ML20195E453
| ML20195E453 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 05/30/1986 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| SBN-1078, NUDOCS 8606090082 | |
| Download: ML20195E453 (4) | |
Text
. _ _ _ _ _ _ _
SEABROOK STATION Engin:sring Office May 30, 1986 Public Service of New Hampshire SBN-1078 T.F.
B4.2.7 NEW HAMPSHIRE YANKEE DIVISION United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attention:
Mr. Edward C. Wenzinger, Chief Projects Branch 3 Division of Reactor Projects
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) USNRC Letter, dated April 29, 1986, " Inspection Report No. 50-443/86-12", E. C. Wenzinger to R. J. Harrison Subj ect :
Response to Inspection Report No. 50-443/86-12
Dear Sir:
Our response to the violations reported in the subject inspection is provided in Attachment 1, included herewith.
The corrective action was completed during the week of May 12, 1986.
Very truly,yours, nf John DeVincentis Director of Engineering Attachment cc: Atomic Safety and Licensing Board Service List n86988MM88)h3 A
Seabrook Station Construction Field Office. P.O. Box 700 Seabrook. NH O3874 yg -o lI (
2 Y
f.
M 2
Dieno Curren. Esquire Colvin A. Cennog 4
Harmon & Weiss City Manager d
2001 S. Street, N.W.
City Hall
-5 Suite 430 126 Daniel Stredt w
Washington, D.C.
20009 Portsmouth, NH 03801
]
=
Sherwin E. Turk, Esq.
Stephen I. Morelli Esquire 3
Office of the Executive Legal Director Attorney General
- j U.S. Nuclear Regulatory Comunission George Dana Bisbee, Esquire 3
Tenth Floor Washington, DC 20555 Assistant Attorney General 6
office of the Attorney General d
25 Capitol Street a
Robert A. Backus Esquire Concord, NH 03301-6397 J
116 Lowell Street M
P.O. Box 516 Mr. J. P. Nadeau
_5 Manchester, NH 03105 Salectmen's office M
10 Central Road 4
Philip Ahrens, Esquire Rye, NH 03870 7
Assistant Attorney General Department of The Attorney General Mr. Angie Machiros
'2ig Statehouse Station M Chairman of the Board of Selectmen d
hugusta, NE 04333 Town of Newbury 6
Newbury, MA 01950 M
Mrs. Sandra Cavutis Q
Chairman, Bosed of Selectmen Mr. William S. Lord M
RFD 1 - Box 1154 Board of Selectmen l
Kennsington, NH 03827 Town Hall - Friend Street 8
Amesbury, MA 01913
_s.
Carol S. Sneider, Esquire X
Assistant Attorney General Senator Cordon J. Humphrey
=F Department of the Attorney General 1 Pillsbury Street
~g One Ashburton Place, 19th Floor Concord, NH 03301 g
Boston, MA 02108 (ATTN: Herb Boynton)
_g S
Senator Cordon J. Humphrey H. Joseph Flynn Esquire
_==e_
U.S. Senate Office of General Counsel M
- Washington, DC 20510 Federal Emergency Management Agencyg E
(ATTN: Tom Burack) 500 C Street, SW N
Washington, DC 20472 Richard A. Hampe. Esq.
Hampe and McNicholas Paul McEachern, Esquire N
35 Pleasant Street Matthew T. Brock, Esquire Concord, NH 03301 Shaines & McEachern g
25 Maplewood Avenue a
Donald E. Chick P.O. Box 360 N
Town Manager Portsmouth, NH 03801 Town of Exeter siii_
10 Front Street Cary W. Holmes, Esq.
-6 d
Exeter TH 03833 Holmes & Ells 47 Winnacunnet Road Brentwood Board of Selectmen Hampton, NH 03841 A
RFD Dalton Road Brentwood, NH 03833 Mr. Ed Thomas FEMA Jtegion I Peter J. Mathews, Mayor 442 John W. McCormack PO & Courthouse City Hall Bosto'n, MA 02109
.-d Newburyport, MA 01950 M:
Stanley W. Knowles, Chairman Board of Selectmen y
P.O. Son 710 mm North Hampton, NH 03862 3
dF
i
"/
SBN-1078 ATTACHMENT 1 NRC Notice of Violation (43/86-12-01) 10CFR50, Appendix B, Criterion !II and the Seabrook Station FSAR, l
Section 17.1.1.3, require that measures be established to assure that applicable regulatory requirements and the design basis for safety-1 related structures, systems, and components are correctly translated
{
into specifications, drawings, procedures, and instructions. FSAR 1
Section 6.2.3 states that the Containment Enclosure Emergency Cleanup l
System "is capable of reducing the containment enclosure pressure to negative 0.25 inches (wc)" and of " processing the atmosphere of-the containment enclosure space".
It further states that.the containment boundary welds of the main steam, feedwater, and steam generator blow-
.down lines are included within the containment enclosure. UE&C Speci-i fication 236-11 states, in part,.that the Containment Enclosure Emer-gency Exhaust Units " serve to exhaust radioactively-contaminated air 4
from the containment enclosure area during emergency conditions and to l
remove particulate material and radioactive iodine gas from the air prior to it being exhausted to the atmosphere".
UE6C drawings F-805052 and 101453 and Foreign Prints 18032 and 18033 (P.O. 12-04/5) identify pressure seal plates in both the East and West Main Steam and Feedwater Chases as extensions of the containment enclosure.
l' Contrary to the above, as of February 3, 1986, no design document trans-lated the requirement that the air space behind the pressure seal plate l
be made part of the containment enclosure. This design failure resulted in the construction of a space within the containment enclosure (as defined by the above UE&C drawings and foreign prints), which would not be reduced to a negative 0.25 inches (wc) pressure during emergency 1
j conditions and which would not be vented through the Containment Enclosure Emergency Exhaust Units.
Thus, the inspector observed on February 19, 1986 the installation of the pressure seal plates in both steam and feedwater chases with no provision for venting the air space behind them so that their atmosphere would be processed.by the Containment Enclosure Emergency Air Handling System.-
j l
This is a Severity Level IV Violation (Supplement II).
I
Response
I We concur that, as of February 3,1986, the subject areas had been con-j structed'such that they could not be processed-by the Containment l
- Enclosure Emergency Air Handling System.
This violation is the result of an oversight between interf scing engi-l neering disciplines in not detailing all of the required s aformation.
l in the installation details. The potential for similar unique con-tainment enclosure volumes has been evaluated for similar circumstances.
None were'found to exist. This is considered an isolated occurrence.
To preclude recurrence, an appropriate management directive was -issued to ' mphasize the importance of the interdisciplinary review.
e i
i i
i t.
~
SBN-1078 ATTACHMENT 1 (continued)
Corrective Action In addition to the actions described in the response, ECAs have been issued to provide vent paths (i.e., core bores in walls) between the subj ect areas and the containment enclosure. As a result, the subject areas can now be reduced to a negative 0.25 inches (wc) pressure during emergency conditions and can be vented through the Containment Enclosure Emergency Exhaust Units.
Corrective action was completed during the week of May 12, 1986.
I I
4 9
1 l
~ -
~-<n..-
n v
a
,,.