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ENERGY RESOURCES CONSERVATION BOARD
Calgary Alberta
Informational Letter Zj- y IL 81-13
TO:
All Oil and Gas Operators
NOx EMISSIONS - GAS PLANTS AND GAS BATTERIES
The Board has agreed to assist the Kananaskis Centre for Environmental Research of the University of Calgary in collecting information on the sources and quantities of NO^ emissions in the province to be used in a study of the potential environmental effects of NO^ emissions. The study would include tjie evaluation of the role of mathematical models currently used to predict emission levels and to determine the relationship between predicted emission levels and actual field conditions. Experimental sites will be chosen for the study and will be distributed throughout the major ecological zones of Alberta to cover widely diverse biological and climatic conditions. The study has been commissioned by the Alberta Government with the support of the oil and gas industry.
Accordingly, the Board requests operators of compressors located at gas processing plants and gas batteries to complete the attached questionnaire for each compressor location, or where appropriate, for each group of compressors and return it to the Board's Gas Department not later than 12 June 1981.
H. J. Webber
Manager, Gas Department
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littps://archive.org/details/energyresources19811314
m 1 1 1981
ENERGY RESOURCES CONSERVATION BOARD Calgary Alberta
Informational Letter IL 81-14
TO: All Pipeline Operators
INDIRECT FIRED HEATER COILS FOR PIPELINE SERVICE
In July of 1979 the Energy Resources Conservation Board (Board) issued Informational Letter IL 79-17, outlining the requirements for design of indirect fired heater coils for pipeline service, and the arrangements made with Alberta Labour (Boilers* Branch). The intent was to permit design, construction, and inspection of heaters for pipeline service in accordance with CSA Z184-1975, "Gas Pipeline Systems".
After reviewing the operation of the policy with the Boilers' Branch, the Board has decided to amend IL 79-17 to clarify the policy. Indirect fired heater coils will be classified into three categories and the details and design requirements of each category are indicated in this informational letter.
Informational Letter IL 79-17 is hereby rescinded.
GENERAL REQUIREMENTS
Manufacturers of indirect fired heater coils shall have a quality control system acceptable to the Board for all categories. Manufacturing shops having Boilers' Branch approval satisfy this requirement.
The Board's Pipeline Department will assess material specifications for heater coils to see that they conform to the appropriate ASTM or CSA standards. Proof of low temperature properties will be required unless the factors making such properties necessary are eliminated by system design.
2
Should the material specifications be satisfactory, (along with other pertinent pipeline matters) , the Board will subsequently issue a pipeline permit which will include the heater coils.
CATEGORY 1
Indirect Fired Heater Coils for Pipelines or Plants Registration Required
Indirect fired heater coils in this category shall be used for normal pipeline operations and may also be utilized in plants. Operators shall design Category 1 heater coils to:
1 ANSI Code B31.3, "Chemical Plant and Petroleum Refinery Piping" for appropriate stress levels, and
2 CSA Z184-M1979, "Gas Pipeline Systems", for material specifications; in particular, adequate steel ductility at low temperatures.
Prior to shop fabrication, the design and welding procedure for Category 1
coils must be registered with the Boilers* Branch. If the coils are to
be used in sour service, this should be noted in the design specifications.
Category 1 heater coils will be inspected by Boilers' Branch personnel during their regular shop inspections. It is essential that the heater coil designs be registered with the Boilers' Branch, and that the shop inspector have sufficient information to enable him to check coil construction as required under "The Boilers Act".
Nameplate information for Category 1 heaters shall include:
1 Manufacturer's name , serial number, and Canadian Registration number ,
2 Design pressure and temperature,
3 Material specifications,
4 Any nondestructive examinations (RT-UT) ,
5 Any heat treatment (HT) ,
6 Any impact testing (IT),
7 Date of construction, and
8 Boilers' Branch identification number preceded by the circled letter "A".
3
CATEGORY 2
Indirect Fired Heater Coils for Special Pipeline Applications No Registration Required
The Board will consider applications for permits to construct pipelines with Category 2 indirect fired heater coils only in those instances where Category 1 indirect fired heater coils are not practical.
Although heat exchangers are not included in the scope of CSA Z184, "Gas Pipeline Systems", heater coils for pipeline systems in this special category may be designed solely to CSA Z184. Temperature derating of the allowable operating stress levels for the heater coils and associated flanges shall be as indicated in CSA Z184.
These heaters will be licensed as part of a pipeline and the material specifications must conform to the appropriate ASTM or CSA Standard. Design registration and inspection by the Boilers* Branch is not applicable .
Category 2 pipeline heater coils shall be inspected (by a third party other than the Boilers* Branch) as part of the pipeline system in accordance with CSA Z184 and the Pipeline Regulations. The duration of the shop hydrostatic test for Category 2 heater coils shall be maintained for a sufficient time to determine if there are any leaks, but not less than 10 minutes. Pressure test results and/or manufacturer's specification and inspection sheets for coils shall be forwarded to the Board's Pipeline Department for approval.
The Canadian registration number and the Boilers' Branch identification number preceded by the circled letter "A" will not be required on the nameplate for Category 2 heater coils.
CATEGORY 3
Indirect Fired Heater Coils for Plants Only Registration Required
Coils for plant use only shall conform to the latest edition of the ANSI Code B31.3, "Chemical Plant and Petroleum Refinery Piping". Heater coils in this category shall be registered with and inspected by the Boilers' Branch. Nameplate information shall be the same as in Category 1 heater coils.
4
These procedures will take effect iimnediately , and, should further information be required, you should contact either the Board^s Pipeline Department, or the Boilers* Branch, General Safety Services Division.
ISSUED at Calgary, Alberta, on 2 June 1981.
ENERGY RESOURCES CONSERVATION BOARD
V. E. Bohme, P. Eng.
Board Member