### SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

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- 1 ( Adopt ed May 3, 2013 )

RULE 1114 PETROLEUM REFINERY COKING OPERATIONS

(a) Purpose and Applicability
Th e purpose of this rule is to reduce emissions from atmospheric venting of coke
drums . This rule applies to all petroleum refineries equipped with delaye d coking
units.

(b) Definitions For the purpose of this rule, the following definitions shall apply: (1) COKE DRUM is a batch system pressure vessel in which petroleum coke is produced

. (2) DELAYED COKING UNIT is a petroleum refinery process unit in which high molecular weight petroleum derivatives are converted to lighter gaseous and liquid products and petroleum coke by means of thermal cracking in a series of coke drums

. A delayed coking unit consists of the
coke drums and ancillary equipment associated with a main fractionator

. (3) PETROLEUM REFINERY is a facility identified by the North American Industry Classification System Code 324110, Petroleum Refineries. (4) TURNAROUND is a planned activity involving shutdown and startup of one or several process units for the purpose of performing periodic maintenance, repair or replacement of equipment

, or installation of new equipment.

(c) Requirements (1) Effective November 1, 2013

, t he owner or operator of a delayed coking
unit shall depressurize e a ch coke dr um to less than two (2) pounds per square inch, gauge (psig) prior to venting it to atmosphere ; or ( 2 ) I f unable to comply with the provisions of paragraph (c)(1)

, the owner or operator of a delayed coking unit shall comply with the following : ( A ) A t a fac ility with a single delayed coking unit, effective May 1,
2014

, depressurize each coke drum prior to venting to atmosphere

to less than five (5) psig until compliance with paragraph (c)(1) is
achieved , which is required upon completion of the first unit

tu rnaround after May 1, 2014 or by December 31, 2016 , whichever
is earlier

.Rule 1114 (Cont.) (Adopted May 3, 2013)

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– 2 ( B ) At a facility with more than one delayed coking unit : (i) By November 1, 2013

, s ubmit to the Executive Officer : (I) For approval, a baseline calculation using general engineering practices and substantiating records that identify the facility

- wide average coke drum internal pressure at which atmospheric venting was initiated for all the coke drums during calendar year
2012

, or (II) A notification that the facility intends to depr essurize each coke drum to less than five (5) psig until achieving compliance with paragraph (c)(1) ; (i i ) Effective May 1, 2014

, until completion of the first
turnaround at an affected delayed coking unit following May 1, 2014 or by December 31, 2016

, whic hever is earlier, either : (I) D epressurize each coke drum prior to venting to atmosphere t o a pressure not to exceed, when averaged over a 30 day period for all affected
drums , 110% of the 2012 baseline submitted and approved pursuant to sub clause (c)(2)( B ) (i) (I)

, or (II) Depressurize each coke drum t o l ess than five (5) psig , pursuant to sub clause (c)(2)(B)(i) (II) ; and

, (ii i ) Effective upon resuming operations at an affected delayed coking unit following its turnaround or January 1, 2017,
whichever is earl ier, depressurize each affected coke drum

to less than 5 (five) psig prior to venting to atmosphere until compliance with paragraph (c)(1) is achieved within
the next 24 months of the earlier trigger date

. ( C ) Submit to the Executive Officer any required p ermit applications
pursuant to Regulation II for equipment and process modifications necessary to achieve compliance with subdivision (c) at least nine months prior to effective dates.Rule 1114 (Cont.) (Adopted May 3, 2013)

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– 3 (d) Monitoring and Recording
Effective November 1, 2013

, t he owner or o perator of a delayed coking unit shall: (1) Monitor the coke drum pressure and record it continuously from feed introduction until atmospheric venting is initiated, using a device calibrated at least once annually according to manufacturer’s specifications ; (2) Monitor and record continuously from feed introduction until atmospheric venting is initiated the following: (A) C oke drum atmospheric vent valve position (open or closed) or , if unable to comply with subparagraph (d)(2)(A), (B) C oke drum blowdown va lve position or the temperature of the
coke drum vent at a location downstream of the atmospheric vent valve, until achieving compliance with subparagraph (d)(2)(A)

, which is required upon completion of the first unit turnaround following November 1, 2013 or by December 31, 2016, whichever is earlier; (3) Maintain the monitoring equipment required in paragraphs (d)(1) and (d)(2) in good operating condition except for periods of downtime due to calibration, maintenance or repair, which shall not exceed 96 ho urs per calendar year per delayed coking unit, and (4) M anually record the coke drum pressure and the atmospheric vent valve position at five minute intervals covering a time period of no less than 15 minutes immediately prior to atmospheric venting during periods of downtime as specified in paragraph (d)(3). Notwithstanding the effective date in subdivision (d), the owner or operator of a facility subject to paragraph (c)(2) shall comply with the requirements in this
subdivision effective May 1, 2014

.
(e) Notification The owner or operator of a delayed coking unit shall notify the Executive Officer by telephone within 24 hours of any failure of the monitoring or recording equipment required by subdivision (d)

.
( f ) Recordkeeping
Effective November 1, 2013 , t he owner or operator of a delayed coking unit shall maintain all operational and calibration records required by subdivision (d) for atRule 1114 (Cont.) (Adopted May 3, 2013)

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– 4 least five years and shall make such records available to the Executive Officer upon request. Notwithstanding the effec tive date in subdivision ( f ), the owner or operator of a facility subject to paragraph (c)(2) shall comply with the requirements in this subdivision effective May 1, 2014

.
( g ) Exemptions Any coke drum subject to the provisions of this rule shall be exempt from the provisions of Rule 404

.