Document pmoRGzEGVJZ4kmMboRm4ynYXD

ESSO STANDARD OIL COMPANY BATON ROUGE REFINERY Mechanical Technical Service Department YKSDLATIOH STOP! This study covers a comparison of four Insulations for hot service piping. The products considered were: Careytemp carlo Thenaobestos Uniteetos Philip Carey Manufacturing Company Owene-Corning Piberglae Corporation Johns-Haavilla Union Asbestos & Rubber Company This study is divided Into two parts. Part I consists of published physical properties. Part Q consists of tests and observations made in the MTS Laboratory and out in the Refinery. These tests did not follow any set standards for testing but all materials were given equal treatments under similar conditions for com parison purposes. PART I - Published Physical Properties Physical Property Careytemo Thenaobestos Caylo Uuibestos Transverse Strength 70 lbs/sq in 95 lbs/sq in 50 lbs/sq in 120 lbs/eq in Temperature Range 1600* 1200* 1200* 1200* Compressive Strength 65 lbs/sq in 1* def. 165 lbs/sq in 150 lbs/sq in 1600 lbs/sq ft 52 dsf. 52 def. 52 def. Linear Shrinkage 0.72 9 1200* 1.22 9 1500* 1.52 9 1200* 1.42 9 1200* 0.0572 * 1200* 0.012 750* Density 9 Ibs/cu ft 11 lbs/cu ft 11 lbs/cu ft 18 Ibs/eu ft Moisture Resistance 0.22 In 24 hrs Not shown 902 RH 0.92 in 6 hrs 1.012 in 24 hrs 9 902 RH 0 902 RH Water Resistance 0.82 pickup insasrsed for 2 hrs Thermal Conductivity: 100*F 0.33 200*P 0.37 300*F 0.42 A00*F 0.46 500*F 0.51 600*F 0.56 700'F 0.61 - 0.33 0.37 0.41 0.46 0.50 0.55 0.60 - 0.33 0.37 0.41 0.46 0.50 0.55 0.61 -- 0.36* 0.42 0.47 0.52 0.57 0.62 0.67 * Pittsburgh Testing Laboratory of Chicago conducted a test on Unibeetos in July* 1958* This test indicated the thermal conductivity to be 0.331 at 323*? and a 5-hour testing period. E FO 03 842 An r PART U - Laboratory and FlaId Teste & Observations A. Water Resistance 1. Submerged, In xater 4-1/2 hrs Careyteap Themobeetoa laylo Dnibestos Water Absorbed * by wt > fay Toi 44 7.4 527 75.4 414 72.8 355 73.6 B. Moisture Resistance X. Oven dried then exposed to moisture for 70 hours. (Over 90$ BH) Careyteap Themobestos Kaylo Dnibestos 2.77 14.50 4.28 8.94 0.40 2.56 0.76 2.58 C. Chemical Resistance X. The reactions with Amaoniun Hydroxide, 12% sulphuric acid, and Oxalicacid were about the same; a. Careytemp would not absorb any of these and there was no noticeable reactions. b. Thermobestos and Kaylo formed a soft mud-like substance on the surface, e. Dnibestos absorbed the liquids but no reactions were evident. 2. When tested with Benzol and HEK, the reactions were the same as in "1" above except that Careytemp will readily absorb these less viscous liquids. D. Firs Resistance 1. When exposed to open flams, none of these insulations would burn. The heat and/or flame did cause tha following: a. Careyteap turns black, the fibers get weak, and the insulation becomes more brittle. b. Thermobeetos --- email cracks form and the insulation becomes softer and easier to crumble. c. Kaylo turns blue-gray then gray; many small cracks form and the insula tion becomes harder and easier to crumble. d. Dnibestos -- the outside coating turns whits and small cracks form; the rest of the insulation turns black and gets hard. E. Heat Resistance X. Heated to 1200*F a. All insulations are still usable with only alight changes in color and strength. 2. Heated to 1400*F a. Careytemp turns dark gray, tha fibers loss their strength and become weaker. However, no shrinkage cavities appear and the insulation is still usable. b. Thermobeetos turns pink, cracks throughout and becomes very weak. e. Kaylo turns light pink, becomes weak and brittle. K&ny cracks and cavities appear on the ends as it shrinks up badly, d. Dnibestos turns brown, gets harder and a little brittle, holds fora well with no cracks or shrinkage cavities, and is still a usable insulation. EM003843 00.6 3 F. Shock Real*tone* 1. Each insulation was hanaar tested. a. Caraytemp cracked excessively, alooit to the point of shattering. b. Thermobestos absorbed the shock fairly wall with little indentation but several small cracks appeared. e. Kaylo reacted similar to thermobestos but cracked a little Bore, d. Onibestos was dented in the outside coating only where the hammer made contact. Bo cracks formed. The shock was absorbed vary well. G. Abrasion Bssistancs 1. When exposed to a rubbing action, the following effects were noticed: a. Careytemp is easily rubbed down into a powder. It would not stand excessive vibration. b. Thermobestos and Kaylo resist abrasion quite well* Does not rub down too easily. c. Onlbestos resists abrasion best of all, would outlast the others. H. Field Handling 1. This takes into consideration the handling of the materials from the time they arrive until they are installed. a. Careytemp has a tendency to crack and chip off at the edges in transport ing the material to its final location. Xo small site material was avail* able for testing but the amount of waste materiel would probably be higher in the smaller sixes. Careytemp can be cut and shaped to exact dimenaiom but care must be exercised to keep from damaging the trimmed edges. The wire used to tie the insulation in place often cuts into the material. b. Thermobestos holds up well with some breakage in the smaller sizes. It can be out and shaped fairly easily. The tie vires have no ill effects. c. Kaylo breaks quite easily in handling and often cracks while being cut. The tie wires will cut into Kaylo when drawn tight. d. Unibestos can be handled the roughest with the least breakage. Its grain-like structure absorbs shock rather than cracking or crumbling. It can be cut and shaped fairly easily and the tie wires have no ill effects. 2. Careytemp, Thermobestos, and Kaylo arrive with cloth jackets which have to be removed before installation. Unibestos is tied with atring which saves some time in preparing the material for installation. 1. Careytemp is ligheat in weight and has a higher temperature range of 1600*P. It is highly resistant to water and most chemicals but cannot absorb shock or take rough handling. 2. Thermobestos has the greatest compressive strength and good workability. 3. Kaylo had no outstanding quality that surpassed all of the other insulations. & Onibestos has the greatest transverse strength and ability to absorb shock. It can be treated rough with little breakage and be reused often. It is resistant to most chemicals and the linear shrinkage is lower than that of the other insu lations. This material weighs acre than the others. EM003844 nn : v 45. AH of the meteriels hare good thermal conductivity ratings and all are highly Tire resistant. Recoapsnd&tlons 1* Based on this study, the following rec emendations are made: a* That Unibestos and Thenaobestos be used as our hot pipe insulations because they display the most desirable qualities and would undoubtibly prove to be sore economical than the others because of less waste due to breakage. b. That Careytemp and Kaylo be considered as suitable substitutes tdien situ ations warrant the use of products other than Unibestos or Theraobestos. ^ilSBaranskisECW September 14, 1959 E MO 03 84 5 0013