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| The data given here below are received from records on the magnetic
tape of the computation control system "SKALA" of power unit. The data of control rod positions and values of indications of in-core
neutron flux sensors DKE(h) and DKE(r) is given for time moments 00:39 and 01:22:37, when corresponding dumps of the data have been made.
Dump of other data on the magnetic tape with a binding on time was carried out automatically by program DREG according to the settings made at
01.00 on 26.04.86. All this data are displayed graphically on the pictures 3 – 14 in section "Actual Data", and here they are repeated in an initial digital form. Some diagrams (fig. 7, 27, 8 and 11) already contain the initial digital information, but on the majority of them the primary data are approximated to 2 significant figures, this information here is repeated in a primary form (without a rounding off). The exception is made for control of neutron flux radial distribution by the DKE(r) sensors, there their indications are given without a rounding off and so it does not repeat here. |
| A. The data from listings of the program [PRISMA] |
| The routine [PRISMA] realize active processing of the reactor
measurements which are carried out while in service of the reactor and necessary for the reactor control. The listings formed by the program
contain the data of direct measurements by sensors of in-core control system PPDDCS, by flowmeters on an input in each technological channel,
etc., and also results of calculations: of power allocation and burning out for each TC, margin before boiling crisis etc. 1. Indications of on-height sensors of neutron flux DKE(h) at 1:22:30. The indications of sensors given in the table are proportional to local density of a neutron flux and normalized basically on the reactor power in ÌW. Sensors are allocated on 7 sections on core height in each of 12 measuring channels. Numbering of sections is given from top of reactor core . |
| Numbers | Numbers of sections |
| of cells | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 6047 6027 5057 5037 5017 4047 4027 3057 3037 3017 2047 2027 |
175 120 110 150 145 140 155 185 140 125 150 (93) |
220 165 165 245 210 220 205 250 195 180 190 165 |
160 135 145 180 180 190 155 190 160 150 145 135 |
130 135 135 140 170 160 145 140 140 135 105 100 |
110 135 125 160 155 160 145 145 140 135 100 100 |
105 (122) 110 145 190 145 135 135 140 (127) 95 90 |
45 80 65 90 130 (86) 100 70 90 85 70 60 |
*) Values in brackets it is result of approximation, the real corresponding data are absent.
2. Positions of control rods. In total rods are: 127 [RR] + 48 [AZ] + 12 [AR] + 24 [USP] = 211. The rods which were on top limit (TLS) and not changed this position are not specified in the table. |
| CPS | Type | Position (m) | CPS | Type | Position(m) |
