296-62-20007  <<  296-62-20009 >>   296-62-20011

WAC 296-62-20009

Methods of compliance.

The employer must control employee exposure to coke oven emissions by the use of engineer controls, work practices and respiratory protection as follows:
(1) Priority of compliance methods.
(a) Existing coke oven batteries.
(i) The employer must institute the engineer and work practice controls listed in subsections (2), (3) and (4) of this section in existing coke oven batteries at the earliest possible time, but not later than January 20, 1980, except to the extent that the employer can establish that such controls are not feasible. In determining the earliest possible time for institution of engineer and work practice controls, the requirement, effective August 27, 1971, to implement feasible administrative or engineer controls to reduce exposures to coal tar pitch volatiles, must be considered. Wherever the engineer and work practice controls which can be instituted are not sufficient to reduce employee exposures to or below the permissible exposure limit, the employer must nonetheless use them to reduce exposures to the lowest level achievable by these controls and must supplement them by the use of respiratory protection which complies with the requirements of WAC 296-62-20011.
(ii) The engineer and work practice controls required under subsections (2), (3) and (4) of this section are minimum requirements generally applicable to all existing coke oven batteries. If, after implementing all controls required by subsections (2), (3) and (4) of this section, or after January 20, 1980, whichever is sooner, employee exposures still exceed the permissible exposure limit, employers must implement any other engineer and work practice controls necessary to reduce exposure to or below the permissible exposure limit except to the extent that the employer can establish that such controls are not feasible. Whenever the engineer and work practice controls which can be instituted are not sufficient to reduce employee exposures to or below the permissible exposure limit, the employer must nonetheless use them to reduce exposures to the lowest level achievable by these controls and must supplement them by the use of respiratory protection which complies with the requirements of WAC 296-62-20011.
(b) New or rehabilitated coke oven batteries.
(i) The employer must institute the best available engineer and work practice controls on all new or rehabilitated coke oven batteries to reduce and maintain employee exposures at or below the permissible exposure limit, except to the extent that the employer can establish that such controls are not feasible. Wherever the engineer and work practice controls which can be instituted are not sufficient to reduce employee exposures to or below the permissible exposure limit, the employer must nonetheless use them to reduce exposures to the lowest level achievable by these controls and must supplement them by the use of respiratory protection which complies with the requirements of WAC 296-62-20011.
(ii) If, after implementing all the engineer and work practice controls required by (b)(i) of this subsection, employee exposures still exceed the permissible exposure limit, the employer must implement any other engineer and work practice controls necessary to reduce exposure to or below the permissible exposure limit except to the extent that the employer can establish that such controls are not feasible. Wherever the engineer and work practice controls which can be instituted are not sufficient to reduce employee exposures to or below the permissible exposure limit, the employer must nonetheless use them to reduce exposures to the lowest level achievable by these controls and must supplement them by the use of respiratory protection which complies with the requirements of WAC 296-62-20011.
(c) Beehive ovens.
(i) The employer must institute engineer and work practice controls on all beehive ovens at the earliest possible time to reduce and maintain employee exposures at or below the permissible exposure limit, except to the extent that the employer can establish that such controls are not feasible. In determining the earliest possible time for institution of engineer and work practice controls, the requirement, effective August 27, 1971, to implement feasible administrative or engineer controls to reduce exposures to coal tar pitch volatiles, must be considered. Wherever the engineer and work practice controls which can be instituted are not sufficient to reduce employee exposures to or below the permissible exposure limit, the employer must nonetheless use them to reduce exposures to the lowest level achievable by these controls and must supplement them by the use of respiratory protection which complies with the requirements of WAC 296-62-20011.
(ii) If, after implementing all engineer and work practice controls required by (c)(i) of this subsection, employee exposures still exceed the permissible exposure limit, the employer must implement any other engineer and work practice controls necessary to reduce exposures to or below the permissible exposure limit except to the extent that the employer can establish that such controls are not feasible. Whenever the engineer and work practice controls which can be instituted are not sufficient to reduce employee exposures to or below the permissible exposure limit, the employer must nonetheless use them to reduce exposures to the lowest level achievable by these controls and must supplement them by the use of respiratory protection which complies with the requirements of WAC 296-62-20011.
(2) Engineer controls.
(a) Charging. The employer must equip and operate existing coke oven batteries with all of the following engineer controls to control coke oven emissions during charging operations:
(i) One of the following methods of charging:
(A) Stage charging as described in subsection (3)(a)(ii) of this section; or
(B) Sequential charging as described in subsection (3)(a)(ii) of this section except that subsection (3)(a)(ii) and (3)(d) of this section does not apply to sequential charging; or
(C) Pipeline charging or other forms of enclosed charging in accordance with (a) of this subsection, except (a)(ii), (iv), (v), (vi) and (viii) of this subsection do not apply.
