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FOSTER WHEELER PROCESS PLANTS DIVISION INSULATION STANDARD FOR HOT PIPING AND EQUIPMENT ENG STD Jyp^-UUAX fAGE____________6_________ KEVISION_____ IQ_______ pate Dec. 10. j 36h V, APPLICATION A'i'General"' 1. Care shall be taken to insure that all working parts of valves, turbines, or other mechanical equipment are protected when insulation is applied. Until all insulation materials, such as cement or ma:tic have been removed from parts such as valve stems or governor linkages, the performance of insulation work shall be considered incomplete. 2. Small turbines or other equipment having shortradius.__c_ury.ed-------- surfaces may be insulated with insulating cement at for small fittings and valves. * 3. For large irregular surfaces such as large turbine casings, block or blanket insulation material may be used as fcr heads of vessels. However, it is important that the materials used, methods of attachment, and extent of coverage have no effect upon the performance of equipment or the manufacturer!s guarantee. For this reason it is preferred that insulation for large mechanical equipment be furnished complete with weather-proofing by the equip ment vendor except when it is uneconomical or impractical. It. All projections and attachments to insulated pipe, vessels, and other, equipment such as pipe nozzles o: """.inchso, 'hall be insulated at least six inches beyond the pipe or equipment insulation surfaces, unless this requirement is exempt under Paragraph II, c. of this standard or is superseded by specific job requirements. 5. At operating temperatures above 600F differential expansion becomes a significant factor. To prevent opening of the joints and excessive heat loss two layer staggered joint construction shall be used. 6. Insulation shall be beveled and weatherproofed at all terminal points where it is required to remove bolts, studs, nuts, etc. 7. For straight run portions of pipe and equipment, methods of applica. tion of insulation and weatherproofing shall be as listed on Table MB" and as described in Sections V-B & C. The complete description -- _ .--of the materials specified in Table B shall be ss indicated in Section III of the specification. FOSTER WHEELER PROCESS PLANTS DIVISION INSULATION STANDARD FOR HOT PIPING AND EQUIPMENT TABLE "B" APPLICATION OF INSULATION & ALUMINUM JACKETS ENG STD. 3950-80A1 PAGE___ REVISION.1_> oate____ February PT, 19.^ tco --oi Vo t 3a 5MCcO Size Range Material: Block Blanket ' Size: 0mJ.OnCrlKr Blanket Spacing: Block Blanket -Equip. & Pipe 2li" Dia. & Smaller - - Equip. & Pipe -- Larger Than 2U" to 60" Dia. Equip. Over 60" Dia. Tie Wire (iron) --. Bard St Seal 'SS) Band Sc Seal (SS) Weld Pins & Clips Weld Pins & Clijs ' jrxo _ga--\Ou ot smaller) #lU ga (10" to 2U" -- ix/trc%rfxi Tw.rriaae^ #12 ga. 4 3/4 wide: ..... .V #12 ga. 9" 9" 9" 12" x 16" C-C 1?" x 16" C-C Thickness 0.010" 0.016" 0.016" /-Ni ' H li) H .24 H<Pc Corrugations: Pipe(all sizes) Horiz. Equip. Vert. Equip. Seam Overlap (a) Longitudinal Circumferential Smooth Smooth Smooth 2" 2" -- 3/16" 1-l/U" 2" 2" -- 3/16" 1-1/U" 2-V2" 3" (horiz. equip.) U* (<'ert. Equip.) -p A3 to TJ 5 cH EC Material Size Spacing (b) Seam Securement Bar.d & Seal (SS) 1/2" Wide l?-: -- Band & Seal (SS) 3/U Wide _d" Alum. Screws 6" C-C (c) Band St Seal (SS) 3/U" Wide 18" Alum. Screws 6 C-C (a) ' (b) (c) (d) (e) %' All seams shall be arranged to shed water. As a minimum, provide one band at-each circumferential seam and one band in the middle of each course, one edge of the band shall coincide with the seam. For vertical equipment over 60" dia., "Z" clips shall be added on circumferen tial Joints on 2U" maximum centers and bands shall be tightened with a ratchet tool. Smooth aluminum Jacketing shall be used for the top heads of vertical vessels. Heads of horizontal vessels and the bottom heads of vertical vessels unprotect ed by a skirt shall be weatherproofed with mastic per Section V-'. All openings through insulation finish shall be flashed weather tight. . FOSTER ^jj. wheeler PROCESS PLANTS DIVISION IH501ATIOK, STANDARD FOR HOT PIPING AND EQUIPMENT tWO STD. 3950-80A1 PAGE___ tVBIOW____. -8 T pah December LQ 196h ,V. . APPLICATION (cont,'J) __ ____ !1-.... ______________ ......................... --------- B. .