05000413/FIN-2008003-02
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | TS 5.7.2 requires, for areas with radiation levels greater than 1000 mrem/hr at 30 cm from the radiation source, compliance with the requirements of TS 5.7.1, which states, in part, that any individual permitted to enter such areas shall be provided with a radiation monitoring device that continuously integrates the radiation dose rate in the area and alarms when a preset integrated dose is received. Contrary to the above, on June 7, 2008, a deconner entered the Unit 1 refueling cavity, which was posted and controlled as a locked high radiation area, without a transmitting electronic dosimeter (ED). The workers ED, which was inadvertently left outside the area, was transmitting; but an HP supervisor and the HP technician performing continuous surveillance observed that only EDs for two of the three individuals in the canal indicated elevated dose rates. Believing that one of the EDs had failed, HP requested that the individual leave the area. A subsequent survey determined that the work area general area dose rate was 160 to 240 mrem/hr, with the highest general area of 320 to 480 mrem/hr at the plane of the reactor vessel head. Dose rates 30 cm from the upper internals, 3 to 4 feet under the suspended reactor vessel head, were determined to be 1070 mrem/hr. Although the pre-job briefing the previous day had stressed that entry under the suspended reactor vessel head was not allowed because of the inherent industrial safety concerns, there was neither a physical barrier nor an HPT in the cavity to prevent a worker from accessing the location where the LHRA conditions existed. This event is documented in the licensees CAP as PIPs C-08-3593 and C-08-3588. The violation was evaluated using the Occupational Radiation Safety Significance Determination Process and was determined to be of very low safety significance (Green) because this finding did not involve ALARA planning or work controls, was not an over-exposure, did not have a substantial potential for over-exposure, and the ability to access dose was not compromised |
| Site: | Catawba  |
|---|---|
| Report | IR 05000413/2008003 Section 4OA7 |
| Date counted | Jun 30, 2008 (2008Q2) |
| Type: | NCV: Green |
| cornerstone | Or Safety |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | F Ehrhardt W Loo H Gepford A Sabisch G Kuzo R Moore S Rose R Chou D Mas-Penaranda C Peabody J Hamman N Griffis G Gardner J Paige |
| INPO aspect | |
| ' | |
Finding - Catawba - IR 05000413/2008003 | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Catawba) @ 2008Q2
Self-Identified List (Catawba)
| ||||||||||||||||||||||||||||||||||