20110324Lost, Unaccounted-for Gas Report.pdf

EXECUTIVE OFFICES
INTERMOUNTAIN GAS COMPANY
555 SOUTH COLE ROAD · P.O. BOX 7608. BOISE, IDAHO 83707. [phone]. FAX: [phone]
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201f HAR 24 PH f: 28
March 25, 2011
Ms. Jean Jewell
Idaho Public Utilities Commission
472 W. Washington St.
P.O. Box 83720
Boise, 10 83720-0074
RE: Intermountain Gas Company's Semi-Annual Report pertaining to Lost and
Unaccounted for Gas
Case No. INT-G-08-03
Dear Ms. Jewell:
Attached for filing with the Idaho Public Utilties Commission are the original and seven
copies of Intermountain Gas Company's Semi-Annual Report pertaining to Lost and
Unaccounted for Gas.
Additional information pertaining to Intermountain's Lost and Unaccounted for Gas can be found
in our most recent PGA filing, or Case No. INT-G-10-03. Please reference Exhibit 9, page 1 of
1 and Workpaper NO.6.
If there are any questions regarding the attached, please contact me at [phone].
Manager, Operations Services
Enclosures
cc: K. F. Morehouse
T. M. Clark
S. W. Madison
K. Barnard
Intermountain has a standing inter-disciplinary team that reviews the LUAF audit processes
currently in place, investigates potential sources of LUAF, and takes remedial action as needed
to continue to keep Intermountain's LUAF levels low.
Intermountain's previously implemented practices are still in place and the results continue to be
monitored by members of the LUAF team. The Intermountain Gas LUAF team has not met
formally since the last report was submitted. The results of our ongoing audit activities are
outlined below.
The continuation of the audits and reporting as outlined in earlier quarterly reports provides the
following results to date:
Year
2008
2009
2010
2011 (Feb.)
Year
2007
2008
2009
2010
2011 (Feb.)
Year
2008
2009
2010
2011 (Feb.)
Check for Dead Orders
5,088
6,481
12,441
2,765
found dead
708
542
569
351
% found dead
13.00%
8.36%
4.57%
12.69%
Drive Rate errors
43
26
18
13
3
Pressure errors
15
20
19
1
Gas loss, as it is commonly referred to, is calculated as described in the April 2009 quarterly
report. A summary of findings for 2007 - 2011 (Feb.) is shown below:
2007 - 656 occurrences
2008 - 495 occurrences
2009 - 301 occurrences
2010- 175 occurrences
2011 - 11 occurrences
254,455 therms of gas loss calculated
182,920 therms of gas loss calculated
130,251 therms of gas loss calculated
88,947 therms of gas loss calculated
4,701 therms of gas loss calculated
Intermountain continues to monitor LUAF levels and looks for additional opportunities keep its
LUAF rate among the lowest in the natural gas distribution industry. As stated in earlier reports,
alterations to the billing factors, LUAF reporting, and LUAF audits have helped and will continue
to help Intermountain control the quantities and costs associated with Lost and Unaccounted for
Gas.