ASTM F1309-98(2018)

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

SIGNIFICANCE AND USE
3.1 This practice provides the three principal methods of fitting chocks to marine machinery foundations to ensure that the machinery is free of vibration and perfectly aligned after installation.  
3.1.1 The three principal methods of installing chocks described herein are as follows:
3.1.1.1 Type A—Epoxy-based resin, nonshrinking Chockfast Orange PR 610 TCF by Philadelphia Resin Corp., or equal, and
3.1.1.2 Type B—Two-piece wedge chocks.
3.1.1.3 Type C—Solid, one-piece fitted chocks.
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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Mar-2018
• ICS: 47.020.20 - Marine engines and propulsion systems
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.03 - Outfitting and Deck Machinery

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: F1309 − 98 (Reapproved 2018) An American National Standard
Standard Practice for
Installation Procedures for Fitting Chocks to Marine
Machinery Foundations
This standard is issued under the fixed designation F1309; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope American Welding Society Publication, AWS D1.1 Struc-
tural Welding Code
1.1 This practice covers the acceptable methods of fitting
chocks to marine machinery foundations.
3. Significance and Use
1.2 The values stated in SI units shall be regarded as
3.1 This practice provides the three principal methods of
standard. The values in parentheses are for information only.
fitting chocks to marine machinery foundations to ensure that
1.3 This standard does not purport to address all of the
the machinery is free of vibration and perfectly aligned after
safety concerns, if any, associated with its use. It is the
installation.
responsibility of the user of this standard to establish appro-
3.1.1 The three principal methods of installing chocks
priate safety, health, and environmental practices and deter-
described herein are as follows:
mine the applicability of regulatory limitations prior to use.
3.1.1.1 Type A—Epoxy-based resin, nonshrinking Chock-
1.4 This international standard was developed in accor-
fast Orange PR 610 TCF by Philadelphia Resin Corp., or equal,
dance with internationally recognized principles on standard-
and
ization established in the Decision on Principles for the
3.1.1.2 Type B—Two-piece wedge chocks.
Development of International Standards, Guides and Recom-
3.1.1.3 Type C—Solid, one-piece fitted chocks.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
4. Procedure
4.1 General Requirements for Types A, B, and C Chocking
2. Referenced Documents
Systems:
2.1 ASTM Standards:
4.1.1 Machining:
A370 Test Methods and Definitions for Mechanical Testing
4.1.1.1 Type A chocks, machinery bedplates, foundation
of Steel Products
plates, and bolts do not require finish machining if the chocks
D638 Test Method for Tensile Properties of Plastics
are not designed to be removed. Unless specified otherwise,
D648 Test Method for Deflection Temperature of Plastics
Types B and C chock, bolts/studs, machinery bedplate, foun-
Under Flexural Load in the Edgewise Position
dation plates, and fitted holes need to be finished machined and
D695 Test Method for Compressive Properties of Rigid
fitted.
Plastics
4.1.1.2 Surfaces in way of the chock areas on the machinery
2.2 Other Documents:
bedplate and the foundation plate may be machined before
American Bureau of Shipping Rules for Building and
installation or while the ship is not waterborne, or both.
Classing Steel Vessels
4.1.1.3 Unless otherwise specified, all finished surfaces
shall be finished to a maximum of 0.003–mm roughness height
average (RHA).
4.1.1.4 Finished areas on the machinery bedplate and the
This practice is under the jurisdiction of ASTM Committee F25 on Ships and foundation plate in way of the chocks shall be sufficiently
Marine Technology and is the direct responsibility of Subcommittee F25.03 on
greater in size than the chock to prevent interference from the
Outfitting and Deck Machinery.
unfinished area with the chock during installation.
Current edition approved April 1, 2018. Published May 2018. Originally
4.1.1.5 Spotface hole edge radius shall be such that there
approved in 1990. Last previous edition approved in 2012 as F1309 – 98 (2012).
DOI: 10.1520/F1309-98R18.
will not be any interference between it and the bolt head-to-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
shank radius. The spotface area shall be sufficiently greater in
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available from American Bureau of Shipping (ABS), ABS Plaza, 16855 Available from American Welding Society (AWS), 8669 NW 36 St., #130,
Northchase Dr., Houston, TX 77060, http://www.eagle.org. Miami, FL 33166-6672, http://www.aws.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1309 − 98 (2018)
area than that of the bolt head or nut so as not to cause any 4.2.1 Provision for Future Machinery Removal—To prevent
interference when tightening or with the tooling used. The adhesion of chocks to adjoining surfaces and facilitate future
spotface surfaces shall be perpendicular to the finished fitted removal of machinery, spray an aerosol release agent on all
hole centerline. contact surfaces. This precaution allows these chocks to be
4.1.2 Installation: removed in a similar manner to steel chocks.
4.1.2.1 The ship must be waterborne and fairly well com- 4.2.2 Applicable Techniques:
pleted before final alignment is accomplished. Ship shall be
4.2.2.1 Position dams to retain the compound during pour-
trimmed as close to the even keel position as practicable. The
ing and curing without distortion. Damming materials may be
same trim position shall be maintained throughout the align-
expanded plastic, foam rubber stripping and sheet metal, or
ment procedure. No heavyweight shall be moved, loaded, or
light gage flat bar. (See Fig. 1.)
