ML19247A955
| ML19247A955 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 06/05/1979 |
| From: | Bryant J, Miller W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19247A945 | List: |
| References | |
| 50-416-79-10, 50-417-79-10, NUDOCS 7908030606 | |
| Download: ML19247A955 (8) | |
See also: IR 05000416/1979010
Text
{{#Wiki_filter:[ga arcg 'o, UNITED STATES ' NUCLEAR REGULATORY COMMISSION l' $,p 'j,'[r/' % , < . $ REGION 11 c; "g ! [ 101 MARIETT A sT., N.W., sulT E 3100 AT L ANT A, G E ORGI A 30303 ' 'N,. j' ....+ Report Nos. 50-416/79-10 and 50-417/79-10 Licensee: Mississippi Power and Light Company Jackson, Mississippi 39205 Facility Name: Grand Gulf Nuclear Station, Units 1 and 2 Docket Nos. 50-416 and 50-417 License Nos. CPPR-118 and CPPR-119 Inspection at Gran Gulf site n ort Gibson, Mississippi inspector: [/[ 8 W, b 7[[ W. H. Miller, Jr. / Date Signe'd ' , - g/ 79 Approved by: ,'Cf Brya_ , Section Chief, RCES Branch Date 'igned SUPDiARY Inspection on May 7-10, 1979 Areas Inspected This routine, unannounced inspaction involved twenty five inspector-hours on site in the area of fire protection / prevention. Results Of the area inspected, no appa-ent items of noncompliance were identified; four apparent items of deviation were found (substandard fire pump suction piping (Para- graph 5.a); Unapproved fire doors in fire barriers of fire pump house (Paragraph 5.b); Substandard sprinkler systems for fire pump house (Paragraph 5.c) and for Unit I diesel generator building (Paragraph 5.d); and, Smoke detection systems installation deficiencies (Paragraph 5.e). 421 271 (3 7 90 80 3W- 4)
. DETAILS 1. Persons Contacted Licensee Employees T. E. Reaves, Jr. , QA Manager
- P. W. Sly, QA Field Supervisor
J. Richardson, Operations Supervisor
- J. C. Fuller, QA Representative
- D. E. Mahoney, QA Representative (Mech)
- B. C. Lee, QA Representative (Elec)
- W. M. Garner, QA Representative (Civil)
Other Organization (Bechtel Power Corporation)
- J. W. Yelverton, QA
- M. L. Rayfield, Resident Engineer
- E.
F. Lewis, Contracts
- J. R. Valdez, QA Engineer
- T. W. Habgrmas, Project Field Engineer
- E.
F. Lewis, Contracts D. B. Brimmer, CTO R. Mohl, Sub-Contract Administrator
- R. L. Taylor, Safety Representative
S. Mechatto, Lead Records, QC Engineer J. L. Trimmell, Procurement
- Attended exit interview
2. Exit Interview . The inspection scope and findings were summarized on May 10, 1979, with those persons indicated in Paragraph I above. The deviation items were discussed in detail, and the licensee advised that tuese items would be evaluated. However, a commitment for corrective action was not given. 3. Licensee Action on Previous Inspection Findings Not inspected. 4. Unresolved Items Unresolved items are matters about which more information is required to determine whether they are acceptaole or may involve noncompliance or deviations. New unresolved items identified during this inspection are discussed in paragraphs 5, 6 and 7. 421 272 9
-2-
5. Plant Fire Protection Systems An inspection was made of the permanent plant fire protection system instal- lations in the fire pump house, diesel generator building, control room, computer room and fire barrier penetrations between the turbine building and control building. Although these installations were not complete the following discrepancies were noted: a. Fire Pumps The eccentric tapered reducer in the suction piping to the west fire pump was not installed in accordance with the requiremerts of National Fire Protection Association Standard No. 20 (STPA-20) " Centrifugal Fire Pumps". The reducer was installed with the flat surface on the side instead of on top. The existing installation could result in the formation of an air pocket in the suction pipe which could impair the operation of the pump. The licensee's FSAR, Appendix 9A, Table 1 Item E.2.c states that the fire protection system installations will meet L5' requirements of NFPA-20. Details of the proper installation of fim pumps, including the arrangement of suction piping, are provided by Section 3-3.5.5 of NFPA-20. The irrproper installation of the reducer in the suction piping to the west fire pump appears to deviate from the licensee's FSAR commitments and is identified as Deviation Item 416/79-10-01 and 417/79-10-01, " Substandard Fire Pump Suction Piping" b. Fire Pump House - Fire Barriers The licensee's FSAR, Appendix 9A, Table 1 Items D.2.j and E.2.c state that a three hour fire barrier with openings protected by three hour fire doors will be provided between each fire pump. A three hour fire barrier was being constructed betwe,en each fire pump; however, the openings in the fire barriers were provided with non-fire rated doors in non-fire rated f rames. The failure to provide an approved fire door installation for the openings in these fire barriers appears to deviate f rom the licensee's FSAR commitments and is identified as Deviation Item 416/79-10-02 and 417/79-10-02 " Unapproved Fire Doors in Fire Barriers of Fire Pump House". Fire Pump - Automatic Sprinkler System c. The automatic sprinkler system installation for the two diesel engine driven fire pump rooms did not provide complete coverage for these only installed directly over the diesel rooms. These systems were engines and fuel tanks resulting in approximately 1/3 of each room being unsprinklered or unprotected. The alarm valve and supply piping to these systems were installed in an unsprinklered room containing the electric mot or driven pump. 421 273
