ASTM F2337-2011 Standard Test Method for Treestand Fall Arrest System《树顶支架阻止落下系统的标准试验方法》.pdf

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1、Designation: F2337 11An American National StandardStandard Test Method forTreestand Fall Arrest System1This standard is issued under the fixed designation F2337; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi

2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the loadcapacities for treestand fall arrest systems (FAS) and compo-nents or subs

3、ystems.1.2 This test method addresses equipment used in huntingsituations requiring personal protection against falls fromheights and applies to the manufacturers, distributors, purchas-ers, and users of such equipment.1.3 The values stated in inch-pound units are to be regardedas standard. The valu

4、es given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to esta

5、blish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2F1749 Specification for Fitness Equipment and FitnessFacility Safety Signage and Labels2.2 ANSI Standard:ANSI Z359.1 Safety Requirements f

6、or Personal Fall ArrestSystems, Subsystems and Components32.3 Other Document:Individual Manufacturers FAS Instruction3. Terminology3.1 The terminology and definitions in the referenced docu-ments are applicable to this practice.3.2 Definitions:3.2.1 anchorage, na component/structure to which a FBHis

7、 attached to the tree trunk.3.2.2 climbing belt, na strap/belt (or system of straps)which is fastened about the person in a manner so as to containthe torso and stabilize the users horizontal load while eitherworking from a vertical position to attach treestands, climbingdevices, and so forth, or du

8、ring ascent/descent of tree or ladder.A FBH may be constructed to additionally serve this function.3.2.3 connecting hardware, nincludes snap hooks,D-rings, carabineers, links, anchorage hardware, and buckles.Any hardware that connects the FAS components in series,thus creating a linear linkage along

9、 which the maximum arrestforce (MAF) acts.3.2.4 fall arrest system (FAS), na system which is as-sembled for the purpose of arresting an accidental fall of itsuser.AFAS consists of a full body harness, lanyard, anchoragemeans, and connecting hardware.3.2.5 full body harness (FBH), na component with a

10、design of straps which is fastened about the person in a mannerso as to contain the torso and distribute the fall arrest forcesover at least the upper thighs, pelvis, chest, and shoulders withmeans for attaching it to other components or subsystems.3.2.6 lanyards, na component consisting of a flexib

11、lestrap, rope, or wire rope for connecting a component such as aFBH directly or indirectly to an anchorage.3.2.7 maximum arrest force, nthe maximum force actingon the body at the instant of an arrest of its free fall.3.2.8 shock absorbers, na component used to reduce/absorb the energy gained by the

12、user of the FAS when falling.3.2.9 suspension relief device, na device to allow relief ofa persons weight on the lower extremities if suspended in aharness, or allow the user to descend to the ground. The deviceis to help maintain circulation in the legs and help preventsuspension trauma (blood pool

13、ing).1This test method is under the jurisdiction of ASTM Committee F08 on SportsEquipment and Facilities and is the direct responsibility of Subcommittee F08.16 onArchery Products.Current edition approved June 1, 2011. Published July 2011. Originally approvedin 2003. Last previous edition approved i

14、n 2010 as F2337 10. DOI: 10.1520/F2337-11.2For 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.3Available from Ame

15、rican National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.10 thigh/leg straps, nthe straps, which are integratedwith the buttock strap (optional) and a

16、re routed from back tofront across the groin area or loop around the upper part of thethigh.3.2.11 treestand, na device designed to be affixed to a treeor its branches so as to permit an individual to sit or standthereon for the purpose of attaining an elevated position fromwhich to observe, photogr

17、aph, or hunt.4. Summary of Test Method4.1 One system test shall consist of the testing of oneindividual fall arrest system unit for maximum arrest force(MAF) in accordance with the procedures in 7.1.4.2 One system test shall consist of the testing of oneindividual fall arrest system unit for perform

18、ance in accordancewith the procedures in 7.2.4.3 One system test shall consist of testing one individualfall arrest system unit for dynamic strength in accordance withthe procedures in Section 8.4.4 One climbing belt test shall consist of testing oneindividual climbing belt (for use only if FAS incl

19、udes integralclimbing belt) in accordance with the procedures in Section 9.4.5 For each test a test weight torso having the physicalproperties described in 6.3 or 6.4 shall be dropped from anadequate elevation to simulate a free-fall motion from atreestand platform.4.6 One static load test shall con

