Document o9D9Myx98vRdkpb5w2j1ZzrBR

ITEM PAGE 1. GENERAL ............................. ....................... 1.1 Intent................. .... 1.2 OSHA COMPLIANCE . . ......... 1.3 Scope....................................................... 1.4 Line List..................... '.......................... 1*5 Equipment List ....................................... l*6 Special Requirements .......................... 2 2 2 :: . 2 2 2 2 2. PIPING ............................................................... 2.1 Material................................................. 2.2 Securement............................................... 2.3 Weatherproofing....................................... 2.4 Fittings....................................................... 2.5 Details. . :........................................... 2.6 Hangers & Supports.............................. - 2.7 Single Layer............................................ 2.8 Double Layer........................................... 2.9 Supports ...................................... . 3 3 3 3 3 3 3 3 3 3_ ____ 3. EQUIPMENT................................................... 3.1 Material ..*.......................................... 3.2 Securement............................................ 3.3 Weatherproofing.................................... 3.4 Details................................................... 3.5 Irregular Surfaces.................................. 4 4 4 4 4 4 TABLE I, THICKNESS.................................. 5 . FIGURE 1 through 4 (Piping).............................. 6-9 FIGURE 5 through 12 (Equipment)...................... 10-17 E-00493 ETC 15478 1 r>M /* GENERAL 1.1 Intent. The intent of this specification Is (1) to define the moteriols to be used for insulation of vessels, equipment, end piping in hot service, end (2) to define certoin detoils of insulation application. The purpose of this Insulation Is to conserve heat (H) and/or to protect personnel (P). Any specific detotls not covered herein shall be in accordance with best area practice. _ ... ____ 1.2 OSHA COMPLIANCE. All design and construction done in the United States under ti specification shall be in strict compliance with the Williams-Steigor Occupational Soft & Health Act of 1970 (84 Stot. 1593, 1600; 29 U.S.C. 655, 657) os revised. ^ 1*3 Scope. This specification covers the design and application of heat insulation systems for piping and equipment (vessels, columns, pumps, etc). It Is intended to serve as a basis for contractor's bidding and performance. It is also intended to serve as a basic engineering guide to standardize and simplify the solution of recurring insulation problems. 1.4 Line List. A sepvate document, the LINE UST Indicates the pipe lines to be insulated in accordance with this specification. Insulation thickness will also be specified in the LINE UST. __ 15< Equipment List. A separate document, the EQUIPMENT LISTV Indicates the equipment to be insulated in accordance with this specification. The insulation thickness will also be specified in the EQUIPMENT LIST. 1,6 Special Requirements a. Lower Limit. Surfaces normally operating at less then 200 P shall not be heat insulated unleu specifically required for personnel protection or special process reasons. b. Personnel Protection. Personnal protection insulation shall be applied to piping and equipment operating above 150 F which may be accidentally touched by personnel. Such hot surfaces shall be insulated- to a height of 7* above or 3' to each side of normal walking or working areas (including platforms and ladders). Personnel pro* tection insulation shall not be continued beyond normal working areas. Alternatively, guards of expanded metol may be used if specified by Ethyl. c. Valves, Flanges, & Fittings. Valves, flanges, and fittings, except unions, in steam and boiler feed water service shall be insulated. Valves, flanges, and flanged fittings In* other services shod not be insulated except where required for personnel protection or special process reasons. Welded and screwed fittings, except unions,' in insulated lines shall be insulatedj expansion joints shall not be insulated. d. Steam Traps. Steam traps shall not be insulated except for personnel protection. Inlet piping to steam traps shall be insulated. Discharge piping which returns to a condensate collection system shall be insulated. Piping which discharges to a drain shod not be insulated except roe personnel protection. e. Steom Tracing. Stecsn traced piping or equipment sholl be covered with oversized insulation to include the tracer lines. Insulation thickness shall be selected from Table I. Steam traced systems shad be completely insuloted including equipment, volves, flanges, fittings, and tracer line loops. f. Hydro Test. All equipment sholl be pressure tested before the application of insulation. 9* Nameplates. Nameplates sholl not be insulated. Insulation surrounding vessel r E--00494 ETC 15479 wUFAJiTKBNT 2. PIPING 1 tW I <> ^* WIM r Apr 74 2.1 Material. Piping to 1200F shall be insulated with calcium silicate, mineral fiber, or expanded perlite; all products shall be asbestos free. Acceptable materials ares Calsilite, Calsilite 1200 i Celotex, Careytemp 1500 Johns Manvilje, Thermo 12. Eagle Picher, Epitherm 1200 Keene, Thermosil Forty Eight, MF Owens Coming;- Kaylo 10 Holmes, Unisite Pabeo, Super Caltemp NA. Other materials may be used with Ethyl Corporation approval. In periods of material . shortage, piping to 4P0F may_be insulated with Pittsburgh Coming Foomglcs. Insulation thickness shaii be as specified in the Line List; Insulation thickness for piping not shown in the Line List shall be per Table 1. * 2.2 Securement. Tie wire shall be 18-8 soft-annealed stainless steel. 