Document e5EMLy8p7oqV8kKBdovBNorrM

*-10 !<C VjrJ*/0 Monsanto fiOM tNAMtf 1 iOCATlON) B. J. Sanders - Texas City (3R-16) August 31, 1984 Non-asbestos Packing Gaskets cc. TO P. K. Hanson55 Regional Purchasing R. M. Gibbs R. L. Harrmond D. A. Hardin" F. E. Rouse R. V. Sharp55 P 5H*rp Ci. Confirming our telephone conversation of 8/30/84, please review the attached memo from CED concerning use of non-asbestos gaskets and packing. Note the January 1, 1983 target date to stop purchasing asbestos-containing gaskets. Dorothy Hardin and I are gathering information from various suppliers to determine availability, cost, chemical resistance, etc. of non-asbestos products. If you have any more comments please let us know. We will keep you posted on our findings. / sm "Attachments B. J. Sanders c 000425 r LAM022334 Irom: Donald R. Frikken CS7H Corporate Engineering (4-6744) Date: August 20, 1984 Use of Asbestos in Piping Systems cc Charlie Petit - CS7H Tom Pryor - CS7H Dave Allman Gene Anthony Larry Baer Dave Barrett Paul Bernache Jim Blankenship A. D. Book Jim Borgmeyer Len Bornemann Bruce Bradley Paul Brewer George Butler M. R. Bynum Bob Carlton Mike Combs Mac Feld Gene Forneris Barry Hauf Dave George Lee James Joe Jeter Tom Jordan 1720 - CS7E - CS6M - CS7H - CS7V - CS6B - 1560 - CS7V - 1440 - CS6M - 1740 - 1200 - 1760 - CS7D - 1690 - CS6G - 1740 - CS6B - CS70 - CS6M - 1760 - 1870 Andy Larson Walter Leong Tom Martin Lynn Meenen Charlie Pannett Joe Purvis Wendy Purvis Rich Quinlisk Rich Ramsey Doug Rogel Glenn Ross Jack Roubidoux Dennis Sagez B. J. Sanders Buddy Satterly Mark Schoedel Gene Stecher Gus Theodore Ralph Tisher Al Tung Don White Bill Womack CS7E - 1760 - CS6G - CS6M - CS6D - CS7V - F4WB - CS6B - CS6G - 1900 - 1780 - CS6M - CS70 - 1890 - CS7E - CV - CS70 - CS6B - CS70 - CS2B - 1560 - 1850 For those of you who haven't seen it, I have attached a copy of Monsanto's policy on the use of asbestos. As you probably know, most of the asbestos we use in new facilities is in piping systems. I developed a proposal for implementation of this policy on CED projects as shown below. The proposal was approved this morning. PLAN FOR ELIMINATING ASBESTOS IN NEW PIPING SYSTEMS Line Gaskets 1. Revise piping system masterspecs (PSM's). (I revised the electronic version this morning. Any PSS1s developed using the automated system will not have asbestos containing gaskets.) 2. Revise piping system specifications (PSS's) for current projects before January. 3. Stop purchasing gasketing which contains asbestos on January 1, 1985, even if the requisition specifies asbestos. c 000426 i LAM022335 Coated and Wrapped Pipe 1. Revise piping system masterspecs (PSM's). (I revised the electronic version this morning. Any PSS's developed using the automated system will not have coated and wrapped pipe.) 2. Revise piping system specifications (PSS's) for current projects before January. 3. Stop purchasing coated and wrapped pipe on January 1, 1985. Valves 1. Revise valve specifications before December, 1985. 