ML030770729
| ML030770729 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 03/07/2003 |
| From: | Susquehanna |
| To: | Document Control Desk, Office of Nuclear Security and Incident Response |
| References | |
| 28401 EP-PS-244, Rev 6 | |
| Download: ML030770729 (13) | |
Text
Mar. 07, 2003 Page 1 of 1 MANUAL HARD COPY DISTRIBUTION DOCUMENT TRANSMITTAL 2003-10853 USER INFORMATION:
GERLAC
- SE M EMPL#:28401 CA#: 0363 Address- U CSA2 Phone#- 254- 194 TRANSMITTAL INFORMATION:
TO;: -aRLACH*ROSS 03/07/2003 LOCATION: DOCUMENT CONTROL DESK FROM: NUCLEAR RECORDS DOCUMENT CONTROL CENTER (NUCSA-2)
\__,THE FOLLOWING CHANGES HAVE OCCURRED TO THE HARDCOPY OR ELECTRONIC MANUAL ASSIGNED TO YOU:
244 - 244 - DOSE ASSESSMENT STAFFER REMOVE MANUAL TABLE OF CONTENTS DATE: 01/17/2003 ADD MANUAL TABLE OF CONTENTS DATE: 03/06/2003 CATEGORY: PROCEDURES TYPE: EP ID: EP-PS-244 REPLACE: REV:6 REPLACE: REV:6 UPDATES FOR HARD COPY MANUALS WILL BE DISTRIBUTED WITHIN 5 DAYS IN ACCORDANCE WITH DEPARTMENT PROCEDURES. PLEASE MAKE ALL CHANGES AND ACKNOWLEDGE COMPLETE IN YOUR NIMS INBOX UPON RECEIPT OF HARD COPY. FOR ELECTRONIC MANUAL USERS, ELECTRONICALLY REVIEW THE APPROPRIATE DOCUMENTS AND ACKNOWLEDGE COMPLETE IN YOUR NIMS INBOX.
Tab 6 EP-PS-244-6 PPL EMERGENCY PERSONNEL DOSE ASSESSMENT AND PROTECTIVE ACTION RECOMMENDATION (PAR) GUIDE TABLE OF CONTENTS SECTION PAGE 1.0 EMERGENCY DOSE LIMITS 2 2.0 EMERGENCY EXPOSURE/ACCIDENTAL OVEREXPOSURE 3 3.0 PROTECTIVE ACTIONS 3 4.0 EMERGENCY EXPOSURE NOTIFICATION AND HEALTH CONSEQUENCE INVESTIGATION 4 EMERGENCY EXPOSURE EXTENSIONS 5 HEALTH PHYSICS AND ALARA CONSIDERATIONS DURING AN EMERGENCY 8 NOTE: EMERGENCY EXPOSURE EXTENSION REQUEST FORM and POTASSIUM IODIDE TRACKING FORM can be found in the TAB Listing at the front of the procedure.
EP-AD-000-125, Revision 8, Page 1 of 10
Tab 6 EP-PS-244-6 PPL EMERGENCY PERSONNEL DOSE ASSESSMENT AND PROTECTIVE ACTION RECOMMENDATION (PAR) GUIDE CHECK El 1.0 Limits for EMERGENCY doses.
Q 1.1 An EMERGENCY DOSE AUTHORIZATION (see EMERGENCY EXPOSURE EXTENSIONS) may be granted in order to protect facilities, and or equipment to substantially limit the escape of radioactive effluents or control fires. The maximum planned doses are:
1.1.1 Whole body (TEDE)(1 ) dose shall not exceed 10 Rem.
1.1.2 Dose to any organ (CDE) 2 ), including the skin and extremity (SDE) 3 ), shall not exceed 100 Rem.
1.1.3 Dose to the lens of the eye shall not exceed 30 Rem (LDE)(4 ).
El 1.2 An EMERGENCY dose authorization may be granted for life-saving actions or protection of large populations. The maximum doses are:
1.2.1 Planned whole body (TEDE)(1) doses shall not exceed 25 Rem.
1.2.2 Planned dose to any organ (CDE) 2 ), including skin and extremity doses, shall not exceed 250 Rem.
1.2.3 Dose to the lens of the eye shall not exceed 75 Rem (LDE)(4) 1.3 RARE situations may occur in which a dose GREATER THAN those specified in SECTION 1.2 above for emergency dose would be unavoidable to carry out a lifesaving operation or to avoid extensive exposure of large populations. It is not possible to prejudge the risk that one should be allowed to take to save lives of others, therefore no upper limit has been established.
