machine without bending, and long enough to
not interfere with operation of the machine or the operator.The
allow any operator with the percentile body dimensions speci-
inside diameter of the connections shall be in accordance with
fied herein (see 6.2) to operate the machine while walking
Table 3.
behind it in a natural walking position.The air hose connection
6.8 Lubrication—Lubrication fittings shall be installed so
and trigger mechanism shall be located on the T-handle. The
that lubrication can be accomplished without disassembly of
trigger mechanism shall be of the spring-loaded “dead man”
the machine (see 6.2). Lubrication materials shall be high-
type and shall immediately shut off air flow to the motor when
temperature lubricating oil or high-performance grease.
released. The handle shall detach or be adjustable to and
6.9 Hubs:
lockable in the vertical position for storage. The machine shall
6.9.1 Hubs for each type and class of machine shall clean a
be provided with at least two wheels used to move the
pathofwidthnotlessthanthatshowninTable4.Hubsforeach
machine. With the handle, air hose and each of the abrasive
type, class, and manufacture of machine shall be interchange-
hubs attached, the machine shall sit level on the deck with the
able with hubs of any other machine of the same type, class,
abrasive hubs in contact with the deck and not interfere with
deck coating removal process. The machine shall easily propel TABLE 1 Maximum Dimensions and Weights
itself or be propelled by the operator across the deck without
Type 1 Type 1 Type 2 Type 2
Class A Class B Class A Class B
overstressing the operator (see 6.2). The Type 2 machine shall
remove deck coating to within 1 ⁄2 in. [40 mm] of the Length 16 in. 410 mm 36 in. 915 mm
Width 6 in. 155 mm 16 in. 410 mm
bulkheads, coamings, and other immovable objects.
Height 12 in. 306 mm 48 in. 1220 mm
6.2 Human Engineering—The machines shall be in accor-
Weight 5lb 2.3kg 110lb 50kg
dance with the human engineering criteria of Practice F 1166
F 1348/F 1348M – 91 (2002)
TABLE 2 Air Supplies
and Table 6.
Type 1 Type 1 Type 2 Type 2 7.1.1 Type 1 Machine—See Table 5.
Class A Class B Class A Class B
7.1.2 Type 2 Machine—See Table 6.
2 2
Air pressure 80 lb/in. 550 kPa 80 lb/in. 550 kPa
7.2 Stability:
3 3 3 3
Air volume 18 ft /min 0.51 m /min 125 ft /min 3.54 m /min
7.2.1 Type 1 Machine—The assembled Type 1 machine
shall operate at nay angle from the horizontal to vertical
(including the overhead) without loss of power or descaling
TABLE 3 Air Connections
efficiency.
Type 1 Type 1 Type 2 Type 2
7.2.2 Type 2 Machine—The assembled Type 2 machine
Class A Class B Class A Class B
shall operate without loss of power and descaling efficiency
1 1
⁄4 in. 6.3 mm ⁄2 in. 12.7 mm
and without tipping when inclined at an angle of 15° from the
horizontal in any direction.
TABLE 4 Minimum Path Width
8. Attachments
Hub for: Minimum Path Width
8.1 Themachineshallbefurnishedinkitform,witheachkit
Type 1 Class A machine 2 in.
containing the following items besides the basic machine:
Type 1 Class B machine 50 mm
Type 2 Class A machine 5 in.
8.1.1 One Class A hub,
Type 2 Class B machine 125 mm
8.1.2 One Class B hub,
8.1.3 One Class C hub,
8.1.4 One Class D hub,
and manufacture, using only the normally available tools (see
8.1.5 One air hose with fittings,
8.1.2) for the interchange.
8.1.6 One hub-changing tool (or tool set),
6.9.2 Hubs shall be of the following classes, classified by
8.1.7 One debris collector,
intended composition, function, and service life, as follows:
8.1.8 One carrying case, and
6.9.2.1 ClassAHub—TheClassAhubshallbenonmetallic,
8.1.9 One in-line filter/evaporator/lubricator.
nonwoven, noncontaminating, and shall remove paint, rust, or
8.1.10 Air Hose—Airhosesshallbe ⁄8in.[10mm]forType
scale. The Class A hub shall feather the edge of a painted
1 machine and ⁄4 in. [19 mm] for Type 2 machine with
surfaceinasmoothtaperfromthepaintedaluminumsurfaceto
quick-disconnectconnectionsandanairshutoffvalvethatshall
bare metal, and shall not remove, erode, or groove metal
immediatelyshutofftheairwhenthehoseisdisconnected.The
surfaces.The ClassAhub shall have a minimum service life of
hose for the Type 1 machine shall be 50 ft [15 m] long and the
8h.
hose for the Type 2 machine shall be 100 ft [30 m] long.
6.9.2.2 Class B Hub—The Class B hub shall remove paint,
8.1.11 Hub Changing Tool—A standard commercially
rust, or scale and shall peen the aluminum surface to a profile
available tool for changing hubs shall be provided. The tools
of1.0to3.0mils[0.0025to0.0076mm].TheClassBhubshall
shall not be unique to a specific supplier.
have a minimum service life of 50 h.
8.1.12 Carrying Case—The carrying cases for Type 1 and
6.9.2.3 Class C Hub—The Class C hub shall be a metallic
Type 2 machines shall be corrosion-resistant, fire-resistant,
hammer type assembly and shall remove paint and nonskid
high-impact material, strong and rigid enough to transport the
covering on steel surfaces. The Class C hub shall operate over
machine and its accessories. The carrying case shall rigidly
protrusionsorobstructionsonthedecksurface,suchasboltsor
hold all accessories with the exception of hoses, without
padeyes,uptoaheightof1in.[25mm],withoutdamagetothe
deformation or breakage, and shall be less than 24 in. [610
hubormachine.TheClassChubshallhaveaminimumservice
mm] wide. The carrying case shall also hold the machine’s
life of 100 h.
handle when the handle is disconnected.
6.9.2.4 Class D Hub—The Class D hub shall be a metallic
8.1.13 Debris Collector—BothType 1 andType 2 machines
type cutter assembly that removes paint, rust, scale, and
shallbecapableofattachingadebriscollectingdevicethatwill
nonskid deck coverings on steel surfaces. The Class D hub
collect a minimum of 95 % of the debris created.
shall have a minimum service life of 30 h.
8.1.14 In-Line Filter/Evaporator/Lubricator—Afilter to re-
move air system debris, an evaporator to remove moisture, and
7. Performance Requirements
a lubricator to continually lubricate the machine or a combi-
7.1 Removal Rate—The minimum removal rate when tested
nation unit shall be installed to ensur
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