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
7 - 10 Hydraulic fluid
fire
Leak of
hydraulic fluid
from facility
cask rotating
device;
Unknown
Ignition Source
Potential for
damage to facility
cask and other
equipment (air
hose, power
cables);
Potential adverse
impact to
ventilation
system;
Potential for
generation of
toxic fumes;
Potential worker
injury from smoke
inhalation
Limited quantity
(approximately 40 gallons) of
hydraulic fluid;
Smoke alarms;
Sprinkler system;
Evacuation plan for Facility
Cask loading room;
Emergency exit from Facility
Cask loading room;
Sump in room
R-14 Add
combustible
loading limits for
waste handling
building to FHA
4,4 Facility Worker -
4,4
Onsite Worker - 4,4
Offsite - 4,4
Facility worker
injury could
result from
smoke inhalation
(industrial
accident).
Minimal
potential for
radiological
impact.
7 - 11 Incorrect
sequence -
Cask is rotated
to horizontal
position before
shield valves
are closed with
grapple still
attached
Control Loop
Failure
Potential for direct
radiological
exposure to
personnel
Interlocked to grapple hoist
position;
Grapple design will not
release;
Physical restraints to keep
canister in place;
Pre-operational checks for
control system;
Preventive Maintenance
Program for control system;
Shielding for operator at
control panel
R-15 Verify
rotating equipment
design will
preclude
radiological
exposure as a result
of this event.
1,4 Facility Worker -
1,4
Onsite Worker - 1,4
Offsite -NA
Radiological
hazard only.
Minimal impact
to facility and
workers
7 - 12 Excessive
movement -
Facility cask
rotates freely
during rotation
to horizontal
position
Human Error;
Mechanical
Failure
Potential
equipment
damage
Pre-operational checks for
rotation equipment function;
Mechanical design of facility
cask transfer car prevents
over-rotation;
NAI NA NA No release of
radioactive
material
C-15 January 23, 2003