Document Edr7j0BqV6Eg1RjQ8kXYxE7x
FRICTION MATERIALS STANDARDS INSTITUTE, INC., E-210 ROUTE U, PARAMOS, N.J. 07652
B TT j
IN
iT 0. 6 C S September 13, 1977
SUBJECT: An Exxon Company presentation concerning the handling of asbestos.
Mr. Ike Weaver of Raybestos-Manhattan recently sent me a copy of a paper by Dr. Harvey B. Snyder of the Exxon Company which appeared in the Medical Bulletin. Dr. Snyder discussed some background on asbestos along with a description of some of the physical characteristics of asbestos fibers. He also wrote further on clinical asbestosis with some theories on the pathogenesis of asbestos. Following Dr. Snyder's presentation, the Exxon Company presented recommendations for the handling of asbestos. I have copied a few pages from this article as it appeared in the Medical Bulletin and am enclosing it for your information.
There are recommendations concerning the use of protective dust respirators when working with asbestos products. While most handling of asbestos has been covered in the OSHA standards there appears to be a logical classification of asbestos-containing materials in which friction materials are placed in Group Number V. After classification of friction articles in this group the Exxon presentation shows Table II with guides for the use of respiratory protection equipment. In particular this involves grinding, sanding, cutting, drilling, banding, riveting, and application of friction materials. It indicates type of respirator to be used depending on the operation. Following this is a list of the names and addresses of manufacturers and/or distributors of certain types of respiratory protection equipment. In addition, this paper Included a listing of British sources of dust respirators.
This enclosed information may be of help to you and your customers as regards recommended respirator usage in working with friction materials.
CC: Active Members - List C Regional Members
E. W. Drislane Executive Director
FMSI--0270
FMSI 03381
BRITISH SOURCES--DUST RESPIRATORS
Angus Fire Armour George Angus & Co. Ltd. Bentham Lancaster, LA2 7NA
Chapman and Smith Ltd. Safir Works East Hoathley, Nr. Lewes Sussex, BN8 6EW
Draeger Normalair Ltd. Kitty Brewster, Blyth Northumberland, NE24 4RH
James North & Sons I.td. P.0. Box 3, Hyde Cheshire, SKI 4 1RL
The Leyland & Birmingham Rubber Co. Ltd. Leyland. Nr. Preston Lancashire, PR5 1UB
Martindale Protection Ltd. Neasden Lane London NW10 lf
Mine Safety Appliances Co. Ltd. Queenslie Industrial Estate Glasgow, G33 4BT Scotland
Phoenix Accessories (Milnsbridge) Ltd. 77 Waterloo Road, Pudsey, Yorkshire, LS28 8DQ
Safety International British American Optical Co. Ltd. Radlett Road Watford, Herts, WD2 4LJ
Protector Safety Products (UK) Ltd. Protector House 719 Banbury Avenue Slough Berkshire, SL1 4LL
Siebe Gorman & Co. Ltd. Davis Road, Chessington Surrey, KT9 1TW
Staysafe & Co., Ltd. 909 Wolverhampton Road Warley
Worcestershire, B69 9RR
FMSI 03382
*
ASBESTOS HANDLING PROCEDURE*
Asbestos fibers have been deemed a serious respiratory hazard and control of worker exposure is considered necessary to prevent asbestosis and asbestos-induced neoplasms. Various Exxon af filiates have taken positive action limiting the use of and requiring substitutes for asbestos-containing materials including talc, asbestos insulation materials (all high temperature insulation ra.? be assumed to be asbestos or contain 3% or more asbestos as a binaer), asbestos fire blankets, etc. However, asbestos has been used for many years and its presence will be noticed each time insulcilot must be removed, during turnaround work and sometimes in rew construction when asbestos insulation is the only suitable material. At scheduled turnaround, the breaking of insulation and reins'..tiling same after piping completions, etc. will entail some exposure to asbestos fibers.
Despite the existence of widespread knowledge concerning the
potential health hazards of this material, there is significant varia
tion in control measures in effect at the operating affiliates. As a
result, Exxon Corporation Medical Department has issued a Policy
on the control of asbestos as a guide to the elimination or reduction
to minimal levels in the use of asbestos in new construction where
possible and to establish procedures for the handling of asbestos-
containing material already in use. The following work practices
are recommended:
.
