ML19305A456
| ML19305A456 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/07/1979 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| GQL-0713, GQL-713, NUDOCS 7906120373 | |
| Download: ML19305A456 (4) | |
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Metropohtan Edison Company lI Post Ctfice Bcx 542 Reaong Pennsyivania 19603 215 929-3601 i
J June 7,1979 GQL 0713 Director of Nuclear Reactor Regulation Attn: R. W. Reid, Chief Operating Reactors Branch No. k U.S. Nuclear Regulatory Commission Washington, D. C. 20555
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Unlabeled Fire Doors Our letter of December 1,1978 (GQL 1919) described the results of the documentation search that was conducted by Met-Ed in an effort to determine the fire resistance rating of unlabeled fire doors installed at TMI-1.
The purpose of this letter is to convey the results of a field survey of the subject doors that was conducted as a result of a January 29, 1979 telecon with members of your staff.
Attached please find a copy of our consultant's report (Gilbert / Common-vealth letter of March 8,1979, GAI/TMI-lCS-2h77). The locations of the doors are indicated on the TMI-l Fire Hazards Analysis Drawings (E-023-00h, -016, and -017) forwarded with GQL 1919 Met-Ed intends to leave the following doors in place, as is: D-108, C-1, C-202, C-20h, C-205, C-206, C-303, C-30h, C-306, C kok, and C-503 Door C-1 is the "B" label door shown on E-023-017 at the 285 ' elevation.
Please note that Door C-30h was incorrectly described in GQL 1919 as an oversize door constructed to "A" label requirements.
It is a standard size "B" label door, and it is considered to provide an adequate fire barrier for its location as currently installed.
I Door C-124, a roll-up door equipped with a wicket, has been re-evaluated since GQL 1919. The ccor vill be replaced with a rated door and frame assembly and a suitab]y constructed vall.
Sii Metreco!: tan Edson Company is a Member of the General Pue! c Utees System 790612037p(
June 7, 1979 R. W. REID 2-GQL 0713 F
For the following doors, Met-Ed intends to replace the frame but re-use the doors and hardware: C-207, C-307 C-312, and I-101.
Doors C-103, C h03', and C h23 have been replaced with bullet resisting doors,' certified to meet "A" label fire resistance requirements, asipart
' of the Security Program. Door C-103 is the door shown on Drawing '
E-023-017 as the "B" label door between the Control Building area CB-1 and the Control Building stairwell.
As stated in GQL 1919, Met-Ed intends to replace doors and frames C-131, C kl5, C h18, and S-157 with assemblies bearing the UL "A" label.
Met-Ed seeks NRC concurrence with the above proposed action.
Sincerely, f
J.' G. Herbein
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Vice President Generation JGH:WSS:mrm Attachment O
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<a Gilbert / Commonwealth engineers.no consuitants 3
GILBERT ASSOCIATES, INC., P, O. Box 1498, Reading, PA 19603/Tel 215 775-2S00/ Cable Gilasoc/Telen 836 431 March 8,1979 GAI/TMI-lCS-2477 i
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Mr. R.M. Klingaman Manager Generation Engineering Metropolitan Edison Company P.O. Box 542 Reading, Pennsylvania 19640 Re: Three Mile Island Nuclear Station Unit 1 Fire Hazard Analysis Scope Item 12 GAI W.O. 044692-094
Dear Mr. Klingaman:
We have completed our study on the unlabeled fire doors at the
~ ect location and submit the following comments:
1.
Access door D-108 between the two fire areas within the diesel generator building is listed on GAI drawings, and the manufacturer's shop drawings as U.L. Class "A" fire doors and frame. We have reviewed and field inspected these doors and frames and find that the hiactive door and frame are provided with U.L. Class "A" labels.
The active door is not provided with a U.L. Claas "A" label. Based on our review and field observations it is our opinion tnat the doors and frame assembly meet the requirements for a U.L. Class "A" rating and the fire hazard analysis report.
2.
Stairwell doors in the control building C-1, C-205, C-206, C-303, C-304, C-404, and C-503 are listed on GAI drawings, and the manufacturer's shop drawinrs as U.L. Class "B" doors and frames.
Based on our review and field observations it is our opinion that the door and frame assemblies meet the requirements for a U.L. Class "B" rating and the fire hazard analysis report.
Please note that a fire in the fuel handling building would have to pass through two U.L. Class "B" - 115 hour0.00133 days <br />0.0319 hours <br />1.901455e-4 weeks <br />4.37575e-5 months <br /> fire resistance rating doors to spread through the stairwell to the control building.
3.
Doors C-202 and C-204 are listed on GAI drawings and the manufacturer's shop drawings as being "A" label construction. The door frame anchors are indicated on GAI drawings and the manufacturer's shop drawings as the " hat" type, No. 9396, and are welded _to the frames at the factory.
The door f rames are also stitch welded to the three hour fire resistance rated metal partitions and girt support system.
525 tancaster Annue. Reaceg. PA / Morgantown Acad Green Kas. Reede3, PA 215 775252) 209 fast wasW.an Avew. Jackson. MI 517 7843000 / 80 Pee Street.New York. NY 212 422@77 t
R.M. Kling man CAI/TMI-lCS-2477 j*>Gabert/ common ich -
March 8,1979 Page 2 run ezcau w, a e-wa a n sente rs manc wt sse The term "A" label construction means that the doors and frames were i
constructed in accordance with U.L. "A" label requirements but the size of the door and frame prohibits the manufacturer from attaching a label.
Based on enr review and field observations it is our opinion that the doors and frame assemblies meet the requi'rements for a U.L.
Class "A" rating and the fire hazard analysis report.
4.
Doors I-101, C-207, C-307 and C-312 were fabricated in accordadce with U.L. Class "A" requirements. The door frames do not meet U.L.
requirements because a typical door frame was removed and no frame anchors could be found..Therefore it is assumed that the four subject door frames are the same and will have to be replaced with U.L. rated frames. Based on our review and field observations it is our opinion that all the doors meet the requirements for a U.L. Class "A" ratir; and the fire hazard analysis report.
5.
Door C-306 was fabricated in accordance with U.L. Class "A" requirements.
Based on our review and field observations it is our opinion that the doors and frame meet the requirements for a U.L. Class "A" rating and the fire hazard analysis report.
6.
Doors C-103,C-403 and C-423 are security doors and are to be certified to meet a U.L. Class "A" rating.
Very truly yours, m%.
C.J. Zimmerman Registered Architect
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W.A. Brannen, P.E.
Registered Fire Protection Engineer CJZ/WAB:daf cc:
R.M. Klingaman R.R. Lefin I.R. Reed K.R. Gable l
R.C. Noll R.J. Stevens l
T.A. O'Connor R.M. Rogers P.J. Shipper I
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