Con Edison contact information sheet, Sep 2001

NYC 9/11 Public Portal Document

,t) iSIJE CONTROL

Site workers should minimize contact of personnel and equipment with contaminated or potentially contaminated materials. Access to the site for non-project personnel should be limited by the use of barriers such as tape, fencing, etc. All project personnel shall wear Con Edison issued identification cards.

HEAT/COLD STRESS MONITORING

The SHSO or Alternate shall monitor ambient temperature and implement the following work/rest regimes accordingly:

For ambient temperatures between 15° and 70°F, standard rest breaks (i.e., fifteen minutes every four hours should be used). (Rest breaks will be taken inside the heated cab of the work and transport vehicles at the discretion of the workers)

For temperatures below 15°F, work will be done at the discretion of the SHSO or Alternate.

For temperatures above 70°F, the following regime shall be followed for workers wearing permeable coveralls:

Adjusted Temperature (a) Normal Work Ensemble (b) Impermeable Ensemble

90°F or above after 45 min. of work after 15 min. of work 87.5°F to 90°F after 60 min. of work after 30 min. of work 82.5°F to 87.5°F after 90 min. of work after 60 min. of work 77.5°F to 82.5°F after 120 min. of work after 120 min. of work 77.2°F to 77.5°F after 150 min. of work after 120 min. of work

a) Calculate the adjusted air temperature (ta adj) by using this equation: ta adj degrees F = ta °F 4 13° x sunshine). Measure air temperature (ta) with a standard mercury-in glass thermometer, with the bulb shielded from radiant heat. Estimate percent sunshine by judging what percent time the sun causes shadows. (100 percent sunshine -no cloud cover and a sharp, distinct shadow; 0 percent sunshine - cloudy, no shadows).

b) A normal work ensemble consists of cotton coveralls or other cotton clothing with long sleeves and pants.

Workers wearing semi-permeable or impermeable encapsulating protective clothing should be monitored when the temperature in the work area is above 70°F. To monitor the worker, measure:

1. Heart Rate - Count the radial pulse during a 30-second period as early as possible in the rest period. If the heart rate exceeds 110 beats per minute at the beginning of the rest period, shorten the next work cycle by one-third. If the heart rate exceeds 110 beats per minute at the next rest period, shorten the following work cycle by one-third. An alternate test is if the heart rate exceeds 140 beats per minute at the end of the work period, and 100 beats per minute at the end of the rest period, shorten the work cycle by one-third or lengthen the rest period by one-third.

2. Oral Temperature - Use a clinical thermometer (3 minutes under the tongue or similar device to measure the oral temperature at the end of the work period (before drinking). If oral temperature exceeds 99.6 F, shorten the next work cle by one-third. If oral temperature still exceeds 99.6 °F at the beginning of the next rest period, shorten the following work cycle by one-third.

Do not permit a worker to wear a semi-permeable or impermeable garment when their temperature exceeds 100.6°F. Workers shall not be required to continue working if they feel any of the symptoms of heart stress. Rest periods should be a minimum of 15 minutes. Length of rest periods should be extended as appropriate or as recommended by the SIISO or Alternate.

7 WTC HASP 13

NYC-WTC 000165916