2. Stop purchasing valves which contain asbestos on January 1, 1986, even if the requisition specifies otherwise. RECOMMENDED ALTERNATES TO ASBESTOS There is no universal substitute for asbestos. There are generally three materials which have been demonstrated to be suitable: * Asbestos substitutes * Reinforced PTFE * Flexible Graphite For line gaskets, the primary alternates are compressed non-asbestos sheet, reinforced PTFE and reinforced flexible graphite (vendor information attached). For utilities such as air, water, inert^gas and steam, I recommend using Garlock Blue-Gard style 3400. Unless this, or another asbestos substitute has been demonstrated to be suitable in a chemical service, I recommend using the reinforced PTFE for temperatures below 400 F. For temperatures from 400 F to 500 F, flexible graphite should be used in chemical service. Flexible graphite filled spiralwound gaskets should be substituted for asbestos filled spiralwound gaskets. I cannot recommend PTFE filled spiralwound gaskets because of reported leakage at moderate temperatures, presumably caused by creep. I understand the industry is gaining favor for reinforced PTFE filled spiralwound gaskets, but I know of no Monsanto experience with this gasket. For coated and wrapped ipe, the primary alternates are extruded pol yethylene coating a coal tar epoxy coating (Kl.3 STD U2) . The primary a 1 ternates gas kets. The primary alternates for valve packing are asbestos sub stifcutes, PTFE and flexible graphite. For specific applicati ons, I recommend consulting with your friendly Mat erials Eng ineer . Don Frikken C 000427 f r- f LAM022336 MONSANTO'S POLICY ON ASBESTOS I. Policy Statement Monsanto's social responsibility policy states that we will provide a safe and healthful workplace for our employes. To support this policy we will ensure that appropriate safety procedures and health considerations are incorporated into the design of all new Monsanto facilities and we will train employes in the safe operat ing practices and require the use of proper protective devices. To support this policy a program for the identification and elimination of asbestos materials within our workplaces will be developed. II. Scope To implement the policy regarding the identification and elimination of asbestos materials we will: 1. Revise the specifications in the CED piping standards to eliminate asbestos gaskets. Situations in which non-asbestos gaskets will not meet the specific requirements will be handled by the operating company and CED on an exception basis. 2. Specify non-asbestos materials for valve packing and other speciality applications. This will require a transition period to inform all of our suppliers well ahead of time that we will no longer accept materials obtaining asbestos, to evaluate the cost and performance of alternatives for asbestos, and to change the Monsanto specifications. Situations in which non-asbestos materials will not meet the specific requirements will be handled by the operating company and CED on an exception basis. The target date for completion is December 31, 1985. 3. Replace asbestos in existing facilities with non-asbestos materials when repair, replacement, modification projects or executed. Situations in which non-asbestos materials will not meet the specific requirements will be handled by the operat ing company and CED on an exception basis. It. Manage in a manner to assure proper protection of personnel those situations in which asbestos remains by: a) providing workplace guidelines that reflect the state of technology today and that comply with all governmental regulations on handling, working with, and disposal of asbestos. G 000428 LAM022337 2- - b) Maintaining a "state-of-the-art" awareness of the evolution of potential asbestos substitutes and of the evolution of technology, industry practices, and governmental regulations on handling, working with, and disposal of asbestos. c) Periodically reviewing and evaluating those sit uations in which asbestos is still used. July 19, 1984 