Update README

## Content

### File overview

### Models

SCALE input and output files for the following models are provided:

* CSAS/KENO full core model at BOEC

* CSAS/KENO full core model at EOEC

* TRITON/KENO BOEC full core depletion model

### File overview

```

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├── README.md

## Content

### Models

SCALE model input and output files are provided for two levels of modeling:

- a single fuel unit cell at BOL

- full core model both at BOL and depletion over life

### File overview

```

.

├── README.md

- f71: ORIGEN binary concentration file

- 3dmap: binary mesh tally file

Note that the inventory on the ii.json files is the full core mass.

### Inventory for accident progression

The `INL-A_core_t6-depl_ce_v7.1.ii.json` contains inventory in the core as

a function of time during the 5-year lifetime.

The inventory used for accident progression analyses is the core-average end of life (EOL) that was calculated using a TRITON full core depletion calculation from beginning of life (BOL) to EOL. TRITON provides inventory for each of the depleted fuel mixture as well as for the weighted sum of these fuel mixtures (i.e., a core-average of all fuel mixtures). This core-average was decayed with ORIGEN for 10 days. The inventory files of interest are the following:

The `INL-A_core_t6-depl_ce_v7.1_2.0GWd_decay.ii.json` contains inventory at

end-of-life decayed.

* Core-average inventory normalized to 1 MTIHM

  * [II.JSON file](full_core/depletion/INL-A_core_t6-depl_ce_v7.1.eol_core_decay_1mtihm.ii.json)

  * [F71 file](full_core/depletion/INL-A_core_t6-depl_ce_v7.1.eol_core_decay_1mtihm.f71)

* Core-average inventory scaled to the actual core mass of 4.5726 MTIHM

  * [II.JSON file](full_core/depletion/INL-A_core_t6-depl_ce_v7.1.eol_core_decay.ii.json)

  * [F71 file](/Users/f78/non-lwr-models-vol3/INL-A/full_core/depletion/INL-A_core_t6-depl_ce_v7.1.eol_core_decay.f71)

The `post.sh` script shows how to process the SCALE f71 files into ii.json and

then uses scripts in the `supplemental` directory to generate example MELCOR

DCH data and MACCS inventory data.

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