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(PFD/FID)or that can engineering controls/PPE once confirm presence of atmospheric contaminants have contaminants(detector been verified. tubes or chemical specific real-time air monitors). LEL<5% Acceptable conditions. Continue normal activity. LEL>5% Leave area immediately. Contact PM or HSM for guidance on venting and other safety measures. Conduct air monitoring for CO <35 ppm Acceptable conditions.Continue carbon monoxide normal activity. compounds during activities when intrusive activities CO> 35 ppm Leave area immediately. Contact begin. PM or HSM for guidance on venting and other safety measures. *Note:Instruments must be calibrated according to manufacturer's recommendations. 1.3.4 Daily Tailgate and Job Safety Analysis Requirements See Section 4.1 for the chemical hazards associated for the site. See Section 4.2 for chemical handling procedures to be followed when handling corrosive materials. JSAs for specific work tasks will be - developed in the field. They will be appropriate for site conditions and will be reviewed during daily tailgate safety meetings. Any JSAs developed for ongoing operations will be included in Appendix A. See Section 3.1 for general guide-lines that are common to most projects. Any change in the scope of work will require an amendment to this HASP. Any task conducted beyond the scope of work identified in this HASP must be evaluated using the JSA process. The PM and Site Manager (SM) will be responsible for identifying conditions that are beyond the scope of work and communicating to the SHSO. The SHSOs will provide guidance in the development of JSAs. See Appendix A for the JSA format CMS-710-05- FM-01708. The completed JSAs must accompany the HASP. A JSA, according to CB&I policy,will be completed daily for each task by the site supervisor or foreman responsible for the task(s). The SHSO will facilitate the process and help guide the supervisor in correctly assessing each task for the proper hazards and controls. JSAs are completed in-depth at the beginning of each task identified herein,and for new tasks that develop. However, as the work progresses,the JSAs are modified each day to address changes in work practices, site conditions, process changes, or unusual occurrences. If no modifications are necessary, the JSAs must still be completed, noting such. As work changes can happen at any time, these JSAs may be necessary to be modified more than once a day per task.The JSA must remain with the work crews until task is completed. The supervisor, foreman, and SHSO share the responsibility to review these JSAs with the work crew each day and when JSAs are modified on such days. The JSA procedure allows for signature of work crews, who must sign the bottom form of the JSA for the task that they are working on, acknowledging that they have been briefed. The JSA process is actually the same as a "safe work permit," where the supervisor or foreman grants permission to work only after the initial assessment of hazards has been made and proper work controls or injury minimization measures have been communicated and understood by affected workers. Although daily JSAs capture the changes that may occur throughout the project, the changes that are made shall be used to update the initial JSA weekly or bi-weekly. This is important, especially for long- term projects, in that it serves to maintain an up-to-date JSA for reference and/or training/orientation purposes. 1-7