1、Designation: F 956 91 (Reapproved 2006)An American National StandardStandard Specification forBell, Cast, Sound Signalling1This standard is issued under the fixed designation F 956; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers cast sound-signalling bells,together with bulkhead mounting plates for the small
3、er bells,for use on ships, boats, and other marine craft, for compliancewith the rules in the convention on the International Regula-tions for Preventing Collisions at Sea (commonly calledColregs).2See Appendix X1.1.2 Bells and bulkhead mounting plate shall be sized asindicated in Section 4 (see App
4、endix X2).1.3 For consistency with International Regulations, all mea-surements are in SI units.2. Referenced Documents2.1 ASTM Standards:3B 584 Specification for Copper Alloy Sand Castings forGeneral Applications2.2 Other Documents:CFR 33 Part 8172 Implementing Rules2CFR 33 Part 86, Subpart B, Bell
5、 or Gong23. Terminology3.1 Definitions:3.1.1 bell, na hollow metal instrument that rings whenstruck.3.1.2 cast, vto form by molding in a hollow form forshaping a liquid or plastic substance.3.1.3 clapper, nthe hammer like object inside a bell.4. Classification4.1 Bells shall be furnished in the foll
6、owing sizes, based onbellmouth diameter in millimetres (see Appendix X2):4.1.1 150 mm,4.1.2 200 mm (2.2 kg),4.1.3 200 mm (4.5 kg),4.1.4 250 mm,4.1.5 300 mm,4.1.6 360 mm,4.1.7 400 mm, and4.1.8 550 mm.4.2 Bulkhead mounting plates shall be furnished for thefollowing bell sizes:4.2.1 150 mm, and4.2.2 20
7、0 mm.5. Ordering Information5.1 Orders for materials under this specification shall in-clude the following information:5.1.1 ASTM designation and year of issue.5.1.2 Number of bells.5.1.3 Size of bell(s) (see 4.1).5.1.4 Additional bulkhead mounting plates (see 4.2 and6.2.2).5.1.5 Inscription require
8、d (see 12.1).5.1.6 Packaging, if other than commercial (see Section13 ).6. Materials and Manufacture6.1 Material:6.1.1 Bell bodies, clappers, and other cast fittings and partsshall be copper alloy conforming to Specification B 584, UNSC 87200.6.1.2 Fittings such as bolts, nuts, washers, pins, and su
9、p-porting lugs shall be of copper alloy compatible with the bellcastings.6.2 Manufacture:6.2.1 Construction shall be in accordance with Fig. 1, Fig. 2,and Fig. 3.6.2.2 For Fig. 1 and Fig. 2, one bulkhead mounting plateshall be furnished with each bell, however, additional mount-ing plates may be ord
10、ered.6.2.3 For all bells, two extra supporting nuts, washers, andacorn nuts (where used) shall be furnished.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.07 onGeneral Requirements.Current edition
11、 approved Dec. 1, 2006. Published January 2007. Originallyapproved in 1986. Last previous edition approved in 2001 as F 956 91 (2001).2Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.3For referen
12、ced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
13、onshohocken, PA 19428-2959, United States.7. Acoustic Requirements Acoustic Requirements7.1 Bells shall have full, clear, round, and farreaching tones.The sound pressure level shall not be less than 110 dB at adistance of 1 m from it.8. Dimensions, Mass, and Permissible Variations8.1 Dimensions and
14、mass of bells, together with tolerances,shall conform to Fig. 1, Fig. 2, and Fig. 3.9. Workmanship, Finish, and Appearance9.1 Bells shall be free of cracks, burrs, sharp cutting edges,adhering sand, and other defects and blemishes affecting theirlife, appearance, and serviceability.9.2 Bell exterior
15、s and the lower part of the interior, from thebellmouth to 10 mm above the line where the clapper strikesthe bell, shall have a smooth polished finish. The “visible” partof the clapper shall have a similar finish.10. Sampling10.1 For orders for 1 or 2 bells of the same size, each bellshall be inspec
16、ted and tested.10.2 For orders for 3 to 10 bells of the same size, 2 bellsshall be selected at random. If any one of them fails to meet therequirements, then all bells in the order shall be inspected andtested.10.3 For orders for more than 10 bells of the same size.They shall be separated into group
17、s of 10 (or fraction thereof)for sampling purposes.11. Inspection and Testing11.1 ResponsibilityUnless otherwise specified in the or-der, the manufacturer is responsible for the performance of allinspection requirements specified herein. The manufacturermay utilize his own facilities or any commerci
18、al facilitiesacceptable to the purchaser. The purchaser reserves the right toperform any of the inspections set forth in this specificationwhere such inspections are deemed necessary to assure thatsupplies conform to the prescribed requirements. Nonconform-ing bells shall not be offered for delivery
19、.11.2 Inspections:11.2.1 The dimensions of the bell and appurtenances shallbe checked to ensure that they are within the specifiedtolerances.11.2.2 The bell, without bracket or mounting plate (for 150mm and 200 mm light), and clapper shall be weighed sepa-rately to ensure that the mass is within the
20、 specified tolerance.11.2.3 For the 150 and 200 light sizes, the brackets shall beengaged and disengaged from each of the mounting plates toensure portability.Mass and Dimensions of BellsBell Size,mmBell Mass,kgDimensions, mmAB150 1.4 150 105200 2.2 200 133200 4.5 200 152NOTE 1All dimensions in mill
21、imetres.Tolerances:Up to 150 mm: 62mmOver 150 mm: 63mmMass of Bell: 60.2 kg (60.3 kg for 4.5 kg bell).Mass of Clapper: No less than 3 % of bell mass.FIG. 1 Sizes 150 and 200NOTE 1All dimensions in millimetres.Tolerances:Up to 125 mm: 62mmOver 125 mm: 63mmMass of bell: 9 6 0.45 kg.Mass of Clapper: 0.
