TABLE 1. CONDENSED INSTRUMENT SETUP PROCEDURES STEP 1 OPERATIONAL CHECK WITH PROBE AC-3 & RASP-1 SPA-1 8-62-V HP-210 HP-177C & HP-270 SET Cal. SW. to STEP 2 Cal. Factor to Cal. cpm Gross 1.00 _ Gross 1.00 _ at _ at 900 v. value on IN Cal. label epm Cal. label value All legends off on Part I SP A-2 PartII Part Il Gross PHA IN Cal. label value STEP 5 Thresh, to Turn Legend label IN STEP 4 SET PHA-Gross Switch to IN value STEP 3 SET 1.00 2.50 Window to 1.00 STEP 6 SET HV at Cal, label value 900 v. For max. spkr. noise Using Source Hot or Med 241am 239py 90sr-y 8p Ci, 187Cs check 1.00 _ _ Source epm +20% Source epm +20% =5,000 uR/h Hot 241Am _ source at contact Gross PRS-1 Reads source at contact with beta shield closed 331,000 dpm 241Am D.P.2 ON STEP 7 8, Ci, 1387Cs check source 3-3/4" from xtal housing side