| cell ¹ | of rod | 00:39 | 01:22 | cell ¹ | of rod | 00:39 | 01:22 |
| 6433 6443 6231 6245 6251 6037 5645 5423 5427 5433 5437 5443 5453 5221 5023 5027 5047 5053 4615 4621 4635 4645 4655 4661 4413 4423 4433 4437 4443 4447 4453 4463 4231 4251 4265 4017 4023 4033 4043 | USP USP RR RR PKAZ RR LAR USP PKAZ USP AR1 USP USP RR RR AR2 AR2 RR RR LAR RR RR LAR RR USP USP USP AR3 USP RR USP USP RR AZ RR RR AR1 AR3 AR3 |
1.97 0.75 3.32 1.97 0.2 1.09 0.81 1.83 1.97 1.83 0.14 0.88 1.15 0.14 0.34 2.04 2.04 0.27 0.75 2.17 1.97 0.47 0.0 2.51 2.04 1.83 1.42 0.07 1.15 2.51 2.92 3.05 0.2 1.42 1.83 1.42 0.14 0.07 0.07 | 0.86 0.20 2.45 0.0 0.2 0.0 0.13 0.0 0.26 0.0 1.39 0.0 0.13 0.14 0.66 1.58 1.58 0.27 0.0 1.26 1.0 0.33 0.2 1.39 0.0 0.07 0.0 0.20 0.0 0.80 1.19 1.92 0.2 1.42 1.83 0.0 1.39 0.20 0.20 |
4053 3641 3645 3413 3423 3433 3437 3443 3447 3453 3457 3463 3211 3215 3221 3231 3235 3245 3251 3255 3261 3027 3047 2625 2635 2655 2417 2423 2433 2437 2443 2453 2245 2251 2037 1631 1645 1433 1443 |
AR1 RR RR USP USP USP AR3 USP RR USP RR USP PKAZ RR LAR RR PKAZ RR AZ LAR RR AR2 AR2 RR ÐÐ RR RR USP USP AR1 USP USP LAR RR RR RR RR USP USP |
0.14 1.5 0.88 1.83 1.22 1.28 0.07 2.98 1.5 0.95 1.67 1.83 0.2 2.04 2.78 0.2 2.70 0.23 0.0 1.02 2.71 2.04 2.04 1.50 1.50 0.27 0.20 1.83 1.83 0.14 1.15 1.02 1.70 1.15 1.49 2.65 1.70 0.14 1.97 |
1.39 1.5 0.88 1.83 0.07 0.0 0.20 0.20 1.2 0.99 1.63 0.0 0.2 1.25 0.0 0.2 2.65 0.13 0.40 0.0 0.20 1.58 1.58 0.0 0.33 0.27 0.20 0.0 0.0 1.39 0.07 0.0 0.30 0.79 0.2 0.0 0.33 0.13 0.0 |
It is understood here under this name a cartogram of the reactor core considering each
individual technological channel in which are given: channel co-ordinates (4-place number YYXX); type of loading of the channel ([TK], [DP], [RR],
[AR], DKE(r), B. The data from listings of the program DREG 1. Analogue parametres Time dependence of parameters were
registered in a digital form by program DREG (Diagnostic REGistration), since 01:00, on 26th of April. Key parametres characterising technical
process in the reactor and the power unit, except the power value, thus have been registered. For two loops of which consists external (in relation
to the reactor) a Multipass Forced Circulation Circuit (MFCC) and accordingly for two half of reactor (left and right) the separate data is more low
given. These are following parameters.
Table B1. |
| time 1:00:11 1:01:00 1:02:01 1:03:00 1:04:00 1:05:07 1:05:57 1:06:02 1:06:14 1:06:53 1:07:06 1:07:28 1:08:09 1:08:32 1:09:03 1:09:28 1:09:41 1:10:00 1:10:25 1:11:00 1:12:00 time 1:18:40 1:18:49 1:18:58 1:19:01 1:19:12 1:19:21 1:19:28 1:19:52 1:20:00 1:20:02 1:20:10 1:20:22 1:20:29 1:20:36 1:20:53 1:21:00 1:21:03 1:21:15 1:21:27 1:21:43 1:22:08 1:22:11 1:22:19 1:22:24 1:22:34 time 1:23:00 1:23:02 1:23:04 1:23:06 1:23:07 1:23:09 1:23:11 1:23:13 1:23:14 1:23:15 1:23:17 1:23:19 1:23:21 1:23:23 1:23:27 1:23:30 1:23:31 1:23:32 1:23:36 1:23:39 1:23:41 1:23:43 1:23:45 1:23:46 1:23:47 1:23:48 |