(ii) Drafting from two or more points in the oven being charged, through the use of double collector mains, or a fixed or moveable jumper pipe system to another oven, to effectively remove the gases from the oven to the collector mains;
(iii) Aspiration systems designed and operated to provide sufficient negative pressure and flow volume to effectively move the gases evolved during charging into the collector mains, including sufficient steam pressure, and steam jets of sufficient diameter;
(iv) Mechanical volumetric controls on each larry car hopper to provide the proper amount of coal to be charged through each charging hole so that the tunnel head will be sufficient to permit the gases to move from the oven into the collector mains;
(v) Devices to facilitate the rapid and continuous flow of coal into the oven being charged, such as stainless steel liners, coal vibrators or pneumatic shells;
(vi) Individually operated larry car drop sleeves and slide gates designed and maintained so that the gases are effectively removed from the oven into the collector mains;
(vii) Mechanized gooseneck and standpipe cleaners;
(viii) Air seals on the pusher machine leveler bars to control air infiltration during charging; and
(ix) Roof carbon cutters or a compressed air system or both on the pusher machine rams to remove roof carbon.
(b) Coking. The employer must equip and operate existing coke oven batteries with all of the following engineer controls to control coke oven emissions during coking operations:
(i) A pressure control system on each battery to obtain uniform collector main pressure;
(ii) Ready access to door repair facilities capable of prompt and efficient repair of doors, door sealing edges and all door parts;
(iii) An adequate number of spare doors available for replacement purposes;
(iv) Chuck door gaskets to control chuck door emissions until such door is repaired, or replaced; and
(v) Heat shields on door machines.
(3) Work practice controls.
(a) Charging. The employer must operate existing coke oven batteries with all of the following work practices to control coke oven emissions during the charging operation:
(i) Establishment and implementation of a detailed, written inspection and cleaning procedure for each battery consisting of at least the following elements:
(A) Prompt and effective repair or replacement of all engineer controls;
(B) Inspection and cleaning of goosenecks and standpipes prior to each charge to a specified minimum diameter sufficient to effectively move the evolved gases from the oven to the collector mains;
(C) Inspection for roof carbon build-up prior to each charge and removal of roof carbon as necessary to provide an adequate gas channel so that the gases are effectively moved from the oven into the collector mains;
(D) Inspection of the steam aspiration system prior to each charge so that sufficient pressure and volume is maintained to effectively move the gases from the oven to the collector mains;
(E) Inspection of steam nozzles and liquor sprays prior to each charge and cleaning as necessary so that the steam nozzles and liquor sprays are clean;
(F) Inspection of standpipe caps prior to each charge and cleaning and luting or both as necessary so that the gases are effectively moved from the oven to the collector mains; and
(G) Inspection of charging holes and lids for cracks, warpage and other defects prior to each charge and removal of carbon to prevent emissions, and application of luting material to standpipe and charging hole lids where necessary to obtain a proper seal.
(ii) Establishment and implementation of a detailed written charging procedure, designed and operated to eliminate emissions during charging for each battery, consisting of at least the following elements:
(A) Larry car hoppers filled with coal to a predetermined level in accordance with the mechanical volumetric controls required under subsection (2)(a)(iv) of this section so as to maintain a sufficient gas passage in the oven to be charged;
(B) The larry car aligned over the oven to be charged, so that the drop sleeves fit tightly over the charging holes; and
(C) The oven charged in accordance with the following sequence of requirements:
(I) The aspiration system turned on;
(II) Coal charged through the outermost hoppers, either individually or together, depending on the capacity of the aspiration system to collect the gases involved;
(III) The charging holes used under (a)(ii) and (b) of this subsection relidded or otherwise sealed off to prevent leakage of coke oven emissions;
(IV) If four hoppers are used, the third hopper discharged and relidded or otherwise sealed off to prevent leakage of coke oven emissions;
(V) The final hopper discharged until the gas channel at the top of the oven is blocked and then the chuck door opened and the coal leveled;
(VI) When the coal from the final hopper is discharged and the leveling operation complete, the charging hole relidded or otherwise sealed off to prevent leakage of coke oven emissions; and
(VII) The aspiration system turned off only after the charging holes have been closed.
(VIII) Establishment and implementation of a detailed written charging procedure, designed and operated to eliminate emissions during charging of each pipeline or enclosed charged battery.
(b) Coking. The employer must operate existing coke oven batteries pursuant to a detailed written procedure established and implemented for the control of coke oven emissions during coking, consisting of at least the following elements:
(i) Checking oven back pressure controls to maintain uniform pressure conditions in the collecting main;
(ii) Repair, replacement and adjustment of oven doors and check doors and replacement of door jambs so as to provide a continuous metal-to-metal fit;
(iii) Cleaning of oven doors, chuck doors and door jambs each coking cycle so as to provide an effective seal;
(iv) An inspection system and corrective action program to control door emissions to the maximum extent possible; and
(v) Luting of doors that are sealed by luting each coking cycle and reluting, replacing or adjusting as necessary to control leakage.
