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

WIPP RH PSAR DOE/WIPP-03-3174 APPENDIX C
Table 1- 72B HAZOP Table
Study Node
Event No.
Deviation Causes Consequences Existing Safeguards Actions or
Recommendations
Total Rank
(Cons.,Freq )
Radiological Rank
(Cons.,Freq)
Comments
8 - 4 Incorrect
conveyance
position -
Conveyance
positioned at
station, facility
cask dropped
into shaft
Human Error
Major damage to
shaft;
Potential breach
of container;
Potential for
major release of
radioactive
materials;
Potential for
significant
radiological
exposure to
personnel;
Potential for
considerable
impact offsite;
Potential worker
injury or fatality
Pivot rail stops;
Car stops;
Training/Procedures
Shift to HEPA filtration
Physical barriers-shaft gates;
Limited speed of Facility cask
transfer car;
Redundant verification of
equipment readiness;
Pivot rails interlocked to hoist
position (hardwired);
Cask unloading room doors
NAI 4,4 Facility Worker -
4,4
Onsite Worker - 4,4
Offsite - 4,4
Worker injury or
fatality could
result from the
industrial
accident
(dropped cask).
Radiological
release would
likely be
extensive
8 - 5 Farther than
desired
position -
Facility cask
transfer car
over- traveled
onto
conveyance
Human Error
Potential
equipment
damage
Power cable length is limited;
Facility cask movement
procedures;
Pivot rail alignment;
Door interlocks;
Automatic stop - Facility cask
transfer car
NAI NA NA No release of
radioactive
material
C-17 January 23, 2003