-Piping, Vessels. & Cylindrical Equipment. 21;11 O.D. and Smaller Insulation 1. It shall be the insulation contractor's responsibility to insure that the outside surface of all piping is to be dry and reasonably clean prior to the application of the insulation. 2. Apply half-sections cf insulation material, starting, where possible, with a full length piece and a "half length piece so as to stagger the --^-circumferent-ialr-joints-.-------------------:--------------:--: :--:---------------------------- :-- .4 3. Secure the sections or segments of insulation to the pipe with loops of tie wire. Center to center spacing of the loops shall not exceed nine inches. The ends of the loops are to be twisted together, then imbedded into the surface of the insulation. U. Butt the adjoining sections of insulation materia, 'irmly together and fill any cracks or voids with insulating cement. 5>. When preformed sections are available for pipe elbows, these should be used and applied with tie wire as for pipe insulation. ' 6. Fittings and valves, smaller than 3" size, may be insulated by apply ing insulating cement in layers to the total thickness of the adja cent pipe insulation. The thickness of the individual layers and time allowed for drying shall be in accordance with the manufacturer's recom mendations. 7. Insulation for weld tees or welded branch connections shall be field fabricated from preformed pipe insulation, mitered at the tee joints, and secured in place with tie wire as for pipe insulation. 8. Flanges, valves (where required) and fittings 3M size and larger shall be covered with field fabricated sections of pipe insulation or block of the same material arid thickness. The blocks and segments of insula tion are to be securely wired on the outside to hold the insulation against the metal surfaces. All voids and cracks shall then be filled with insulating cement leaving a smooth outside surface. FOSTER WHEELER PROCESS PLANTS DIVISION INSULATION STANDARD FOR HOT PIPING AND EQUIPMENT two STD 3950-80A1 PAOC______ 9 - __ ttvmow 1 paw February 2$, 1966 A. APPLICATION (cont'd) ,B. Piping (2k11 O.D. and Smaller) ...(cont,d) Weatherproofing 1. Valves and' Fittings a. Apply two (2) coats, each l/8" minimum thickness (when diy) of mastic, to cover insulation on all valves and fittings smaller *. . . than 3" nominal size. Extend the mastic coats beyond the valve ~! or fitting onto-adjacent pipe covering so that alumlnunTjacket-- ing, when installed, will overlap the mastic at leasb 3M. b. For valves and fittings, 3tt size and larger, apply a smooth layer of glass fabric when the first coat of mast-o is still wet. Finish with a second coat of mastic as for s; ler valves and fittings. 2. Straight Pipe a. Straight pipe shall have aluminum jacketing wrapped around with 2" minimum overlap on longitudinal seams. b. A 2" minimum overlap shall also be used on circumferential seams. c. All horizontal seams shall be installed with upper section over lapping the lower one to shed water. d. Vertical seams or circumferential seams on horizontal pipe shall be waterproof, or alternately shall be coated with mastic before assembly. e. Jacketing shall be held in place with metal bands and seals on 12n maximum centers, with a minimum of one band at each circum ferential joint and one band in the middle of each course. f. Joints at pipe tees and branches should be fitted with aluminum __ flashing and made weathertight. g. Where a fitting at the top of a vertical line is weatherproofed with mastic, the mastic shall overlap the aluminum jacket by two (2) inches. Use (and remove) masking tape to effect an even termination*of the m2Stic. FOSTER WHEELER