Meeting Minutes CELE Meeting, Fall 2007 Hyatt Regency Hotel, Atlanta, Georgia Tuesday, October 23, 2007-3:00 PM 5:00 PM 1. Introductions and Opening remarks from the members All present See sign-in sheets for attendance. 2. Roll Call to determine quorum P. Watkins Quorum achieved. 3. Review of Agenda, Amendments to the Agenda from the floor Chairman/P. Watkins Approved without modification. 4. Approval of previous meeting minutes Chairman/P. Watkins The minutes from the meeting held on March 20, 2007, were approved. 5. Discussion of old/continuing business/action items: Brief update, member input and resolution/go forward plan for pending issues 5.1 Update on Liquid Surface Temperature Study R. Ferry/G. Morovich Meteorological and bulk liquid temperature data is being collected. A preliminary review of the data will not be available until after the March 2008 meeting so that at least a full year of data is collected and analyzed. 5.2 Finalization of TR on Non-freely vented IFR tanks All present G. Morovich reported that the API tanks committee (SCAST) had provided positive feedback on the document. It was noted that the document provides a useful perspective on the limitation of achievable incremental emission reduction using closed vents vs. open vents on IFR tanks. J. Siegell had provided comments to R. Ferry on the draft dated September 14, 2007 (circulated to the group via e-mail on September 17, 2007). After discussion, it was agreed these comments would be incorporated into the draft, and the document would be progressed to publication. Action item: After incorporation of the comments submitted by J. Siegell, the updated draft on non-freely vented IFR tanks will be progressed to publication as an API Technical Report.
5.3 Proposed modifications to Ch. 19.2 in light of the TR on Non-freely vented IFR TANKS All present There was discussion about balloting an Addendum to Ch. 19.2. It was agreed to table this issue at the present time and to discuss it again at the March 2008 meeting. 5.4 Results of ballot to include a solar absorptance factor for black in Ch. 19.1 P. Watkins The ballot item was approved. The Addendum will be incorporated in to Ch. 19.1. Action item: The approved Addendum containing the updated table for solar absorptance factors will be published and incorporated into Ch. 19.1. 5.5 Proposed modification to Ch. 19.2 and Ch. 19.4 to incorporate updated table of solar absorptance factors R. Ferry/P. Watkins It was agreed that Ch. 19.4 would not be modified at this time. It was agreed that the proposed modifications to Ch. 19.2 to incorporate the updated table of solar absorptance factors approved for Ch. 19.1, and the other suggestions to the methodology outlined by R. Ferry, would be prepared ready for ballot, but that an analysis on the impact of these modifications would be carried out first and reported back to the group. Action item: P. Watkins to prepare the proposed modifications to Ch. 19.2 ready for ballot. R. Ferry to carry out an analysis of the impact of these modifications and to send the analysis to P. Watkins for distribution to CELE. 5.6 Update on publication of TR on Evaporative Loss from the Cleaning of Storage Tanks P. Watkins Action item: A. Naik will provide feedback by December 15, 2007 on the latest proofs so that the TR can be progressed to publication.
5.7 Review of methodology for E&P TANK software for Publ. 4697 Production Tank Emissions Model All present Action item: CELE Chairman to discuss with the CAIG Chairman to determine whether CAIG has the technical capability to maintain and update Publ. 4697, and to explore whether CELE should assume responsibility for this publication. Wednesday, October 24, 2007-8:30 AM 12:00 PM 5.8 Revision of Publ. 2514A i. Response from CAIG members on data on methane in crude oils when loading vessels P. Watkins There had been no response from CAIG members. The ongoing marine loading emissions study will also include an analysis of methane in crude oils. ii. Potential coordination with LASTFIRE G. Morovich Action item: G. Morovich to discuss potential coordination of CELE activities with LASTFIRE representatives at the API Above Ground Storage Tanks meeting to be held next month. This issue will be placed on the agenda for the next CELE conference call. G. Morovich to provide a copy of the LASTFIRE presentation to P. Watkins for distribution to CELE. iii. Feedback on EI proposals to extend the revision of Publ.2514A to in-transit losses/funding All present There is interest in extending the scope of 2514A to in-transit losses, but it was agreed to focus on updating the existing Publication at the present time. Action item: B. Nicholls and P. Harrison to approach IMO to determine interest in expanding Publ. 2514A to include in-transit losses. iv. Review of first draft of reorganization of Publ. 2514A All present R. Ferry responded to queries from A. Naik and J. Siegell about the draft.
