N.H. Admin. Code § He-P 4020.09

Current through Register No. 45, November 7, 2024

Section He-P 4020.09 - Determination of Prior Occupational Dose

(a) For each individual who is likely to receive, in a year, an occupational dose requiring monitoring pursuant to He-P 4022.02, the licensee or registrant shall determine the occupational radiation dose received during the current year.

(b) Prior to permitting an individual to participate in a planned special exposure, the licensee or registrant shall determine:

(1) The internal and external doses from all previous planned special exposures; and

(2) All doses in excess of the limits, including doses received during accidents and emergencies, received during the lifetime of the individual.

(c) In complying with the requirements of He-P 4020.09(a) or (b) , a licensee or registrant shall:

(1) Accept, as a record of the occupational dose that the individual received during the current year, a written signed statement from the individual, or from the individual's most recent employer for work involving radiation exposure, that discloses the nature and the amount of any occupational dose that the individual received during the current year;

(2) Accept, as the record of cumulative radiation dose, an up-to-date DHHS/RHS Form Y or equivalent, containing the following:

a. The full name of the individual monitored for occupational radiation dose;

b. The monitored individual's identification number and identification type;

c. The sex of the monitored individual;

d. The date of birth of the monitored individual in the format MM/DD/YYYY;

e. The monitoring period for the which the report is filed, in the format MM/DD/YYYY - MM/DD/YYYY;

f. For each monitoring period reported, the name of the licensee, registrant, or non-licensed facility that provided monitoring;

g. For each monitoring period reported, the license or registration number or numbers;

h. For each monitoring period reported, an indication as to whether the dose data listed represents:

1. A dose record, if the dose data listed is a final determination of the dose received to the best of the licensee's knowledge;

2. A dose estimate, if the listed dose data are preliminary and will be superseded by a final determination resulting in a subsequent report. An example of such an instance shall be dose data based on self-reading dosimeter results and the licensee or registrant intends to assign the record dose on the basis of TLD results that are not yet available;

3. No record, if the individual or organization has indicated that the individual was monitored, but the monitoring records could not be obtained;

4. A routine exposure, if the data represents the results of monitoring for routine exposures; and

5. A planned special exposure (PSE), if the data represents the results of monitoring of planned special exposures. If more than one PSE was received in a single year, the licensee shall sum them and report the total of all PSEs;

i. For each monitoring period, the following dose data, in units of rems:

1. The deep dose equivalent (DDE) to the whole body;

2. The lens dose equivalent (LDE) recorded for the lens of the eye;

3. The shallow dose equivalent recorded for the skin of the whole body (SDE,WB) ;

4. The shallow dose equivalent recorded for the skin of the extremity receiving the maximum dose (SDE, ME) ;

5. The committed effective dose equivalent (CEDE) recorded for the maximally exposed organ;

6. The total effective dose equivalent (TEDE) ; and

7. The total organ dose equivalent (TODE) for the maximally exposed organ;

j. The date and signature of the monitored individual, certifying that the information contained on the form is complete and correct to the best of his or her knowledge;

k. Optionally, the name of the licensee or registrant providing monitoring for exposure to radiation, or the name of the employer if the individual is not employed by the licensee or registrant and the employer chooses to maintain exposure records for its employees; and

l. Optionally, the countersignature, and date signed, of the person designated to represent the most recent licensee, registrant, or current employer in k. above;

(3) Obtain reports of the individual's dose equivalent from the most recent employer for work involving radiation exposure, or the individual's current employer, if the individual is not employed by the licensee or registrant, by telephone, telegram, facsimile, or letter; and

(4) Request a written verification of the dose data if the authenticity of the transmitted report cannot be established.

(d) The licensee or registrant shall record the exposure history, as required by He-P 4020.09(a) or (b) , on DHHS/RHS Form Y, or equivalent, of all the information required on that form.

(e) The form or record shall show each period in which the individual received occupational exposure to radiation or radioactive material and shall be signed by the individual who received the exposure.

(f) For each period for which the licensee or registrant obtains reports, the licensee or registrant shall use the dose shown in the report in preparing DHHS/RHS Form Y or equivalent.

(g) For any period in which the licensee or registrant does not obtain a report, the licensee or registrant shall place a notation on DHHS/RHS Form Y or equivalent indicating the periods of time for which data are not available.

(h) Licensees or registrants shall not be required to reevaluate the separate external dose equivalents and internal committed dose equivalents or intakes of radionuclides assessed before January 1, 1994.

(i) Occupational exposure histories obtained and recorded on DHHS/RHS Form Y or equivalent before January 1, 1994, might not have included effective dose equivalent, but may be used in the absence of specific information on the intake of radionuclides by the individual.

(j) If the licensee or registrant is unable to obtain a complete record of an individual's current and previously accumulated occupational dose, the licensee or registrant shall assume:

(1) That the allowable dose limit for the individual is reduced by 12.5 mSv (1.25 rem) for each quarter for which records were unavailable and the individual was engaged in activities that could have resulted in occupational radiation exposure; and

(2) That the individual is not available for planned special exposures.

(k) The licensee or registrant shall retain the records on DHHS/RHS Form Y or equivalent until such time as each pertinent license or registration requiring this record is terminated in accordance with this chapter.

(l) The licensee or registrant shall retain records used in preparing DHHS/RHS Form Y or equivalent for 3 years after the record is made.

N.H. Admin. Code § He-P 4020.09

#5903, eff 2-1-95; ss by #6827, eff 8-6-98; ss by #8481, eff 11-5-05

Amended byVolume XXXIV Number 24, Filed June 12, 2014, Proposed by #10604, Effective 5/23/2014, Expires 5/23/2024.