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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 1 <strong>of</strong> 13<br />

Accident Scenario # Node Deviation Consequence Qualitative<br />

Consequence<br />

Ranking<br />

(Table 5.1-6)<br />

72-B Cask<br />

Qualitative<br />

Frequency<br />

Ranking<br />

(Table 5.1-4)<br />

Prevention/Mitigation<br />

RH1<br />

Fire in the<br />

Underground<br />

9-7 Facility<br />

cask<br />

transfer to<br />

disposal<br />

room<br />

Diesel fire on<br />

forklift<br />

Potential for<br />

significant<br />

radioactive<br />

materials<br />

release<br />

4 4 Prevention: Administrative Controls on<br />

fuel transfer and hot work permit.<br />

Mitigation: Vented canister, Fire<br />

suppression system (on forklift),<br />

Underground ventilation system, Mine<br />

worker training, Mine evacuation plan.<br />

RH1<br />

Fire in the<br />

Underground<br />

10-2<br />

Canister<br />

placement<br />

in borehole<br />

Hydraulic<br />

fluid/diesel<br />

fuel fire<br />

Potential for<br />

significant<br />

radioactive<br />

materials<br />

release<br />

4 4 Prevention: Administrative Controls on<br />

fuel transfer and hot worker permit.<br />

Mitigation: Vented canister, Fire<br />

suppression system (on forklift and<br />

HERE), Underground ventilation<br />

system, Mine worker training, Mine<br />

evacuation plan.<br />

RH2<br />

Fire in the<br />

WHB<br />

7-10 Load<br />

canister into<br />

facility cask<br />

Hydraulic<br />

fluid fire<br />

Potential for<br />

significant<br />

radioactive<br />

materials<br />

release<br />

4 4 Prevention: Administrative Controls on<br />

fuel transfer and hot worker permit.<br />

Mitigation: Limited quantity (app. 40<br />

gallons), Thermal detection alarms,<br />

Sprinkler system, Sump, Evacuation<br />

plan, Emergency exit.<br />

RH3<br />

LOC in the<br />

WHB<br />

7-1 Load<br />

canister into<br />

facility cask<br />

Excessive<br />

movement -<br />

Shuttle moves<br />

while crane is<br />

lifting canister<br />

Potential for<br />

significant<br />

radioactive<br />

materials<br />

release<br />

4 4 Prevention: Program for Shuttle and<br />

control equipment, Pre-op checks, PM<br />

program, Grapple hoist interlock.<br />

Mitigation: Limited access into<br />

Transfer Cell, Building Exhaust HEPA<br />

filtered, Emergency response plan and<br />

teams.<br />

5.1-35 January 22, 2003

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