PROCESS PLANTS DIVISION --V. APPLICATION (cont'd) INSULATION .STANDARD F.QlL. HOT PIPING AND EQUIPMENT eng sip 3950-80A1 RAGE10 REVISION.0 " . pate Dec. 10, 19~5k_______ ............. ........... C ; - Vessels and Pipe Larger Than 2U" O.D. & Irregular Surfaces Insulation 1. For vessel heads and cylindrical sections of equipment larger than 2l|" O.D., curved blocks of calcium silicate shall be used as des cribed below. Blanket insulation shall be used where preformed in sulation is not available. . a. To se.cure block insulation to the heads of vertical vessels, attach tie wire-on 12,r15ihxmum-spac: ng to the"3SsulatIdn"rihg angle which is welded at the tangent line by the vessel fabri cator. The other end of each tie wire may then be attached to loose ring made of l/L" steel rod which is centered at the vessel head to hold the ins-'lation block. The blocks a-- to be cut to fit firmlj t getlier and the wires tightened to ho_ the insula tion materiaj. again^o the surface of the vessel. b. For horizontal vessels without an attached ring angle at the tan gent line, a ring angle may be tack welded near the vessel tangent line, or preferable use two loops of 3/8" diameter larger steel wire rope arour.d the vessel near each tangent, drawn tight, and then securely clamped. Before tightening, radial bands or tie wires on 12" centers shall be slipped under the 3/8" diameter ropes. They shall be looped over the inner ropes and under the outer rope. The free end of the radial bands shall be tied to a loose centering ring and drawn up tight once the insulation is in place. c. For the bottom head under skirts of vertical vessels, the tie wire for supporting insulation block may be looped through nuts welded to the surface of the head by the vessel fabricator. d. For cylindrical equipment sections the insulation blocks shall be held against the metal 'surface with l/2" wide stainless steel .bands (or 3/k" wide bands if the diameter is greater than 60") spaced on 9" centers. The blocks are to be firmly butted together. Vertical joints between blocks on vertical vessels and circumferen tial joints on horizontal vessels shall be staggered. Use the ________ floating ring and radial pattern of tie wire as described in V c. 2. a. e. The use of a fibrous adhesive equal to Eagle-Pitcher "Insula-Stic" is approved f6r temporary securem;r.t of block insulation until oermanent attachments are in place. On vessel heads and irregular surfaces where an adhesive cannot be used, the blocks shall be held in place by impaling over #9 gauge weld pins then secured with speed clips. r f, Fill all voids and cracks with insulating- cement FOSTER WHEELER -PROCESS PLANTS DIVISION INSULATION STANDARD FOR HOT PIPING AND EQUIPMENT ENG STD 39$0-80Al PAGE 11____ REVISION________0 date Dec* 10, ~~ V. - APPLICATION (cont'd) C." Vessels (214" O.D. and Irregular) "cont'd) Insulation (cont*d) 2. For blanket insulation the method of application shall be as follows: a. Nuirber 12 gauge, or larger, weld pins shall be attached to the wall of steel equipment by means of a welding gun. b. Pins are normally spaced on 12" x 16" centers to suit a standard* 1 blanket width and length. .4 c. Blankets are then impaled over the pins, pressed firmly against . the metal surfaces, and the speed clips attached. d. Blanket edges shall be butted firmly together, `h-. '.aced with tie wire at 6" intervals. e. Loose mineral wool shall be packed into all void spaces where the blanket has been cut to fit around equipmen! projections such as pipe nozzles. Weatherproofing ( 1. Irregular Surfaces and Vessel Heads a. For the upper surfaces of small irregular equipment such as small turbines, mastic weatherproofing reinforced.with glass fabric shall be used. One coat of mastic shall be applied. The glass fabric shall be embedded in this coat and covered with a second coat of mastic to give a final total thickness of l/h" when dry. b. For heads of horizontal vessels, the bottom heads of vertical ves sels