Below is a list of texts that saw me through a BS and MS in nuclear engineering (sorry about the formatting), followed by a list of texts I'm looking to pick up for the right price. Any of these will supplement an NE degree very well, if you can pick them up at a good price (nuclear texts can be $150+). My recommendation would be the 2-volume Glasstone text as a comprehensive must-have, and the Shultis Fundamentals text for a newcomer.
Title Author Date of Publication ISBN
Nuclear Engineering Handbook Etherington, Harold 1958, McGraw Hill 0070197202
Nuclear Reactor Theory Lamarsh, John R. 1966, Addison Wesley 0201041200
Systems Summary of a Westinghouse Pressurized Water Reactor Nuclear Power Plant Masche, George 1971, Westinghouse Electric Corp. B000730BKO
Nuclear Reactor Analysis Duderstadt, James J. and Hamilton, Louis J. 1976, John Wiley & Sons 0471223638
General Description of a Boiling Water Reactor BWR/6 Hoffman, Shirley and Moore, Tom 1978, General Electric B000EOOR4M
Nuclear Heat Transport El-Wakil, M. M. 1981, American Nuclear Society 0894480146
Nuclear Energy Conversion El-Wakil, M. M. 1982, American Nuclear Society 0894480154
Basic Nuclear Engineering, 4th Ed. Foster, Arthur R., and Wright, Robert L. 1983, Allyn & Bacon 0205078869
Elements of Nuclear Reactor Design, 2nd Ed. Weisman, Joel 1983, Krieger Publishing Co. 0898745187
Power Plant System Design Li, Kam W. and Priddy, A. Paul 1985, John Wiley & Sons 0471888478
The Making of the Atomic Bomb Rhoades, Richard 1987, Simon & Schuster 671441337
Nuclear Systems I: Thermal Hydraulic Fundamentals Todreas, Neil E. and Kazimi, Mujid S. 1990, Hemisphere 1560320516
Steam: Its Generation and Use, 40th Ed. Stultz, S. C. and Kitto, J. B. 1992, Babcock & Wilcox 0963457004
Nuclear Engineering: Theory and Technology of Commercial Nuclear Power, 2nd Ed. Knief, Ronald Allen 1992, Taylor & Francis 1560320893
Thermal-Hydraulics of a Boiling Water Nuclear Reactor, 2nd Ed. Lahey, R.T. and Moody, F. J. 1993, American Nuclear Society 0894480375
Nuclear Reactor Engineering, 4th Ed. Vol 1: Reactor Design Basics Glasstone, Samuel and Sesonske, Alexander 1994, Chapman & Hall 0412985217
Nuclear Reactor Engineering, 4th Ed. Vol 2: Reactor Systems Engineering Glasstone, Samuel and Sesonske, Alexander 1994, Chapman & Hall 0412985314
Introduction to Health Physics, 3rd Ed. Cember, Herman 1996, McGraw Hill 0071054618
Fluid Mechanics and Thermodynamics of Turbomachinery Dixon, S. L. 1998, Butterworth Heinemann 0750670592
Commercial Nuclear Power: Assuring Safety for the Future Ramsey, Charles B. and Modarres, Mohammad 1998, John Wiley & Sons 0471291862
ANSI/ANS-3.1-1993 - Selection, Qualification, and Training of Personnel for Nuclear Power Plants ANS Nuclear Standards Committee 1999, American Nuclear Society N/A
Nuclear Fuel Cycle: Analysis and Management, 2nd Ed. Cochran, Robert G. and Tsoulfanidis, Nicholas 1999, American Nuclear Society 0894484516
101 Solved Nuclear Engineering Problems (Professional Engineer Exam Preparation) Camara, J. A. 1999, Professional Publications 1888577304
Radiation Shielding Shultis, J. Kenneth and Faw, Richard E. 2000, American Nuclear Society 0894484567
Radiation Detection and Measurement, 3rd Ed. Knoll, Glenn F. 2000, John Wiley & Sons 0471073385
Nuclear Reactor Physics Stacey, Weston M. 2001, John Wiley & Sons 0471391271
Introduction to Nuclear Engineering, 3rd Ed. Lamarsh, John R. and Baratta, Anthony J. 2001, Prentice Hall 0201824981
Fundamentals of Nuclear Science and Engineering Shultis, J. Kenneth and Faw, Richard E. 2002, Marcel Dekker 0824708342
Radioactive Waste Management, 2nd Ed. Saling, James H. and Fentiman, Audeen W. 2002, Taylor & Francis 1560328428
Nuclear Reactor Theory (Hardcover)
by George I. Bell
Hardcover: 619 pages
Publisher: Krieger Publishing Company (June 1, 1979)
ISBN: 0882757903
Thermal Analysis of Pressurized Water Reactors
by L. S. Tong, Joel Weisman
Paperback: 748 pages
Publisher: American Nuclear Society; 3rd edition (May 1, 1996)
ISBN: 0894480383
Nuclear Systems: Elements Of Thermal Design
by NEIL TODREAS
Paperback: 544 pages
Publisher: Taylor & Francis; 1 edition (July 1, 1990)
ISBN: 1560320796
Dynamics of Nuclear Reactors
by David L. Hetrick
Hardcover: 542 pages
Publisher: American Nuclear Society (November 1, 1993)
ISBN: 0894484532
Introductory Nuclear Reactor Dynamics
by Karl Otto Ott, Robert J. Neuhold
Hardcover: 362 pages
Publisher: Amer Nuclear Society (December 1, 1985)
ISBN: 0894480294
Introductory Nuclear Reactor Statics
by Karl O. Ott, Winfred A. Bezella
Hardcover: 385 pages
Publisher: Amer Nuclear Society; Revised edition (January 1, 1989)
ISBN: 0894480332
Nuclear Energy: An Introduction to the Concepts, Systems, and Applications of Nuclear Processes (Hardcover)
by Raymond Murray
Hardcover: 490 pages
Publisher: Butterworth-Heinemann; 5 edition (January 15, 2001)
ISBN: 075067136X
Nuclear Energy : Principles, Practices, and Prospects (Hardcover)
by David Bodansky
Hardcover: 693 pages
Publisher: Springer; 2 edition (April 21, 2008)
ISBN: 0387207783
Introduction To Nuclear Power
by G. HEWITT
Hardcover: 256 pages
Publisher: Taylor & Francis; 2 edition (June 1, 2000)
ISBN: 1560324546
Fundamentals of Nuclear Science and Engineering, Second Edition (Hardcover)
by J. Kenneth Shultis
Hardcover: 616 pages
Publisher: CRC; 2 edition (September 7, 2007)
ISBN: 1420051350