As a HSE Manager visiting a customer site in Texas, you should inspect various aspects to ensure safety and health compliance. Here's a breakdown of key areas to consider:

1. Compliance Audits: 1, 5, 9 Conduct a thorough audit of the customer's safety management system 1, 5. This includes evaluating the design and effectiveness of their safety programs and a field inspection of safety and health conditions and practices [1]. Verify that the customer's systems are effectively implemented [1].

2. Emergency Preparedness: 1, 6, 9 Check the emergency action plan for handling releases of hazardous chemicals, including alarm systems, evacuation procedures, and support for impaired employees [2]. Ensure the plan includes procedures for small releases and that employees are trained in their emergency duties [2].

3. Training Programs: 1, 3, 8 Review the training programs for employees and contractors, ensuring they understand the hazards of the chemicals and processes they work with [3]. Confirm that training covers operating procedures, safety work practices, emergency evacuation, and routine/non-routine work authorization activities [3]. Evaluate if the necessary skills, knowledge, and routines are understood and implemented [4].

4. Contractor Safety: 3, 15 If the customer uses contractors, verify they have a screening process to ensure contractors perform job tasks safely without compromising the health and safety of employees [4]. Check contractor injury and illness rates and ensure they have the appropriate job skills and certifications [4]. Also, ensure that contract employees are trained in the work practices necessary to perform their jobs safely [5].

5. Incident Investigation: 6, 9, 16 Ensure the customer has an in-house capability to investigate incidents, including training a team in investigation techniques, documentation, and report writing [2]. The focus should be on obtaining facts, not placing blame, and the investigation process should be fair and consistent [2].

6. Management of Change: 8, 10, 16 Review the procedures for managing changes to process chemicals, technology, equipment, and facilities 10, 16. Ensure changes are properly managed by identifying and reviewing them prior to implementation [6]. Confirm that employees are informed and trained in the changes [7].

7. Mechanical Integrity: 13, 15, 19 Review the maintenance programs to ensure equipment used to process, store, or handle hazardous chemicals is designed, constructed, installed, and maintained to minimize the risk of releases [8]. This includes inspections and tests, development of maintenance procedures, and training of maintenance personnel 13, 19.

8. Hot Work Permits: 16, 19 If hot work is conducted, ensure a hot work permit is issued, documenting that fire prevention and protection requirements have been implemented [7].

9. Process Hazard Analysis (PHA): 7, 11, 13, 15 For new processes, a PHA can improve the design and construction from a reliability and quality point of view [8]. The PHA should address the hazards of the process, previous incidents, engineering and administrative controls, consequences of failure, facility siting, human factors, and a qualitative evaluation of safety and health effects [9].

10. Safe Work Practices: 8, 15 Implement safe work practices to control the entrance, presence, and exit of contract employers and employees in covered process areas [5].

11. Pre-Startup Safety Review: 13, 15 For new or modified facilities, perform a pre-startup safety review to confirm that construction and equipment are in accordance with design specifications, safety procedures are in place, and training has been completed [5].

12. General Safety: 2, 4, 12 Ensure surface encumbrances are removed or supported to safeguard employees [10]. Verify that utility companies have been contacted to establish the location of underground installations prior to excavation [10]. Take precautions to prevent employee exposure to flammable gases and ensure emergency rescue equipment is readily available where hazardous atmospheric conditions exist [11].

By covering these key areas, you can effectively assess and improve the safety and health practices at the customer site.