a Yr J _ ff- I - _t ' - ·' - ' · · i ' ffi @m@ ' ' memorandum Los Alamos National Laooratory P O BoxO Mercury Nev 89023 TO FROM I SYMBOi SUSJECT ' Jesse Aragon BSE Division Leader HS l Julie A Orcutt HSE-1 NTS HSE-lN-5627 TRIP REPORT _ -__ -- DJ TE uA1ls10P1TElEPHONE 13 January 1987 J900 7620 -- - HIGBTLY DERRINGER EXERCISE HONTREV SITE I joined the Los Alamos NEST party at Desert Rock Airstrip at about 1300 on -Friday 5 December After three hours of negotiations betveen the NEST Advance Party and the Hontrev government our party vas permitted ·to cross the 6order into Hontrev The major t f my time vas spent vorking as a member of the Damage Limitations Team Hovever I also provided health physics support to the Assault Force personnel and equipment radioactive contaminatioi survey t 0 the Diagnostics Group tritium measurements and gamma surveys during co radiography and the Disablement Team post disablement area reentry - anti contamination clothing respiratory protection radiation and explosive mixture and toxic gas measurements l I 1- I I I I I i The risks associated vi th plutonium lung doses attributable to the projected dispersal pattern vere veighed against the risks associated vith erecting the containr ent structure The on-scene commander elected to forgo containment Huch of the Damage Limitation Vorking Group effort has been directed to'ward the heal th physics considerations of reentry into foam a condition vhich tJould minimize spread and resuspension of plutonium The lack of foam mitigation presented a very different health physics problem for the reentry party If disablement tJithout containment is a real possibility tJe need more standard anti-contamination equipment coveralls full face resp1'rators tJith hepa filters and alpha detection instruments in addition to specialized foam reentry equipment Gortex suits SCBA I found my involvemen _in this NEST exercise to be most valuable I am sure that my involvement in any future exercises as vell as my NTS vork vill benefit from this experience JAO kltJ CY RSE Travel Office HS K491 Hary Ann Rosenthall HSE-00 HS K491 Allen H Valentine HSE-1 HS K483 HSE-1 RFS RVH HS K483 HSE-1 NTS HS J900 --------