' -3- The licen ee's FSAR, Appendix 9A, Table 1, Ite.m E.3.c states that the automatic sprinkler system installations will adhe.e to the requirements of hTPA-13, " Sprinkler Systems" hTPA-13 indicates that a sprinkler system installation should provide complete 100% coverage for the area or space that it is installed to protect. Partial installations for areas or rooms containin); flammable or combustible liquids are specifi- cally not recommended unless the sprinklered area is separated from the unsprinklered area by fire walls. Furthermore, hTPA-13 advises against the installation of sprinkler piping, control valves, and related equipment in unsprinklered areas unless these areas are per- mitted by the standerd to be unsprinklered. Th.'s substandard sprinkler system installation appears to deviate from the licensee's FPR commit- ments and is identified as Deviation Item 416/79-10-03 and 41~/. ~9-10-03, " Substandard Sprinkler Installation for Fire Pump House ant 9isel Generator Building". d. Diesel Generator Building - Sprinkler Systems Pre-action type sprinkler systems were being installed within the diesel generntor building. The design of these systems provides sprinkler coverage only for the ceiling portion (172 foot elevation) of each gene- Protection is not to be provided beneath the 14 foot vide rator room. mezzanine located at the 158 foot elevation. Each generator room is approximately 35 feet wide which means that the mezzanine would create an obstruction to the sprinkler discharge in the event of fire for approximately 1/3 of the generator room. The licensee"s FSAR, Appendix 9A, Table 1, Item E.3.c states that the sprinkler system installations will adhere to the requirements of hTPA-13, " Sprinkler Systems". The area beneath the mezzanine contains mechanical and electrical equipment and the diesel fuel day tanks which are required by hTPA-13 to be provided with sprinkler protection. Also, the sprinkler system to each room will be manually activated from an actuation device to be located on the exterior of the building. NFPA-13 requires that a building sprinkler system provide complete protection and operate automatically. The lack of complete sprinkler protection for each of the three Unit I diesel generator rooms is another example of Deviation Item 416/79-10-03, and 417/79-10-03, "Substandards Sprinkler System Installation for Fire Pump House and Unit 1 Diesel Generator Building." The non-automatic design of the diesel generator building sprinkler systems does not conform to NRC Regulatory Guide 1.120 nor to the requirements of NFPA-13. This item is identified as Unresolved Item 416/79-10-04, " Evaluation of Manual Sprinkler System for Diesel Generator Building", pending further evaluation by NRC/NRR. e. Fire Detector Systems The fire detection systems being installed for the diesel generator building, above the control room and in the computer room of the 421 274
-4- , coatrol building were inspected. Appendix 9A, Table 1, Item E.1.a of the licensee's FSAR states that the automatic fire detection system installations will adhere to the requirements of hTPA-72E, " Automatic Fire Detectors". It appeared that the fire detection systems were being installed in accordance with the design documents. However, the location and spacing of the smoke detectors did not meet the criteria of hTPA-72E. Apparently, the design of the smoke detector systems was based on smooth ceiling with low height and no ventilation conditions. These situations do not exist in the locations identified due to obstructions created by mechanical and electrical equipment, st ructural beams, mezranines, ventilation systems, etc. NFPA-72E gives specific design requirements for installation of smoke detectors in areas which contain conditions that could result in a delayed activation of the alarm system. The smoke detector installation for the diesel generator building, above the control room cnd in the computer room provides inadequate or excessive spacing per detector. This conditions could result in a delayed alarm in the event of a fire. These substandard smoke detector system installations appear to