# Validation of Three-Dimensional Synthesis RPV Neutron Fluence Calculations Using VVER-1000 Ex-Vessel Reference Dosimetry Results

## Abstract

According to Russian federal norms and the safety guide of the nuclear regulatory body of Russia, the maximum fast neutron fluence above 0.5 MeV at critical positions of the reactor pressure vessel (RPV) of VVER-type reactors is used for prediction of the RPV lifetime. For the computation of neutron fluences in the RPV near the reactor core midplane level, the three-dimensional (3-D) synthesis method based on two- and one-dimensional S{sub N} calculations may be acceptable but needs validation. The present validation analysis was carried out on the basis of neutron transport calculations for a VVER-1000 model by means of the well-known codes DORT (R, {Theta}- and R, Z geometry) and ANISN (R geometry) using the multigroup library BUGLE-96. The 3-D spatial neutron source distribution, including pin-to-pin power variations and the complex baffle construction, were modeled in detail.

- Authors:

- Publication Date:

- Research Org.:
- Gosatomnadzor of Russia, Moscow (RU); Forschungszentrum Rossendorf e.V., Dresden (DE)

- Sponsoring Org.:
- none (US)

- OSTI Identifier:
- 786257

- Report Number(s):
- ISSN 0003-018X; CODEN TANSAO

ISSN 0003-018X; CODEN TANSAO; TRN: US0109315

- Resource Type:
- Conference

- Resource Relation:
- Conference: 2000 Annual Meeting, San Diego, CA (US), 06/04/2000--06/08/2000; Other Information: Transactions of the American Nuclear Society, Volume 82; PBD: 4 Jun 2000

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; DOSIMETRY; FAST NEUTRONS; NEUTRON FLUENCE; PRESSURE VESSELS; REACTOR CORES; VALIDATION; WWER-5 REACTOR; SERVICE LIFE; D CODES; A CODES; THREE-DIMENSIONAL CALCULATIONS; ONE-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL CALCULATIONS; MATHEMATICAL MODELS; COMPUTER CALCULATIONS; COMPUTERIZED SIMULATION; B CODES

### Citation Formats

```
G. Borodkin, and B. Boehmer.
```*Validation of Three-Dimensional Synthesis RPV Neutron Fluence Calculations Using VVER-1000 Ex-Vessel Reference Dosimetry Results*. United States: N. p., 2000.
Web.

```
G. Borodkin, & B. Boehmer.
```*Validation of Three-Dimensional Synthesis RPV Neutron Fluence Calculations Using VVER-1000 Ex-Vessel Reference Dosimetry Results*. United States.

```
G. Borodkin, and B. Boehmer. Sun .
"Validation of Three-Dimensional Synthesis RPV Neutron Fluence Calculations Using VVER-1000 Ex-Vessel Reference Dosimetry Results". United States.
```

```
@article{osti_786257,
```

title = {Validation of Three-Dimensional Synthesis RPV Neutron Fluence Calculations Using VVER-1000 Ex-Vessel Reference Dosimetry Results},

author = {G. Borodkin and B. Boehmer},

abstractNote = {According to Russian federal norms and the safety guide of the nuclear regulatory body of Russia, the maximum fast neutron fluence above 0.5 MeV at critical positions of the reactor pressure vessel (RPV) of VVER-type reactors is used for prediction of the RPV lifetime. For the computation of neutron fluences in the RPV near the reactor core midplane level, the three-dimensional (3-D) synthesis method based on two- and one-dimensional S{sub N} calculations may be acceptable but needs validation. The present validation analysis was carried out on the basis of neutron transport calculations for a VVER-1000 model by means of the well-known codes DORT (R, {Theta}- and R, Z geometry) and ANISN (R geometry) using the multigroup library BUGLE-96. The 3-D spatial neutron source distribution, including pin-to-pin power variations and the complex baffle construction, were modeled in detail.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2000},

month = {6}

}