ML20032E431
| ML20032E431 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/13/1981 |
| From: | Hukill H METROPOLITAN EDISON CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| L1L-311, NUDOCS 8111200551 | |
| Download: ML20032E431 (6) | |
Text
{{#Wiki_filter:. Metropolitan Edison Company Post Office Box 480 !( Middletown, Pennsylvania 17057 Writer's 9frect Dml Number h Novonber 13, 1981 r o; L1L 311 8 fs g ~
- 1 T~
Office of Nuclear Reactor Regulation
- g Attn: John F. Stolz, Chief q
Division of Licensing //- id/ Operating Reactor Branch #4 Q j )) ,/ U. S. Nuclear Regulatory Commission ~ Washington, D. C. 20555
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (Dil-1) Operating License No. DPR-50 Docket No. 50-289 Reactor Building Air Temperature Detector Test In order to supplement our response of June 3, 1981 (L1L 168) in response to your letter of April 10, 1981 concerning the location of the subject detectors enclosed please find a report of the results of the subject test performed on September 2, 1981 during Hot Functional Testing (HFT). The HFT data indicated that the arithmetic average temperature of the Reactor Building air temperature detectors at the 1.ocations described in TSCR 92 dated April 11, 1980 adequately represent the existing temperetare and of particular interect the RB temperature above the 320 foot elevation. Additionally, the existing Reactor Building Ventilation system (40,000 CFI! cool air at 375 ft. I elevation) in the upper portion of the Reactor Building is effective, and the air temperature in the dome area is uniform and stable which is approximately 10 F j less than the temperature of the upbound hot air stream exiting from the secondary l shield compartment. This substantiates, by test, that the existing RTD locations are adequate and that none need to be changed. The arithmetic average temperature of the 14 available RTD's in the TSCR 92 t l locations above elevation 320 feet during the HFT was 116 F (outside ambient l 68 -72 F) while the calculated bulk air temperature was 118.12 F (based on an l average dome temperature of 119.15 F). Durirq normal unit operation on a selected l summer day, the arithmetic average of 15 RTD's above elevation 320 feet was l 129.1 F (one industrial cooler in 1977 - now 2 industrial coolers) while the l calculated bulk air temperature in the same zone was 130.7 F. Based on this l information the arithmetic average temgerature of the RTD's above 320 feet at the TSCR 92 locations will be within 2 F biasing from the true bulk temperature i at low power and within 1 F full power. f)O l 3 l 'I OOOOb9 PDR Metropotran Edison Company is a Member of the General Pubhc Utaties System
4 Since the primary purpose of installing the temperature detectors in the containment building is to monitor the air ambient temperature, the proper operating environment for safety equipment, components and the Reactor Building structure is assured. Additionally, the limitation on Reactor Building air temperature assures that the containment design temperature / pressure is not exceeded in the event of a design basis LOCA. Sincerely, f . D. Hukill Director, D11-1 HDH:IMH:jrg Attachment cc: R. C. Haynes L. Barrett R. Jacobs i
