Public Accounts CommitteeWritten evidence from the Nuclear Decommissioning Authority

PROJECTS IN THE PLANNING AND DESIGN PHASE

				(a)	(b)	(d)	(e)
Project	Description	Year project initiated	Years in planning/ design stage	Estimated cost at initiation	Estimated cost in performance plan May 2011	Estimated cost as at March 2012	Estimated cost as at September 2013
				(£m)	(£m)	(£m)	(£m)
Bulk sludge and fuel retrievals3	Provide assets needed to support the export of ponds solids, wet bay solids and sludge	2004	8	73-229	227	233	330

Pile fuel cladding silo3	Design and build a new waste retrieval plant	2005	7	150-495	342	341	750

Box encapsulation plant product stores comprehensive import/export facility3	Design and build a store with an import/export facility for containerised intermediate-level waste; this project has now been replaced by the Direct Import Facility (DIF)	2006	6	108-119	277	281	192

Silos maintenance facility3	Build a high contamination workshop to keep machines functional or permit their replacement during retrieval operations	2006	5	49-180	165	165	238

Highly active liquor storage tanks3	Build replacement tanks to hold highly active liquid waste from reprocessing	2007	5	83	474	474	474

Silos direct encapsulation plant 3	Build a treatment plant to deal with hazardous legacy waste	2010	2	560-669	668	1,281	1,324

Ponds solid treatment plant technical underpinning project 7	Complete a series of studies to define solutions for the management of ponds	2010	2	29	29	21	21
Total				1,052-1,804	2,182	2,796	3,329

Total (excluding highly active liquor storage tanks)				969-1,721	1,708	2,322	2,855

					(g)	(h)	(i)	(j)
Variance against original upper estimate (e) - (a)	Variance against upper estimate at initiation	Variance against performance plan estimated cost (e) - (b)	Total spend to March 2012	Total spend to September 2013	Planned delivery date when initiated	Planned delivery date in 2011 performance plan	Estimated delivery date as at March 2012	Estimated delivery date as at September 2013	Variance against delivery date when initiated (j) - (g)	Variance against delivery date in 2011 performance plan (j) - (h)
(£m)	(%)	(£m)	(£m)						(months)	(months)
101	44	103	132	186	December 2012	November 2016	November 2016	January 2018	61	14

255	52	408	117	186	October 2019	August 2017	August 2017	January 2023	39	65

73	61	-85	43	60	January 2019	October 2017	October 2017	October 2018	-3	12

58	32	73	21	39	October 2011	May 2017	February 2017	February 2018	76	9

391	471	0	39	44	March 2013	March 2018	Cancelled	Cancelled	0	0

655	98	656	207	315	November 2018	June 2017	October 2017	August 2020	21	38

-8	-28	-8	3	11	March 2015	March 2015	March 2015	Scope moved to other projects 7	0	0

1,525	85	1,147	562	841					194	138

1,134	66	1,147	523	797					194	138

NOTES

1. The cost estimates at initiation are the ranges based on historic data used in the business cases for each project.

2. The costs in this table are 'P50' estimates (meaning there is a 50 per cent probability of the projects being delivered either under or over budget), which include allowances for risk and uncertainty.

3. Cost and schedule estimates are provisional due to high levels of uncertainty.

4. Figures quoted for the 2013 update are in 2013 money values, original estimates have not been escallated from the 2012 position, so the delta is slightly overstated

5. The Authority took a strategic decision to cancel the highly active storage tanks project in May 2012.

6. Five of these projects were initiated before Nuclear Management Partners Limited was appointed.

7. The Ponds solid treatment plant technical underpinning project is no longer classed as a major project. Main scope moved to BEP, rapid fuel drying and containerisation studies.

PROJECTS IN THE CONSTRUCTION PHASE

			(a)	(b)	(d)	(e)
Project	Description	Date passed design gate	Estimated cost at design gate	Estimated cost in performance plan May 2011	Estimated cost as at March 2012	Estimated cost as at September 2013
			(£m)	(£m)	(£m)	(£m)
Local Sludge Treatment Plant	Construct storage tanks to hold radioactive sludge and a building to house them with settling plant, utilities and ventilation equipment	May 2006³	32	63	63	63

Buffer Sludge packaging plant¹	Construct storage capability for radio active sludge until it can be processed into a suitable waste eform for final disposal	September 2006³	108	202	234	240

Encapsulated product store³	Construct new store for intermediate-level radioactive waste from reprocessing and future hazard reduction programmes	October 2006³	94	103	103	105

Magnox swarf storage silos retrievals	Construct equipment and systems that can safely remove radioactive waste from a storage silo	March 2007³	243	421	387	729

Separation area ventilation	Construct a 120 metre high chimney with associated plant room monitoring room and substation	August 2008³	144	120	138	224

Evaporator D	Construct a new evaporator to reduce the volume of highly active liquors (a by-product of reprocessing).	April 2009	397	398	641	660

Box transfer facility	Construct a tunnel and associated mechanical devices to transport processed waste contained inside of 3m³boxes	December 2011	148	158	193	189

Total			1,166	1,465	1,759	2,210

					(g)	(h)	(i)	(j)
Variance against design gate estimate (e) - (a)	Variance against design gate estimate	Variance against the performance plan estimated cost (e) - (b)	Total spend to March 2012	Total spend to September 2013	Planned delivery date at design gate	Planned delivery date in 2011 performance plan	Estimated delivery date as at March 2012	Estimated delivery date as at September 2013	Variance against delivery date at design gate (j) - (g)	Variance against delivery date in 2011 performance plan (j) - (h)
(£m)	(%)	(£m)	(£m)	(£m)					(months)	(months)
31	97	0	63	63	March 2008	January 2012	Delivered March 2012	Delivered March 2012	48	2

132	122	38	172	220	June 2008	October 2013	March 2014	March 2014	69	5

11	12	2	99	103	September 2010	August 2012	November 2012	April 2014	43	20

486	200	308	167	235	April 2015	June 2023	June 2023	Jan 2023	93	-5

80	56	104	106	149	August 2011	January 2013	November 2013	December 2016	64	47

263	66	262	375	532	July 2014	May 2014	December 2015	March 2016	20	22

41	28	31	40	61	November 2018	January 2017	March 2017	February 2019	3	25

1,044	90	745	1,022	1,363					340	116

NOTES:

1. The costs in this table are "P50" estimates that include allowances for risk and uncertainty. This means there is a 50% probability of the projects being delivered either under or over budget.

2. Figures quoted for the 2013 update are in 2013 money values, original estimates have not been escallated from the 2012 position so the delta is slightly overstated

3. Five of these projects passed the design gate before the appointment of Nuclear Management Partners Limited

Prepared 10th February 2014

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PROJECTS IN THE PLANNING AND DESIGN PHASE

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Public Accounts CommitteeWritten evidence from the Nuclear Decommissioning Authority

PROJECTS IN THE PLANNING AND DESIGN PHASE

PROJECTS IN THE CONSTRUCTION PHASE

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