(1) Asbestos-containing cements, mortars, coatings, grout and
plaster should be mixed in closed bags or other containers. Manufacturers have high temperature mortars packed in plastic bags so that water can be added directly to the bags through a spout and moistened before opening. Moistened mortar is removed as required and mixing is completed in the shipping container. All waste is replaced in this container and sent to disposal at the end of the shift.
FMSI 03383
v
(2) Removal of asbestos insulation or ripping-off procedures must be done in a manner which will minimize scatter, dusting or dispersion of asbestos. After removing the wire clips'and bands holding the jacket, and the jacket from the insulation, the su.face insulation should be wetted. A plastic sheet placed below the piping
or struclure will serve subsequent clean-up. As many large pieces
should be removed as feasible to minimize the number of cuts required.
(3) All waste insulation should be placed in dust-proof bags and all clean-up of asbestos dust shall be performed by vacuum cleaners or by wet cleaning methods. No dry sweeping should be allowed.
(4) There should be no spraying of asbestos material without precautions to limit the spread of ovcrspray.
(5) Where possible, restrict movement into areas where asbestos dust is being generated by roping and signs which read "Keep Out--Authorized Entry Only."
(6) Special protective clothing should be provided to employees working in areas where asbestos dust is being generated. Care should be exercised in laundering and other handling of con taminated clothing.
Effective July 1, 1976 the OSH A time weighted average (8-hour) standard for asbestos is 2 fibers (>5jrm in length) per ml of air. A i5-minute ceiling limit of 10 fibers (>5urn/ml) also applies. Since air monitoring may not always be possible the approximate guide in Table II has been prepared as an aid to respirator selection. However, whenever there is any doubt whether these recommenda tions are adequate or where air monitoring data is available, respirators should he selected to insure that exposure does not exceed recommended standards.
Air monitoring techniques to determine concentrations recom mended in the standard require some sophisticated equipment and skill. Accordingly to minimize exposures, a scries of procedures are recommended in lieu of air monitoring. These are as follows:
All persons within the work area shall wear personal respiratory protective equipment selected on the basis of potential airborne concentrations of asbestos dust exceeding a TWA limit of 2 fibcrs/ml as time weighted average with a ceiling limit of 10 fibers/ml.
- -Respirators supplied for the specific application should be cleaned of disposed, maintained and serviced regularly. When not in use they should be stored in dust proof containers, e.g., a sealed plastic bag.
The following classification has been adopted for the purpose of recommending appropriate respirators for the type of asbestos material involved in each operation (See Table 1).
Table 1, Classification of Asbestos Containing Materials
Group I
Croup II Croup lit Croup IV
OrtMjp V
(Applied dry)
Molded asbestoe
.
Molded eelelum siucate/asbettea
Molded megnede (85%)
Molded high lempereture Insulating block
rAopPed wet) Calcium silicate (plastic) 8V4 magnesia (plastic) Hare-setting asbestos cement
Sprayed esbeeloe
Cement asbestos (herd) Rooting sheets Dram pipes Building boards
Asbestos rope, yarn (ape end seeling materials (not Impregnated Asbestos blankets end clothing
Asbestos millboard end paper Filler melt end gauiee
Resin-bonaed end asbestos rslnforced moterlsl |e g.. (ricrion linings end electrical insulating materials)
Asbestos giend packing (impregnated) Compressed fiber Jointing
Gaskets and preformed packlnge
Table 2. Respiratory Protection Equipment Selection Culde
Operation
Respiretory Protection Required
Ory Operation Typed Asbestos Material Dead With Vent.* No. Vont
Wet Operation* With Vent No. Vent
Spraying/DemollUon (Confined space)
Tearing Out Insulation (Confined space) (Outdoor')
1,11 .
