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 - 7 Facility cask
lower shield
valve opens
while canister
is sitting on it
(at other than
desired time)
Control Loop
Failure
Potential to drop
canister to transfer
cell shield valve;
Potential for
equipment
damage;
Potential for
production
downtime
Lower shield valve interlock
with grapple position and
weight;
Interlock with transfer cell
shield valve;
Lock pins;
Pre-operational checks;
Preventive Maintenance
Program for control
equipment;
Canister design
NAI NA NA No release of
radioactive
material
7 - 8 High
contamination
on road cask
after canister
removed
Human Error-
Contaminated at
shipping site;
Canister breach
(loss of primary
confinement)
Potential for
spread of
contamination to
facility;
Potential for
contamination of
personnel
Shipping criteria;
HEPA filtration;
Transfer cell design;
Radiological control
procedures;
Cask head space sample taken
during Road Cask preparation
step
NAI 1,4 Facility Worker -
1,4
Onsite Worker - 1,4
Offsite - NA
Radiological
hazard only.
Minimal impact
to facility and
workers
7 - 9 Wrong canister
ID with respect
to shipping
papers
Human Error -
Generator Site
Error
Operational delay
(Negligible
impact);
Potential to
exceed storage
time limits for
canister
WIPP Waste Information
System procedures
NAI 1,4 Facility Worker -
1,4
Onsite Worker - 1,4
Offsite - NA
Radiological
hazard only.
Minimal impact
to facility and
workers
C-14 January 23, 2003