1、 Tentative Interim Amendment NFPA1971 Standard on Protective Ensembles for Structural Fire Fighting and Proximity Fire Fighting 2013 Edition Reference: Various TIA 13-3 (SC 13-8-23/TIA Log #1100) Pursuant to Section 5 of the NFPA Regulations Governing the Development of NFPA Standards, the National
2、Fire Protection Association has issued the following Tentative Interim Amendment to NFPA 1971, Standard on Protective Ensembles for Structural Fire Fighting and Proximity Fire Fighting, 2013 edition. The TIA was processed by the Technical Committee on Structural and Proximity Fire Fighting Protectiv
3、e Clothing and Equipment and the Correlating Committee on Fire and Emergency Services Protective Clothing and Equipment, and was issued by the Standards Council on August 1, 2013, with an effective date of August 20, 2013. A Tentative Interim Amendment is tentative because it has not been processed
4、through the entire standards-making procedures. It is interim because it is effective only between editions of the standard. A TIA automatically becomes a public input of the proponent for the next edition of the standard; as such, it then is subject to all of the procedures of the standards-making
5、process. 1. Revise 7.7.22 to read as follows: 7.7.22 Gloves shall be tested for grip as specified in Section 8.38, Grip Test, and shall not have a drop of force of more than 30 percent from the peak pull force value in any 0.2 second interval. 2. Revise Section 8.38 to read as follows: 8.38.2.1 Samp
6、les for conditioning shall be whole gloves pairs. 8.38.3.4 Specimen glove pairs shall be tested after being wet conditioned for wet conditions as specified in 8.1.9. 8.38.4.1 Pulling Device. The pulling device shall be a 3.2 cm (1 in.) diameter fiberglass pole attached to an overhead calibrated forc
7、e measuring device in such a fashion that pulls on the pole will be perpendicular to the ground and downward in direction. This pole shall be used until surface degradation occurs. The force measuring system shall provide a graphical plot of force-vs-time. 8.38.5.1 Test subjects shall be selected so
8、 that their hand dimensions are as close as possible to the middle of the range for hand length and hand circumference as specified in Table 6.7.6.1 (ab) and Table 6.7.6.1(d) for size small and size large gloves. At least three test subjects shall be selected for both size small and size large. 8.38
9、.5.4 The test subject and the test subjects hand shall be positioned as shown in Figure 8.38.5.4(a) and Figure 8.38.5.4(b), and as described below: shall then make three pulls on the pulling device with gloves with peak and minimum pull force values measured. Pulls shall be performed as described 8.
10、38.5.4.1 through 8.38.5.4.6. The test subject shall extend the arms in front of the body at shoulder height to grab the pulling device for pulling vertically down from the ceiling. Figure 8.38.5.4 (a) Position of test subject body, arms, and hands with respect to pole. Photo Courtesy Intertek Testin
11、g Services, Used by Permission. Figure 8.38.5.4 (b) Close-up of position of test subject hands on pole. Photo Courtesy Intertek Testing Services, Used by Permission. 8.38.5.4.1 The test subject shall stand facing the pole with feet shoulder width apart. with feet together, firmly planted on the grou
12、nd, and knees slightly bent. 8.38.5.4.2 While wearing specimen gloves, the test subject shall grasp the pole with the bottom of the bottom hand at a height equal to the height of the subject. The stand shall be adjusted such that the cushioned bar is touching the test subjects chest. The stand shall
13、 prevent the test subjects forward movement during the pull. 8.38.5.4.3 The hands shall be stacked on each other and the thumbs shall not overlap the fingers. test subject shall stand in a comfortable pulling position with the arms bent at an angle of approximately 90 degrees and, in any case, the a
14、rms shall not be completely extended or touching the body. 8.38.5.4.4 The body shall be distanced from the pole so that the forearms are approaching vertical and in plane with the pole. test subject shall grasp the pulling device with hands next to each other. Thumbs shall not overlap the fingers. 8
15、.38.5.4.5 The elbows shall be shoulder width apart, rotated neither fully in (arms parallel to the pole) nor fully out (arms perpendicular to the pole). test subject shall pull the rope or pole with as much pulling force as possible in a smooth, steady, swift, and non-jerking action. The test subjec
16、t shall not bend the knees further or pull down with body weight during the pull. 8.38.5.4.6 The test subject shall continuously pull on the pulling device for a minimum of 5 seconds, +1/0 seconds. The test subject shall continue to pull until the test facilitator observes a peak pulling force and i
17、nstructs the test subject to end the pull. 8.38.5.5 The test subject shall pull the pole with as much pulling force as possible in a smooth, steady, swift, and non-jerking action for 5 +1/-0 seconds. The test subject shall minimize forward or backward movement during the pull as much as possible. Th
18、e test subject shall not bend the knees or pull down with body weight during the pull. The test subject shall continue to pull until the test facilitator instructs the test subject to end the pull at 5 +1/-0 seconds. 8.38.5.6 The test subject shall repeat the pull described above for a total of thre
19、e pulls. 8.38.6.1 The peak pull force value for each individual pull shall be recorded and reported. Any drop in force of greater than 30% in any 0.2-second interval, as measured in the graphical plot of force-vs-time, shall be recorded and reported. 8.38.6.2 The minimum pull force value occurring a
20、fter the peak pull force value shall be recorded and reported. 8.38.6.3 The percentage drop between the peak pull force value and the minimum pull force value shall be calculated, recorded, and reported. 8.38.7.1 The individual percentage drop between the peak pull force value and the minimum pull f
21、orce value shall be used to determine pass or fail performance. Any drop in force of greater than 30% in any 0.2-second interval shall constitute failing performance. Issue Date: August 1, 2013 Effective Date: August 20, 2013 (Note: For further information on NFPA Codes and Standards, please see http:/www.nfpa.org/docinfolist) Copyright 2013 All Rights Reserved NATIONAL FIRE PROTECTION ASSOCIATION