C 000429 rr * f LAM022338 Description and design data "Grafoil" metal-inserted gaskets consist of "Grafoil" graphite sheetst mechanically bonded to type 316 stainless steel sheet(s). Depending on the thickness of the gasket required, multiple layers of "Grafoil" graphite and stainless steel are used. This composite construction provides a stronger gasket and in no way affects the excellent corrosion-resist ance and high-temperature properties of the graphite component since "Grafoil" graphite is devoid of fillers or resins. The metal-inserted gaskets are available for pipe sizes from 1/2 to 20 inches, in thicknesses of 1/32 arid 1/16 inches for 150,300,600,900 and 1500 pound steel, cast iron or equally hard flanges.* The gaskets are self-centering when positioned by the flange bolts. Temperature extremes have no adverse effects on "Grafoil" gaskets; dependable performance is assured from 1600'F in neutral or reducing atmospheres, down to -400F. No cold flow characteristics are exhibited and there is no embrittlement of the "Grafoil" material. Although "Grafoil" metal-inserted gaskets will not vulcanize or bond to flange surfaces, "Grafoil" graphite particles may adhere in spots to the flange faces. Parting the flangfes, however, poses no problem since the laminar construction of the gasket facilitates a clean breakaway. Any residue is readily removed with a wire brush or metal wool. This catalog is designed to help select appro* ; priate gaskets for your application. Our Tech nical Service Department will be glad to d|Sk ; cuss your particular application and make recommendations. TYPICAL PROPERTIES "GRAFOIL" METAL-INSERTED GASKETS ***- - c ^7* *. |Xiiy ^Thermal Con<fcctiYiry atTfl_opm;remperatu M3SeWa3mC/5T-;j|>|lf ^ -.sr ri.V5'4.6x10^;,5i'; ::*?',{4.6.x icr*T- - Ohm-Meter) Because the teeth of the tang metal core will indent me Lais softer than 316 is.. Grade GH gaskets are not normally recom mended lor use with bronze, aluminum or similar flanges. * *The fluid temperature mav considerably exceed 8S0* F providing that the bulk temperature of the "Grsfoif*' gasket is 550*^ or beiow or that the fluid being handled ooec no: come into direct contact with the graphite. Example: a meta! spiral-wound casxei with a "Grafoi!" fille' mate-ial. tU.S Paten: No. 3.404,061 C 000^33. F f ~ LAM022340 Gasket loading vs. leakage pressures The prime requirement for satisfactory sealing water pressure. The Net Unit Load is that force with "Grafoil" metal-inserted gaskets is suffi still exerted on the gasket surface after all the cient unit load on the gasket at all times in one forces which tend to relieve the initial unit load continuous path around the gasket. are subtracted. One such opposing force is the If surfaces are maintained flat within 0.005 "piston" action of the sealed pressure on the inches, and are held to a surface finish of 125 area within the gasket I.D. Others are: bolt RMS or better, "Grafoil" gaskets will seal stretch, piping stress, and differential thermal hydrostatic pressures as shown on the graph expansion. The initial load on "Grafoil" r above, "Leak Pressure vs. Gasket Unit Load for gaskets must be enough to end up, under 'Grafoil' Gaskets." A Net Load of 7,000 psi of operating conditions, at or above the Net Unit dotted line example will seal up 3,150 psi Load indicated on the graph. f C? 000432 LAM022341 GRAFOIL" METAL-INSERTED GASKETS PIPE-SIZE GASKET* DIMENSIONS * Normally available from stock. HOW TO INSTALL HOW TO ORDER CUSTOM SIZES Remove all projecting