Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-62 - General occupational health standards › Part F - CARCINOGENS › Section 296-62-07306 - Requirements for areas containing carcinogens listed in WAC 296-62-07302

Current through Register Vol. 24-14, July 15, 2024
(1)  A regulated
				area must be established by an employer where listed carcinogens are
				manufactured, processed, used, repackaged, released, handled or
				stored.
(2)  All such areas must be
				controlled in accordance with the requirements for the following category or
				categories describing the operation involved:
(a)
				 Isolated systems. Employees working with carcinogens within an
				isolated system such as a "glove box" must wash their hands and arms upon
				completion of the assigned task and before engaging in other activities not
				associated with the isolated system.
(b)
				 Closed system operation. Within regulated areas where carcinogens
				are stored in sealed containers, or contained in a closed system including
				piping systems with any sample ports or openings closed while carcinogens are
				contained within:
(i)  Access must be
				restricted to authorized employees only;
(ii)
				 Employees must wash hands, forearms, face and neck upon each exit
				from the regulated areas, close to the point of exit and before engaging in
				other activities.
(c) 
				Open vessel system operations. Open vessel system operations as defined in WAC
				296-62-07304 are
				prohibited.
(d)  Transfer from a
				closed system. Charging or discharging point operations, or otherwise opening a
				closed system. In operations involving "laboratory-type hoods," or in locations
				where a carcinogen is contained in an otherwise "closed system," but is
				transferred, charged, or discharged into other normally closed containers, the
				provisions of this section shall apply.
(i) 
				Access must be restricted to authorized employees only;
(ii)  Each operation must be provided with
				continuous local exhaust ventilation so that air movement is always from
				ordinary work areas to the operation. Exhaust air must not be discharged to
				regulated areas, nonregulated areas or the external environment unless
				decontaminated. Clean makeup air must be introduced in sufficient volume to
				maintain the correct operation of the local exhaust system.
(iii)  Employees must be provided with, and
				required to wear, clean, full body protective clothing (smocks, coveralls, or
				long-sleeved shirt and pants), shoe covers and gloves prior to entering the
				regulated area.
(iv)  Each employee
				engaged in handling operations involving the following carcinogens must be
				provided with and required to wear and use a NIOSH-certified self-contained
				breathing apparatus that has a full facepiece and is operated in a
				pressure-demand or other positive-pressure mode, or any supplied air respirator
				that has a full facepiece and is operated in a pressure-demand or other
				positive pressure mode in combination with an auxiliary self-contained
				positive-pressure breathing apparatus as required in chapter 296-842 WAC. A
				respirator affording higher levels of protection than this respirator may be
				substituted.
(A)  Methyl Chloromethyl
				Ether;
(B)  bis-Chloromethyl
				Ether;
(C)  Ethylenemine;
(D)  beta-Propiolactone;
(E)  4-Amino Diphenyl.
(v)  Each employee engaged in handling
				operations involving the following carcinogens must be provided with, and
				required to wear and use, NIOSH-certified air-purifying, half-mask respirator
				with particulate filters as required in chapter 296-842 WAC. A respirator
				affording higher levels of protection than this respirator may be substituted.
(A)  4-Nitrobiphenyl;
(B)  alpha-Naphthylamine;
(C)  4-4'Methylene
				bis(2-Chloroaniline);
(D) 
				3-3'Dichlorobenzidine (and its salts);
(E)
				 beta-Naphthylamine;
(F)
				 Benzidine;
(G) 
				2-acetylamino fluroene;
(H) 
				4-imethylaminoazobenzene;
(I) 
				n-nitrosodimethylamine.
must be provided with, and required to wear and use, a
				  half-face, filter-type respirator certified for solid or liquid particulates
				  with minimum efficiency rating of 95% as required in chapter 296-842 WAC. A
				  respirator affording higher levels of protection than this respirator may be
				  substituted.
(vi)
				 Prior to each exit from a regulated area, employees must remove
				and leave protective clothing and equipment at the point of exit and at the
				last exit of the day, to place used clothing and equipment in impervious
				containers at the point of exit for purposes of decontamination or disposal.