0 0 C0
C 0 C6
C
C
Fuliface 8
C
*
FMSI 03385
tr
Operation
Housekeepinp (Confined space) Sweeping Vacuuming (outdoor) Sweeping Vacuunvng
App. cation (Conf-neo space)
, (Cutfioo'l
Maleriai Hana. ng , (Confined space) j Mixing
Was'e disposal | Chs/g.ng
(Outdoor) | Mixing
Waste dsposil Charging
Grind.r.g & Sanding [Conl.ned space) (Outdoor)
Cutting 4 D.-itlmg iConrireo space) (Outdoor)
! Cutting 4 Oriii'ng
(Ccr.l red space) (Outdoor)
Banding 4 R.vetting (Confined space) (Outdoor)
Applicet on (Cont.red space) (Outdoor)
Table 2. (Continued)
Typeot Asbeetoe
Material Used
>C
1
Respiratory Protection Required
Dry Operation
WelOperatlon*
* No. Vent. With Vent No. Vent
Ad groups All groups All groups
AH groupa All groups
1,11
Ml
c
Fullface B
Fullface B AorB
0 C
Fulllace 8 Fulllace B
Fullfacs 8 AorB
C Fulllace B
Fulllace B AorB
B AorB
C AorB
B AorB
Fulllace B Fullfac# 8
AorB
AorB
. 1.11
l.ll Ml Ml All groupa l.ll III.V
m.v
IV
III.V
tiuv.v
Fulllace B
CorO
A or 8 Fulllace 8 or C
Fulllace B
CorO
AorB AorB
B
C FuSfaca B
Fulllace B
Aor B A or B AorB
A or B AorB AorB
A or B A or B
C A or B
Nona None
Nona
Aor 8
None
Nona Nona
None None
None None
AorB A
AorB A or B
Nona Nona
None None
None None
None None
A or B A or B AorB
A or B AorB AorR
AorB --
AorB
None None
Non* None
None Norte
A -- Sing'B use % lace respirator with or without exhalation valve B -- Air purifying 'h face respirator with feptoesatne particulate (liter C -- Powered air purity.ng respirator, with high efficiency filter D -- Supplied air respirator with full facepiece, continuous flow or pressure demand
Notes:
1 -- Refers to any operation performed outside any confined space where natural ventilation is available
2 -- Verrt.iation refers to any mechanical exhaust or dilution unit. When applied to "outdoor" It refers to mechanical ventilation In addition to already present natural ventilation.
3- Tiiis implies a thorough soaking of tha material belora any operation It begun.
Superficial wetting will not provide adequate control.
34
FMSI 03386
The following respirators or their equivalent atu recommended for use when working with asbestos containing materials.
A. Single Use Respirator* (Disposable)
Manufacturer*
3M
Willson AO.
Safelfne
3M
Modal Number
8710 WOO
R1050
53S0 8800
B. Air Purifying Respirators with Replacement Filter (Reuaebla)
Manufacturer*
MSA MSA Willson Witison Willson
AO. t .O. SafeUne Waish Walsh Covar CESCO Glendale
Modal Numbar
459440 459438
560 1210 1211 R5030 R6030 5265 7506 7406C 1482-F100 94R20 GR2000
.
Replacement Filter
459595(10) 459321 R60 RIO Rll R30 R30 590$ 7S00-8 7400-6 M00 R20 FlO
C. Supplied Air Respirators With Full Facepiece
Manufacturer*
SurvIvAIr
3M Scon
MSA Pulmossn Willson Bullard A.O. Lear Sleglar
Model Numbar
9011-13 9811-13
W340 46t6-11
801548 460862 A480S10168
1810 ' 46 RS099 0501 -A
Operating Modi
Pressure demand Pressure demand Continuous flow Continuous How Pressure demand Continuous flow Continuous (low Continuous how Continuous flow Continuous How Pressure demand
AjWiwaorminoftdurcrt
mj
FMSI 03387
THE MEDICAL BULLETIN
NAMES AND ADDRESSES OF MANUFACTURERS AND DISTRIBUTORS
American Optica! Corp., Safety Products Div., 100 Cana! St., Put nam, Connecticut 06260.
Bullard, E.D., Co., 2680 Bridgeway, Sausalito, California 94965.
Cesco Safety Products, Parmalce Industries, Inc., P.O. Box 1237, Kansas City, Missouri 64141,
Cover, H.S. Co., 107 East Alexander St., Buchanan, Mississippi 49107.
Glendale Optica! Co., 130 Crossways Park Drive, Woodbury, N.Y. 11797.
Lear Siegler, Inc., 714 North Brookhurst St., Anaheim, California
92803.
.
Mine Safety Appliances Co., 400 Penn Center Blvd., Pittsburgh, Penna. 19535.
Pulmosan Safety Equipment Corp., 30-48 Linden Place, Flushing, N.Y. 11354.
Safeline Products, P.O. Box 550, Putnam, Connecticut 06260.
Scott Aviation Division of ATO, Inc., Lancaster, N.Y. 14086.
SurvivAir, Division of U.S. Divers Co., 3323 W. Warner Avc,, Santa Ana, California 92702.
3M Company, 3M Center, St. Paul, Minnesota 55101.
Welsh Manufacturing Co., 9 Magnolia Street, Providence, Rhode Island 02909.