particles, scale, and burr* ) flange faces. Small subsurface defects will cause no trout O Part flanges enough to slide gasket in place, using a few bolts for positioning. Temporary spaces may be advisable. O Handle the "Grafoil" gasket with reasonable care to avoid v'* tearing, scratching or bunging. A Insert rest of bolts. Draw flanges together evenly. Tighten *"* all nuts hand tight. Increase bolt loading in usual manner until required bolt load is obtained. See separate Catalog Section** for pricing and standard packaging. On order, specify size, quantity, catalog number and price. Gaskets with dimensions varying from those shown in the table, can be supplied upon request -- please furnish sketch and dimensional data. GRAFOIL it * registered trede mark of Union Carbide Corporation. EXPORT: CANAOA: UNION CARBIDE CORPORATION CARBON PRODUCTS DIVISION SALES OFFICE: 120 SOUTH RIVERSIDE PLA2A, CHICAGO, ILLINOIS 60606 TELEPHONE: (312) 454-2000 CARBON PRODUCTS DIVISION. EXPORT SALES OFFICE. 270 PARK AVE.. NEW YORK. N. Y. 1001J UNION CARBIDE CANAOA LIMITED 123 EGLINTON avenue EAST. TORONTO. CANAOA MAP 1J3 ; Cf 000433 LAM0 a'..? 342  REQUISITION HEADER REVREGU REQUS120 12/19/84 12:04:32 (INTERS FOR HOI LIST <F9> REQUISITION LIST REG NO-' 0033951 REOSTR: G.L. BRAGG X- 4351 ENTERED: 12 19 84 DATE REO: \2 19 84 BUYER CDEi LR JOB/PROJ NO: EirDT PRTY: 01 S/R REG: N STATUS: 10 APP Aiith: R.S. INGERSOLL CHANGED &*: GLBRAG OTHER INE.TR: TEST REQUISITION DO NOT ORDER. BRAGG DEL INFO: DEPT: STORES NOTIFY: BRAGG RECPT INST SUGGESTED VN[F': NAME: BLDG: DOCK: ADDR: PHONE: TTt* E>: REVREC/J RETU'Oiy EEC 1.I Nl N! key line w: OENTER. FuF. ITET DETAIL CP?. HEADER CF53 CCST DIST, <F7> P.G. REVIEW CF^rREQUiSITION US1 RED NO: 000? REOSTR: G.L. BRAGG X- 4351 ENTERED: 12/19/84 P LN MCE NO QTY UNIT PRICE C I/P REQD VENDOR QUITE STAT H( HHHHJ H HHHHimtt HI HHHH HHHH WWH **** 01 150002 213 EACH 1.0000 K N 12 19 34 BAYSUPPL . PEND ------------------- I-!/?1 TTRBT-WJUWJ GflSKt:!, 31*8 S/ASH. 1501, I/i?"' THK, API 03 150002 04 15000- TM FflrH ^00 UK _N 12 19 34 BAYSUPPL ,-iWUNO GASKET, 316 SS/ ASB. 150#, 1/8" THK, 278 EACH r" spikht-tow .8900 K wbkki, N ju. w12 m19 8i4 {BbAYoSUnPPnL/^"w,npi' PFND Eli EACH 3.8800 K N 1? 19 S4 RAYS1IPP1 _____ ___ PFNT1 XV7 774 10" SPIRAL-WOUND GASKET, 316SS /ASB, 150*. 1/8" THK. API 05 150010 181 EACH 6.5800 K N 1? 19 84 BAYSUPPL PEND /OSt, ---------------------- 12" bviMLTOiLi wm mrm iboi, w thet/pt 06 150011 10: EACH 7.3200 K N 12 19 84 BAYSJPQ.EEfflL 731 --------------------------- 14' SPIRAL-MIND GASKET, 314 5 S/ASB. 150*. 1/8" THK. API 5L ** HOPS ITEM'S ON NEXT PAGE * ITEM LIST m REVREOU REP'J'rIOT, .y-.' yrr-,r: 12.;l;.'c4 12:04:5 '"pp; reogisition lis' tW 2 VI /il XV? - v . 07 i50':: 0! IfOCIi : , : . :C.v> v v s v L vi> . i v ? s- Z-r 14; EA'>: 10.4301? K. N 12 19 84 BAYSUPPL PEND rfi,"SPIlL-TBMr!jB5l`:ET,,"'!?!iS /ASS. i5M, 1/SP THkr'AP'!' 55 EACH 13.2400 K N 12 19 3* BAYSLWi PFND /V?o ns% 09 150199 l?" SPIRAL-WOUND GASKET, 316SS /ASB. 150#, 1/8" THK, API 73 EACH 1.4100 K N 12 19 84 BAYSlIPPi PFND /63 C 10150004 -12 150014 2-1/2" SPIRAL-MOUND 150# CASK ET, 316SS/ASB. 1/8" THK. API 188 EACH l.QZOO K N 12 19 84 BAYSUPPL PFND 2^ SPTffiVT-TJBXIC G&SkeT. 314 SS /ASB. 150#, 1/8" THK. API 95 EACH 13.2500 K N 1? 19 84 BAYSUPPL - PEND /2S7 C 12 150015 20" SPIRAL-WOUND GASKET, 316SS /ASB. 150#, 1/8" THK. API , 83 EACH 14 8800 K. N 12 19 84 BAYSUPPL PEND me 24ff SPIRAL-HUM! GfiSKET, 316SS ?ASB. ISO#, l/3; THK. API 5L MORE ITEM? ON NEXT PAGE /oi Xe>t r Sc- h. t7Vi i C 000434 V V. r- r LAM022343