Action item: Further feedback on the first review draft of the reorganization of Publ. 2514A is requested by November 30, 2007. Additional measurements need to be carried out to validate the existing sturation factors. Locations need to be identified for participation in the study and the technical details of taking the measurements determined. R. Ferry discussed the correspondence he had had with O. Oldervik and P. Harrison regarding this issue. Portable GCs and dataloggers are being reviewed as possible equipment suitable for carrying out this work. It was suggested that 3 crude oils and 3 products with various loading scenarios would be an appropriate range of test materials. Action item: CELE requests O. Oldervik and R. Ferry, in consultation with P. Harrison, to collaboratively prepare a proposal on what equipment should be used and the process by which the measurements will be taken for the revision of Publ. 2514A. The proposal should be made available prior to the March 11-12, 2008, for distribution to the group for review. Existing studies were discussed as source of additional data. Action item: B. Nicholls to pursue copies of the BP Houndpoint report and Crucogsa study to pass onto R. Ferry for review and analysis. 5.9 CELE terms and definitions in MPMS Ch. 1 Vocabulary Review of changes suggested by W. Williamson to determine if errata or addenda should be issued to CELE standards All present The changes suggested by W. Williamson were discussed. See Annex A attached. Action item: Errata will be issued to the appropriate CELE standards so that the definition for "standing storage loss" is clarified, and COMET informed of the modification. 5.10 Ch. 19.3 reaffirmations i. Results of ballot to reaffirm Part C P. Watkins Reaffirmation was approved. Ch. 19.3 Part C will have an October 2007 reaffirmation date.
ii. Reaffirmation ballots for Parts D and E P. Watkins Action item: Ch. 19.3 Parts D and E will be balloted for reaffirmation following the COPM conference. iii. Determination of action to take on Parts F and G All present It was agreed to incorporate the relevant sections of Parts F and G into Part H with a view to ultimately eliminating Parts F and G. The SR3 already prepared to revise Part H will be updated accordingly (see agenda item 5.10 iv), and a request submitted to COPM to extend the effective date of Parts F and G for a further two years. iv. Review of SR3 to revise Part H for CELE approval All present The SR3 prepared by A. Naik was reviewed and modified based on decisions made at the meeting. The modified SR3 was approved by CELE. Action item: The modified SR3 for 19.3 Part H will be submitted to COPM. 6. EPA Report: 6.1 Funding of upgrades to TANKS software M. Ciolek EPA is trying to budget accordingly to provide upgrades to TANKS software. Options are being reviewed as to how this might be achieved. 6.2 Texas study of DIAL technology M. Ciolek/J. Siegell (SSETF Chairman) EPA will be gathering data at 3 locations including fence-line monitoring for hourly emission estimates using Dial. This work is being carried out with a view to ultimately upgrading AP- 42 and the TANKS software for hourly and short term emission rates. 6.3 Review of documentation re: EPA query on honeycomb roof design All present It was reiterated that a 3 rd party independent review was advised on the roof design. P. Watkins gave an update on the API witnessing program that was being developed for API MPMS Ch. 22 Testing Protocols. Action item: CELE asked API staff to provide a presentation at the March 2008 meeting on API certification programs.
7. Discussion of New Business items: Brief update, member input and resolution/go forward plan for pending issues 7.1 Participation in API's Heavy Oil Study All present 2-3 potential sources for samples have been identified. Action item: A revised proposal from the consultant was requested to address the cost increase if more samples than originally proposed (3) were made available for testing. 7.2 Guidance on estimating emissions from poorly fitting or damaged seals R. Ferry/M. Ciolek R. Ferry explained how emission factors had been developed based on data gathered on different types of seals, although the fit of the seal had only been taken into account by averaging the gap area of rim seals. It was noted that the existing data did not support expressing emission factor as a function of gap size. Action item: R. Ferry was requested to provide a proposal to address the impact of rim seal gap area on emissions to reflect conditions not incorporated in current rim seal loss factors. 7.3 Any member to bring up new business for CELE consideration/discussion Kimber Hamilton has agreed to become CELE Chairman, succeeding A. Naik, immediately following this meeting. CELE expressed its appreciation to A. Naik for his long service as CELE Chairman. Terri Stilwell agreed to discuss with her management the possibility of becoming Vice Chairman. 8. Action item review and schedule for next two conference calls before the Spring 2008 meeting P. Watkins Conference calls: Tuesday, 11 December 2007, 2pm EST Tuesday, 5 February 2008, 2pm EST Next face to face meeting: Tuesday, 11 March 2008, 3-5 PM and Wednesday, 12 March 2008, 8:30AM 12 PM, InterContinental Dallas Hotel. 9. Wrap-Up and Adjournment The meeting adjourned at 11.50AM. Reviewed by API Office of General Counsel
