New Zealand Gazette – 2000 – No. 159

Page 4102

✨ Gas Transmission Performance Measures

4102
NEW ZEALAND GAZETTE
No. 159

System	Gas Into System, a (GJ p.a.)	Max. Monthly Quantity, b (GJ/mth)	Load Factor, a × 100 / 12 × b	Gas Into System, a (GJ p.a.)	Max. Monthly Quantity, b (GJ/mth)	Load Factor, a × 100 / 12 × b
North & Central	22,687,600	2,262,940	83.6	21,082,652	2,069,360	84.9
North	8,765,941	825,083	88.5	5,740,248	625,900	76.43
Bay of Plenty	11,283,386	1,224,947	76.8	10,810,824	1,016,123	88.7
Frankley Rd - Kapuni	14,744,666	2,013,880	61.0	12,004,052	1,527,554	65.5
South	10,593,321	1,204,330	73.3	11,634,630	1,300,580	74.6

3.2 Unaccounted-for gas ratio

System	2000		1999
	Unaccounted For Gas a (GJ p.a.)	Gas Into System b (GJ p.a.)	Unaccounted For Gas a (GJ p.a.)	Gas Into System b (GJ p.a.)
North & Central			(407,463)	27,565,731
North	(288,671)	41,869,514
Central	323,637	9,318,902
Bay of Plenty	32,853	11,852,566	(180,121)	11,605,971
Frankley Rd – Kapuni	(251,633)	25,934,596	280,691	30,528,389
South	144,283	10,862,614	(115,148)	9,998,616

NB: UFG = Receipts + (Initial Linepack - Final Linepack) - Deliveries - Gas Used in Transmission.
The unexpectedly high UFG figure for the Central System is believed to be due to problems with check metering,
particularly at the new interconnection to the Bay of Plenty System, rather than with custody-transfer metering.
Under measurement may also have contributed to the Bay of Plenty UFG appearing so favourable.
No statistics are shown for North and Central for 1999 as these two areas were combined in that year

System	1998		1997
	Unaccounted For Gas a (GJ p.a.)	Gas Into System b (GJ p.a.)	Unaccounted For Gas a (GJ p.a.)	Gas Into System b (GJ p.a.)
North & Central	(217,574)	22,687,600
North			31,624	21,082,652
Central	(87,037)	8,765,941	33,267	5,740,248
Bay of Plenty	(116,384)	11,283,386	96,656	10,810,824
Frankley Rd – Kapuni	(159,773)	14,744,666	46,104	12,004,052
South	(156,420)	10,593,321	100,808	11,634,630