deviate from the licensee's FSAR commit- ment and are identified as Deviation Item 416/79-10-05, " Smoke Detection Systems Installation Deficiencies". f. Fire Barrier - Turbine / Control Buildings The " Overly" pressure and blast type doors installed between the turbine building and the hot machine shop and between the turbine building and the corridor of the control building did not appear to have a fire resistant rating. '1here was no label on these doors and no data avail- able at the site to indicate that these doors had been fire tested and approved by a nationally recognized laboratory. The licensee stated that the fire rating certification data on these doors was located at the contractor's (Bechtel) headquarters. A copy of this data was requested to be sent to NRC Region II for review. The licensee's FSAR Appendix 9A, Table 1, Items D.2.j and F.8 state that the doors between the turbine and control buildings will be 3-hour fire doors which have been tested and approved by a nationally recognized laboratory. This item is identified as Unresolved Item 416/79-10-06 and 417/79-10-04, " Fire Rating of Doors Between Turbine and Control Buildings," pending receipt and review of the data on these doors. Other than deviations outlined above , within the area inspected no additional deviations or items of noncompliance were identified. 6. QC Records Storage The QC inspection records and other construction record data are stored in the contractor's QC records storage file room. This room is separated from the remainder of the building by 8-inch masonry block walls and from the floor above by a concrete floor on non-fire rated steel supports. 421 275
-5- ' The door openings into the file room are provided with " Class A", non-self clocing fire doors. A 24 X 32 inch ventilation opening and air conditioning duct penetrations in the fire barrier (s) are not equipped with fire dampers. The uprotected wall penetrations and the lack of closers on the fire doors seriously reduce the value of the fire rated enclosure for the file room. A smoke detection system is provided for the file room but an automatic fire suppresion system is not provided. The AC power supply to the clarm system does not meet the criteria of hTPA-70, " National Electrical Code" or the hTPA-72 Series for various types of fire alarm systems in that the power supply is not ahead of the irsin service panel and the circuit supplies other electrical equipment (water cooler). The QC records storage room does not meet the requirements of ANSI Standard N45.2.9, " Requirements for Collection, Storage, and Maintenance of Quality Assurance for Nuclear Power Plants" or Iegulatory Guide 1.88, " Collection, Storage and Maintenance of Nuclear Power Plant Quality Assurance Records", both of which require record storage facilities to meet the criteria of hTPA-232, " Record Protection" for protection of " vital" records. In , general, hTPA-232 requires vital records to be stored in a facility construc- ted and provided with sufficient protection to assure that the records will be preserved even if there is a complete burn-out of the section of the building in sbich the records are located. Presently, the licensee apparently does not have a commitment with the NRC a records storage facility meeting the ANSI N45.2.9 or current to provide NRC requirements. This criteria apparently did not exist at the time the construction permit for the plant was issued. Therefore, this item is being identified as Unresolved Item 416/79-10-07 and 417/79-10-06, "QC Records Storage Facility" pending further review by the licensee and the h7C . 7. Construction Site Protection / Preventive Program The licensee's fire protection / preventive program for the construction site has been delegated to the site contractor (Bechtel) to prepare the necessary procedares covering fire brigade organization and training, fire protection equipment inspection and maintenance, and control and safeguards for welding and burning operations. The contractor's procedures covering these items were reviewed and found to be adequate. Also, a tour was made of the site to determine if these procedures were being followed and to observe the various construction fire protection / prevention features and the construc- tion operations and safcguards provided. The results of the tour are provided below: a. Fire Brigade The site fire brigade for the first aud second shift is composed of various contractor site employees. On third shift, weekends and holidays the fire brigade duties are assumed by the security guard force. An up-to-date fire brigade roster is maintained in the site 421 276
