SCAQMD RULE 1410 HYDROGEN FLUORIDE STORAGE AND USE
LAST REVISED 04/05/91



(Adopted April 5, 1991)

RULE 1410. HYDROGEN FLUORIDE STORAGE AND USE

(a) Purpose

This rule is intended to minimize the possibility of harm to the public due to an accidental release of hydrogen fluoride.

(b) Applicability

All subsections of this rule apply to refrigerant production facilities and petroleum refineries. Any other facility which stores or uses hydrogen fluoride must comply with subparagraphs (d)(4)(A) and (d)(5) only.

(c) Definitions

(1) ALKYLATION is a process in which high-octane components for gasoline are obtained from the combination of an isoparaffin and olefins in the presence of a catalyst.

(2) ATMOSPHERIC HYDROGEN FLUORIDE DETECTION AND ALARM SYSTEM is any continuous sensor specific to hydrogen fluoride that activates a local or remote audible alarm system(s) when the concentration of hydrogen fluoride exceeds six parts per million in the ambient air.

(3) CONTAINMENT SYSTEM is any system that is designed to collect or hold, and to neutralize or treat all hydrogen fluoride and water that is required to comply with subparagraph (d)(2)(B)(iii), containing-runoff material from hydrogen fluoride loading, unloading, transfer, storage and processing equipment areas.

(4) EMERGENCY ISOLATION VALVE is any valve activated by remote control to shut off the flow of materials containing hydrogen fluoride.

(5) EVACUATION SYSTEM is any process capable of emptying substantially all hydrogen fluoride from process, storage and transfer equipment, including, but not limited to, tanks, pumps, pipes, and processing equipment.

(6) FACILITY is any collection of equipment that stores, processes, loads, unloads or transfers hydrogen fluoride, which are located on one or more contiguous properties in actual physical contact or separated solely by a public roadway or other public right-of-way, and are owned or operated by the same person (or by persons under common control).

(7) HYDROGEN FLUORIDE is anhydrous, aqueous or any organic mixture of hydrogen fluoride.

(8) HYDROGEN FLUORIDE SENSITIVE PAINT is any coating formulated to change color upon contact with hydrogen fluoride.

(9) REFRIGERANT PRODUCTION is any process in which hydrogen fluoride is used as a chemical reactant to produce chlorofluorocarbons or hydrochlorofluorocarbons.

(10) SERIOUS, NEAR WORST-CASE ACCIDENTAL RELEASE is any accidental release occurring under conditions specified in guidelines prepared by the Executive Officer. Such guidelines shall, at a minimum, specify the following conditions:

(A) Meteorology resulting in near worst-case exposure of persons in the vicinity of the release as determined through the use of the DEGADIS model, or other model determined by the Executive Officer to be equivalent, and appropriate model variables approved by the Executive Officer.

(B) A two-inch diameter opening in the hydrogen fluoride-containing equipment.

(C) No mitigation of the release by chemical or mechanical means.

(d) Requirements

(1) Phase-Out Schedule

(A) On and after January 1, 1998, an owner or operator of a refinery shall not use, store, transport, or solicit or contract for the transport of, hydrogen fluoride within the South Coast Air Quality Management District for use in an alkylation process, unless such hydrogen fluoride is contained in a mixture which upon serious, near worst-case accidental release, will not result in atmospheric concentrations equal to or greater than 20 parts per million for five minutes and 120 parts per million for one minute at or outside of the facility boundary.

(B) On and after January 1, 1999, an owner or operator of a refrigerant production facility shall not use, store, transport, or solicit or contract for the transport of, hydrogen fluoride within the South Coast Air Quality Management District for use in a refrigerant production process, unless such hydrogen fluoride is contained in a mixture which upon serious, near worst-case accidental release, will not result in atmospheric concentrations equal to or greater than 20 parts per million for five minutes and 120 parts per million for one minute at or outside of the facility boundary.