unloaded during alignment; ramps for Ro-Ros shall not be
4.2.2.2 Follow resin manufacturer’s instructions including
lowered or hoisted.
the relative design parameters on loading, temperature, allow-
4.1.2.2 Final machining of the fitted or bearing areas of the
able thickness, additional design, installation, bolt tension, and
machinery bedplate to chock to foundation plate and the
inspection.
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 f
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1309 − 98 (Reapproved 2012) F1309 − 98 (Reapproved 2018)An American National Standard
Standard Practice for
Installation Procedures for Fitting Chocks to Marine
Machinery Foundations
This standard is issued under the fixed designation F1309; 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 (´) indicates an editorial change since the last revision or reapproval.
1. 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 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
D638 Test Method for Tensile Properties of Plastics
D648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
D695 Test Method for Compressive Properties of Rigid Plastics
2.2 Other Documents:
American Bureau of Shipping Rules for Building and Classing Steel Vessels
This practice is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.03 on Outfitting
and Deck Machinery.
Current edition approved Oct. 1, 2012April 1, 2018. Published October 2012May 2018. Originally approved in 1990. Last previous edition approved in 20072012 as
F1309 – 98 (2007).(2012). DOI: 10.1520/F1309-98R12.10.1520/F1309-98R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American Bureau of Shipping (ABS), ABS Plaza, 16855 Northchase Dr., Houston, TX 77060, http://www.eagle.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1309 − 98 (2018)
American Welding Society Publication, AWS D1.1 Structural Welding Code
3. Significance and Use
3.1 This practice provides the three principal methods of fitting chocks to marine machinery foundations to ensure that the
machinery is free of vibration and perfectly aligned after installation.
3.1.1 The three principal methods of installing chocks described herein are as follows:
3.1.1.1 Type A—Epoxy-based resin, nonshrinking Chockfast Orange PR 610 TCF by Philadelphia Resin Corp., or equal, and
3.1.1.2 Type B—Two-piece wedge chocks.
3.1.1.3 Type C—Solid, one-piece fitted chocks.
4. Procedure
4.1 General Requirements for Types A, B, and C Chocking Systems:
4.1.1 Machining:
4.1.1.1 Type A chocks, machinery bedplates, foundation plates, and bolts do not require finish machining if the chocks are not
designed to be removed. Unless specified otherwise, Types B and C chock, bolts/studs, machinery bedplate, foundation plates, and
fitted holes need to be finished machined and fitted.
4.1.1.2 Surfaces in way of the chock areas on the machinery bedplate and the foundation plate may be machined before
installation or while the ship is not waterborne, or both.
4.1.1.3 Unless otherwise specified, all finished surfaces shall be finished to a maximum of 0.003–mm roughness height average
(RHA).
4.1.1.4 Finished areas on the machinery bedplate and the foundation plate in way of the chocks shall be sufficiently greater in
size than the chock to prevent interference from the unfinished area with the chock during installation.
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-shank
radius. The spotface area shall be sufficiently greater in area than that of the bolt head or nut so as not to cause any interference
when tightening or with the tooling used. The spotface surfaces shall be perpendicular to the finished fitted hole centerline.
4.1.2 Installation:
4.1.2.1 The ship must be waterborne and fairly well completed before final alignment is accomplished. Ship shall be trimmed
as close to the even keel position as practicable. The same trim position shall be maintained throughout the alignment procedure.
No heavyweight shall be moved, loaded, or unloaded during alignment; ramps for Ro-Ros shall not be lowered or hoisted.
4.1.2.2 Final machining of the fitted or bearing areas of the machinery bedplate to chock to foundation plate and the mating
areas of the fitted portion of the bolt/stud shank and to the hole wall shall be a minimum of 85 % uniformly distributed around
the mating area. A light coat of Prussian blue shall be used to check the contact areas.
4.1.2.3 Machinery shall be aligned using a sufficient number of jackscrews, shims, and wedges to accommodate adequate
up-down, port-starboard, and fore-aft movement without distorting the machinery bedplate or foundation plate and, once aligned,
be able to hold that alignment firmly during the final chock installation and bolt-fitting phase.
4.1.2.4 A sufficient number of fitted bolts and chocks shall be installed to maintain the alignment and prevent any relative
movement between the machinery and the foundation as a result of vibration and sea state inputs. Number and position of fitted
bolts shall comply with the engine manufacturer’s requirements, if any.
4.1.2.5 Bolts shall be installed from the bottom up unless surrounding interferences dictate otherwise.
4.1.2.6 The length of the fitted portion of the bolt/stub shank shall be 95 % of the combined thickness between spotfaces of the
machinery bedplate, chock, and foundation plate.
4.1.2.7 Final reaming of the fitted bolt holes or machining of the bolt shank shall occur after final alignment.
4.1.2.8 Final torquing of each bolt/nut/stub assembly shall be of sufficient torque to preload the nonfitted portions of the
bolt/nut/stub enough to prevent loosening as a result of vibrations, operations, hull, and sea state inputs.
4.1.2.9 Welding shall be performed in accordance with American Bureau of Shipping or the American Welding Society,
Structural Code AWS D1.1.
4.1.3 Testing (If Specified):
4.1.3.1 Steel tension tests shall be made in accordance with Test Methods and Definitions A370.
4.1.3.2 Compression yield an
...