Annex A CELE Terms & Definitions w/ch, in alphabetical order Word/Phrase Definition Chapter API Ref# ACT Facility Air Concentration Test (ACT) Method API Certification Petition Certification Process Certification Process Certification Program Certified Loss Factor Control of the Testing Facility Covered Floating-roof Tank The entire facility used in the Air Concentration Test (ACT) method. The Act facility includes the test chamber, the sensors and data acquisition system, the air blower, the air inlet and outlet ducts, and the test liquid storage. The test method used to establish evaporative rim-seam loss factors for rim seals used on external, covered, and internal floating-roof tanks that involves passing a controlled flow rate of air through a test chamber that contains a test liquid and a test rim seal, and measuring the concentration of the test liquid vapor in the air streams entering and leaving the test chamber. As used in this standard is taken to mean the staff of the American Petroleum Institute responsible for the oversight and coordination of the certified evaporative loss factor testing programs. The documentation of test results submitted to API by a petitioner for the purpose of applying for a certified loss factor for a given device. Process that the petitioner goes through to obtain an API certified loss factor for a given device The process through which the petitioner goes through to obtain an API approved loss factor for a given device The API Tank Seals and Fittings Certification Program, by which petitioners may have the evaporative loss factors of proprietary floating-roof devices measured by laboratories that are registered with API for that purpose; and the review by API, at the petitioner's discretion, of a certification petition for approval and publication of a certified loss factor. Loss Factor that has been obtained using API approved testing procedures for which the testing has been reviewed and approved by API. Refers to ownership or directors' voting rights of the testing facility greater that 20 percent or the ability to place or replace the management of the testing facility. A floating-roof tank that has both a fixed roof at the top of the tank shell, and an externaltype of floating roof designed in accordance with Appendix C of the API std 650 (3). The CFRT's are thus distinguished from external floating -roof tanks (EFRT's) which do not have a fixed roof, and internal floating roof tanks (IFRT's), which have a fixed roof but have a lighter type of floating roof (designed in accordance with Appendix H of API std. 650) [3]. The CFRT's are described in more detail in Ch.19.2.8.2.3. 19.3b 13 19.3b 18 28 19.3b 111 19.3f 113 114 19.3b 112 119 158 19.3b. 19.3d 170
Word/Phrase Definition Chapter API Ref# Data Acquisition Data Acquisition Systems (DAS) Deck Deck Fitting Deck Joint The process of receiving signals from the sensors, determining the values corresponding to the signals, and recording the results. The equipment used and process of receiving signals from sensors, determining the values corresponding to the signals, and recording the results. That part of floating roof that provides buoyancy and structure and that covers the majority of the liquid surface in a floating-roof tank. The deck has an annular space around the perimeter to allow it to rise and descend (as the tank is filled and emptied) without binding against the tank shell. This annular space is closed by a flexible device called a rim seal. The deck also may have penetrations, closed by fittings, which accommodate some functional or operational feature of the tank. Typical deck constructions are described in Ch. 19.2.8.1.2 A device that substantially closes or seals a penetration in the deck of a floating-roof tank. Such penetrations are typically for the purpose of accommodating some functional or operational feature of the tank. Typical deck fittings are described in Ch. 19.2.8.1.4 The construction feature of a floating roof pertaining to the intersection of one deck seam with another deck seam or pertaining to the intersection of a deck seam with the rim of the floating roof. Mechanically-joined deck seams typically incorporate deck joints at locations where the deck seams intersect each other or intersect the rim of the floating roof. These deck joint locations have an associated deck joint loss that is separate from the deck seam loss. Walt Williamson: I found this definition very confusing when looking at the definition for Deck Seam. Should I be looking for a separate loss factor for a deck joint and another loss factor for deck seam? Is the deck joint loss factor incorporated into the deck seam factor? CELE response: Agreed that the standard itself requires revision. Annex A 189 19.3d 184 199 200 19.3d 204
Annex A Word/Phrase Definition Chapter API Ref# Deck Seam Device The joint attaching adjacent sheets or panels in the floating deck. Certain types of internal floating-roof decks are constructed of sheets or panels that are joined by mechanical means, such as by bolting or clamping. Such mechanically-joined deck seams have an associated deck-seam loss. Other types of internal floating-roof decks, and virtually all external floating-roof decks, are constructed of metal sheets that are joined by welding. Such deck seams do not have an associated deck-seam loss. Deck seams are described in more detail in Ch. 19.2.8.1.5. Element attached to or incorporated in an internal or external floating roof tank where evaporative losses are possible. Device Specific Characteristics of a unique device Equipment External Floating-roof