CHAPTER It, SECTION 5 CONSTRUCTION. Originally, construction was scheduled to commence cn | November 1953 and to be completed by 31 December. Due to the low priority assigned to this construction, the completion date was advanced to 10 February 1954. The construction starting dates of the individual Stations varied from 11 November to 2e January. The completion dates varied from 21 January to & February. STATIONS 250.01 - 250.59 MOORING WITH FLOAT SITES VARIOUS - USER: NRDL - Figure 2-95. Stations 210.23 and 220.08 Typical GENERAL, Each Station of this series consisted of a 45-gallon drum float, painted yellow, secured in piace by a concrete cube anchor with cable and used to measure fallout distribution. SITES VARIOUS - USER: ESL ENGINEERING. The original criteria were received on 30 April 1953 fur Stations 250.01 thru 250.26. On 23 July the criteria was amended toe inereane the number of Stations to 59. On 10 September one Station was deleted; the GENERAL. ‘These Stations were located on sites William, Yoke, Zebra, Alfa and Bravo. The work involved consisted of embedding User equipment which measured gamma dose versus time in the ground. No concrete was required. Stations 240.01 thru 250.26 were located in the Bikini Lagoon and Stations 250.27 thru 250.238 were assigned to the Emwetok Lagoon. One drawing was started on 12 June, completed on 24 June and approved on 14 July, dates varied from 2 Januaryto 23 January 1954. STATIONS 221.01 - 221.05 ENGINEERING. The original design criteria were received on 9 July and are reported in the Station 220 series. CONSTRUCTION. Work was scheduled to commence on 1 December and to be completed on 31 Janary 1954. Actual construction started on 31 December. Completion dates varied from 5 January 1954 to 23 January. STATIONS 231.01 - 231.15 WIDE FLANGE MOUNT SITES VARIOUS - USER: NRL GENERAL. For land Stations, a 20-foot pile wes used with @ five-foot nroiection. On reefs, 2 25-foot pile was used with a ten-foot projection. These Stations were for neutron flux and spectrum measurements. ENGINEERING. Theoriginal criteria for Stations 231.01 thru 231.08 were received on 1 May 1953. The User desired a wide flange beam capable of withstanding 25 psi pressures. This required a steel H-pile embedded for 15 feet in depth. On 29 July 1953, newcriteria required the addition of an aluminum rod which projected four feet above each pile. On 2 September 1553, criteria changes increased the number of Stations thru 231.15. On °2 October 1953, all Stations, except 231.02 thru 231.05 and 231.13 thru 231.15, were cancelled. On 2 January 1954, Stations 231.13 thru 231.15 were relocated to a different site. One drawing was started on 7 July 1953, submitted on 9 July, and approved by AEC on 28 July; the drawing was issued on 31 July. remaining Stations were renumbered so that CONSTRUCTION. The work was originally scheduled to start on 15 September and to be completed by 31 December. Due to its low work priority, the completion date was extended to 25 February 1954. Construction for Stations in the Bikini Lagoon was started on 9 September and completed on 16 January. For the Eniwetok Lagoon, the Stations were started on 8 September and were completed on 23 January. All work was completed in January, but by 25 February, 12 tloats at Eniwetok and seven floats at Bikini had broken loose. This was caused by cable abrasion against the coral. The cable size was increased from !'4 to !y-inch and moorings were relocated. After the initial test at Bikini, many of the floats were lost. On 26 March 1954, Stations 250.25, .49, .52, .53 and .56 were deleted. STATIONS 251.01 - 251.10 CONCRETE BOX SITES VARIOUS - USER: NRDL GENERAL. These land instrument Stations were located on various islands in the Bikini Atoll to measure fallout distribution. Each Station consisted of a reinforced concrete box 8-4" x 8-4” x 5-0" high. There was no top or bottom to the box, which was embedded four feet into the ground; the lower two feet of the box was filled with coral sand. Figure 2-96 shows Station 251.02 completed on Fox; this example is typical of the series. ENGINEERING. The original design criteria were received on 30 April 1953. Minorrevisions Page 2-103 4 ae tee, ave sed _