16 gage for 10N and smaller pipe. 14 gage for 12" and larger pipe. 2.3 Weatherproofing. Insulation shall be weatherproofed with 0.016" thick x 3/16" corrugated aluminum with factory attached moisture barrier. Secure aluminum with i " long x *8 sthls stl sheet metal screws on 9" centers. All laps shall be at least 2" and shall shed water. 2.4 Fittings. Fittings smaller than 2" shall be covered with insulating cement (JM 450 o: approved equal) and weatherproofed with GPM mastic (Ben Foster 35-01 alum grey or approved equal) 1/16" dry film thickness. Fittings 2" and larger .shall be insulated with a material comparable to the adjacent pipe insulation and weatherproofed with GPM mastic (Ben Foster 35-01 alum gray or approved equal) 1/16" dry film thickness. The mastic shall be reinforced with Ben Foster Mast-a-Fab. Preformed aluminum fittii covers may be used if economical and available. . 2.5 Details. Details of piping insulation shall be as shown in names 1 through 4. 2.6 Hangers & Supports. At all pipe hangers and supports, the necessary cutouts shall be carefully made and weatherproofed with heat resistant mastic, Foster 95-10 or approve equal up .to 350F; above 350F use Eagle Picher Stalastie. 2.7 Single Layer Application. For single layer application, the circumferential joints shat1 be staggered and the longitudinal joint shall be on the underside of horizontal runs. 2.8 Double Layer Application. For double layer application, the inner layer shall be applied as the single layer in the preceding paragraph. The outer layer shall be applied with the joints staggered longitudinally and circumferentially with respect to the inner layer. Each layer shall be secured as shown for o single layer. 2.9 Supports. Insulation on vertical fines shall be supported by ring flanges welded to the pipe. Supports shall be supplied by the Insulation Contractor or as directed by the Ethy Engineer. Ring OD shall be V 1** than insulation OD. Start at bottom of line and install ring flanges at 21* intervals as needed. Allow for bolt removal at pipe flanges. See Fig.2. > E-00495 ETC 15480 wJSPANTMBKT *3. EQUIPMENT C Iiui IlNiUWMIUl'l K Apr 74 3.1 Moterial a. Small Cylindrical. ' Equipment to 1200F and 24" and less in diameter shall be insulated with calcium silicate, mineral fiber, or expanded perlite pipe covering all products shall be asbestos free. Acceptable materials are " "Calsilite, Calsilite 1200 Celotex, Careytemp 1500 ' Eagle Pleher, Epitherm 1200 Forty Eight, MF Holmes, Unisite Johns'Manville, Thermo 12 Keene, Thermos!i Owens Coming, Kaylo 10 Pabco, Super Caltemp.NA. Other materials may be used with Ethyl Corporation approval. In periods of mat erial shortage, equipment to 400F may be insulated with Pittsburg Coming Foam; b. targe Cylindrical. Equipment to 1200F and larger than 24" In diameter shall be insulated with curved block or beveled tags of the type and brand name specific in Par* a above. c. Fiat. Flat surfaces to 1200F shall be insulated with flat block of the type and brand name specified In Par. a above. d. Thickness. Insulation thickness shall be as specified In the Equipment List. Insul tion thickness for equipment not shown in the Equipment List shall be per Table 3.2 Securement. Bands for equipment insulation shall be 3" * 0.020" 18**fi stainless steel with 18-8 stainless steel seals, A. J. Gerrard or equal. 12" on centers. 3.3 Weatherproofing a. Vertical Jacket. Vertical straight shells shall be weatherproofed with 0;016" thick x 1^" corrugated aluminum with factory attached moisture barrier. b. Horizontal Jacket. Horizontal straight shells shall be weatherproofed with O.Old thick smooth aluminum with factory attached moisture barrier. e. ` Vertical Seams. Vertical seams in aluminum jacketing shall be secured with $ " long x ^8 stnls stl sheet metal screws on 6" centers. d. Circumferential Seams. Circumferential seams in aluminum jacketing shall be . secured with a j" x 0.020" 18*8 stainless steel band at each seam. Continue to apply bands circumferentially on 18" centers. e. Z Clips. Z support clips made from 3" x 0.020" stainless steel band shall be installed at the circumferential seams on 18" centers on vertical vessels. f. Projections. At dll projections (nozzles, brackets, etc) the necessary cutouts \ shall be carefully made and weatherproofed with heat resistant mastic, Foster 95*1 or approved equal.up to 350F; above 350F use Eagle Picher S to lastic. g. Heads. Heads shall be weatherproofed as detailed in Fig. 6. Alternatively, if economical, available, and approved by Ethyl, a formed cover of 0.020" thick smooth aluminum with factory attached moisture barrier may be used. ' 3.4 Details. Details of equipment insulation shall be as shown in Figures 5 through 12. 3.5 Irregular Surfaces. Pumps, turbines, and other irregular surfaces shall be insulated ond weatherproofed the same as vessel heads. r E-00496 ETC 15481