ASTM F1309-98

Standard Practice for Installation Procedures for Fitting Chocks to Marine Machinery Foundations

SCOPE
1.1 This practice covers the acceptable methods of fitting chocks to marine machinery foundations.
1.2 The values stated in SI units shall be regarded as standard. The values in parentheses are for information only.
1.3 This standard does not purport to address the safety problems 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

• Status: Historical
• Publication Date: 31-Dec-1989
• ICS: 47.020.20 - Marine engines and propulsion systems
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.03 - Outfitting and Deck Machinery

Relations

• Replaced By: ASTM F1309-98(2003) - Standard Practice for Installation Procedures for Fitting Chocks to Marine Machinery Foundations
• Effective Date: 01-Dec-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: F 1309 – 98
Standard Practice for
Installation Procedures for Fitting Chocks to Marine
Machinery Foundations
This standard is issued under the fixed designation F 1309; 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 3.1.1.1 Type A—Epoxy-based resin, nonshrinking Chock-
fast Orange PR 610 TCF by Philadelphia Resin Corp., or equal,
1.1 This practice covers the acceptable methods of fitting
and
chocks to marine machinery foundations.
3.1.1.2 Type B—Two-piece wedge chocks.
1.2 The values stated in SI units shall be regarded as
3.1.1.3 Type C—Solid, one-piece fitted chocks.
standard. The values in parentheses are for information only.
1.3 This standard does not purport to address the safety
4. Procedure
concerns associated with its use. It is the responsibility of the
4.1 General Requirements for Types A, B, and C Chocking
user of this standard to establish appropriate safety and health
Systems:
practices and determine the applicability of regulatory limita-
4.1.1 Machining:
tions prior to use.
4.1.1.1 Type A chocks, machinery bedplates, foundation
2. Referenced Documents plates, and bolts do not require finish machining if the chocks
are not designed to be removed. Unless specified otherwise,
2.1 ASTM Standards:
Types B and C chock, bolts/studs, machinery bedplate, foun-
A 370 Test Methods and Definitions for Mechanical Testing
dation plates, and fitted holes need to be finished machined and
of Steel Products
fitted.
D 638 Test Method for Tensile Properties of Plastics
4.1.1.2 Surfaces in way of the chock areas on the machinery
D 648 Test Method for Deflection Temperature of Plastics
bedplate and the foundation plate may be machined before
Under Flexural Load in the Edge-Wise Position
installation or while the ship is not waterborne, or both.
D 695 Test Method for Compressive Properties of Rigid
4.1.1.3 Unless otherwise specified, all finished surfaces
Plastics
shall be finished to a maximum of 0.003–mm roughness height
2.2 Other Documents:
average (RHA).
American Bureau of Shipping Rules for Building and
4 4.1.1.4 Finished areas on the machinery bedplate and the
Classing Steel Vessels
foundation plate in way of the chocks shall be sufficiently
American Welding Society Publication, AWS
5 greater in size than the chock to prevent interference from the
D1.1 Structural Welding Code
unfinished area with the chock during installation.
3. Significance and Use 4.1.1.5 Spotface hole edge radius shall be such that there
will not be any interference between it and the bolt head-to-
3.1 This practice provides the three principal methods of
shank radius. The spotface area shall be sufficiently greater in
fitting chocks to marine machinery foundations to ensure that
area than that of the bolt head or nut so as not to cause any
the machinery is free of vibration and perfectly aligned after
interference when tightening or with the tooling used. The
installation.
spotface surfaces shall be perpendicular to the finished fitted
3.1.1 The three principal methods of installing chocks
hole centerline.
described herein are as follows:
4.1.2 Installation:
4.1.2.1 The ship must be waterborne and fairly well com-
This practice is under the jurisdiction of ASTM Committee F25 on Ships and
pleted before final alignment is accomplished. Ship shall be
Marine Technology and is the direct responsibility of Subcommittee F25.03 on
trimmed as close to the even keel position as practicable. The
Outfitting.
Current edition approved April 10, 1998. Published November 1998. Originally
same trim position shall be maintained throughout the align-
published as F 1309 - 90. Last previous edition F 1309 - 90.
ment procedure. No heavyweight shall be moved, loaded, or
Annual Book of ASTM Standards, Vol 01.03.
3 unloaded during alignment; ramps for Ro-Ros shall not be
Annual Book of ASTM Standards, Vol 08.01.
Available from the American Bureau of Shipping, 45 Eisenhower Dr., PO Box lowered or hoisted.
910, Paramus, NJ 07653.
4.1.2.2 Final machining of the fitted or bearing areas of the
Available from the American Welding Society, 2501 NW 7th St., Miami, FL
machinery bedplate to chock to foundation plate and the
33125.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
F 1309 – 98
mating areas of the fitted portion of the bolt/stud shank and to 4.2.3 Foundation Bolts—Install hold-down bolts before
the hole wall shall be a minimum of 85 % uniformly distrib- pouring of resin. Tension (torque) bolts only after resin
uted around the mating area. A light coat of Prussian blue shall manufacturer’s recommended cure time.
be used to check the contact areas.
4.3 Type B, Two-Piece Wedge Chock—The two-piece
4.1.2.3 Machinery shall be aligned using a sufficient number
wedges are drop-forged, medium steel or machined from steel
of jackscrews, shims, and wedges to accommodate adequate plate of equal strength or of other materials as specified.
up-down, port-starboard, and fore-aft movement without dis-
4.3.1 Applicable Techniques—Fig. 2 indicates the configu-
torting the machinery bedplate or foundation plate and, once
ration of Type C chocks to the machinery bedplate and the
aligned, be able to hold that alignment firmly during the final
foundation plate.
chock installation and bolt-fitting phase.
4.3.1.1 The taper on the sloped faces of each half of the
4.1.2.4 A sufficient number of fitted bolts and chocks shall
chock must not exceed a rise of one over a run of four.
be installed to maintain the alignment and prevent any relative
4.3.1.2 Align machinery in place as described in 4.1 and
movement between the machinery and the foundation as a
install the lower half of the tapered chock in place with the
result of vibration and sea state inputs. Number and position of
thicker end in first from the place installation. Ensure it does
fitted bolts shall comply with the engine manufacturer’s
not move by tach welding. Do not allow distortions or
requirements, if any.
separations.
4.1.2.5 Bolts shall be installed from the bottom up unless
4.3.1.3 Spotface the upper surface of the machinery bed-
surrounding interferences dictate otherwise.
plate where the finish has not been indicated.
4.1.2.6 The length of the fitted portion of the bolt/stub shank
4.3.2 Fitting of Chocks and Bolts—Fig. 3 indicates the
shall be 95 % of the combined thickness between spotfaces of
fitting of Type B chocks in way of the bedplates and foundation
the machinery bedpl
...