(1) The sum of the Effective Dose Equivalent resulting from the exposure to external sources and the committed effective Dose Equivalent incurred from all significant inhalation pathways during the early phase.
(2) The Committed Dose Equivalent to the thyroid from radioiodine.
(3) Shallow Dose Equivalent.
(4) Lens Dose Equivalent.
EP-AD-000-125, Revision 8, Page 2 of 10
Tab 6 EP-PS-244-6 PPL EMERGENCY PERSONNEL DOSE ASSESSMENT AND PROTECTIVE ACTION RECOMMENDATION (PAR) GUIDE CHECK E 2.0 For any EMERGENCY EXPOSURE OR ACCIDENTAL OVEREXPOSURE, the assessment actions in step 2 of the EMERGENCY EXPOSURE EXTENSIONS must be performed.
3.0 PROTECTIVE ACTIONS El 3.1 -Potassium Iodide 3.1.1 For emergency workers entering areas where a committed dose equivalent, (CDE)(2 ), to the thyroid from radioiodine could be 25 Rem or greater, the Consulting Radiological Physician should provide input concerning the administration and cessation of KI intake. (See Emergency Telephone Directory for telephone number.)
3.1.2 For thyroid exposures that are strongly expected to exceed 25 Rem, (CDE)(2), KI doses of 130 mg (100 mg - iodine) per day should be administered.
Unless the EMERGENCY DIRECTOR or RECOVERY MANAGER instructs personnel to do otherwise, the KI tablets should generally be taken as soon as possible after thyroid exposure exceeding 25 Rem (CDE)(2) is projected.
NOTE: Stable Iodine (KI) is most effective when administered immediately prior to exposure to radiolodine. Significant blockage of the thyroid dose can be provided by administration within one or two hours after uptake of radioiodine.
3.1.3 Onsite issuance of KI for iodine prophylaxis requires the approval of the EMERGENCY DIRECTOR. Issuance to EOF and FIELD EMERGENCY MONITORING/SAMPLING TEAM personnel requires the approval of the RECOVERY MANAGER when the EOF has relieved the TSC of emergency management activities.
The EMERGENCY DIRECTOR will approve issuance prior to that time. These approvals must be documented on the POTASSIUM IODIDE (KI) TRACKING FORM.
(2) The Committed Dose Equivalent to the thyroid from radioiodine.
EP-AD-000-125, Revision 8, Page 3 of 10
Tab 6 EP-PS-244-6 PPL EMERGENCY PERSONNEL DOSE ASSESSMENT AND PROTECTIVE ACTION RECOMMENDATION (PAR) GUIDE CHECK El 3.1.4 For an injured and/or contaminated worker sent to a hospital for treatment, the patient will be under the care of the attending physician. As such, plant procedures no longer apply and KI issuance will be at the discretion of the attending physician. The physician can rely on a senior Health Physics Technician Level II or Health Physics Management to provide the in-plant radiological data on which to base their decision.
[E 3.2 Protective measures should be implemented for EOF personnel at the direction of the DOSE ASSESSMENT SUPERVISOR.
El 3.3 Exposures to members of local offsite support groups, (ambulance workers, fire fighters) shall not exceed 500 mrem (TEDE)(1) for the performance of support duties on the site of the Susquehanna SES.
4.0 EMERGENCY EXPOSURE NOTIFICATIONS AND A HEALTH CONSEQUENCE INVESTIGATION must be conducted for any emergency exposure as outlined in step 6 of the Emergency Exposure Extensions.
(1) The sum of the Effective Dose Equivalent resulting from the exposure to external sources and the committed effective Dose Equivalent incurred from all significant inhalation pathways during the early phase.
FP-AD-000-1 25, Revision 8, Page 4 of 10
Tab 6 EP-PS-244-6 EMERGENCY EXPOSURE EXTENSIONS CHECK[E
- 1. Fill out the attached EMERGENCY EXPOSURE EXTENSION REQUEST Form.
- 2. Review the following factors:
o] Rescue personnel should be volunteers or professional rescuers.
o] Other considerations being equal (e.g., skill, potential need for person on another
-mission) personnel above the age of 45 are preferred.
El Rescue personnel should be familiar and briefed with the consequences of exposure.
El Women capable of reproduction should not take part in an effort requiring EMERGENCY exposure.
El Use of personnel with high lifetime cumulative exposure should be discouraged.
El All reasonable measures must be taken to control contamination and internal exposure.