22、5 6 0.05 kg.FIG. 2 Size 250F 956 91 (2006)211.3 Acoustic TestsAcoustic tests shall be conducted onlyfor the 200 mm heavy and larger bells to check the require-ments of 7.1. Each bell tested shall be supported by the yoke oreyebolt with the clapper in place. The bell shall be rung bystriking the bell
23、 with the clapper, activated by a lanyard.11.3.1 The sound, produced in accordance with AppendixX1.1, shall be measured in a space with no large soundreflecting surfaces (except the floor) that are within 10 m. Thesound shall be measured using a commercial sound level meterlocated at a distance of 1
24、 m and at a height above the floorequal to that of the striking point.12. Product Marking12.1 Owners inscription shall be as specified. It shall beapplied either by being cast in relief (raised) or by engraving.Size and location shall be the same as U.S. shown in Fig. 1,Fig. 2, and Fig. 3.TABLE Cont
25、inuedDimensions of Bells, mmBell Size ABCDEFG H300 300 270 50 65 25 208 310 M16 3 2360 360 320 55 85 30 259 370 M20 3 2.5400 400 350 60 100 30 291 405 M24 3 3550 550 475 90 130 35 399 540 M24 3 3Mass of Bells, kgBell SizeBell ClapperMass Tolerance Mass Tolerance300 14 60.70 0.60 0.04360 27 61.35 0.9
26、5 0.07400 34 61.7 1.35 0.09550 90 63.6 3.40 0.18NOTE 1All dimensions in millimetres:Tolerances:Up to 125 mm: 62mm125 to 250 mm: 63mm250 to 375 mm: 65mm375 to 500 mm: 66mmOver 500 mm: 610 mmFIG. 3 Size 300 and AboveF 956 91 (2006)312.1.1 For bells intended for use on ships, boats, and otherwatercraft
27、 of the U.S. Army and Navy and other governmentagencies, the inscription shall be U.S.; size and location shallbe as shown in Fig. 1, Fig. 2, and Fig. 3.12.2 The letters ASTM and this specification number shallbe engraved on the shank of each bell in figures at least 6 mmhigh.12.3 The manufacturer m
28、ay engrave his brand name or logoon the shank of the bell.13. Packaging and Package Marking13.1 No preservation is required.13.2 Unless otherwise specified, packing shall conform tomanufacturers normal commercial practice, and in such amanner that will ensure acceptance by common carrier andafford p
29、rotection against physical and mechanical damageduring shipment. Shipping containers shall conform to carrierregulations as applicable to the mode of transportation.13.3 For procurements by the U.S. Department of Defensefor long-term storage or overseas shipment, the requirementsof Annex A1 apply. I
30、n such case the required level of packingshall be specified.14. Keywords14.1 bell; bell casting; clapper; sound pressure level; soundsignallingANNEX(Mandatory Information)A1. PACKING FOR DoD PROCUREMENTSA1.1 Applicable Documents for This Annex Only:A1.1.1 Federal Specifications:PPP-B-576 Box, Wood,
31、Cleated, Veneer, Paper Overlaid2PPP-B-585 Boxes, Wood, Wirebound2PPP-B-591 Boxes, Fiberboard, Wood-Cleated2PPP-B-601 Boxes, Wood, Cleated-Plywood2PPP-B-621 Boxes, Wood, Nailed and Lock Corner2PPP-B-636 Box, Fiberboard2PPP-B-640 Boxes, Fiberboard, Corrugated, Triple, Wall2A1.1.2 Military Standard:MIL
32、-STD-129 Marking for Shipment and Storage2A1.1.3 Other Documents:Official Classification Committee Rules4Uniform Freight Classification Rules4A1.2 PreservationNone required.A1.3 PackingThe bells shall be cushioned, blocked, orbraced within the containers in a manner to prohibit movementand the clapp
33、ers shall be secured or cushioned to preventknocking. Unless otherwise specified in the order, one bellshall be packed per container. When more than one bell isrequired to be packed in each container, the gross mass of thewood or wood-cleated boxes shall not exceed approximately100 kg.A1.3.1 Level A
34、Bells shall be packed in containers conforming to any one ofthe following specifications at the option of the manufacturer:Specification: Type or Class:PPP-B-585 Class 3PPP-B-601 Overseas typePPP-B-621 Class 2A1.3.1.1 Boxes shall be closed and banded in accordancewith the applicable box specificatio
35、n or appendix thereto.A1.3.2 Level BBells shall be packed in boxes conforming to any of thefollowing specifications at the option of the manufacturer:Specification: Type or Class:PPP-B-576 Class 2PPP-B-585 Class 2 usePPP-B-591 Weather-resistantPPP-B-601 Domestic typePPP-B-621 Class 1PPP-B-636 Weathe