. -6- ' safety office. A review of this roster indicated that 32 people on the first shift and 39 people on the second shift were assigned to the fire brigade. The security force has approximately 20 employees assigned to the third shift, most of whom could be available for fire fighting operations if required. The contractor's procedure, " Fire Brigade Organization and Training Procedure" dated July 27, 1978, requires that training for all of the fire brigade members from the contractors work force be conducted monthly. A review of the training records indicate that training sessions were only conducted in March, April, and December in 1978. No drills or training had been recorded for 1979, except the most recent training for the security guard force which was conducted in Janua ry 19.'e . The above listed fire brigade procedure did not indicate s the training frequency for the security force; however, a quarterly frequency has been established. A contractor's safety department representative advired that the procedure will be revised in the near future to incorporate this specified training f requency. The licensee does not have a commitment to the NRC to maintal: an ade- quately trained construction site fire brigade; however, the licensee advised that appropriate action will be taken to assure the following: monthly training sessions will be conducted for the contractor manned fire brigade; quarterly fire brigade training sessions will be conducted for the security force; and, adequate records indicating the date of training, type of training and attendance will be maintained. b. Fire Protection Systems and Equipment The contractor's procedure, " Fire Equipment Maintenance Procedure" dated September 20, 1978, was reviewed and found adequate. However, the inspection and maintenance of the fire hydraats and outside control valves for the Unit 1 portion of the fire protection systcms and the fire pumps are to be turned over to the licensee by the end of May (prior to June 1, 1979). A plant procedure covering the inspection, test and maintenance requirements for these sytems had not been prepared by the licensee as of May 10, 1979. The licensee advised that a plant procedure will be prepared prior to the take over of these systems. This is identified as Inspector Follovup Item 416/79-10-08 " Inspection, Test and Maintenance of of Fire Protection Systems", pending the review and evaluation of the proposed procedure. A total of 12 fire extinguishers, four fire hyrants and hose houses (located throughout the facility), and the fire pump house sprinkler system were examined. These items were found to be functional and had been tested within the specified time intervals of the contractor's procedure. 421 277
. . -7- c. Welding and Burning Operations The contractor's procedure, " Welding and Burning Permit Procedure" dated September 18, 1978, was reviewed and found to be adequate. Two welding operation within the Unit I containment 2..d three operations within the Unit 1 control building were observed. The procedure requirements were being followed and the fire hazards associated with these welding opera- tions were adequately saf eguarded. d. Control of Combustibles The control of combustible material at the work site is accomplished through the use of v;rious work and housekeeping procedures; however, written procedure cove. ing the type of scaf folding there is not a pe rmitted on the job site. The licensee's/ contractor's insurance carrier (s) require that only noncombustible or fire retardant treated wood scaffolding be used. Most of the scaffolding noted at the site was either metal or fire retardant treated wood, but there is a si nifi- cant amount of scaffolding, although a minor quantity of all the scaffolding at the site, that is combustible. This combustible scaf- folding consisted mainly of hand and guard rails, toe boards, wood structural supports for temporary tool rooms and buildings and a number of 4x8 foot sheets of plywood. The licensee advised that the licensee, contractor and insurance carrier (s) are all evaluating the quantity of combustible scaffolding located throughout the facility and the action required ? , remove, protect and/or minimize the existing and future use of combustible scaffolding within the plant. Pending resolution of this problem, and subsequent review by the NRC, this item is identified as Inspector Followup Item 416/79-10-10 and 417/79-10-06, " Combustible Scaf folding". . e. Fire Prevention Training All new employees at the site receive training in fire prevention, including the types and correct usage of fire extinguishers. Also, a weekly " tool box" t ype safety meeting is conducted by the various foremen and supervisors which f requently includes training or instruction in fire prevention. This program provides education and training on fire protection / prevention procedures. Within the areas inspected, except as listed above, no items of noncompliance o- deviations were identified. 421 278 }}