Psd - 68.4 68.4 68.4 68.2 68.2 68.2 68.2 68.4 67.8 67.6 66.8 65.4 65.0 64.2 64.6 65.2 65.4 66.0 66.6 67.6 Psd 68.2 68.2 68.2 67.8 67.8 -67.8 - - - - - - - - - 66.5 66.4 66.0 65.8 - - 64.4 - 64.2 63.8 Psd - 63.6 63.2 - - - 63.4 - 63.8 - - 64.3 - - - - - - 65.0 - - - 67.5 72.8 - 75.2 |
Hsd -505 -536 -567 -602 -668 -722 - 757 -757 -769 -715 -730 -688 -594 -536 -509 -463 -451 -400 -408 -424 -443 Hsd - -591 -594 -602 -602 -602 - - - -614 - -603 -603 - -535 - -560 -548 -532 -517 -499 -466 -453 - 470 -459 Hsd - -453 -459 -456 - - - -459 -456 - -457 -469 - - -491 -490 -490 -490 -482 -454 -452 - - 439 - -403 -369 |
Gfw 144 128 144 192 232 248 248 600 1232 1392 1364 1264 1000 592 104 120 192 136 152 128 120 Gfw - 200 201 192 440 640 - 650 677 - 685 685 693 - 697 - 714 832 818 - - 648 - 416 256 Gfw - - 156 113 - - - - 145 - 155 - 125 - - 138 177 112 170 145 - - 134 - - 144 |
Tfw 235 270 240 210 190 176 - 165 - - 160 - 170 - 210 - - 227 - 190 184 Tfw - 165 - 162 - 159 - - - - - - - - - - 155 - - - - 155 - - 163 Tfw - - - - - - - - - - 199 - - - - - - - - - - - - - - - |
Tin 279 283 283 283 281 281 - 281 - - 280 - 280 - 280 - - 280 - 279 279 Tin - 281 - 281 - 281 - - - - - - - - - - 281 - - - - 281 - - 281 Tin - - - - - - - - - 281 - - - - - - - - - - - - - - - - |
Gmcp1 7.55 7.72 8.15 7.02 7.12 7.65 7.52 6.80 7.05 6.95 7.42 6.77 7.37 7.05 6.72 7.15 7.42 7.45 6.50 7.20 7.00 Gmcp1 - 7.32 7.05 5.92 6.75 6.72 7.16 - - 7.31 6.78 - 6.98 7.18 7.23 - 6.72 7.42 7.20 - - 7.15 - 7.15 7.35 Gmcp1 6.50 7.15 7.53 - 7.86 6.53 7.68 6.93 - 7.25 7.10 7.39 6.00 7.20 7.57 7.87 7.42 6.95 6.96 - - 7.05 7.65 - 4.30 7.75 |
Gmcp2 0.0 0.0 0.0 6.36 6.55 7.00 6.95 7.25 6.77 6.80 6.67 7.32 7.20 7.10 7.07 6.42 6.57 6.75 6.75 7.17 6.70 Gmcp2 - 6.90 7.12 6.35 6.55 6.77 7.09 - - 7.51 6.87 - 6.84 7.22 6.98 - 7.12 7.85 7.12 - - 6.55 - 7.02 6.55 Gmcp2 7.15 6.71 6.80 7.10 6.36 6.68 6.83 6.64 - 6.64 6.78 6.61 7.32 6.61 - 7.00 6.80 7.32 6.72 6.60 - 7.35 6.62 - 4.85 7.95 |
Gmcp3 7.92 8.12 7.85 7.95 7.55 7.85 7.25 7.94 7.52 7.90 7.27 7.65 7.35 7.75 7.82 7.42 7.85 7.92 7.65 7.90 7.95 Gmcp3 - 7.90 7.80 7.60 7.82 7.27 6.37 - - 7.26 7.41 - 7.12 7.76 7.05 - 7.80 7.62 7.82 - - 7.97 - 7.80 7.70 Gmcp3 8.00 - 7.18 - 7.62 - 7.32 - - 6.82 7.28 6.93 - 6.71 6.50 5.97 6.32 6.65 6.42 6.05 - 5.65 5.97 - íä 4.77 |
Gmcp4 7.65 7.05 7.90 7.05 6.82 6.92 7.02 7.17 6.95 6.90 7.10 7.22 7.20 6.75 7.12 7.45 6.77 6.65 7.72 6.97 6.75 Gmcp4 - 7.05 7.25 7.17 7.12 6.92 7.82 - - 7.64 6.94 - 7.34 7.12 6.90 - 7.05 7.02 7.15 - - 7.32 - 7.25 7.10 Gmcp4 6.82 6.46 7.36 - 6.64 6.85 6.00 6.39 - 7.00 6.07 - - - 6.86 6.07 5.90 5.97 5.45 5.62 - 5.75 5.20 - íä 4.42 |
Table B2. |