36、r-resistantPPP-B-640 Class 2A1.3.2.1 Box closure and banding or reinforcement shall beas specified in the box specification or appendix thereto withMethod V closure applicable to PPP-B-636 boxes. The grossmass of wood or wood-cleated boxes shall not exceed 100 kg.A1.3.3 Level CBells shall be packed
37、as specified for Level B except that thecontainers may be of the non weather-resistant type or gradeand Method I closure shall apply for PPP-B-636 boxes.A1.4 MarkingIn addition to any special marking requiredby the order, shipments shall be marked in accordance withMIL-STD-129.4Uniform Classificatio
38、n Committee Rules available from Uniform ClassificationCommittee, Tariff Publishing Officer, 222 S. Riverside Plaza, Chicago, IL 60606.F 956 91 (2006)4APPENDIXES(Nonmandatory Information)X1. EXCERPTS FROM U.S. COAST GUARD RULESX1.1 For general information, the following is quoted fromU.S. Coast Guar
39、d Commandant Instruction M 16672.2: Navi-gation Rules, International-Inland, Division II, Part D, Rule33Equipment for Sound Signals.“(A) A vessel of 12 meters or more in length shall beprovided with a whistle and a bell and a vessel of 100 metersor more in length, shall, in addition, be provided wit
40、h a gong,the tone and sound of which cannot be confused with that ofthe bell. The whistle, bell and gong shall comply with thespecifications in Annex III to these regulations. The bell orgong, or both, may be replaced by other equipment having thesame respective sound characteristics, provided that
41、manualsounding of the prescribed signals shall always be possible.(B) A vessel of less than 12 meters in length shall not beobliged to carry the sound signalling appliances prescribed inParagraph (A) of this rule but if she does not, she shall beprovided with some other means of making an efficient
42、soundsignal.In Addition:Division II, Part E, Annex IIITechnical Detail of SoundSignalling Appliances, and 33 CFR Part 86, Subpart B:2. Bell or Gong:(A) Intensity of SignalA bell or gong, or other devicehaving similar sound characteristics shall produce a soundpressure level of not less than 110 dB a
43、t a distance of 1 meterfrom it.(B) ConstructionBells and gongs shall be made ofcorrosion-resistant material and designed to give a clear tone.The diameter of the mouth of the bell shall be not less than 300mm for vessels of 20 meters or more in length, and shall be notless than 200 mm for vessels of
44、 12 meters or more but of lessthan 20 meters in length. Where practicable, a power-drivenbell striker is recommended to ensure constant force butmanual operation shall be possible. The mass of the strikershall be not less than 3 % of the mass of the bell.3. ApprovalThe construction of sound signal a
45、ppliances,their performance and their installation on board the vesselshall be to the satisfaction of the appropriate authority of thestate whose flag the vessel is entitled to fly.Division II, Part E, Subpart BBell or Gong, Inland Rules:86.21 Intensity of SignalA bell or gong, or other devicehaving
46、 similar sound characteristics shall produce a soundpressure level of not less than 110 dB at 1 meter.86.23 ConstructionBells and gongs shall be made ofcorrosion-resistant material and designed to give a clear tone.The diameter of the mouth of the bell shall be not less than 300mm for vessels of mor
47、e than 20 meters in length, and shall benot less than 200 mm for vessels of 12 to 20 meters in length.The mass of the striker shall be not less than 3 % of the massof the bell. The striker shall be capable of manual operation.NOTE X1.1When practicable, a power-driven bell striker is recom-mended to
48、ensure constant force.”X2. GUIDELINES FOR USE OF BELLSX2.1 The ships bells covered by this specification areintended for use on the following:X2.1.1 Bell Type:X2.1.1.1 150 mm and 200 mm (2.2 kg)Small craft and boats less than 12 m in length, quarter-deckbells and fire bells.X2.1.1.2 200 mm (4.5 kg)B
49、oats 12 m to 20 m in lengthand ships watch and fire bell.X2.1.1.3 250 mmVessels 12 m to 20 m in length, subma-rines less than 100 m in length.X2.1.1.4 300 mmVessels 20 m to 50 m in length, subma-rines 100 m and over in length.X2.1.1.5 360 mmVessels 50 m to 75 m in length.X2.1.1.6 400 mmVessels 75 m to 150 m in length.X2.1.1.7 550 mmVessels over 150 m in length.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised t