(c) Pushing. The employer must operate existing coke oven batteries with the following work practices to control coke oven emissions during pushing operations:
(i) Coke and coal spillage quenched as soon as practicable and not shoveled into a heated oven; and
(ii) A detailed written procedure for each battery established and implemented for the control of emissions during pushing consisting of the following elements:
(A) Dampering off the ovens and removal of charging hole lids to effectively control coke oven emissions during the push;
(B) Heating of the coal charge uniformly for a sufficient period so as to obtain proper coking including preventing green pushes;
(C) Prevention of green pushes to the maximum extent possible;
(D) Inspection, adjustment and correction of heating flue temperatures and defective flues at least weekly and after any green push, so as to prevent green pushes;
(E) Cleaning of heating flues and related equipment to prevent green pushes, at least weekly and after any green push.
(d) Maintenance and repair. The employer must operate existing coke oven batteries pursuant to a detailed written procedure of maintenance and repair established and implemented for the effective control of coke oven emissions consisting of the following elements:
(i) Regular inspection of all controls, including goosenecks, standpipes, standpipe caps, charging hole lids and castings, jumper pipes and air seals for cracks, misalignment or other defects and prompt implementation of the necessary repairs as soon as possible;
(ii) Maintaining the regulated area in a neat, orderly condition free of coal and coke spillage and debris;
(iii) Regular inspection of the damper system, aspiration system and collector main for cracks or leakage, and prompt implementation of the necessary repairs;
(iv) Regular inspection of the heating system and prompt implementation of the necessary repairs;
(v) Prevention of miscellaneous fugitive topside emissions;
(vi) Regular inspection and patching of over brickwork;
(vii) Maintenance of battery equipment and controls in good working order;
(viii) Maintenance and repair of coke oven doors, chuck doors, door jambs and seals; and
(ix) Repairs instituted and completed as soon as possible, including temporary repair measures instituted and completed where necessary, including but not limited to:
(A) Prevention of miscellaneous fugitive topside emissions; and
(B) Chuck door gaskets, which must be installed prior to the start of the next coking cycle.
(4) Filtered air.
(a) The employer must provide positive-pressure, temperature controlled filtered air for larry car, pusher machine, door machine, and quench car cabs.
(b) The employer must provide standby pulpits on the battery topside, at the wharf, and at the screening station, equipped with positive-pressure, temperature controlled filtered air.
(5) Emergencies. Whenever an emergency occurs, the next coking cycle may not begin until the cause of the emergency is determined and corrected, unless the employer can establish that it is necessary to initiate the next coking cycle in order to determine the cause of the emergency.
(6) Compliance program.
(a) Each employer must establish and implement a written program to reduce exposures solely by means of the engineer and work practice controls specified in subsections (2) through (4) of this section.
(b) The written program must include at least the following:
(i) A description of each coke oven operation by battery, including work force and operating crew, coking time, operating procedures and maintenance practices;
(ii) Engineer plans and other studies used to determine the controls for the coke battery;
(iii) A report of the technology considered in meeting the permissible exposure limit;
(iv) Monitoring data obtained in accordance with WAC 296-62-20007.
(v) A detailed schedule for the implementation of the engineer and work practice controls specified in subsections (2) through (4) of this section; and
(vi) Other relevant information.
(c) If, after implementing all controls required by subsections (2) through (4) of this section, or after January 20, 1980, whichever is sooner, or after completion of a new or rehabilitated battery the permissible exposure limit is still exceeded, the employer must develop a detailed written program and schedule for the implementation of any additional engineer controls and work practices necessary to reduce exposure to or below the permissible exposure limit.
(d) Written plans for such programs must be submitted, upon request, to the director, and must be available at the worksite for examination and copying by the director, and the authorized employee representative. The plans required under this subsection must be revised and updated at least every six months to reflect the current status of the program.
(7) Training in compliance procedures. The employer must incorporate all written procedures and schedules required under this section in the education and training program required under WAC 296-62-20019 and, where appropriate, post in the regulated area.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 19-01-094, § 296-62-20009, filed 12/18/18, effective 1/18/19. Statutory Authority: Chapter 49.17 RCW. WSR 88-23-054 (Order 88-25), § 296-62-20009, filed 11/14/88. Statutory Authority: RCW 49.17.040 and 49.17.050. WSR 86-16-009 (Order 86-28), § 296-62-20009, filed 7/25/86; Order 77-14, § 296-62-20009, filed 7/25/77.]
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