CONTENTS ee eee eee eee L ABSTRACT ~~ ~--------- eee ee ee eee ee ee eee 5 FOREWORD -------- eee ee ee ee PREFACE -- ------ een ee eee ee eee eee eee ; CHAPTER 1 l.l 1.2 INTRODUCTION- ----- +--+ -+------ +e eee 7 ee li Objectives --- + - -- tee ee ee eee ee ee ee Background -------- ee eee ee te et ee eee 1 CHAPTER 2 PROCEDURES- - -------+--+--------+---e 12 2.1 2.2 2.3 Instrumentation= --c tt oe et tt re tt ee ee 12 e 13 Operational Procedures --- - 2 tt tote tte rt 2.2.1 2.2.2 Long-Range Samples- ---- 7 - co oc tt eee 13 Analytical Procedures~--- - cco ttc tt ttt eee 13 2.31 2.3.2 2.3.3 CHAPTER 3 3.1 em ee 13 Radiochemical; Particulate- ~-- cco eee ee Radiochemical; Gas------ tre ttt te 1, Physical end Petrographie ---- tet ttre lu RESULTS ---- - ee ee ee ee ee te ee ee eee 15 Radiochemical Analyses of Particulate Debris ------ 7 7- 15 3.1.1 31.2 Fission Products- -"--- ccc ttt ee rere 15 ere 15 Rare Earths ~ ~"* ~- 7 "7 77 fe ter err 3.1.3 20 Uranium Beta Emitters --- cer cect tr rer rere 3.1.5 rer 20 Induced Activities- ----° cert rete 3.1.4 3.2 Close~In Sampling ~--- -- tr ct we een we 13 Plutonium and Uranium Alpha Emitters- ~- - 7-7 7 7° 7 20 Radiochemical Analysis of Gas Samples~> ~~ --- °° 7777 20 3.2.1 Background and Theoretical Data----- 7-7 rr 20 3.2.2 Definition of Units Expressing Results- ----- 7 - 25 rrr 31 3.2.3 Individual Results- ---- 7 et tt ett e 31 3.2.4. Atom and Other Ratios -- -- 7 - rr terr 3.3 3.2.5 Operation of the Squeegee Sampler ---- "7 77 7 77 31 3.3.1 Petrographic Analyses --- 7 > tt rr ter 36 3.3.3 Gross Activity Measurements ~-- ccc rt rr ttt 36 Physical Analysis of Particulate Debris- ------ 7777 36 3.3.2 Specific Beta~Activity Measurements --- -- 77 7 7 36 CHAPTER 4 DISQUSSION- -- ------ ee eee ee ee rte 37 4.1 4.2 4.3 Fission Product Analyses--- 77> ee reo cer er ttt 37 Rare Earth Analyses- --- - + -->- coe coer rr ttt 37 Isotopic Analyses, Heavy Elemnts~ -----7- 77-777" 38 9