(2) Interim Control Measures

(A) On and after January 1, 1992, the owner or operator of each facility subject to subparagraphs (d)(1)(A) or (d)(1)(B) shall, in accordance with a compliance plan approved by the Executive Officer pursuant to paragraph 3, comply with the following:

(i) Maintain a facility-specific minimum hydrogen fluoride inventory;

(ii) Maintain hydrogen fluoride-sensitive paint for leak detection on all valves and flanges for pipes and vessels handling hydrogen fluoride;

(iii) Maintain emergency isolation valves operated by remote switches in the control room or in appropriately safe locations which are accessible to use during hydrogen fluoride releases;

(iv) Operate and maintain automatic atmospheric hydrogen fluoride detection and alarm systems in all hydrogen fluoride loading, unloading, transfer, storage and processing areas, and utilize an approved on-site remote terminal unit (RTU) that is linked to the South Coast Air Quality Management District and capable of linkage to local city and county fire departments, in accordance with SCAQMD-RTU-0001;

(v) Maintain safety devices and use procedures to neutralize accidental releases;

(vi) Maintain control room-detectable audible and visual alarm systems to eyewashes and safety showers in all areas where hydrogen fluoride is present;

(vii) Maintain direct supervision of all maintenance and technical support personnel and laborers of the owner or operator when they work within the hydrogen fluoride unit boundaries or on equipment directly related to the operation of the hydrogen fluoride unit, and, whenever a contractor has personnel working on the HF unit or on equipment directly related to the operation of the HF unit, maintain an individual or individuals, at or about the hydrogen fluoride unit, trained in hydrogen fluoride safety procedures, whose duties include determining the continued safe status of the hydrogen fluoride unit, and who have the authority to take such actions deemed reasonably necessary to carry out such duties;

(viii) Administer job-specific safety training for all maintenance and technical support personnel and laborers of the owner or operator, and require contractors to administer job and site-specific safety training in advance, as approved by the owner or operator of the facility, to their personnel and laborers, which includes written and walk-through performance examinations, and require contractors to maintain written records documenting such training; and

(ix) Ensure that all hydrogen fluoride loading and unloading operations, including hydrogen fluoride transport vehicle loading and unloading, are administered within the presence of a facility-trained operator.

(B) On and after January 1, 1993, the owner or operator of each facility subject to subparagraphs (d)(1)(A) or (d)(1)(B) shall, in accordance with a compliance plan approved by the Executive Officer pursuant to paragraph 3, comply with the following:

(i) Maintain containment systems;

(ii) Maintain facility-specific automated evacuation systems;

(iii) Maintain facility-specific automated water spray systems or an Executive Officer approved alternative in the hydrogen fluoride loading, unloading, transfer, storage and processing areas that are designed to achieve, at a minimum, hydrogen fluoride removal efficiency of 90 percent; or an equivalent method, as approved by the Executive Officer; and

(iv) Ensure facility-specific seismic upgrade of support structures for all hydrogen fluoride-related process equipment, including, but not limited to, vessels, heat exchangers, fired heaters, pumps, storage tanks, and piping, as specified in the 1988 Uniform Building Code, Section 2312.

(3) Compliance Plans

(A) Phase-out

(i) On or before July 1, 1991, and on or before July 1 of each subsequent year, the owner or operator of any facility subject to subparagraph (d)(1)(A) or (d)(1)(B) shall provide the Executive Officer with an annual report which describes the specific steps that are being taken to comply with subparagraph (d)(1)(A) or (d)(1)(B). For each compliance method under consideration, the annual report shall:

(I) Identify the method that is under evaluation;

(II) Provide a timetable indicating each major stage of research and development, and the status of such research and development;

(III) Provide an evaluation of the commercial viability as compared with all the other alternative methods under research and development; and

(IV) Indicate the final dates of expected commercial use for each alternative method.

(ii) On or before January 1, 1995, the owner or operator of any facility subject to subparagraph (d)(1)(A) or (d)(1)(B) shall submit a compliance plan to the Executive Officer which describes the final action that will be taken to comply with subparagraph (d)(1)(A) or (d)(1)(B). Such a compliance plan shall include all necessary applications for permits to construct. The Executive Officer shall approve or deny the plan, and may approve a plan subject to conditions. The Executive Officer shall deny plan approval unless the applicant demonstrates that the plan will comply with all applicable provisions of this rule. The approved plan shall be subject to Rule 221.

