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

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WIPP RH PSAR <strong>DOE</strong>/WIPP-03-3174 CHAPTER 5<br />

Table 5.1-10 HAZOP Accident Scenario Ranking Page 12 <strong>of</strong> 13<br />

Accident Scenario # Node Deviation Consequence Qualitative<br />

Consequence<br />

Ranking<br />

(Table 5.1-6)<br />

Qualitative<br />

Frequency<br />

Ranking<br />

(Table 5.1-4)<br />

Prevention/Mitigation<br />

NC4<br />

LOC in the<br />

Transfer Cell<br />

or<br />

Underground<br />

14ACDEFG<br />

HI-1 Load<br />

facility<br />

canister into<br />

facility cask<br />

from<br />

Transfer<br />

Cell<br />

Same as<br />

RH4A<br />

NC4<br />

LOC in the<br />

Transfer Cell<br />

or<br />

Underground<br />

15ABC-1<br />

facility cask<br />

onto hoist<br />

Same as<br />

RH4A<br />

NC-4<br />

LOC in the<br />

Transfer Cell<br />

or<br />

Underground<br />

16ABCD-1<br />

facility cask<br />

transfer to<br />

disposal<br />

room<br />

Same as<br />

events RH4B<br />

NC-4<br />

LOC in the<br />

Transfer Cell<br />

or<br />

Underground<br />

17ABCD-1<br />

Cask<br />

emplaceme<br />

nt in bore<br />

hole<br />

Same as RH5<br />

NC5<br />

Explosion<br />

followed by<br />

fire in the Hot<br />

Cell<br />

9-2 Move<br />

empty<br />

facility<br />

canister into<br />

Hot Cell<br />

and Prepare<br />

facility<br />

canister<br />

Fire/explosion<br />

in Hot Cell<br />

while<br />

containing<br />

stored waste<br />

Potential for<br />

significant<br />

radioactive<br />

materials<br />

release<br />

4 4 Prevention: WAC - no flammable items<br />

in the drum, limits on gas generation;<br />

Limited storage.<br />

Mitigation: Procedures and Training;<br />

Ventilation system; Emergency<br />

response procedure; Shield plug in Hot<br />

Cell is in place; Shield door closed.<br />

5.1-46 January 22, 2003

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