20、sist of testing one (1)individual Suspension Relief Device (for use only if FASincludes integral SRD) in accordance with the procedures inSection 10 of this standard.5. Significance and Use5.1 This test method is intended to measure the maximumarrest force and dynamic strength on treestand FAS andco

21、mponents or subsystems. This test is intended for programquality assurance and production quality control purposes. It isnot intended to be an independent material or product accep-tance test.6. Apparatus6.1 A vertical, rigid, round wood pole shall be used tomount the test weight torso and fall arre

22、st system (FAS) suchthat pole deflection is minimized during testing.6.2 The mounting pole diameter shall be 10 6 1 in. andshall have a minimum height necessary for free fall to meet theprovisions of 7.1.4, 7.2.4, 8.1.3, and 9.1.3.6.3 The test weight torso used during the performance testshall weigh

23、 220 6 2 lb. The test weight torso shall be inaccordance with ANSI Z359.1, Appendix B, Figs. 18 and 19.6.4 The test weight torso used during the dynamic strengthtest shall weigh not less than 300 lb or shall equal the weightof the stated weight capacity of the test subject 63 lb, orwhichever is grea

24、ter. The torso shall also be designed such thatit closely resembles the human shape and human center ofgravity.6.5 The test weight torso and test operator shall be raised tothe required elevation by means of a man lift, forklift/basket, orother device capable of providing means to ascend to theprope

25、r elevation and provide a stable and safe workingenvironment.6.6 The free fall may be induced by manual or automaticmeans, and shall accomplish an unobstructed, continuous freefall of the test weight torso.6.7 The instrumentation used to measure the MAF of theFAS should consist of a force sensor or

26、load cell capable ofmeasuring peak loads up to 3375 lb (15 kN). The recordingdata channel shall have a minimum sampling rate of 1000samples per second and an active frequency response band upto a corner frequency of 100 Hz + 1.2 dB, 3 dB.7. Performance Test Procedure7.1 The following procedures shal

27、l apply to one individualunit of a given FAS with the test torso as given in 6.3 dropped“feet first.”7.1.1 Read instructions accompanying the test subject toascertain the proper procedure for use and donning. Secure theFAS anchorage to the mounting pole and the test torso inaccordance with the devic

28、e manufacturers instructions.7.1.2 The force sensor or load cell shall be placed in serieswith the full body harness and lanyard or anchorage. The totalfall distance required is a distance of 6 ft or twice the maximumlanyard length or whichever is less.Any length added from theforce sensor or load c

29、ell and any connecting hardware must besubtracted from the total fall distance.7.1.3 Prior to performing the drop test, the anchorage shallbe properly secured with a permanent stop placed directlyunder the anchorage to the backside of the pole to eliminatemovement during test.7.1.4 Attach the quick

30、release mechanism to the test weighttorso. The test weight torso shall be raised to an elevation suchthat its free fall begins at the point above the anchorage equalto the maximum length of the lanyard (if adjustable) or adistance which allows 6 ft of free fall, whichever is less. Thetest weight tor

31、so shall be located as close to the pole aspractical or not greater than 1 ft with no tension in the lanyardprior to release. In such a manner, the free-fall distance willequal twice the maximum available length or 6 ft, whichever isless.7.1.5 The test weight torso shall be dropped “feet first” orot

32、herwise released as if to simulate a free-fall from a treestandplatform. The fall should be essentially vertical with minimal“swinging” of the test subject. The fall shall be closelyobserved for any unusual or unsafe action. Measure and recordthe maximum arrest force (MAF), deceleration distance, an

33、dwhether or not any test weight torso detaches from the harness.After the drop, the test weight torso is to remain suspended bythe FAS for a period of 2 min.7.1.6 After the FAS has been engaged, the test weight torsoshall be lowered to the ground and the FAS inspected fordamage. Compare test results

34、 to the requirements set forth in12.1-12.3.7.2 The following procedures shall apply to one individualunit of a given FAS with the test weight torso as given in 6.3dropped “face first.”7.2.1 Read instructions accompanying the test subject toascertain the proper procedure for use and donning. Secure t

