Document KGQMx4B04DR7KJYQ5G1jOOR9o

The scheduled'meeting of the T & R Ccmaittee, Mineral Fiber Section, convened at 9:00 in Kev York City at the Sumnitt Hotel with the following persons in attendance: C R. l ms t TM JM W. Gubar - CSG A. Kevlin - CCF L. J. Lash - JK L. . Mills - CSG R. Peterson - OCF ` The agenda items were acted upon as follows: 1. Temperature Licits - W. Gubar Action: Mr. Gubar discussed the work conducted on the All American Vibrator on. various samples conducted at 40*0, 500, and 600 F. temperature. The vibrator cycle used was that described in Coast Guard Specification 32MA3C. The only conclusion * that was made from these is that when the binder is completely removed from the insulation in contact with the hot surface and the product vibrated, the thickness of the insulation is reduced due to the felting action of the'vibration on the unbonded glass fiber. Mr. C. E. Ernst thought that more research should be done to determine the proper vibration cycle. Therefore, the committee concluded that the criteria established at the April 15, 1969 meeting was sufficient to demonstrate the temperature limits of the- product. However, a warning should be incorporated in product literature similar to that shown in the Johns-Manville Flame-Safe Fiber Glass Pipe Insulation brochure as- follows: Note: At temperatures 3bove 400F a limited amount of binder migration nay occur in the insulation near the hot surface of the pipe. This docs not impair the thermal cf fectivcncss^ of Flame-Safe in any way. Vibration in lines covered by short-fibered insulations could cause the fibers to settle, eventually reducing the wall thickness ' with a resulting loss of thermal protection. Mean Temp K 200 r 300 ? A 00 V 500 F 600 ? 700 F 0.45 0.50 0.55 0.60 0.655 0.71 b. Proposed inside diameters of Rigid High Temperature Insulation. W. C. Turner, of Union Carbide, has proposed changes in recom mended inside diameter dimensions of rigid molded'pipe insul ation to accommodate thermal expansion that occurs on iron pipe at 1200? and to prevent opening up of longitudinal and butt joints in the insulation at these temperatures. It was the committee concensus chat, in view of the wide variances in iron pipe dimension (from full plus to full minus tolerance within a length of pipe), and the relatively few applications which involve 1200? operating temperatures, there should be no major revision to recommended dimensions. Under severe operating conditions such as these, use of an ex pansion joint construction for longitudinal and butt joints was considered a possibility. c. ' Special Committee on Potential Health Hazards of Thermal Insulation. J. Barnhart summarized activities in this area relating to the A5TM Ad Hoc Committee on Potential Health Hazards of Thermal Insulations and the legislative bills pending in California, Kansas and Massachusetts which would prohibit use of any potentially airborn materials on the airstream side of venti lating, heating and cooling systems. Standard Packaging - GSA Recommendations. The Technical Services Branch of GSA, Port Worth, Texas has requested industry-co-operation in standardizing on quantities per carton on pipe insulation furnished under MU.-I-2781. \ Review of KIMA status versus recommended packaging indicates that for most members about 342 of the sizes vs. quantity per carton do not. conform with GSA's recommendation. It was pointed out that NIMA mem ber action t:o standardize on a joint basic would violate anti-trust lawn. i-'i % Pen*'. 3 Ic was agreed that each member company would submit to J. Barnhart, by May 1st, a list of chose sizes of pipe insulation which did conform Co GSA recommendations and chat Mr. Barnhart would collate these individual lists for use in replying to CSA's inquiry from a positive aspect. 3. Other Business a. KH. STD 769 C Naval Ship-Engineering Center has requested HIKA's conmen.es on proposed changes to the above application specification for machinery and piping. The changes proposed \-7ould eliminate the use of asbestos fiber finishing cements, asbestos felts and asbestos fiber pipe insulations on che basis of environ mental hazard studies. The Molded Section of the T6R Com mittee docs not feel qualified to comment to NAVSEC on this subject and suggests that such comment is more properly a matter for consideration by the Health and Safety Committee. b. MARAD Section 75 It was reported `chat Maritime Administration is reviewing Section 75. Any Individual company comments on this pub lication should be submitted to J. Barnhart'with a copy to L. Kills, Government T&R for action by May 1, 1970. \ c. MARAD It was reported that all MARAD Publications are being reviewed with the idea of consolidating and reducing publications. The '.IIKA Government T?. Committee should be made aware of this and offer assistance where possible and also assure practicality ir. the application and materials specifications which result from this consolidation. There being no further business, the meeting was adjourned. Respectfully submitted. JDM/rp / s/ J.D. He Allistcr Chairman, Molded Section