El Exposure under these conditions shall be limited to once in a lifetime.
ol For exposures greater than 25 Rem whole body (TEDE), the persons undertaking any emergency operation in which the dose will exceed 25 Rem to the whole body (TEDE) should do so only on a voluntary basis and with full awareness of the risks involved, including the numerical levels of dose at which acute effects of radiation will be incurred and numerical estimates of the risk of delayed effects. See the following two tables for general information concerning Health Effects & Cancer Risks.
EP-AD-000-1 25, Revision 8, Page 5 of 10
Tab 6 EP-PS-244-6 EMERGENCY EXPOSURE EXTENSIONS CHECK0 Health Effects Associated with Whole Body Absorbed Doses Received Within a Few Hours(a)
Whole Body Absorbed Early Fatalities(b) Whole Body Absorbed Prodromal Effects(c)
Dose (rad) (percent) Dose (rad) (percent affected) 140 5 50 2 200 15 100 15 300 50 150 50 400 85 200 85 460 95 250 98 (a) Risks will be lower for protracted exposure periods.
(b) Supportive medical treatment may increase the dose at which these frequencies occur by approximately 50 percent.
(c) Symptoms (nausea, vomiting) which occur within a few hours after exposure to large doses of radiation and which usually precede more serious health effects.
Approximate Cancer Risk to Average Individuals from 25 Rem Effective Dose Equivalent Delivered Promptly Average Years of Life Lost if Age at Exposure Approximate Risk of Premature Death Premature Death Occurs (years) (deaths per 1,000 persons exposed) (years) 20 to 30 9.1 24 30 to 40 7.2 19 401o50 5.3 15 50 to 60 3.5 11
- 3. Review the HEALTH PHYSICS AND ALARA CONSIDERATIONS DURING EMERGENCIES which is attached.
- 4. Obtain appropriate approval signatures as outlined in the table below.
EXTENSION FROM D TO mrem fIEDmrerm (TEDE) APPROVAL ACTIONS 4000 <25000 ED and RPC/RM and DASU ALARA REVIEW AND APPLY EMERGENCY EXPOSURE CONSIDERATIONS
>25000 ED and RPC/RM and DASU ALL OF ABOVE AND BRIEFING I_ I_ ION RISKS
. EP-AD-000-1 25, Revision 8, Page 6 of 10
Tab 6 EP-PS-244-6 EMERGENCY EXPOSURE EXTENSIONS CHECK El
- 5. If the Emergency Dose Extension is for greater that 4 Rem (TEDE), have the volunteer sign the EMERGENCY EXPOSURE REQUEST Form acknowledging that they are a volunteer and are fully aware of the radiological risks of acute and delayed effects.
- 6. Upon completion of the activity requiring the Emergency Exposure perform the following:
El Collect, process, and evaluate personnel dosimetry devices when technically
-appropriate.
El Investigate the circumstances of all emergency exposures and confirm the dose received.
El Notify the NRC of emergency exposure as follows:
Immediate notification of the NRC is required for:
Notification of the NRC within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is required for:
El Assess the health consequences of all emergency exposures. Consult with a physician to determine the need for and extent of physical and biochemical examinations.
El Whole body greater than 25 Rem (TEDE) should result in an examination of the exposed person by a physician.
El If internal exposure is suspected, quantitative measurements should be made immediately. Bioassays are required based on the following:
Nasal smear or facial contamination greater than 1,000 cpm above background.
Greater than 4 DAC-HRS in a day or less, or 20 DAC-HRS in a week or less.
EP-AD-000-1 25, Revision 8, Page 7 of 10
Tab 6 EP-PS-244-6 HEALTH PHYSICS AND ALARA CONSIDERATIONS DURING EMERGENCIES CHECK El 1.0 Evaluate radiological conditions.
1.1 Obtain detailed survey data to ascertain:
1.1.1 Beta-Gamma radiation levels 1.1.2 Need for neutron measurements 1.1.3 Contamination levels and protective clothing requirements 1.1.4 Airborne radioactive materials 1.1.5 Variability of conditions over space and time 1.2 Evaluate personnel status.
1.2.1 Determine available dose under normal administrative dose objectives.
1.2.2 If essential, obtain approval from RADIATION PROTECTION COORDINATOR/EMERGENCY DIRECTOR for persons expected to exceed administrative objectives.
1.2.3 Follow criteria in PPL Emergency Personnel Dose Assessment and Protective Action Recommendation Guide when emergency exposures are deemed appropriate by EMERGENCY DIRECTOR.