| time 1:00:11 1:01:00 1:02:01 1:03:00 1:04:00 1:05:07 1:05:57 1:06:02 1:06:14 1:06:53 1:07:06 1:07:28 1:08:09 1:08:32 1:09:03 1:09:28 1:09:41 1:10:00 1:10:25 1:11:00 1:12:00 time 1:18:40 1:18:49 1:18:58 1:19:01 1:19:12 1:19:21 1:19:28 1:19:52 1:20:00 1:20:02 1:20:10 1:20:22 1:20:29 1:20:36 1:20:53 1:21:00 1:21:03 1:21:15 1:21:18 1:21:24 1:21:27 1:21:43 1:22:03 1:22:11 1:22:19 1:22:24 1:22:34 1:22:43 1:22:49 time 1:23:00 1:23:02 1:23:04 1:23:06 1:23:07 1:23:09 1:23:11 1:23:13 1:23:14 1:23:15 1:23:17 1:23:19 1:23:21 1:23:23 1:23:27 1:23:30 1:23:31 1:23:32 1:23:36 1:23:39 1:23:41 1:23:43 1:23:45 1:23:47 1:23:48 |
Psd 69.8 69.4 69.6 69.4 69.0 69.2 69.2 69.2 69.2 69.2 69.0 68.2 66.2 66.0 65.8 66.0 66.6 66.6 67.2 67.6 68.8 Psd 68.3 - - - 68.0 68.0 - - - - - - - - - 67.2 67.6 67.2 - - 66.6 - - 65.6 - 65.2 65.0 - - Psd - 64.6 64.5 64.1 - - 66.1 - - - - - 65.8 - 66.0 66.3 - - - 68.6 - - - 80.1 88.4 |
Hsd -168 -199 -230 -230 -253 -238 - 199 -199 -183 -129 -168 -186 -9 +25 +76 +126 +111 +83 +72 +56 +49 Hsd - -141 -137 -144 -148 -137 - - - -124 - -119 -115 - -55 - -90 -75 - - -63 -65 - -1 - +2 +14 +19 - Hsd - 37 31 42 - - - - 35 - 28 18 12 - - 23 27 16 34 30 28 - 21 81 159 |
Gfw 112 88 112 392 208 208 200 560 1152 936 900 800 464 120 104 112 120 96 112 96 90 Gfw - 120 - 112 352 560 450 516 581 - 573 581 591 - 587 - 576 576 534 576 720 - 601 - 373 320 144 - 82 Gfw - - 73 109 - - - - 120 - - 98 91 - - 105 117 128 109 108 - - 103 116 - |
Tfw 228 236 240 235 175 170 - 180 - - 185 - 190 - 195 - - 200 - 205 200 Tfw - 180 - 175 - 170 - - - - - - - - - - 164 - - - - - - 167 - - 168 - - Tfw - - - - - - - - - 185 - - - - - - - - - - - - - - - |
Tin 282 285 285 285 284 284 - 284 - - 283 - 283 - 283 - - 283 - 272 272 Tin - 281 - 281 - 281 - - - - - - - - - - 281 - - - - - - 281 - - 281 - - Tin - - - - - - - - - 281 - - - - - - - - - - - - - - - |
Gmcp1 7.45 7.55 7.45 7.95 7.87 7.82 7.62 7.80 7.82 7.65 6.92 7.52 7.50 7.32 7.00 7.32 7.72 7.32 7.47 7.17 7.35 Gmcp1 - 7.22 7.40 7.17 7.15 7.27 - - - 7.92 7.38 - 7.12 7.37 7.46 - 7.65 7.25 - - 7.37 - - 7.27 - 7.85 7.52 - - Gmcp1 - 7.62 7.47 - 7.61 - - 7.72 - 7.25 7.90 7.57 7.68 7.25 7.57 7.55 7.35 8.12 7.25 7.37 - 7.72 7.37 4.77 7.05 |
Gmcp2 0.40 0.42 0.47 0.42 0.40 0.42 0.37 0.35 0.40 6.20 6.00 6.37 6.30 6.25 6.14 6.00 6.27 6.10 5.75 5.80 6.22 Gmcp2 - 5.72 5.75 6.32 6.20 5.92 - - - 6.32 6.18 - 5.65 6.42 6.85 - 5.97 6.00 - - 6.18 - - 6.37 - 6.55 5.97 - - Gmcp2 - - 6.50 - 5.85 - 6.57 - - 6.60 - - 6.07 6.65 - 6.57 6.27 6.55 6.12 6.45 - 6.42 6.35 4.02 6.95 |
Gmcp3 7.80 7.82 7.80 8.05 7.62 7.62 7.85 7.60 7.22 7.42 7.05 7.07 7.10 7.67 7.45 6.87 7.72 7.42 7.62 6.82 7.02 Gmcp3 - 7.65 7.17 7.72 7.67 7.15 - - - 7.37 7.52 - 7.02 6.47 7.31 - 7.32 7.22 - - 7.35 - - 7.12 - 7.27 7.05 - - Gmcp3 7.89 7.42 7.82 - 7.21 - 6.80 7.50 - 6.82 6.82 6.77 6.61 - 6.43 5.65 6.37 6.57 6.02 5.67 - 5.50 5.57 íä * | Gmcp4 7.02 7.32 6.82 6.95 7.40 7.72 8.17 7.75 8.00 6.72 7.45 7.52 7.55 7.62 7.15 7.52 7.35 7.45 7.45 7.14 6.75 Gmcp4 - 7.37 7.20 7.60 7.05 7.02 - - - 7.67 7.07 - 7.22 7.12 7.52 - 6.82 7.67 - - 7.12 - - 6.82 - 7.80 7.67 - - Gmcp4 7.60 7.82 7.29 7.79 6.73 7.00 - - 7.40 - 6.57 6.07 - - 6.18 6.50 5.90 6.07 5.12 5.50 - 5.80 5.40 íä 0.45 |
