ML20044A608
| ML20044A608 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 04/20/1990 |
| From: | NRC |
| To: | Udall M HOUSE OF REP., INTERIOR & INSULAR AFFAIRS |
| Shared Package | |
| ML20044A601 | List: |
| References | |
| CCS, MYERS-900420, NUDOCS 9006290273 | |
| Download: ML20044A608 (2) | |
Text
_
- e
-p a
'4.
Attachment 3-Question 3:
l l
If the computer files did not contain such information in retrievable form, I
what use are such files to tre licensee or to anyone else?
Response 3:
The computer listings that were generated were all created from the licensee's Change Document Tracking (CDT) data base.
The Change Documerit Tracking program was utilized during the latter portion of the construction period to provide a computer aided-system of design change document control.
The CDT program re-lative to Pullman-Higgins nonconformance reports is no longer active, but it still provides a historical record of certain information relative to gene-ral design document status and reference information.
During an inspection of j
l the Seabrook Design Change Control program in 1985,.the CDT system was re-l I
viewed, as documented in inspection report 50-443/85-15, section 5.6 (excerpt attached). At the present time, a major use of the CDT system is to provide a j
complete reference of affected documents that rcquire revision based upon cur-1 l
rent design changes.
However, because of.the annotated descriptive titles relative to the design change documents filed in the computer, a review of the l
l complete document (e.g., nonconformance report) would be necessary to determine the nature of the identified issue, its disposition and any associated design 1
L change.
i l
L b
i i
L i
l l
l l
L i
l l
l l
l 1
9006290273 900529 PDR ADOCK 05000443 H
PDC 1
1
603 474-9018 MdYi01'9012:39 SEABROOK RESIDENT HRC P02 I-
. ATTAcenENT T0. RESPONSE 3 PRC Rsmos r us9EcTto H R EPORT 50- 4 4s/'es-isq Seeb F,6 (Me: unb co n Ated M June, M BS) 5.6 Change Document Tracking System The licensee has implemented a new tracking system for design changes. This system, identified as Change Document Tracking.(CDT),
is one subsystem of the Seabrook Construction Information System (CIS).. Other subsystems include:
Project Completion / Incomplete Items System, Hanger Status System, and Unit Cost System. CDT allows an individual to identify outstanding and historical design changes affecting a particular drawing, specification, or other design docu-ment because the design change documents are indexed to the design-o documents.
CDT tracks design incorporation, field work completion l
(for NCRs), and general design document status, y
In order to assure the quality of the system, CDT has been developed in a manner that prevents anyone other than the responsible data-entry individuals from changing and/or adding to_the data base. Data-entry and changes to the data base have been assigned to a limited number of people onsite.
However, retrieval of data has been made available to anyone onsite requiring such information. CRT terminals are located throughout the site.
In the event CDT is down, provis L
ions have been made to continue operation using a manual loggin -
system. Also,' hardcopy printouts of CDT: data are maintained at al drawing stations with updates to the printout being made on a weekly basis.
l Throughout this inspection, the inspector used the CDT to retrieve data on the RHR, SI, and DG JCWS.
The-inspector found the system l
easy to understand and use. However, the inspector did note that CDT~
~
is still being updated with historical data. Untti this historical data has been entered into the data base and further debugging of the -
system is completed, individuals cannot rely solely on CDT to provide them with all the pertinent design change information.
The inspector identified no discrepanciest I-
.g..,
n
,-