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cations to job placement. include a history of chronic skin should be disease,concurrent dermatitis,or mild non-hemolytic anemia rruasur tabour during one vwrltshift,and the highest of all (e.g., mild iron-deficiency anemia). ents taken is an estimate of the worker's exposure. If the Periods of maximum • p*.i�� exposure are not clearly defined. f Occupational screening view and/or ys biologic moeit ti ns a sntistical Procedure which can be used as a peak exposure health interviews and Physical criminations detection strategy is given in the Oreupahonal F_rpewre&m- Should be performed at regular intervals.Additional examina- Piing Strategy Manual. tions may be necessary should a worker report symptoms that • Method my be attributed to a Xposure to benzene.The interviews,ex- Sampling and analysis may be perfornxd 1 aminations.and appropriate medical by collecting beu- scree W*and/or biologic zene vapors with charcoal tubes followed by desorption with r monitoring tests shouldbe directed at identifying an excessive carbon disulfide and analysis by gas chromatography,Dire a- decrease or adverse the integrity and pltysidogiC func. reading devices calibrated m measure benzene tion of the skin, liver. and respiratory, nervous, and hems- if mailable.q may also be used topoietie (blood-call- ��dg and analytical method for ben- forming) systems as compared to the zene may be farnd in theMIOSHManud ofAnal)ricaal Me dsods baseline status of the individual worker or to otpected values (method number M). fur a suitable reB nmm population.The following teas should be used and interpnsed according to ssaedardized procedure5 PERSONAL PROTECTIVE EQUIPMENT and evaluation criteria necomnuended by NIOSH and theAIS: ' Standardized questionnaires and tests of lung ftanctian. Chemical protective clothing(CPC)should be selected after • WOW practim rwimmended at the time of jobtrans- sizing available performance data. consulting with the fee or texedeadoe. trer.and than evaluating the clothing under actual use The medical,a vironmettal,and occupational history infer- conditions. i views,the physical a ernination.and selected plosiologic and laboratory fess which were conducted u the timeeafplacerreestt �nt should be provided with and required to use CPC. - t should be repeated at the time of job tranSkr or termination, lite"Slaveand other appropriate protective clothing ,to i Any Changes in the workees haft Status Should be compared P skin contact wide benzene. to those expected for a suitable reform population.because SANITATION Occupational exposure to benzene may cause diseaseu of PrWongad MaY extend l onbeyond termination offormWkW survaillance Clothing which is contaminated with bment. enzene should be re- Sentinel btt;hlt e v moved immediately and placed in sealed contaniers for storage until it can be discarded or until provision is made for the 1.Acute SHE's include:Acute myeloid le ulmmia and contact removal of benzene from the clothing. If the clothing is to be and/or allergic derrmatuia• laundered or cleaned, the person performingthe 2.Delayed-onset SHE's include:Decmase in the number(neu- should be informed of benzene's hazardous operation tropernia)or absence(agranulorya�is)Of certain white blood able cloth' ck dfor r idus- cells in the �and e9Wl�t should be checked for residual a Peripheral circulation and/or in the bone marrow contamination before reuse or storage. ' (aP'Wdcc anemia)and cancer of the rod blood cells(erythro- A change room with sh ewers,washing facilities,and lockers j that Permit Separation of street and work clothes should be MONITORING AND MEASUREMENT provided. PROCEDURES Workers should be required to shower fall awing a worksltift TWA CXPOSM eosltuHon and prior to Putting on s um clothes.Clean work clothes should Measurements to determine worker be Provided daily. should be taken oto that the TWA tips base d benzene Skin that becomes contaminated with benzene should be urine wat'kshiR e�tpasure is based an a single _� tine sample or an appropriate munbcr of consccu- P�PdY washed with soap and water. Samples collected durb g die entire workshiL Under Cer- %forloers who handle benzene should wash their faces,bunds. tain-conditions, it may be appropriate to collect several and forearsra f �rt�interval dwroughly with soap and water before eating, (up to 30 1111011tes each)to deter- smoking,or using toilet facilities. mine the average eagwW a level.Au SIMPlesshould be taken in the worker's breading mom(air that Brost mrly represents The stomM PITIMOm dispensing,or Consuntption of food that inhaled by the worker). or kwjages, the, storage or application of cosmetic. the • Csillag e:aoe entration eralnatlon stmage or use of snx*k g Vis.or the storage or use of Muria to determine workereatposure should be taken Pn� for clawing should be prohibited is work areas. Gdurinperiods MZnUbmm m °O0°�'u1Oc ofCOMMON OPERATIONS AND CONTROLS I, ofd Each Measurement de:faamtine the MOSH REI. (OC11=8 fin)in the workees brew&ng zone(Wdm moat nearly fePmsents that inhaled by the workw)sheurtld Consist Comate control mnahod:which to benzene may o=w of a minute sample. A minimum of three m Uy be edliective;in each case ase listed in moble 2. 1988 1 Bunten 3