1、Designation: F956 91 (Reapproved 2012) An American National StandardStandard Specification forBell, Cast, Sound Signalling1This standard is issued under the fixed designation F956; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, th
2、e year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () 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 smaller
3、 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 Appen
4、dix X2).1.3 For consistency with International Regulations, all mea-surements are in SI units.2. Referenced Documents2.1 ASTM Standards:3B584 Specification for Copper Alloy Sand Castings forGeneral Applications2.2 Other Documents:2CFR 33 Part 8172 Implementing RulesCFR 33 Part 86, Subpart B, Bell or
5、 Gong3. 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, nhammer like object inside a bell.4. Classification4.1 Bells shall be furnished in the following si
6、zes, 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, and4.2.2 200 mm.5.
7、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 required (see 1
8、2.1).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 B584, UNSC87200.6.1.2 Fittings such as bolts, nuts, washers, pins, and sup-porting
9、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 ordered.6.2.3
10、 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 approved
11、May 1, 2012. Published May 2012. Originallyapproved in 1986. Last previous edition approved in 2006 as F956 91 (2006).DOI: 10.1520/F0956-91R12.2Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.3Fo
12、r referenced 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700
13、, West Conshohocken, PA 19428-2959. United States17. Acoustic Requirements7.1 Bells shall have full, clear, round, and far reachingtones. The sound pressure level shall not be less than 110 dB ata distance of 1 m from it.8. Dimensions, Mass, and Permissible Variations8.1 Dimensions and mass of bells
14、, 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 exteriors and the low
15、er 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 inspected and teste
16、d.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 groups of 10 (or f
17、raction thereof)for sampling purposes.11. Inspection and Testing11.1 ResponsibilityUnless otherwise specified in theorder, the manufacturer is responsible for the performance ofall inspection requirements specified herein. The manufacturermay utilize his own facilities or any commercial facilitiesac
18、ceptable 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.11.2 Inspectio
19、ns: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 specified tole
20、rance.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 millimetres.Toleran
21、ces: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: 0.5 6 0.05 kg.FIG
22、. 2 Size 250F956 91 (2012)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 with the clappe
23、r, 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 m and at a heig
24、ht 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. 3.12.1.1 For bells intended
25、for use on ships, boats, and otherwatercraft 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.Dimensions of Bells, mmBell Size ABCDEFG H300 300 270 50 65 25 208 310 M16 2360 360 320 55 85 30 259 37
26、0 M20 2.5400 400 350 60 100 30 291 405 M24 3550 550 475 90 130 35 399 540 M24 3Mass of Bells, kgBell SizeBell ClapperMass Tolerance Mass Tolerance300 14 0.70 0.60 0.04360 27 1.35 0.95 0.07400 34 1.7 1.35 0.09550 90 3.6 3.40 0.18NOTE 1All dimensions in millimetres:Tolerances:Up to 125 mm: 62mm125 to
27、250 mm: 63mm250 to 375 mm: 65mm375 to 500 mm: 66mmOver 500 mm: 610 mmFIG. 3 Size 300 and AboveF956 91 (2012)312.2 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 may engrave his brand name or logoon the shan
28、k 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 protection against physical and mechanical da
29、mageduring 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. In such case the required level of packingsha
30、ll 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, Cleated, Veneer, Paper Overlaid2PPP-B-585 Bo
31、xes, 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-STD-129 Marking for Shipment and Storage2A1
32、.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 clappers shall be secured or cushioned to prevent
33、knocking. 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:Bells shall be packed in containers conform
34、ing 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 specification or appendix thereto.A1.3.2 Level B:Bells
35、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 Weather-resistantPPP-B-640 Class 2A1.3.2.1 Box c
36、losure 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 C:Bells shall be packed as specified for Level B except that thec
37、ontainers 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 Classification Committee Rules available from Uniform
38、ClassificationCommittee, Tariff Publishing Officer, 222 S. Riverside Plaza, Chicago, IL 60606.F956 91 (2012)4APPENDIXES(Nonmandatory Information)X1. EXCERPTS FROM U.S. COAST GUARD RULESX1.1 For general information, the following is quoted fromU.S. Coast Guard Commandant Instruction M 16672.2: Navi-g
39、ation 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 with a gong,the tone and sound of which canno
40、t 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 manualsounding of the prescribed signals s
41、hall 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 soundsignal.In Addition:Division II, Part
42、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 at a distance of 1 meterfrom it.(B) Constru
43、ctionBells 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 12 meters or more but of lessthan 20 mete
44、rs 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 appliances,their performance and their inst
45、allation 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 similar sound characteristics shall produ
46、ce 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 more than 20 meters in length, and shall beno
47、t 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 ensure constant force.”X2. GUIDELINES FOR
48、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)Boats 12 m to 20 m in lengthand ships watch
49、 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 that determination of the vali
