NYC 9/11 Public Portal Document
4
AMERICAN SOCiSr* FOR TBSriNB ANO MATCniAtS
Designation: D 5755 - 95 IDS nw* st. FnonacipNa. P> 1»m
Atpiinled hom IM Annunl Beek al ASTM SlXnaxtOl. DOpyTigN ASTM
H net wigu In om cuntnt coreWned Me*. wXI apoear ai the adxsn
Standard Test Method for
Microvacuum Sampling and Indirect Analysis of Dust by
Transmission Electron Microscopy for Asbestos Structure
Number Concentrations'*
Thi» uanAne !(Issued under ihe fixed designaUoB O 5755; the ournbrr immcdiaidy roltowinr the desintuon indicaiei the yeir of
original adoption or. in Iha case ot revixlan, the year of Im rerixioh. a number in parenihcsex tndicata the year orioM reapproval. A
tapeneripi eprilon f.) Indlalex an edilorial thangt tiltee the fad levlilon or TCaPOfOval.
1. Scope responsibility of (he user of this standard to establish appro
1.1 This test method covers a procedure to (n) identify priate safety and health practices and determine the applica
asbestos in dust and (h) provide an estimate of the concen bility ofregulatory limitations prior to use.
tration of asbestos in the sampled dust reponed as the
number of asbestos structures per unit area of sampled X Referenced Documents
surface. 2.1 ASTM Standards:
1.1.1 If an estimate of the asbestos mass is to be deter* D1193 Specification for Reagent Water’
mined, the user is referred to Test Method D 5756. D1739 Test Method for the Collection and Measurement
12 This test method describes the equipment and proce of Dustfall (Settleable Particulate Matter)’
dures necessary for sampling, by a microvacuum technique, D3I9S Practice for Rotameter Calibration’
non-airbome dust for levels of asbestos structures. The D3670 Guide for Determination of Precision and Bias of
non-airbome sample is collected inside a standard fiber Methods of Committee D-22*
membrane cassette from the sampling of a surface area for D5756 Test Method for Microvacuum Sampling and
dust which may contain asbestos. Indirect Analysis of Dust by Transmission Electron
12.1 This procedure uses a microvacuuming sampling Microscopy for Asbestos Mass Concentration’
technique. The collection efficiency of this technique is
unknown and will vary among subrfraies. Properties influ* 3. Tcnninology
encing collection efficiency indude surface texture, adhesive* 3.1 Definiiions:
ness, dectrostatie properties and other factors. 3.1.1 asbeaforrrt—e. special type eSfibrous habit in which
1 J' Asbestos identified by transmission electron micros the fibers are separable into thinner fibers and ultimately
copy (TEM) is based on morpholo^, selected area electron into fibrils. This habit accounts for greater flexibility and
diffraction (SAED), and energy dispersive X-ray analysis higher tensile strength than other habits of the same mineral.
(EDXA). Some i^ormation about structure size is also For more information on asbestiibrm mineralogy, see Reft
determined. ova) and (3).
1.4 This test method is generally applicable for an esti 3.12 asbesto5~-i collective term that describes a group of
1! mate of the concentration of asbestos structures starting from
approximately 1000 asbestos struetutr per square centi
naturally occurring, inorganic, highly fibrous, silicate domi
nated minerals, which are easily s^arated into long, thin,
metre. flexible fibers when crushed or processed.
1.4.1 The procedure outlined in this tea method employs Discussion—induded »the defimtion an me ashesdfiwm varieties
ap indirect sample preparation technique. It is int^ed to of. serpentine (chrysotile); riebecto’ie (emddolheX grunerite (grunerite
di^icrsc aggregated asbestos into fundamental fibrils, fiber asbestos): anthophylHte (aothoph^e asfaotosh tretnoHte (oenwliie
bundles, clusters, or matrices that can be more accurately asfaesun); aad actinolite (actinolite nsbestos). The attipbiboie mineral
quantise by transmisrion electron microsoc^. However, as eojaposftioai ate defined atxarding to Bomeadantre of the Interna.
with all indirect sample preparation techniques, the asbestos tiond Mineialogical Asadafiott (3).
observed for quantification may not represent the physical Ajbesios Chemical Ahuna Sareico. Io.’
form of the adiestos as sampled. More specifically, the QitjtoiQa 13001-294
procedure described nertber creates nor destroys asbestos, CroddoOta I2001-2M
Craneiite Asboioi 12I72-7J-5
but it may alter the physical form of the mineral fibers. AWhophyDlwAtbeRce 77S3M7.S
IJ The values stated in SI units are to be regarded as the Tiestafils Arbatos 77SK414
I studard. The values given in parentheses are for informa AedBoUwAsbesiM 77SM4tu
i tion only.
1.6 This standard does not purport to address all of the
11J single fiber that cannot be separated nio
safety concerns, if any, associated with its use. it is the
*Annual Book ^ASTM Standanb. Vol 11^1.
i Annual Beat rfASrUSlandanti.'Vti IlJJi
'71b lot nethod fa tnder lie jivtadfaiieB of ASTM Comininec D-32 m * The boWraoe mmbm in paraubeje* refer la the Un of referenoa at the end
SsrapCRc aad Aaaljm of Aonowhena and fa ita Acei lewonWbahy of oTthfalal nelbod.
SubcooimiH* D2U7 on Saaiplint and Anabafa of AaboM. *The noa-nfaenUbnn varfaiiom of the mioeralt indknted in J.I4 ha»e
Cimoat edWoB apfwowd AwM IS. I9J5. PobTohed October 1W5. diircml Ownueal AbsBact Semes (CAS) ninnben.
1
I
N YC-WTC_000149446
OCR can misread numbers and units. Confirm readings against the page image before using them.