when not protected by a skirt, and irregular bottom or verti- . cal surfaces, poultry netting or wire lath shall be laced and fastened to the insulation support angles and wires. This netting or lath material shall provide support for a succeeding l/V mir mum thick coat of insulating cement and two (2) l/8" coats of ____ ___________ ___________ mastic. Bottom heads of vertical vessels protected by a skirt do not require weatherproofing. c. For blanket insulation the stainless steel poultry netting or metal lath is an integral part of the blanket. Apply a lA" minimun thick coat bf insulating cement and two (2) 1/8" thick coats of mastic. d. Smooth jacketing shall'be used for weatherproofing the top heads of vertical vessels. The jacketing shall be applied directly over the . block or blanket insulation. 0 FOSTER WHEELER PROCESS PLANTS DIVISION INSULATION STANDARD FOR HOT PIPING AND EQUIPMENT eng stp 3950-8QA1 fAGE 12 IEVISION 0______ _ DATE Dec. 10, 1961; V. .APPLICATION (cont'd) C.' Vessels (2ii" O.D. & Irregular ~ cont1 d) Weatherproofing (cont*d) 2. Cylindrical Surfaces a. On -vertical vessels the lower course of aluminum jacketing may be supported from the ring angle on the vessel, using stainless steel angle clips or rings designed to support the weight of the aluminum, sheets._______ ________ ___ ___-__-__ ...............: b. Aluminum shall not contact the steel surfaces of the vessel. c. Longitudinal seams should' overlap as noted in Table "B". d. The aluminum sheets shall be held against the ir.suj.. :ion by means of stainless steel bands drawn tight enoug., n prevent sagging-but allowing for expansion.of the\essel when heated to operating temperatures. A spacing as close as possible to 18" is required with a minimum of one band at each circumferential ' joint, plus one in the middle of each course. e. Succeeding courses of aluminum jacketing on vertical surfaces larger than 60" diameter shall be supported with suitable nZ" clips. f. Circumferential joints should overlap as noted in Table "B". g. All horizontal seams shall have the upper `course overlapping the lower one to shed rain water. h. All longitudinal seams shall be joined together by means of sheet metal screws on 6" maximum centers. j. Mastic weatherproofing on horizontal vessel heads shall over lap the aluminum jacketing at least 6". Ring angle on vertical vessels precludes this construction. --- .. , k,. .All equipment projections, such as pip>e nozzles, shall have tlr jacketing sealed using aluminum flashing cut to fit the pro jection and extending under the jacket at least 3". The seal between flashing and jacket shall be made tight using sheet metal screws and mastic. - -- FOSTER WHEELER PROCESS PLANTS DIVISION INSULATION STANDARD FOR ' HOT PIPING AND EQUIPMENT tm std 3950-80A1 fAoe________13______ uvision_____ 1 pah February 25 7 1966 VI. APPROVED MATERIALS AND MANUFACTURERS DESCRIPTION Calcium Silicate Pipe Covering or Block TRADE NAME CalciumSilicate MANUFACTURER if Philip Carey Co. (Mfg'd. by Keasbey & Mattison Co.) - *` .2 Fiberglas 74 lb. ** Density; 10 lb. Density 3. Blanket Insulation Kaylo Thermobestos Fiberglas TYPES With With Metal Poultry Lath One Mesh, Face & Both Poultry Faces Mesh on Other Owens-Corning Fiberglass Corporation Johns-Manville Owens-Corning Fiberglass Corporation C a. Mineral Wool Blanket 200 201 200 201-A 102 112 Philip Carey Co. Eagle Pitcher Co. J ohns-Manville b. Fiberglass Blanket* HH HL Owens-Corning Fiberglass Corporation * (Fiberglass mater-has 1,000F. temperature limit.) ** 7\ lb. density fiberglass has a temperature limitation of U$0F. 10 lb. density fiberglass has a temperature limitation of 1,000F. TRADE HAI-3 4. Insulating Cement No. U50 Johns-Manville 5>. Mastic ....... Vi-Ac(Vinyl-Acrylic) Insul-Coustic ' SeaIfas Mastic ... ..... ... (Aluminum Grey) Benjamin Foster Co. Note: Mastic shall he provided in a color to match the aluminum jackets on piping anjl equipment 6. Glass Fabric Mast-A-Fab Benjamin Foster Co. ( iD