Document gaXDJ08Q1L8OwxwmEzrXadk1a

I roin : 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 PLAINTIFF'S EXHIBIT 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 - CS 6M - CS7H - CS7V - CS6B - 1560 - CS7V - 1440 - CS6M - 1740 - 1200 - 1760 - CS7D - 1690 - CS6G - 1740 - CS6B - CS 70 - 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 - CS 70 - 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 PSS's developed using the automated system will not have asbestos containing gaskets.) 2. Revise piping s y s tem___sp-C i f i-e-a-L i bits ( 1 s) for cull eirt--pjtoj ects before ropTpur chasing gasketing wh i ch . con ta i n s asbestos on January 1 1985, even if the requisition specifies asbestos. c 000063 LAM021974 Coated and Wrapped Pipe 1. Revise piping system masterspecs (PSM's). (I revised the electronic version this morning. Any PSS1s 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 spiral wound 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 pipe, the primary alternates are extruded polyethylene coating and coal tar epoxy coating (Kl.3 STD U2). The primary alternates for valve gaskets are the same as for line gaskets. The primary alternates for valve packing are asbestos substitutes, PTFE and flexible graphite. For specific applications, I recommend consulting with your friendly Materials Engineer. Don Frikken c 000064 LAM027975 MONSANTO'S POLICY ON ASBESTOS 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 ^rain employes in the safe operat ing practices ana require the use of proper protective devices. To support this policy a program tor the "* 1 2 3 4 identification and elimination of asbestos materials within our workplaces will be developed. 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, 1983. 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. 4. Manage in a manner to assure proper protection of personnel those situations in which asbestos remains by: a) providing workplace guidelines chat reflect the state of technology today and that comply with ail governmental regulations on handling, working with, anc disposal of asbestos. c 000065 LAM021976 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 000066 LAM021977 W'=i^r?^tT~xAf^otT-T--nrDc"nbT^A* 't\'1*4 r^<^rS--iTt^?-i kw VlHr^Pr^-Pr-jlZHJ/FJrRSrAsrTFTBOT?TiLOADSi*A : 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 and 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^ 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" met a I-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 dis cuss your particular application and make recommendations. TYPICAL PROPERTIES "GRAFOIL" METAL-INSERTED G.ASKETS w cy5 ryrvprvertyi InitZSCi' (Metn clays' -_^Maxirrium pperating PressureP1 ffFuncticir,arTempersture.-f'rEi-c*5fir.LLi~.r Y.-v. N eutraLor ft educi ng Atm osphere-^ _ ''^-^OxJidizing^Atrposphere^T^^^-.'^f^^i ~ ~l k n i i\ 1 O ma A .i 11 ...nr C i*". r\Fn rra m r\a r- -- -! 1 IT "tw . _ ' s_-- ; .* * ' _""7 i D,000 ^/ysk. -V> *3*3: 200C;toEs:!>: 87oC) -\S=r- -r^Uso'O'^.TV-i J? Vc~ nrZJ-^'. 3.5 Wa ns/~Tc ? *^17SV,'am/Tr' zj.'YMrter-?CJ -.Tj Radially", ?'/:3 V-fAeVlCT4'"' "J - Ohm-Meter) * Because Ttte teeth of iKe tang metal core will noen; metals so*:e" tnar 216 ii G'dOf GhE cas* eis a't not normally recom mended 1o' use with bronze, aluminum or simila' f;ange<, * T ht fluid remoerarjrt mev considcrabS e * creel 50* F provicn; t^.a: tr.e fcji* it-nz*'i'.u rz o! "G ral c>i`" oaz* c: is SbO'F o - ix/o* o' rfta: rhe fiuic ixnc h* nj'.er cor: nc: c one mic- c<^:: cor ;bc: * . rr. rAf c -?.c h, rr Example a me :a! cm a1-wound C?'.kf! w~.m a "Grafoi5" lilt?' rr.:p'ia` VJ S Paten- Nc. 3,4 0-2,06* C 000068 &tA d&zzZ .tGR^oi L'GAsket-.unitj^oad, ps i a; x j Gasket loading vs. leakage pressures The prime requirement for satisfactory sealing with "Grafoil" metal-inserted gaskets is suffi cient unit load on the gasket at all times in one continuous path around the gasket. If surfaces are maintained flat within 0.005 inches, and are held to a surface finish of 125 RMS or better, "Grafoil" gaskets will seal hydrostatic pressures as shown on the graph above, "Leak Pressure vs. Gasket Unit Load for 'Grafoil' Gaskets." A Net Load of 7,000 psi of dotted line example will sea! up 3,150 psi water pressure. The Net Unit Load is that force still exerted on the gasket surface after all the forces which tend to relieve the initial unit load are subtracted. One such opposing force is the "piston" action of the sealed pressure on the area w'ithin the gasket I.D. Others are bolt stretch, piping stress, and differential thermal expansion. The initial load on "Grafoil" gaskets must be enough to end up, under operating conditions, at or above the Net Unit Load indicated on the graph. C 000069 LAM021980 "GRAFOIL" METAL-INSERTED GASKETS PIPE-SIZE GASKET* DIMENSIONS Normally available from stock- HOW TO INSTALL HOWTO ORDER CUSTOM SIZES i Remove all projecting particles, scale, and burrs from the * flange faces. Small subsurface defects will cause no trouble. 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 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 frorr, those shown in the table, can be supplied upon request -- please furnish sketch and dimensional data. ` G BE 1 9 GRAFOIL i* registered ireoe me'* o' Uf'on C*bK3 Cor&oretion. EXPORT CANADA LAM021981 UNION CARBIDE CORPORATION CARBON PRODUCTS DIVISION C 000070 SALES OFFICE: 120 SOUTH RIVERSCE PLAZA. CHICAGO, ILLINOIS 60606 TELEPHONE: (312) 4SA-2020 CARSON PRODUCTS CviSlCN f XPOR' SalE 5 Cf r iCE. T7C PARK AVE . NE VS' *OB>' N V 10C17 UNION CARElDE CANACA liUiTED l<: EG. 'NT On avenue east. TORONTO CANADA A*<p \j: