ML18354A356
| ML18354A356 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 03/26/1971 |
| From: | US Dept of Interior (DOI) |
| To: | US Atomic Energy Commission (AEC) |
| References | |
| Download: ML18354A356 (3) | |
Text
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- _._-1, DRAFT JRS 2/9/71 Radioactive liquids will be released from the Palisades Plant, after proper monitoring, into the circulating water dischargep Without taking any credit for dilution in Lake Michigan, the average annual con-centra.tions of the major isotopes and the total curies reieased of each is indicated in the enclosed Table 1. These figu:res are based upon l"/o failed fuel.
An upper limit for release~ or the rnaximum concentration, will be 1/10 of the AEC Part 20 limitso It is expected that 724,300 gallons of liquid waste of signi-fi.cant activity will be released an.'1ually q The majority of this liquid is generated f'rorn an assumed operating schedule of one startup after re-fueling; one cold shutdown and startup at day l; one hot shutdow and startup at day 50; one hot shutdown* and startup at day 140; *one hot shutdown and startup at day 230; one cold shutdown Dnd startup at day 21-t.o; one hot shutdown and* startup at day 270; and one cold shutdow'11 to refuel.
The remaining sources of water are primary coolant bleed for boron dilution ana extraneous sources of water collected in various drain tanks.
The present liquid radwaste system at the Palisades Plant is presently undergoing a review with a new revised ~ystem expected to be installed in the plant at the end of the first fuel cycle. With the aid. of evaporators this system will be a lOCf}fi recycle* system and as such will release no radioactive wastes to the environment under normal operating conditions and n.ssuming 13 fuel failure.
Thus, the annual ma.xtmum and average quantities and concentrations of radioactiv*c isotopes to be re-leased from the plant to the environment will be zero under normal op-erating conditions.
DRAFT 2
As indicated~above until this system is installed the maximum concentration of radioactive isotopes will be 1/10 of AEC Part 20 limits.
d,he new system is installed and under normal operating conditions no liquid activity will be released to t.he environment.
Under abnormal operating conditions, such as steam generator tube leakage,
- the maximum concentration of radioactive isotopes :to be released to the environment. will be 1(7~ of,.'\\EC Part 20 limits with 13 failed fUel }n.,. the
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~l-'ecause of the safety f e'atures designed into the system and the various valve line1I.flS and interlocks, there is not expected to be any accidental release of liquid radwaste to the environment. Constant monitoring on all discharge lines assures that any ma.lfUnctions will be detected before release of activ:Lty 'Go the environment and appropriate action will then be taken so that there is no release from the plant.
Any postulated release or accident would have no impact on the environment since all liquid.wastes are decontaminated or cleaned up before they are physically moved to a position in the pla.~t from which they could be released by normal means or by a postulated accident.
Thus, the quantity and activity released under a postulated accident would be the same as during a normal release.
DRAFT TABLE 1 Liquid Release*
Fraction Total Isotoue of Part 20 Curies Y-91
.031 642 I-131
,G\\016 3e4 cs-13'7
- 0294 403.
.0002 570
- Assumes 30-day holdup for natural decay and passage through two radwa.ste demineralizers a