				The contents of such impervious containers must be identified, as required
				under WAC
				296-62-07302.
(vii)  Employees must wash hands, forearms,
				face and neck on each exit from the regulated area, close to the point of exit,
				and before engaging in other activities.
(viii)
				 Employees must shower after the last exit of the day.
(ix)  Drinking fountains are prohibited in
				the regulated area.
(e) 
				Maintenance and decontamination activities. In clean up of leaks or spills,
				maintenance or repair operations on contaminated systems or equipment, or any
				operations involving work in an area where direct contact with carcinogens
				could result, each authorized employee entering the area must:
(i)  Be provided with and required to wear,
				clean, impervious garments, including gloves, boots and continuous-air supplied
				hood in accordance with WAC
				296-800-160, and
				respiratory protective equipment required by this chapter 296-842
				WAC;
(ii)  Be decontaminated before
				removing the protective garments and hood;
(iii)
				 Shower upon removing the protective garments and hood.
(f)  Laboratory activities. The
				requirements of this subdivision shall apply to research and quality control
				activities involving the use of carcinogens listed in WAC
				296-62-07302.
(i)  Mechanical pipetting aids must be used
				for all pipetting procedures.
(ii) 
				Experiments, procedures and equipment which could produce aerosols must be
				confined to laboratory-type hoods or glove boxes.
(iii)  Surfaces on which carcinogens are
				handled must be protected from contamination.
(iv)  Contaminated wastes and animal
				carcasses must be collected in impervious containers which are closed and
				decontaminated prior to removal from the work area. Such wastes and carcasses
				must be incinerated in such a manner that no carcinogenic products are
				released.
(v)  All other forms of
				listed carcinogens must be inactivated prior to disposal.
(vi)  Laboratory vacuum systems must be
				protected with high efficiency scrubbers or with disposable absolute
				filters.
(vii)  Employees engaged
				in animal support activities must be:
(A) 
				Provided with, and required to wear, a complete protective clothing change,
				clean each day, including coveralls or pants and shirt, foot covers, head
				covers, gloves, and appropriate respiratory protective equipment or devices;
				and
(B)  Prior to each exit from a
				regulated area, employees must remove and leave protective clothing and
				equipment at the point of exit and at the last exit of the day, to place used
				clothing and equipment in impervious containers at the point of exit for
				purposes of decontamination or disposal. The contents of such impervious
				containers must be identified as required under WAC
				296-62-07310(2)
				and (3).
(C)
				 Required to wash hands, forearms, face and neck upon each exit
				from the regulated area close to the point of exit, and before engaging in
				other activities; and
(D)  Required
				to shower after the last exit of the day.
(viii)  Employees, other than those engaged
				only in animal support activities, each day must be:
(A)
				 Provided with and required to wear a clean change of appropriate
				laboratory clothing, such as a solid front gown, surgical scrub suit, or fully
				buttoned laboratory coat.
(B) 
				Prior to each exit from a regulated area, employees must remove and leave
				protective clothing and equipment at the point of exit and at the last exit of
				the day, to place used clothing and equipment in impervious containers at the
				point of exit for purposes of decontamination or disposal. The contents of such
				impervious containers shall be identified as required under WAC
				296-62-07310(2)
				and (3).
(C)
				 Required to wash hands, forearms, face and neck upon each exit
				from the regulated area close to the point of exit, and before engaging in
				other activities.
(ix) 
				Air pressure in laboratory areas and animal rooms where carcinogens are handled
				and bioassay studies are performed must be negative in relation to the pressure
				in surrounding areas. Exhaust air must not be discharged to regulated areas,
				nonregulated areas or the external environment unless decontaminated.
(x)  There must not be any connection between
				regulated areas and any other areas through the ventilation system.
(xi)  A current inventory of the carcinogens
				must be maintained.
(xii) 
				Ventilated apparatus such as laboratory-type hoods, must be tested at least
				semiannually or immediately after ventilation modification or maintenance
				operations, by personnel fully qualified to certify correct containment and
				operation.