TABLE I Containment Temperature Data Summary HFT 9/2/81 Temp. Plateau 5320F RDT RID Time 24 hrs. ACTUAL LOCATION No. TE-655 02:55 06:51 11:00 15:30 19:00 23:2D Avg. R NE Wall - 287' 90.5 90 90 90.5 91 90 90.33 S S Wall - 287' 91.5 91.5 91.5 92.5 93 92.5 92.08 T NW Wall - 287' 86 86 86 87 88 86.5 86.58 V NW Sec. Sh - 287' 87 87 86.5 86.5 87.5 86 86.75 M NE Wall - 314' 126 125 126 126 125 126 125.67 N S Wall - 314' 123 121 122 124 123.5 124 122.92 A SE Wall - 352' 123 119 120 123.5 123 124 122.08 B NW SH - 352' 118.5 107 109 117.5 11S 122 115.33 C NW SH - 352' 110 110.5 111 111 110.5 110 110.50 E NW SH - 352' 109 103 109 109 109 109 109 H NW SH - 352' 112 112 113 112 112 112 112.16 I NW SH - 352' 114.5 115 115 114.5 113 115 114.50 K S SH - 352' 113.5 114 114 114 114 113.5 113.83 L NW SH - 352' 112 112.5 113 112.5 113 113 112.67 c re -39' 116.5 107 107.5 111.5 111 111.5 110.83 P E Inside Shield-352' 110 110 110.2 110.5 111 119.5 110.67 W NE In-Shield - 364' 122 122 123.5 122.5 123 121.5 122.67 X N In-Shield - 364' 129 128 130 129 129.5 129. 129.08 J E Wall - 400' 117 117.5 118 117 117.5 117 117.33 D F Wall - 382' 124 124 123 123.5 123.5 124 123.66 1 NE Dome - 454' 119.5 119.5 119.5 119.5 119.5 119.5 119.5 2 SW Dome - 454' 119.4 119.2 119.7 119.5 119.7 119.5 119.4 3 E Wall - 437' 119.1 119 119.6 119.2 119.0 119.4 119.2 4 SW Wall - 437' 118 117.6 119.0 118.6 118.9 118.2 118.4 5 Crane - 437' 119.5 119.1 119.6 119.6 119.7 119.5 119.5 6 Crane - 437' 118.7 118.7 118.8 118.9 119.1 118.8 118.75 7 Crane - 437' 119.6 119.4 119.5 119.6 119.7 119.6 119.6 8 Crane - 437' 118.9 118.5 118.7 119.2 119.2 118.9 118.4 9 Center - 410' 115.5 115.2 116 115.7 114.9 115.3 115.8 10 Center - 388' 115.2 114.7 114.7 113.9 114.5 113.9 114.3 11 S/G 1B - 366' 118.1 119.1 119.7 118.5 118.8 118.2 118.7 12 Pressurizer - 366' 118 117.2 117.3 119.5 119.6 118.3 118.3 IDIE TDIE TIME TIME TIME TIME 02:20 06-22 10:30 15:00 18:15 22:45
TABLE 11 Containrent Tempercture Dato She:t (CF) 70 DB 7 3 03 68 4.'s 6 4 'rd Inst # Actual 1.ocation April Elev.RTD. PTS TE-655 (Normal) 1979 9/14/77 7/9/75 287'~ 18 R NE Wall-287' 95 105 119 19 S S Vs11-287' 99 105 101 l 20 T NW Wall-287' 96 104 102 22 V NW Sec Sh 287' 95 ice 100 l j 314' 13 M NE Wall 314' 106 114 106 14 N S Vall 314' 113 114 112 15 0 hv Wall 314 ' 104 112 101 Below 107.66 103.6 100.6 3200 Any 3 average 95.330 113'~3" F 107T6cr Any 4 average 105.50 104 101 96.50 111.2 110 i Total 7 average 101.14 108 105.8 Belov 305' Any 3 average 95.33 102.6 101 96.66 104.6 107.3 Above Average te.perature of any 305' 15 RTDs 120/124 128/129 129.8/12 352' 1 A SE Vall-352' 121 125 127 2 B b"4 Sh-352' 126 131 131 3 C NE Sh-352' 120 124 125 5' E NE Sh-352' 120 125 126 7 C NE Sh-352' 117 124 123 l ~ 8 H NW Sh-352' 126 130 130 9 ~ I NW Wall-352' 125 130 130 11 K S Sh-352' 124 128 130 l 12 L NW Sh-352' 126 132 131 16 P E Sh-352' 123 127 127 21 U E Sh-352' 126 130 131 A3 (123 ) (127.3) (128.2) 352' Average l 364' 23 V NE Sh-364 ' 125/ 131/ 132.5 24 X N Sh-364' 126 131 l 400' 10 J E Va. 400' 129 130 135 382' 4 D E Wall-332' 131 136 137 Above 320' Average of 15 RTD's 124.26 '129.2 129.8
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