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 - 13 Unwanted
motion -
Facility cask
transfer car
moves while
rotating
Facility Cask
Human Error;
Mechanical
Failure
Potential
equipment
damage
Motion interlocks;
Equipment handler training;
Operating procedures for
Facility cask handling;
NAI NA NA No release of
radioactive
material
8 - Facility cask loaded onto conveyance
8 -1 Facility cask
transfer car
moved while
turntable
misaligned
(movement at
incorrect time)
Human Error
Equipment
Failure
Potential
equipment
damage -
turntable, facility
cask transfer car;
Potential for
process downtime
Mechanical design of transfer
car;
Limited speed;
Operator Training;
Transfer car movement
procedures;
Pre-operational checks;
Preventive Maintenance
Program
NAI NA NA No release of
radioactive
material
8 - 2 Cask loading
room door
damaged from
impact of
facility cask
transfer car
Human Error;
Equipment
Failure - Facility
cask drive
mechanism
Potential delay of
process;
Potential for
considerable
damage to facility;
Potential to lose
differential
pressure in some
areas of facility;
Potential for air
flow reversal
Operator Training/Procedures;
Preventive Maintenance
Program
NAI 1,4 Facility Worker -
1,4
Onsite Worker - 1,4
Offsite - 1,4
Minimal
radiological
hazard could
exist as the result
of the air flow
reversal if there
is contamination
present in the
facility
8 - 3 Incorrect
conveyance
position -
Conveyance
misalignment
at the collar
slab
Control Loop
Failure;
Equipment
failure
Inability to load
facility cask car
onto conveyance;
Potential for
damage to pivot
rails;
Minor equipment
damage
Pre-operational checks;
Preventive Maintenance
Program;
Equipment design;
Equipment Inspection
program
NAI NA NA No release of
radioactive
material
C-16 January 23, 2003