1.2.4 Assess individual's history of exposure to airborne materials.
1.2.5 Assess individual's skills in relation to proposed task.
1.2.6 Assess individual's lifetime exposure history.
EP-AD-000-125, Revision 8, Page 8 of 10
Tab 6 EP-PS-244-6 HEALTH PHYSICS AND ALARA CONSIDERATIONS DURING EMERGENCIES CHECK El 1.3 Determine proper type and placement of dosimeters.
1.3.1 Evaluate need for additional whole body dosimeters.
NOTE: For emergency exposures above 4 rem, the placement of several dosimeters on an individual is recommended to determine spatial distribution of dose to the individual.
1.3.2 Evaluate need and placement of extremity dosimeters.
1.3.3 Evaluate need for additional dosimetry devices such as high range self-reading dosimeters, electronic dosimeters, and neutron dosimeters.
1.3.4 Evaluate need for time keeping.
1.4 Determine proper respirator equipment required to perform task.
NOTE: For tasks expected to last more than several hours, consider need for relief of team members.
1.5 Review the following ALARA items:
NOTE: The detail and scope of ALARA reviews are to be commensurate with the magnitude of doses expected, numbers of people involved, and urgency of required task.
1.5.1 Consider the trend of exposures vs. the importance of the task:
- a. Important and critical task with rising exposure rates will require the dispatch of teams as quickly as possible to reduce exposures.
- b. Unimportant or less critical task could be delayed until exposure rates begin to trend downward.
EP-AD-000-1 25, Revision 8, Page 9 of 10
Tab 6 EP-PS-244-6 HEALTH PHYSICS AND ALARA CONSIDERATIONS DURING EMERGENCIES CHECKI" 1.5.2 When time permits the following should be included in the ALARA review:
- a. Consider the use of remote handling devices or other special tools.
- b. Consider the use of portable shielding.
- c. Consider the need for mock-ups or other practice exercises.
- d. Assess the number of people required to assure all have essential productive roles.
- e. Consider the magnitude of doses received by team members in transit to work location.
EP-AD-000-1 25, Revision 8, Page 10 of 10
Tab 12 EP-PS-244-12 HOW TO OBTAIN CURRENT EXPOSURE FOR A SELECTED PERSON USING THE NIMS SYSTEM 1.0 ACCESSING NIMS FROM WINDOWS 95 1.1 Click on the Start button.
1.2 Move the cursor to PPL Desktop Applications, then Major Business Applications, then NIMS, then click on NIMS.
2.0 LOGGING ON TO NIMS Logon to NIMS by filling in each box. To move from box to box, use the TAB key. After all boxes are completed, hit the Enter key or click on the Connect button to bring up the NIMS screen.
Username = YOUR SYSTEM USER NAME Password = YOUR NIMS PASSWORD Database = NIMS 3.0 ACCESSING AND USING EXPOSURE RECORDS 3.1 When you get to the NIMS screen, move your cursor to the drop-down menu box (next to the stoplight).
3.2 Replace that word with RPDPERX and click on the Green Light button next to the box.
3.3 This brings up the form called Person Related Information. You can now begin your query.
3.4 Click on the Enter Query button (Flashlight icon) on your toolbar OR hit the <F7>
key on your keyboard.
3.5 In the NAME box, type the name of the person whose exposure you need to know. The format for this is lastname and a percent sign (%), which is a wild card in NIMS.
EP-AD-000-431, Revision 4, Page 1 of 2
ý I .
Tab 12 EP-PS-244-12 3.6 Click on the Execute Query button on your toolbar OR hit the <F8> key on your keyboard. This brings a name into the NAME box.
NOTE: System may display a message:
Must enter a valid worker type.
0 OK Select OK to proceed.
3.7 If the name in the box is not the person for whom you are searching, use the arrows to the far right of the form to scroll up or down the list of names.
3.8 Once you have the correct name in the box, click on the Dose Summaries button (found directly below the NAME box).
3.9 In the Dose Summaries box, look for the following:
MP (Monitoring Period) = Current Year Type = NRC Period Available On that line you will find the appropriate available DDE, CEDE, and TEDE, as needed.
3.10 To start a new query, put your cursor in the NAME box. Go back to Step 3.4 through Step 3.9 and follow the directions.
3.11 When you have finished all your queries, you can exit NIMS by dropping down the Action Menu and clicking on Exit.
EP-AD-000-431, Revision 4, Page 2 of 2