Interpretation Response #09-0198 ([UPS Aircraft Maintenance Hangar] [Mr. Robert A. Stewart])
Below is the interpretation response detail and a list of regulations sections applicable to this response.
Interpretation Response Details
Response Publish Date:
Company Name: UPS Aircraft Maintenance Hangar
Individual Name: Mr. Robert A. Stewart
Location State: KY Country: US
View the Interpretation Document
Response text:
December 14, 2009
Mr. Robert A. Stewart
UPS Component Shop Supervisor
UPS Hydrostatic Shop
UPS Aircraft Maintenance Hangar
750 Grade Lane
Louisville, KY 40213
Ref. No.: 09-0198
Dear Mr. Stewart:
This is in reference to your August 13, 2009 letter in which you again ask about possible tolerance requirements for the permanent expansion reading for the calibrated cylinder.
As stated in my previous responses, the cylinder requalifier must use a calibrated cylinder or other approved method to verify the accuracy of the test equipment system. When the calibrated cylinder is pressurized, the test equipment must be verified as accurate within ± 1.0% of the calibrated cylinder's pressure and the corresponding expansion value shown on the cylinder calibration certificate. When the pressure is released, this calibration process requires that the calibrated cylinder exhibit no permanent expansion as specifically stated in
§ 180.205(g)(4).
With regard to your reference to the Compressed Gas Association (CGA) C-1, currently the HMR do not incorporate the publication by reference. We may consider incorporating by reference this publication or certain provisions of the CGA C-1 publication in a future rulemaking.
I hope this information is helpful. Please contact us if you have additional questions.
Sincerely yours,
Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards
180.205(g)(4)