Willson Products Div., ESB Inc., P.O. Box 622, Reading, Pennsyl
vania 19603.
FMSI 03388
T
Respirators supplied for the specific application should be cleaned or disposed, maintained and serviced regularly. When not in use they should be stored in dust proof containers, e.g., a sealed plastic bag.
The following classification has been adopted for the purpose of recommending appropriate respirators for the type of asbestos material involved in each operation (See Table 1).
Table 1. Classification ot Asbestos Containing Material*
Group S Group l
Group 111
Croup IV Q Wj? V
(Applied dry)
Molded asbestos
.
Moide d calcium enici?e/beitot
Moot'd magnate (95%)
Melded nigh temperature insulating block
/Aopi^d W#t)
Calcium filrcata (plastic)
ib% rr.?gnejKpiiSt!C)
H6'o-r>e:ting asbesloa camant Spr>d asbestos
Cement asbestos (bard) ftoof-'ig sheets
Du n p<pet
B'jtidmg boards
Asbestos rope, yarn tape and seeling meteWe't fnot/mprepnai*y; Asbestos blankets and etc thing Asbestos minbcerd end paper Filter mats and gavres
Psa'p-bonded asbestos reinforced material (a 9 . friction i'n rg* and etectncai insulating material*)
AsbsOS Jland paojr-g (impregnated) Compressed l>ber jointing Gaskets and preformed packing*
Table 2. Respiratory Protection Equipment Selection Guide
.
Operation Spraylng/Demolltlon
(Confined apace) rearing Out InaulalkM
(Confined apace) (Outdoor1)
` Batplralory Protection Required
0ry Operation
Type of
.
Atbeatoa
Malarial Used With Van!.* No. Vent
Wat Operation* With Vent No. Vast
1,11 0 0 c 0
Ul c 0 c c
c
c
fuilisce d
c
*
FMSI 03389
tr
Operation
Housekeeping {Confined space) Sweep'ng Vacwu-ning (OulCOOO S*.ee?irg Vecuunvrg
Apccaton (Conf.A*d space) {Otftdoof}
Material Handing iConfired space) M`ing Ware dspose! C^srg.rg (OjtJOO<! N4.-x>r.g Waste d sposel CfWQing
Cwotr-s & Sending (Confined space) (Outdoor)
Cvfl.ng 4 Or.'(;rg 'Cor.f.rec space) (Outdoor)
Cutting* Crii'r.p
{Ccrf red space) (Outdoor)
8jrd<ng A fl.vetting fCo^fned space) (Outdoor)
Appf.cs* on (Conf.ced space) (Outdoor)
Tab!* 2. (Continued)
Beoplratory protection Baqulred
Typa of
Dry Operation '
Waf Operation* ------_
Atboatoa Materiel Used With Vent.* No. Vent. With Vent No. Vent
AM groups All groups AM groups
All groups Ati groups
Mi Ml
C Furnace ft
FuilUce ft A or B
0 , Futllice B c AorB
FullUce 8 FuWeceft
B AorB
C Aor B
B AorB
Fufitace 8 c Futttneo B Fuiltace ft
Acr B
FuirS'- e 9
AorB
AorB
. UJ (.11 Ml Ml
AH groups Ml M.V
M1,V
IV
ill.V
Hl.lV.V
FgiMnce 6
C or 0
A <,r Q FuUfsce BorC
Fgrtiace B
CerO
A or 9 A or B
8
C FuHtecti B FuHfece 6
A or B A or B A or B
AorB AorB AorB
A or B A ore
C A or ft
Nono Non#
Hons
A or 8
Mono
None None
None Non
None None
AcB A
A Of 9 A or 3
None Non?
NQno Nono
Nono Mono
None Nono
A or B A or 0 AorB A or 9 Aor B AorB
AorB --
A or 8
None None
None None
None None
A -- S'nj'e use % taco respirator with or w|thout exhalation val B -- Air purifying face respirator with replaceable particulate fitter C -- Powered air putify.ng respirator, with high efficiency filler 0 -- Supplied air respirator with full facepiece, continuous How or pressure demend
Nolst: 1 -- Refers to any operation performed outside any confined space where natural
ventilation is available
2 -- Vert.ijtion refers to any mechanical exhaust or dilution unit. When applied to "outdoor" It refers to mechanical vantiletibn In addition to already present natural ventilation.
3 -- this implies a thorough soaking of the material before any operation le begun.
Superficial wetting will not provide adequate control.
34
FMSI 03390
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