35、heF2337 112FAS anchorage to the mounting pole and the test weight torsoin accordance with the device manufacturers instructions.7.2.2 The total fall distance required is a distance of 6 ft ortwice the maximum lanyard length, or whichever is less. Anyadded length from any connecting hardware must be

36、subtractedfrom the total fall distance.7.2.3 Prior to performing the drop test, the anchorage shallbe properly secured with a permanent stop placed directlyunder the anchorage to the backside of the pole to eliminatemovement during test.7.2.4 Attach the quick release mechanism to the test weighttors

37、o at a point located at the buttocks or other means ofattachment that will allow the test torso to be releasedappropriately. The test weight torso shall be raised to anelevation such that its free-fall begins at the point above theanchorage equal to the maximum length of the lanyard (ifadjustable) o

38、r a distance which allows 6 ft of free fall,whichever is less. The test weight torso shall be located asclose to the pole as practical or not greater than 1 ft with notension in the lanyard prior to release. In such a manner, thefree-fall distance will equal twice the maximum availablelength or 6 ft

39、, whichever is less.7.2.5 The test weight torso shall be dropped “face first” orotherwise released as if to simulate a free-fall from a treestandplatform. The fall should be essentially vertical with minimal“swinging” of the test subject. The fall shall be closelyobserved for any unusual or unsafe a

40、ction. Determine whetheror not any test torso detaches from the harness. After the drop,the test weight torso is to remain suspended by the FAS for aperiod of 2 min.7.2.6 After the FAS has been engaged, the test weight torsoshall be lowered to the ground and the FAS inspected fordamage. Compare test

41、 results to the requirements set forth in12.1 and 12.2.8. Dynamic Strength Test Procedure8.1 The following procedures shall apply to one individualunit of a given FAS and test weight torso as given in 6.4 anddropped “feet first.”8.1.1 Read instructions accompanying the test subject toascertain the p

42、roper procedure for use and donning. Secure theFAS to the mounting pole and the test weight torso inaccordance with the device manufacturers instructions.8.1.2 Prior to performing the drop test, the anchorage shallbe properly secured with a permanent stop placed directlyunder the anchorage to the ba

43、ckside of pole to eliminatemovement during test.8.1.3 Attach the quick release mechanism to the test weighttorso. The test weight torso shall be raised to an elevation suchthat its free-fall begins at the point above the anchorage equalto the maximum length available by the lanyard or a distancewhic

44、h allows 6 ft of free fall, whichever is less. The test weighttorso shall be located as close to the pole as practical or notgreater than 1 ft with no tension in the lanyard prior to release.In such a manner, the free-fall distance will equal twice themaximum available lanyard length or 6 ft, whiche

45、ver is less.8.1.4 Release the test weight torso using the quick releasemechanism. The test weight torso shall be dropped “feet first”or otherwise released as if to simulate a free-fall from atreestand platform. The fall should be essentially vertical withminimal “swinging” of the test subject. The f

46、all shall be closelyobserved for any unusual or unsafe action. After the drop, thetest weight torso is to remain suspended by the FAS for aperiod of 2 min.8.1.5 After the FAS has been engaged, the test weight torsoshall be lowered to the ground and the FAS inspected fordamage. Record the test result

47、s and whether or not the testweight torso detaches from the FBH. Compare the test resultsto the requirements set forth in 12.4.9. Climbing Belt Test ProcedureNOTE 1For use only if FAS includes integral climbing belt.9.1 The following procedures shall apply to one individualunit of a given FAS with c

48、limbing belt (if provided) and testweight torso as given in 6.4 dropped “feet first.”9.1.1 Read instructions accompanying the test subject toascertain the proper procedure for use and donning. Secure theFAS to the mounting pole and the test weight torso inaccordance with the device manufacturers ins

49、tructions.9.1.2 Prior to performing the drop test, the climbing beltshall be properly secured with a permanent stop placed directlyunder the climbing belt to the backside of pole to eliminatemovement during the test.9.1.3 Attach the quick release mechanism to the neck ringon the test weight torso. The climbing belt length shall beadjusted to a length that allows a horizontal gap distance of 246 1 in. (610 mm) or the maximum length of the climbing belt,which ever is less, between the test torso and the closestperimeter of the test pole. Record the effective length