2. Discrete parametres. Besides values of parametres of
technological process (analogue parametres), program DREG registers also discrete signals of system of the centralised control (discrete
parametres). These are signals about an equipment condition (it is switched on/off), emergency and warning signals about excess of safe limits on
what or to technological parameter, etc. Each of such parameter matters either 0 or 1. Value 1 means occurrence of a corresponding signal, and
value 0 - its removal. |
| code | value | event | comment |
K07L053 K07L203 K10L064 K06L015 K06L042 K06L040 K06L151 K06L146 K07L202 K06L045 K06L017 K06L016 K06L053 K06L052 K06L051 K06L050 K06L047 K06L046 K06L045 K06L044 K07L137 K07L136 K07L131 K07L130 K07L166 K07L165 K07L145 K07L144 K06L040 K06L036 K08L201 K06L176 K06L175 K06L167 K10L045 K10L035 K06L005 K06L041 K06L037 K06L034 K06L176 K06L175 K07L137 K07L136 K07L131 K07L130 K07L167 K07L166 K07L165 |
1 0 0 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 |
time mark 1:23:04 Isolating valves are closed time mark 1:23:11 [AR] switching-off on malfunction time mark 1:23:23 Pressure decrease of water injection in [KND-1] time mark 1:23:40 [AZ-5 SUZ] Unavailability of EPS [AR2] measuring part is out of order [P2-1332] regulator is switched on at EPS-5 [P1-1332] regulator is switched on at EPS-5 [AR] switching-off on malfunction Unloading TG at EPS-5 time mark 1:23:43 [AZSR] (period decrease in the basic range) [AZM] (power excess in the basic range) Emergency power excess on 2APP-1 Emergency power excess on 2APP-2 Emergency power excess on 2APP-3 Emergency power excess on 2APP-4 Emergency power excess on 1APP-1 Emergency power excess on 1APP-2 Emergency power excess on 1APP-3 Emergency power excess on 1APP-4 1APP-4 is out of order 1APP-3 is out of order 1APP-2 is out of order 1APP-1 is out of order 2APP-4 is out of order 2APP-3 is out of order time mark 1:23:44 2APP-2 is out of order 2APP-1 is out of order time mark 1:23:47 Measuring part of [AR-2] is out of order Measuring part of [AR-1] is out of order Pressure excess in the right SD Pressure excess in the left SD 1APR-12 is out of order time mark 1:23:48 Unloading TG at EPS-5 [BRUK-1] operation time mark 1:23:49 Pressure growth in RS Executive part of [1ÀÐ] is out of order Executive part of [2ÀÐ] is out of order There is no voltage of 48 V on 1[SSh] Pressure excess in the right SD Pressure excess in the left SD 1APP-4 is out of order 1APP-3 is out of order 1APP-2 is out of order 1APP-1 is out of order 1APR-12 is out of order 2APP-4 is out of order 2APP-3 is out of order |
The experiment beginning [AR] it is put in operation Pressure is restored EPS-5 button is pressed Rods have descend. off TLS signal removal [AR] blocking at EPS-5 uncontrolled power excursion - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- - "- signal removal destruction of the TCs signal removal - "- - "- - "- - "- - "- - "- - "- - "- |