Tank Facility FET Test Facility Walt Williamson Comment: This was also confusing because of the definition of facility. The physical hardware, computer software, or calculation tools used to perform evaporative loss tests, data collection or calculations under this standard. A floating-roof tank that does not have a fixed roof at the top of the shell and is exposed to ambient environmental conditions. The EFRT's are thus distinguished from internal floating-roof tanks (IFRT's) and covered floating-roof tanks (CFRT's), both of which do have a fixed roofs to protect the floating roofs from environmental loads. External floating roofs are typically designed in accordance with Appendix C of API Std. 650 [3]. The EFRT's are described in more detail in Ch.19.2.8.2.1. The person(s), corporate entity, or collection of equipment that is certified or proposed to be certified under this standard. The facility does not include those operations not associated with the evaporative loss testing for the purpose of certification by API. Walt Williamson: Comment, there is no way I can stretch the definition of facility to mean a person or corporate entity. Maybe a separate definition is needed for person or corporate entity but they are not facilities. CELE response: Parts F and G will ultimately be incorporated into Part H as appropriate, and this term is likely to be deleted. The entire facility used in the fugitive emission test (FET) method. The FET facility includes: the test pan; the test enclosure; the pressure and temperature sensors; the data acquisition system; the sample and dilution air pumps; the total hydrocarbon analyzers; the flow meters; and the associated flow tubing. CELE response: Parts F and G will ultimately be incorporated into Part H as appropriate, and this term is likely to be deleted., 19.h 201 231 232 274 19.3d 285 289 19.3d 294 Formatted: Strikethrough
Word/Phrase Definition Chapter API Ref# Floating -roof Floating-roof Tank Fugitive Emission Test Method Indicator A device that floats on the surface of the stored liquid in a floating-roof tank. A floating roof substantially covers the liquid product surface, thereby reducing its potential for exposure to evaporation. Floating roofs are comprised of a deck, a rim seal, and miscellaneous deck fittings. A vessel for storing bulk liquids, having a vertical cylindrical shell and also having a floating roof that rests on the stored liquid. A floating-roof tank may additionally have a fixed roof attached to the top of the tank shell. Floating-roof tanks are described in more detail in Ch. 19.2.8.2. See also "Internal Floating Roof Tank" and "External Floating Roof Tank" The test method used to establish evaporative deck-seam loss factors and deck-joint loss factors for mechanically-joined deck seams that are used on internal floating -roof tanks. The fugitive emission test (FET) method involves passing a controlled flow rate of air through a test enclosure that is sealed to the top deck of a test pan over a test deck seam or over a test deck joint. The test pan contains a volatile hydrocarbon test liquid. The total hydrocarbon concentration in the air that enters and in the air that leaves the test enclosure is measured, along with the flow rate of the air leaving the test enclosure, at specified pressure differences across the test deck seam or test deck joint. An instrument that displays or records signals received from a sensor. The indicator is typically constructed to express the signal in units that are useful to describe the observed value of measurement. For example, an electronic signal may be received by the indicator as volts, but then displayed as pounds. An indicator may be incorporated into an electronic data acquisition system. An electronic data acquisition system typically has the capability to be pre-programmed to record data at prescribed intervals, to analyze the data that has been received, and to electronically store the results. 19.3f Annex A 313 19.2 314 19.3d 335 19.3e Instrument A device used in the measurement process to sense, transmit, or record observations. 407 421
Word/Phrase Definition Chapter API Ref# Internal Floating-roof Tank Laboratory Loss Factor Modifications A floating-roof tank that has a fixed roof at the top of the tank shell, and a lightweight floating roof designed in accordance with Appendix H of the API Std. 653 [3]. Internal floating-roof tanks are thus distinguished from external floating-roof tanks and covered floating-roof tanks, both of which have the heavier type of floating roof (designed in accordance with Appendix C of API Std. 6500 [3]. Some deck fittings, such as deck legs, may more closely resemble the construction typical of API Std. 650, Appendix C-type decks [3]. Judgement should be used in determining the appropriate loss factor for a specific deck fitting. Internal floating-roof tanks are described in more detail in Ch. 19.2.8.2.2. Used interchangeably to mean facility Walt Williamson Comment: Laboratory should not be used interchangeably with facility and it needs its own definition. I assume you are trying to certify laboratory equipment. CELE response: Parts F and G will ultimately be incorporated into Part H as appropriate, and this term is likely to be deleted. Factor that indicates the average amount of evaporation loss associated with a device. In order to obtain the total standing storage evaporative-loss rate for a floating-roof tank, the sum of the evaporative-loss factors for each of the