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

WIPP RH PSAR DOE/WIPP-03-3174 APPENDIX C
Table 2- 10-160B HAZOP Table
Study Node
Event No.
Deviation Causes Consequences Existing Safeguards Actions Total Rank
(Cons., Freq)
Radiological Rank
(Cons.,Freq)
Comments
12E-3 Inadvertent
movement of
crane
(east/west)
while lowering
WIPP Canister
into Transfer
Cell
Mechanicalelectrical
failure
or control
system failure;
Human error
Potential for
breach of drums;
Potential to spread
contamination;
Potential for
offsite/onsite
consequences;
Potential for
facility damage;
Potential for
shuttle car
damage;
Potential to shut
down RH
operations.
Crane and shield valve
interlock;
Torque limiter on shield valve
motor;
Preventive Maintenance
Program on crane;
Design of canister;
Emergency stop in crane.
NAI 4,4 Facility Worker -
4,4
Onsite Worker - 4,4
Offsite - 4,4
Radiological
Hazard Only
12E-4 Inadvertent
movement of
the shuttle car
with the WIPP
Canister
partially
lowered
Mechanicalelectrical
failure
or control
system failure
(shuttle car
failure); Human
error;
Interlock failure
(shuttle car is
interlocked with
shield valve).
Potential for
breach of drums;
Potential to spread
contamination;
Potential for
offsite/onsite
consequences;
Potential for
facility damage;
Potential for
shuttle car
damage;
Potential to shut
down RH
operations.
Variable speed drive motor
controller (limits motor current
and stops motor when shuttle
is obstructed);
Preventive Maintenance
Program on shield
valve/shuttle car interlock;
Canister design;
Drive train on shuttle car -
belts will slip;
Interlock between shuttle car
and shield valve.
NAI 4,4 Facility Worker -
4,4
Onsite Worker - 4,4
Offsite - 4,4
Radiological
Hazard Only
C-55