DOE 2000. - Waste Isolation Pilot Plant - U.S. Department of Energy

WIPP RH PSAR DOE/WIPP-03-3174 CHAPTER 5
C
C
C
C
A worker involved in a waste-handling accident will stop the operations, examine the cask or
drums and determine a breach has occurred, and begin to exit the immediate area within 30
seconds of a waste handling accident occurring..
A 10-160B cask can contain no more than 10 waste drums.
The waste drums in a 10-160B cask are DOT Type A (or equivalent) 55 gallon drums.
No more than two 10-160B casks will be in the RH Bay at one time.
C The RH Bay doors are closed at all times during waste handling activities related to the 10-160B
cask inside the bay.
C
C
C
C
C
C
C
The CUR shield door is closed during the removal of cask lid or the drums from the cask.
No more than six fully loaded facility canisters are stored in the Hot Cell.
Only one partially loaded facility canister is stored in the Hot Cell.
Only ten waste drums can be stored in the Hot Cell and not in a facility canister. All other waste
drums in the Hot Cell are in facility canisters.
An extended period of time between placing the lid on a fully loaded facility canister and sealing
the lid is not allowed to occur.
The maximum height a waste drum or Facility canister can be dropped in the Hot Cell is 10 ft.
The air movement rate through the RH Bay cask receiving area is 0.25 m/second.
The defense-in-depth SSCs which are applicable to the above ground LOC scenarios, per the criteria in
Section 3.1.3 are assigned as follows:
C
DOT Type A waste drums - primary confinement
C
C
WHB Ventilation System - secondary confinement
Hot Cell - secondary confinement
5.2.3.13 NC4 Loss of Confinement in the Transfer Cell or Underground
Scenario Description - The 10-160B HAZOP 56 refers to the hazard analysis for 72B cask for operations
that occur in the Transfer Cell (hazardous events 13ABCD-1 and 14ACDEFGHI-1) and underground
(hazardous events 15ABC-1, 16ABCD-1 and 17ABCD-1) during the processing of 10-160B casks. At
the point in processing of a 10-160B cask where these events are postulated to occur, the waste drums
from the 10-160B cask have been loaded into a facility canister, which is being or has been loaded into a
facility cask for disposal.
The potential consequences of the LOC in the Transfer Cell and LOC underground events are not
explicitly analyzed in the 10-160B HAZOP 56 because of the following:
Ç
Processing a facility canister or a 72B waste canister in the Transfer Cell until emplacement in the
borehole in the Underground is the same.
Ç
The radiological content of a 72B waste canister (80 PE-Ci minimum) bounds the radiological
content of a facility canister (60 PE-Ci max).
5.2-66 January 22, 2003