individual devices is modified by certain characteristics of both climate conditions and the stored liquid. The characteristics of the stored liquid are expressed as a vapor pressure function, the stock vapor molecular weight, and a product factor. Loss factors for typical floating-roof equipment are presented in Ch. 19.2.5.2. Changes to the equipment after API inspection and certification that influence the operation, measurement, data collection, or calculation aspects of the evaporative loss testing. Specifically excluded from this definition are cosmetic or maintenance operations such as exterior painting, replacement-in-kind, electrical power wiring, or ergonomic equipment that does not impact outcome of any test. MPMS Manual of Petroleum Measurement Standards 19.3e, Petitioner Party who seeks to obtain API approval for a loss factor for a given device., Annex A 429 446 478 550 559 620
Word/Phrase Definition Chapter API Ref# Product Factor A factor that describes the evaporative-loss characteristics of a given liquid. The product factor, the stock vapor molecular weight, and the vapor pressure function are multiplied by the sum of the floating-roof loss factors to determine the total standing storage evaporative-loss rate of a floating-roof tank. Product factors are presented in Ch. 19.2.5.3.3 Proposed Device Device for which the petitioner seeks a certified loss factor Protocol Test Review Rim Seal Rim-seal Gap Area Sensor Standard Devices A test performed in accordance with the API approved and published standards and procedures as applicable and performed by an API-certified testing laboratory. Analysis by API of loss factor data obtained using the API test procedure for a given device A flexible device on a floating roof that closes the annular space between the deck and the tank shell. When a floating roof has two such devices, one mounted above the other, the lower is the primary seal and the upper in the secondary seal. Effective rim seals close the annular rim space, accommodate irregularities between the floating roof and the tank shell, and help to center the floating roof, yet permit normal floating roof movement. Typical rim-seal systems are described in Ch.19.2 8.1.3. The total cumulative horizontal area of all spaces or openings between the rim seal and the tank shell that provide an unobstructed path for a 0.125-inch diameter probe to pass freely from a position above the rim seal down to the stored product. An instrument that senses the attribute or measurement information that is to be obtained in a measurement process. This information is then transmitted to the indicator to be displayed or recorded. Devices that have been previously tested and certified or tested by API under earlier testing programs. The API shall designate which devices shall be considered standard devices for particular situations.. 19.3b Annex A 650 663 666 742 745 747 19.3e 801 837
Annex A Word/Phrase Definition Chapter API Ref# Standing Storage Loss Loss of stored stock liquid by evaporation past the floating roof during normal service conditions. periods when the tank is not being filled or emptied. Thisnot includes evaporative losses from the rim seal, deck seams, and deck fittings. The standing storage loss equation is presented in Ch. 19.2 4.2. ThisIt does not include evaporation of liquid that clings to the tank shell (and fixed-roof support columns, if any) and is exposed to evaporation when the tank is being emptied (withdrawal loss). Nor does it include vapor loss that may occur when the liquid level is sufficiently low so as to allow the floating roof to rest on its support legs. This does not include, however, evaporative losses from the rime seal, deck seams, and deck fittings The standing storage loss equation is presented in Ch. 19.2 4.2. CELE response: The definition should be modified as indicated. Errata will be issued to the appropriate CELE standards so that the definition for "standing storage loss" is clarified, and COMET informed of the modification. Test Chamber The portion of the ACT facility that contains the test rim seal and the test liquid 19.3b 909 Test Enclosure The portion of the FET facility that covers the test deck seam or test deck joint and is sealed to the top deck of the test pan. 19.3a. 840 19.3d 908 Testing Laboratory An API approved facility that analyzes the loss factor for a given device 912 Testing Process Vapor Pressure Function Weight Loss Test Method Withdrawal Loss An API approved procedure the petitioner uses to determine the loss factor for a given device. A dimensionless factor used in the loss estimation procedure, that is a function of the ratio of the vapor pressure of the stored liquid to average atmospheric pressure at the storage location. The vapor pressure function, the stock vapor molecular weight, and the product factor are multiplied by the sum of the equipment loss factors to determine the total standing storage evaporative-loss rate of a floating-roof tank. The vapor pressure function is presented in Ch. 19.2.5.3.1. The method of determining a loss factor by measuring the weight loss of a test assembly over time as test liquid evaporates from the test assembly Loss by evaporation of the liquid that clings to the tank shell (and fixed-roof support columns, if any) and is exposed to evaporation when the tank is being emptied (withdrawal loss). The withdrawal loss equation is presented in Ch. 19.2.4.3. 19.3f 910 973 19.3c 1002 19.2 1008 Formatted: Strikethrough