(B) Interim Control Measures

The owner or operator of any facility subject to subparagraphs (d)(1)(A) or (d)(1)(B) shall comply with the following increments of progress:

(i) On or before July 1, 1991, submit an interim control measure compliance plan to the Executive Officer which demonstrates how compliance will be achieved with subparagraphs (d)(2)(A) and (d)(2)(B). The Executive Officer shall approve or deny the plan, and may approve a plan subject to conditions. The Executive Officer shall deny plan approval unless the applicant demonstrates that the plan will comply with all applicable provisions of this rule. The approved plan shall be subject to Rule 221.

(ii) On or before August 1, 1991, or 30 days after the approval of the compliance plan, whichever is later, submit any required applications for permits to construct and operate necessary to comply with subparagraph (d)(2)(A);

(iii) On or before January 1, 1992, or 30 days after the approval of the compliance plan, whichever is later, submit any required applications for permits to construct and operate necessary to comply with subparagraph (d)(2)(B);

(4) Notification of a Hydrogen Fluoride Release

(A) On or after July 1, 1991, an owner or operator shall report to the Executive Officer any hydrogen fluoride release that results in exposed persons requiring medical treatment at an off-site facility, evacuation of any portion of the facility premises, or aerosol hydrogen fluoride transport beyond the facility property boundaries. Such a report shall be made within one hour of the time the release is known or reasonably should have been known to any employee, officer or agent of the owner or operator, and shall include, to the extent known, the following information.

(i) Name and specific location of the facility;

(ii) Identification of the notifier, including individual's name and title;

(iii) Cause of the release;

(iv) Extent of the release, include approximate amount, concentration, and area affected;

(v) Specific location of the release;

(vi) Specific equipment involved in the release;

(vii) Any and all measures taken to mitigate or stop the release, including, but not limited to, repairs;

(viii) Complete description, to the extent known, and number of any injuries or fatalities; and

(ix) Names of other agencies notified of the release, the time of notification, and the name of the person notified.

Within ten working days after the initial notification of the release, the owner, operator or their designee shall submit a follow-up written report to the Executive Officer. The written report shall include the same information as presented in the initial notification together with any related information discovered after the initial notification.

(B) On and after January 1, 1992, an owner or operator of each facility subject to subparagraph (d)(2)(A)(iv), shall, upon the alarm of an hydrogen fluoride sensor at the facility, notify the Executive Officer within fifteen minutes of the alarm and provide the

information, to extent known, requested in subparagraph (d)(4)(A). Within ten working days after the initial notification of the release, the owner or operator shall submit a follow-up written report to the Executive Officer.

(5) Hydrogen Fluoride Storage and Usage Report

On or before July 1, 1992, and July 1 of each subsequent year, all facilities that store or use hydrogen fluoride shall submit, to the Executive Officer, a hydrogen fluoride inventory report describing quantities stored and used during the previous calendar year. Such an inventory shall include the following information:

(A) Name of company, telephone and address;

(B) Company identification and applicable equipment permit numbers, as administered by the South Coast Air Quality Management District

(C) Name and title of the person conducting the inventory;

(D) Name and address of the manufacturer or distributor of the hydrogen fluoride;

(E) Brief description of process and/or equipment using the hydrogen fluoride;

(F) Total annual quantity of hydrogen fluoride received, in gallons;

(G) Size and frequency of deliveries and mode of transport;

(H) Concentration of hydrogen fluoride:

(i) acid concentration for each process or piece of equipment;

(ii) acid concentration as received and in storage.

(I) Total quantity of hydrogen fluoride used annually, per specified process or piece of equipment, in gallons; and

(J) Description of the type of storage and the maximum and average quantities, at any one time, of hydrogen fluoride within possession or control of the owner or operator of the facility in:

(i) Fixed or mobile storage containers on-site; and

(ii) Fixed or mobile storage at other locations within the South Coast Air Quality Management District.

(e) Exemptions

(1) Paragraph (d)(5) of this rule shall not apply to any facility which does not store, transport or use anhydrous hydrogen fluoride and which stores, transports and/or uses aqueous hydrogen fluoride exclusively solutions in concentrations less than or equal to 50 percent by weight.

(2) Paragraph (d)(5) of this rule shall not apply to any facility which stores, transports and/or uses less than or equal to one (1) gallon of anhydrous hydrogen fluoride, at any one time.